Swiftgram/submodules/TelegramUI/Sources/PeerInfo/PeerInfoHeaderNode.swift

import Foundation
import UIKit
import AsyncDisplayKit
import Display
import Postbox
import SyncCore
import TelegramCore
import AvatarNode
import AccountContext
import SwiftSignalKit
import TelegramPresentationData
import PhotoResources
import PeerAvatarGalleryUI
import TelegramStringFormatting
import PhoneNumberFormat
import ActivityIndicator
import TelegramUniversalVideoContent
import GalleryUI
import UniversalMediaPlayer
import RadialStatusNode
import TelegramUIPreferences

enum PeerInfoHeaderButtonKey: Hashable {
    case message
    case discussion
    case call
    case videoCall
    case mute
    case more
    case addMember
    case search
    case leave
}

enum PeerInfoHeaderButtonIcon {
    case message
    case call
    case videoCall
    case mute
    case unmute
    case more
    case addMember
    case search
    case leave
}

final class PeerInfoHeaderButtonNode: HighlightableButtonNode {
    let key: PeerInfoHeaderButtonKey
    private let action: (PeerInfoHeaderButtonNode) -> Void
    let containerNode: ASDisplayNode
    private let backgroundNode: ASImageNode
    private let textNode: ImmediateTextNode
    
    private var theme: PresentationTheme?
    private var icon: PeerInfoHeaderButtonIcon?
    
    init(key: PeerInfoHeaderButtonKey, action: @escaping (PeerInfoHeaderButtonNode) -> Void) {
        self.key = key
        self.action = action
        
        self.containerNode = ASDisplayNode()
        
        self.backgroundNode = ASImageNode()
        self.backgroundNode.displaysAsynchronously = false
        self.backgroundNode.displayWithoutProcessing = true
        
        self.textNode = ImmediateTextNode()
        self.textNode.displaysAsynchronously = false
        
        super.init()
        
        self.addSubnode(self.containerNode)
        self.containerNode.addSubnode(self.backgroundNode)
        self.containerNode.addSubnode(self.textNode)
        
        self.highligthedChanged = { [weak self] highlighted in
            if let strongSelf = self {
                if highlighted {
                    strongSelf.layer.removeAnimation(forKey: "opacity")
                    strongSelf.alpha = 0.4
                } else {
                    strongSelf.alpha = 1.0
                    strongSelf.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
                }
            }
        }
        
        self.addTarget(self, action: #selector(self.buttonPressed), forControlEvents: .touchUpInside)
    }
    
    @objc private func buttonPressed() {
        self.action(self)
    }
    
    func update(size: CGSize, text: String, icon: PeerInfoHeaderButtonIcon, isExpanded: Bool, presentationData: PresentationData, transition: ContainedViewLayoutTransition) {
        if self.theme != presentationData.theme || self.icon != icon {
            self.theme = presentationData.theme
            self.icon = icon
            self.backgroundNode.image = generateImage(CGSize(width: 40.0, height: 40.0), contextGenerator: { size, context in
                context.clear(CGRect(origin: CGPoint(), size: size))
                context.setFillColor(presentationData.theme.list.itemAccentColor.cgColor)
                context.fillEllipse(in: CGRect(origin: CGPoint(), size: size))
                context.setBlendMode(.normal)
                context.setFillColor(presentationData.theme.list.itemCheckColors.foregroundColor.cgColor)
                let imageName: String
                switch icon {
                case .message:
                    imageName = "Peer Info/ButtonMessage"
                case .call:
                    imageName = "Peer Info/ButtonCall"
                case .videoCall:
                    imageName = "Peer Info/ButtonVideo"
                case .mute:
                    imageName = "Peer Info/ButtonMute"
                case .unmute:
                    imageName = "Peer Info/ButtonUnmute"
                case .more:
                    imageName = "Peer Info/ButtonMore"
                case .addMember:
                    imageName = "Peer Info/ButtonAddMember"
                case .search:
                    imageName = "Peer Info/ButtonSearch"
                case .leave:
                    imageName = "Peer Info/ButtonLeave"
                }
                if let image = generateTintedImage(image: UIImage(bundleImageName: imageName), color: .white) {
                    let imageRect = CGRect(origin: CGPoint(x: floor((size.width - image.size.width) / 2.0), y: floor((size.height - image.size.height) / 2.0)), size: image.size)
                    context.clip(to: imageRect, mask: image.cgImage!)
                    context.fill(imageRect)
                }
            })
        }
        
        self.textNode.attributedText = NSAttributedString(string: text, font: Font.regular(12.0), textColor: presentationData.theme.list.itemAccentColor)
        let titleSize = self.textNode.updateLayout(CGSize(width: 120.0, height: .greatestFiniteMagnitude))
        
        transition.updateFrame(node: self.containerNode, frame: CGRect(origin: CGPoint(), size: size))
        transition.updateFrame(node: self.backgroundNode, frame: CGRect(origin: CGPoint(), size: size))
        transition.updateFrameAdditiveToCenter(node: self.textNode, frame: CGRect(origin: CGPoint(x: floor((size.width - titleSize.width) / 2.0), y: size.height + 6.0), size: titleSize))
        transition.updateAlpha(node: self.textNode, alpha: isExpanded ? 0.0 : 1.0)
    }
}

final class PeerInfoHeaderNavigationTransition {
    let sourceNavigationBar: NavigationBar
    let sourceTitleView: ChatTitleView
    let sourceTitleFrame: CGRect
    let sourceSubtitleFrame: CGRect
    let fraction: CGFloat
    
    init(sourceNavigationBar: NavigationBar, sourceTitleView: ChatTitleView, sourceTitleFrame: CGRect, sourceSubtitleFrame: CGRect, fraction: CGFloat) {
        self.sourceNavigationBar = sourceNavigationBar
        self.sourceTitleView = sourceTitleView
        self.sourceTitleFrame = sourceTitleFrame
        self.sourceSubtitleFrame = sourceSubtitleFrame
        self.fraction = fraction
    }
}

enum PeerInfoAvatarListItem: Equatable {
    case topImage([ImageRepresentationWithReference], [VideoRepresentationWithReference], Data?)
    case image(TelegramMediaImageReference?, [ImageRepresentationWithReference], [VideoRepresentationWithReference], Data?)
    
    var id: WrappedMediaResourceId {
        switch self {
        case let .topImage(representations, _, _):
            let representation = largestImageRepresentation(representations.map { $0.representation }) ?? representations[representations.count - 1].representation
            return WrappedMediaResourceId(representation.resource.id)
        case let .image(_, representations, _, _):
            let representation = largestImageRepresentation(representations.map { $0.representation }) ?? representations[representations.count - 1].representation
            return WrappedMediaResourceId(representation.resource.id)
        }
    }
    
    var videoRepresentations: [VideoRepresentationWithReference] {
        switch self {
            case let .topImage(_, videoRepresentations, _):
                return videoRepresentations
            case let .image(_, _, videoRepresentations, _):
                return videoRepresentations
        }
    }
    
    init(entry: AvatarGalleryEntry) {
        switch entry {
            case let .topImage(representations, videoRepresentations, _, _, immediateThumbnailData, _):
                self = .topImage(representations, videoRepresentations, immediateThumbnailData)
            case let .image(_, reference, representations, videoRepresentations, _, _, _, _, immediateThumbnailData, _):
                self = .image(reference, representations, videoRepresentations, immediateThumbnailData)
        }
    }
}

final class PeerInfoAvatarListItemNode: ASDisplayNode {
    private let context: AccountContext
    private let peer: Peer
    let imageNode: TransformImageNode
    private var videoNode: UniversalVideoNode?
    private var videoContent: NativeVideoContent?
    private var videoStartTimestamp: Double?
    private let playbackStartDisposable = MetaDisposable()
    private let statusDisposable = MetaDisposable()
    private let preloadDisposable = MetaDisposable()
    private let statusNode: RadialStatusNode
    
    private var playerStatus: MediaPlayerStatus?
    private var isLoading = ValuePromise<Bool>(false)
    private var loadingProgress = ValuePromise<Float?>(nil)
    private var loadingProgressDisposable = MetaDisposable()
    private var hasProgress = false
    
    let isReady = Promise<Bool>()
    private var didSetReady: Bool = false
    
    var item: PeerInfoAvatarListItem?
        
    private var statusPromise = Promise<(MediaPlayerStatus?, Double?)?>()
    var mediaStatus: Signal<(MediaPlayerStatus?, Double?)?, NoError> {
        get {
            return self.statusPromise.get()
        }
    }
    
    var delayCentralityLose = false
    var isCentral: Bool? = nil {
        didSet {
            guard self.isCentral != oldValue, let isCentral = self.isCentral else {
                return
            }
            if isCentral {
                self.setupVideoPlayback()
                self.preloadDisposable.set(nil)
            } else {
                if let videoNode = self.videoNode {
                    self.playbackStartDisposable.set(nil)
                    self.statusPromise.set(.single(nil))
                    self.videoNode = nil
                    if self.delayCentralityLose {
                        Queue.mainQueue().after(0.5) {
                            videoNode.removeFromSupernode()
                        }
                    } else {
                        videoNode.removeFromSupernode()
                    }
                }
                if let videoContent = self.videoContent {
                    let duration: Double = (self.videoStartTimestamp ?? 0.0) + 4.0
                    self.preloadDisposable.set(preloadVideoResource(postbox: self.context.account.postbox, resourceReference: videoContent.fileReference.resourceReference(videoContent.fileReference.media.resource), duration: duration).start())
                }
            }
        }
    }
    
    init(context: AccountContext, peer: Peer) {
        self.context = context
        self.peer = peer
        self.imageNode = TransformImageNode()
        
        self.statusNode = RadialStatusNode(backgroundNodeColor: UIColor(rgb: 0x000000, alpha: 0.3))
        self.statusNode.isUserInteractionEnabled = false
   
        super.init()
        
        self.clipsToBounds = true
                
        self.imageNode.contentAnimations = [.firstUpdate, .subsequentUpdates]
        self.addSubnode(self.imageNode)
        self.addSubnode(self.statusNode)
                
        self.loadingProgressDisposable.set((combineLatest(self.isLoading.get()
        |> mapToSignal { value -> Signal<Bool, NoError> in
            if value {
                return .single(value) |> delay(0.5, queue: Queue.mainQueue())
            } else {
                return .single(value)
            }
        } |> distinctUntilChanged, self.loadingProgress.get() |> distinctUntilChanged)).start(next: { [weak self] isLoading, progress in
            guard let strongSelf = self else {
                return
            }
            if isLoading, let progress = progress {
                strongSelf.hasProgress = true
                strongSelf.statusNode.transitionToState(.progress(color: .white, lineWidth: nil, value: CGFloat(max(0.027, progress)), cancelEnabled: false), completion: {})
            } else if strongSelf.hasProgress {
                strongSelf.hasProgress = false
                strongSelf.statusNode.transitionToState(.progress(color: .white, lineWidth: nil, value: 1.0, cancelEnabled: false), completion: { [weak self] in
                     guard let strongSelf = self else {
                        return
                    }
                    if !strongSelf.hasProgress {
                        Queue.mainQueue().after(0.3) {
                            strongSelf.statusNode.transitionToState(.none, completion: {})
                        }
                    }
                })
            }
        }))
    }
    
    deinit {
        self.statusDisposable.dispose()
        self.playbackStartDisposable.dispose()
        self.preloadDisposable.dispose()
    }
    
    private func updateStatus() {
        guard let videoContent = self.videoContent else {
            return
        }
             
        var bufferingProgress: Float?
        if isMediaStreamable(resource: videoContent.fileReference.media.resource) {
            if let playerStatus = self.playerStatus {
                if case let .buffering(_, _, progress) = playerStatus.status {
                    bufferingProgress = progress
                } else if case .playing = playerStatus.status {
                    bufferingProgress = nil
                }
            } else {
                bufferingProgress = nil
            }
        }
        self.loadingProgress.set(bufferingProgress)
        self.isLoading.set(bufferingProgress != nil)
    }
    
    func updateTransitionFraction(_ fraction: CGFloat, transition: ContainedViewLayoutTransition) {
        if let videoNode = self.videoNode {
            if case .immediate = transition, fraction == 1.0 {
                return
            }
            transition.updateAlpha(node: videoNode, alpha: 1.0 - fraction)
        }
    }
    
    private func setupVideoPlayback() {
        guard let videoContent = self.videoContent, let isCentral = self.isCentral, isCentral, self.videoNode == nil else {
            return
        }
        
        let mediaManager = self.context.sharedContext.mediaManager
        let videoNode = UniversalVideoNode(postbox: self.context.account.postbox, audioSession: mediaManager.audioSession, manager: mediaManager.universalVideoManager, decoration: GalleryVideoDecoration(), content: videoContent, priority: .secondaryOverlay)
        videoNode.isUserInteractionEnabled = false
        videoNode.canAttachContent = true
        videoNode.isHidden = true
        
        if let _ = self.videoStartTimestamp {
            self.playbackStartDisposable.set((videoNode.status
            |> map { status -> Bool in
                if let status = status, case .playing = status.status {
                    return true
                } else {
                    return false
                }
            }
            |> filter { playing in
                return playing
            }
            |> take(1)
            |> deliverOnMainQueue).start(completed: { [weak self] in
                if let strongSelf = self {
                    Queue.mainQueue().after(0.1) {
                        strongSelf.videoNode?.isHidden = false
                    }
                }
            }))
        } else {
            self.playbackStartDisposable.set(nil)
            videoNode.isHidden = false
        }
        videoNode.play()
        
        self.videoNode = videoNode
        let videoStartTimestamp = self.videoStartTimestamp
        self.statusPromise.set(videoNode.status |> map { ($0, videoStartTimestamp) })
        
        self.statusDisposable.set((self.mediaStatus
        |> deliverOnMainQueue).start(next: { [weak self] mediaStatus in
            if let strongSelf = self {
                if let mediaStatusAndStartTimestamp = mediaStatus {
                    strongSelf.playerStatus = mediaStatusAndStartTimestamp.0
                }
                strongSelf.updateStatus()
            }
        }))
        
        self.insertSubnode(videoNode, belowSubnode: self.statusNode)
        
        self.isReady.set(videoNode.ready |> map { return true })
    }
    
    func setup(item: PeerInfoAvatarListItem, synchronous: Bool) {
        self.item = item
        
        let representations: [ImageRepresentationWithReference]
        let videoRepresentations: [VideoRepresentationWithReference]
        let immediateThumbnailData: Data?
        var id: Int64
        switch item {
        case let .topImage(topRepresentations, videoRepresentationsValue, immediateThumbnail):
            representations = topRepresentations
            videoRepresentations = videoRepresentationsValue
            immediateThumbnailData = immediateThumbnail
            id = Int64(self.peer.id.id)
            if let resource = videoRepresentations.first?.representation.resource as? CloudPhotoSizeMediaResource {
                id = id &+ resource.photoId
            }
        case let .image(reference, imageRepresentations, videoRepresentationsValue, immediateThumbnail):
            representations = imageRepresentations
            videoRepresentations = videoRepresentationsValue
            immediateThumbnailData = immediateThumbnail
            if case let .cloud(imageId, _, _) = reference {
                id = imageId
            } else {
                id = Int64(self.peer.id.id)
            }
        }
        self.imageNode.setSignal(chatAvatarGalleryPhoto(account: self.context.account, representations: representations, immediateThumbnailData: immediateThumbnailData, autoFetchFullSize: true, attemptSynchronously: synchronous), attemptSynchronously: synchronous, dispatchOnDisplayLink: false)
        
        if let video = videoRepresentations.last, let peerReference = PeerReference(self.peer) {
            let videoFileReference = FileMediaReference.avatarList(peer: peerReference, media: TelegramMediaFile(fileId: MediaId(namespace: Namespaces.Media.LocalFile, id: 0), partialReference: nil, resource: video.representation.resource, previewRepresentations: representations.map { $0.representation }, videoThumbnails: [], immediateThumbnailData: immediateThumbnailData, mimeType: "video/mp4", size: nil, attributes: [.Animated, .Video(duration: 0, size: video.representation.dimensions, flags: [])]))
            let videoContent = NativeVideoContent(id: .profileVideo(id, nil), fileReference: videoFileReference, streamVideo: isMediaStreamable(resource: video.representation.resource) ? .conservative : .none, loopVideo: true, enableSound: false, fetchAutomatically: true, onlyFullSizeThumbnail: false, useLargeThumbnail: true, autoFetchFullSizeThumbnail: true, startTimestamp: video.representation.startTimestamp, continuePlayingWithoutSoundOnLostAudioSession: false, placeholderColor: .clear)
            
            if videoContent.id != self.videoContent?.id {                
                self.videoContent = videoContent
                self.videoStartTimestamp = video.representation.startTimestamp
                self.setupVideoPlayback()
            }
        } else {
            if let videoNode = self.videoNode {
                self.videoContent = nil
                self.videoStartTimestamp = nil
                self.videoNode = nil
                          
                videoNode.removeFromSupernode()
            }
            
            self.statusPromise.set(.single(nil))
            
            self.statusDisposable.set(nil)
            
            self.imageNode.imageUpdated = { [weak self] _ in
                guard let strongSelf = self else {
                    return
                }
                if !strongSelf.didSetReady {
                    strongSelf.didSetReady = true
                    strongSelf.isReady.set(.single(true))
                }
            }
        }
    }
    
    func update(size: CGSize, transition: ContainedViewLayoutTransition) {
        let imageSize = CGSize(width: min(size.width, size.height), height: min(size.width, size.height))
        let makeLayout = self.imageNode.asyncLayout()
        let applyLayout = makeLayout(TransformImageArguments(corners: ImageCorners(), imageSize: imageSize, boundingSize: imageSize, intrinsicInsets: UIEdgeInsets()))
        let _ = applyLayout()
        let imageFrame = CGRect(origin: CGPoint(x: floor((size.width - imageSize.width) / 2.0), y: floor((size.height - imageSize.height) / 2.0)), size: imageSize)
        transition.updateFrame(node: self.imageNode, frame: imageFrame)
        
        transition.updateFrame(node: self.statusNode, frame: CGRect(origin: CGPoint(x: floor((size.width - 50.0) / 2.0), y: floor((size.height - 50.0) / 2.0)), size: CGSize(width: 50.0, height: 50.0)))
        
        if let videoNode = self.videoNode {
            videoNode.updateLayout(size: imageSize, transition: .immediate)
            videoNode.frame = imageFrame
        }
    }
}

private class PeerInfoAvatarListLoadingStripNode: ASImageNode {
    private var currentInHierarchy = false
    
    let imageNode = ASImageNode()
    
    override init() {
        super.init()
        
        self.addSubnode(self.imageNode)
    }
    
    override public var isHidden: Bool {
        didSet {
            self.updateAnimation()
        }
    }
    private var isAnimating = false {
        didSet {
            if self.isAnimating != oldValue {
                if self.isAnimating {
                    let basicAnimation = CABasicAnimation(keyPath: "opacity")
                    basicAnimation.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
                    basicAnimation.duration = 0.45
                    basicAnimation.fromValue = 0.1
                    basicAnimation.toValue = 0.75
                    basicAnimation.repeatCount = Float.infinity
                    basicAnimation.autoreverses = true
                    
                    self.imageNode.layer.add(basicAnimation, forKey: "loading")
                } else {
                    self.imageNode.layer.removeAnimation(forKey: "loading")
                }
            }
        }
    }
    
    private func updateAnimation() {
        self.isAnimating = !self.isHidden && self.currentInHierarchy
    }
    
    override public func willEnterHierarchy() {
        super.willEnterHierarchy()
        
        self.currentInHierarchy = true
        self.updateAnimation()
    }
    
    override public func didExitHierarchy() {
        super.didExitHierarchy()
        
        self.currentInHierarchy = false
        self.updateAnimation()
    }
    
    override func layout() {
        super.layout()
        
        self.imageNode.frame = self.bounds
    }
}

final class PeerInfoAvatarListContainerNode: ASDisplayNode {
    private let context: AccountContext
    var peer: Peer?
    
    let controlsContainerNode: ASDisplayNode
    let controlsClippingNode: ASDisplayNode
    let controlsClippingOffsetNode: ASDisplayNode
    let shadowNode: ASImageNode
    
    let contentNode: ASDisplayNode
    let leftHighlightNode: ASImageNode
    let rightHighlightNode: ASImageNode
    var highlightedSide: Bool?
    let stripContainerNode: ASDisplayNode
    let highlightContainerNode: ASDisplayNode
    private(set) var galleryEntries: [AvatarGalleryEntry] = []
    private var items: [PeerInfoAvatarListItem] = []
    private var itemNodes: [WrappedMediaResourceId: PeerInfoAvatarListItemNode] = [:]
    private var stripNodes: [ASImageNode] = []
    private var activeStripNode: ASImageNode
    private var loadingStripNode: PeerInfoAvatarListLoadingStripNode
    private let activeStripImage: UIImage
    private var appliedStripNodeCurrentIndex: Int?
    var currentIndex: Int = 0
    private var transitionFraction: CGFloat = 0.0
    
    private var validLayout: CGSize?
    var isCollapsing = false
    private var isExpanded = false
    
    private let disposable = MetaDisposable()
    private let positionDisposable = MetaDisposable()
    private var initializedList = false
    private var ignoreNextProfilePhotoUpdate = false
    var itemsUpdated: (([PeerInfoAvatarListItem]) -> Void)?
    var currentIndexUpdated: (() -> Void)?
    
    let isReady = Promise<Bool>()
    private var didSetReady = false
    
    var currentItemNode: PeerInfoAvatarListItemNode? {
        if self.currentIndex >= 0 && self.currentIndex < self.items.count {
            return self.itemNodes[self.items[self.currentIndex].id]
        } else {
            return nil
        }
    }
    
    var currentEntry: AvatarGalleryEntry? {
        if self.currentIndex >= 0 && self.currentIndex < self.galleryEntries.count {
            return self.galleryEntries[self.currentIndex]
        } else {
            return nil
        }
    }
    
    private var playerUpdateTimer: SwiftSignalKit.Timer?
    private var playerStatus: (MediaPlayerStatus?, Double?)? {
        didSet {
            if self.playerStatus?.0 != oldValue?.0 || self.playerStatus?.1 != oldValue?.1 {
                if let (playerStatus, _) = self.playerStatus, let status = playerStatus, case .playing = status.status {
                    self.ensureHasTimer()
                } else {
                    self.stopTimer()
                }
                self.updateStatus()
            }
        }
    }
    
    private func ensureHasTimer() {
        if self.playerUpdateTimer == nil {
            let timer = SwiftSignalKit.Timer(timeout: 0.016, repeat: true, completion: { [weak self] in
                self?.updateStatus()
                }, queue: Queue.mainQueue())
            self.playerUpdateTimer = timer
            timer.start()
        }
    }
    
    private var playbackProgress: CGFloat?
    private var loading: Bool = false
    private func updateStatus() {
        var position: CGFloat = 1.0
        var loading = false
        if let (status, videoStartTimestamp) = self.playerStatus, let playerStatus = status {
            var playerPosition: Double
            if case .buffering = playerStatus.status {
                loading = true
            }
            if !playerStatus.generationTimestamp.isZero, case .playing = playerStatus.status {
                playerPosition = playerStatus.timestamp + (CACurrentMediaTime() - playerStatus.generationTimestamp)
            } else {
                playerPosition = playerStatus.timestamp
            }
            
            if let videoStartTimestamp = videoStartTimestamp, false {
                playerPosition -= videoStartTimestamp
                if playerPosition < 0.0 {
                    playerPosition = playerStatus.duration + playerPosition
                }
            }
            
            if playerStatus.duration.isZero {
                position = 0.0
            } else {
                position = CGFloat(playerPosition / playerStatus.duration)
            }
        } else {
            self.playbackProgress = nil
        }
        
        if let size = self.validLayout {
            self.playbackProgress = position
            self.loading = loading
            self.updateStrips(size: size, itemsAdded: false, stripTransition: .animated(duration: 0.3, curve: .spring))
        }
    }
    
    private func stopTimer() {
        self.playerUpdateTimer?.invalidate()
        self.playerUpdateTimer = nil
    }
    
    init(context: AccountContext) {
        self.context = context
        
        self.contentNode = ASDisplayNode()
        
        self.leftHighlightNode = ASImageNode()
        self.leftHighlightNode.displaysAsynchronously = false
        self.leftHighlightNode.displayWithoutProcessing = true
        self.leftHighlightNode.contentMode = .scaleToFill
        self.leftHighlightNode.image = generateImage(CGSize(width: 88.0, height: 1.0), contextGenerator: { size, context in
            context.clear(CGRect(origin: CGPoint(), size: size))
            
            let topColor = UIColor(rgb: 0x000000, alpha: 0.1)
            let bottomColor = UIColor(rgb: 0x000000, alpha: 0.0)
            
            var locations: [CGFloat] = [0.0, 1.0]
            let colors: [CGColor] = [topColor.cgColor, bottomColor.cgColor]
            
            let colorSpace = CGColorSpaceCreateDeviceRGB()
            let gradient = CGGradient(colorsSpace: colorSpace, colors: colors as CFArray, locations: &locations)!
            
            context.drawLinearGradient(gradient, start: CGPoint(x: 0.0, y: 0.0), end: CGPoint(x: size.width, y: 0.0), options: [.drawsBeforeStartLocation, .drawsAfterEndLocation])
        })
        self.leftHighlightNode.alpha = 0.0
        
        self.rightHighlightNode = ASImageNode()
        self.rightHighlightNode.displaysAsynchronously = false
        self.rightHighlightNode.displayWithoutProcessing = true
        self.rightHighlightNode.contentMode = .scaleToFill
        self.rightHighlightNode.image = generateImage(CGSize(width: 88.0, height: 1.0), contextGenerator: { size, context in
            context.clear(CGRect(origin: CGPoint(), size: size))
            
            let topColor = UIColor(rgb: 0x000000, alpha: 0.1)
            let bottomColor = UIColor(rgb: 0x000000, alpha: 0.0)
            
            var locations: [CGFloat] = [0.0, 1.0]
            let colors: [CGColor] = [topColor.cgColor, bottomColor.cgColor]
            
            let colorSpace = CGColorSpaceCreateDeviceRGB()
            let gradient = CGGradient(colorsSpace: colorSpace, colors: colors as CFArray, locations: &locations)!
            
            context.drawLinearGradient(gradient, start: CGPoint(x: size.width, y: 0.0), end: CGPoint(x: 0.0, y: 0.0), options: [.drawsBeforeStartLocation, .drawsAfterEndLocation])
        })
        self.rightHighlightNode.alpha = 0.0
        
        self.stripContainerNode = ASDisplayNode()
        self.contentNode.addSubnode(self.stripContainerNode)
        self.activeStripImage = generateSmallHorizontalStretchableFilledCircleImage(diameter: 2.0, color: .white)!
        
        self.activeStripNode = ASImageNode()
        self.activeStripNode.image = self.activeStripImage
        
        self.loadingStripNode = PeerInfoAvatarListLoadingStripNode()
        self.loadingStripNode.imageNode.image = self.activeStripImage
        
        self.highlightContainerNode = ASDisplayNode()
        self.highlightContainerNode.addSubnode(self.leftHighlightNode)
        self.highlightContainerNode.addSubnode(self.rightHighlightNode)
        
        self.controlsContainerNode = ASDisplayNode()
        self.controlsContainerNode.isUserInteractionEnabled = false
        
        self.controlsClippingOffsetNode = ASDisplayNode()
        
        self.controlsClippingNode = ASDisplayNode()
        self.controlsClippingNode.isUserInteractionEnabled = false
        self.controlsClippingNode.clipsToBounds = true
        
        self.shadowNode = ASImageNode()
        self.shadowNode.displaysAsynchronously = false
        self.shadowNode.displayWithoutProcessing = true
        self.shadowNode.contentMode = .scaleToFill
        
        do {
            let size = CGSize(width: 88.0, height: 88.0)
            UIGraphicsBeginImageContextWithOptions(size, false, 0.0)
            if let context = UIGraphicsGetCurrentContext() {
                context.clip(to: CGRect(origin: CGPoint(), size: size))
                
                let topColor = UIColor(rgb: 0x000000, alpha: 0.4)
                let bottomColor = UIColor(rgb: 0x000000, alpha: 0.0)
                
                var locations: [CGFloat] = [0.0, 1.0]
                let colors: [CGColor] = [topColor.cgColor, bottomColor.cgColor]
                
                let colorSpace = CGColorSpaceCreateDeviceRGB()
                let gradient = CGGradient(colorsSpace: colorSpace, colors: colors as CFArray, locations: &locations)!
                
                context.drawLinearGradient(gradient, start: CGPoint(x: 0.0, y: 0.0), end: CGPoint(x: size.width, y: 0.0), options: [.drawsBeforeStartLocation, .drawsAfterEndLocation])
                
                let image = UIGraphicsGetImageFromCurrentImageContext()
                UIGraphicsEndImageContext()
                if let image = image {
                    self.shadowNode.image = generateImage(image.size, contextGenerator: { size, context in
                        context.clear(CGRect(origin: CGPoint(), size: size))
                        context.translateBy(x: size.width / 2.0, y: size.height / 2.0)
                        context.rotate(by: -CGFloat.pi / 2.0)
                        context.translateBy(x: -size.width / 2.0, y: -size.height / 2.0)
                        context.draw(image.cgImage!, in: CGRect(origin: CGPoint(), size: size))
                    })
                }
            }
        }
        
        super.init()
        
        self.backgroundColor = .black
        
        self.addSubnode(self.contentNode)
        
        self.controlsContainerNode.addSubnode(self.highlightContainerNode)
        self.controlsContainerNode.addSubnode(self.shadowNode)
        self.controlsContainerNode.addSubnode(self.stripContainerNode)
        self.controlsClippingNode.addSubnode(self.controlsContainerNode)
        self.controlsClippingOffsetNode.addSubnode(self.controlsClippingNode)
        
        self.view.disablesInteractiveTransitionGestureRecognizerNow = { [weak self] in
            guard let strongSelf = self else {
                return false
            }
            return strongSelf.currentIndex != 0
        }
        self.view.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.panGesture(_:))))
        
        let recognizer = TapLongTapOrDoubleTapGestureRecognizer(target: self, action: #selector(self.tapLongTapOrDoubleTapGesture(_:)))
        recognizer.tapActionAtPoint = { _ in
            return .keepWithSingleTap
        }
        recognizer.highlight = { [weak self] point in
            guard let strongSelf = self, let size = strongSelf.validLayout else {
                return
            }
            var highlightedSide: Bool?
            if let point = point {
                if point.x < size.width * 1.0 / 5.0 {
                    if strongSelf.items.count > 1 {
                        highlightedSide = false
                    }
                } else {
                    if strongSelf.items.count > 1 {
                        highlightedSide = true
                    }
                }
            }
            if strongSelf.highlightedSide != highlightedSide {
                strongSelf.highlightedSide = highlightedSide
                let leftAlpha: CGFloat
                let rightAlpha: CGFloat
                if let highlightedSide = highlightedSide {
                    leftAlpha = highlightedSide ? 0.0 : 1.0
                    rightAlpha = highlightedSide ? 1.0 : 0.0
                } else {
                    leftAlpha = 0.0
                    rightAlpha = 0.0
                }
                if strongSelf.leftHighlightNode.alpha != leftAlpha {
                    strongSelf.leftHighlightNode.alpha = leftAlpha
                    if leftAlpha.isZero {
                        strongSelf.leftHighlightNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.16, timingFunction: kCAMediaTimingFunctionSpring)
                    } else {
                        strongSelf.leftHighlightNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.08)
                    }
                }
                if strongSelf.rightHighlightNode.alpha != rightAlpha {
                    strongSelf.rightHighlightNode.alpha = rightAlpha
                    if rightAlpha.isZero {
                        strongSelf.rightHighlightNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.16, timingFunction: kCAMediaTimingFunctionSpring)
                    } else {
                        strongSelf.rightHighlightNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.08)
                    }
                }
            }
        }
        self.view.addGestureRecognizer(recognizer)
    }
    
    deinit {
        self.disposable.dispose()
        self.positionDisposable.dispose()
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        return super.hitTest(point, with: event)
    }
    
    func selectFirstItem() {
        let previousIndex = self.currentIndex
        self.currentIndex = 0
        if self.currentIndex != previousIndex {
            self.currentIndexUpdated?()
        }
        if let size = self.validLayout {
            self.updateItems(size: size, transition: .immediate, stripTransition: .immediate)
        }
    }
    
    func updateEntryIsHidden(entry: AvatarGalleryEntry?) {
        if let entry = entry, let index = self.galleryEntries.firstIndex(of: entry) {
            self.currentItemNode?.isHidden = index == self.currentIndex
        } else {
            self.currentItemNode?.isHidden = false
        }
    }
    
    @objc private func tapLongTapOrDoubleTapGesture(_ recognizer: TapLongTapOrDoubleTapGestureRecognizer) {
        switch recognizer.state {
        case .ended:
            if let (gesture, location) = recognizer.lastRecognizedGestureAndLocation {
                if let size = self.validLayout, case .tap = gesture {
                    if location.x < size.width * 1.0 / 5.0 {
                        if self.currentIndex != 0 {
                            let previousIndex = self.currentIndex
                            self.currentIndex -= 1
                            if self.currentIndex != previousIndex {
                                self.currentIndexUpdated?()
                            }
                            self.updateItems(size: size, transition: .immediate, stripTransition: .animated(duration: 0.3, curve: .spring), synchronous: true)
                        } else if self.items.count > 1 {
                            let previousIndex = self.currentIndex
                            self.currentIndex = self.items.count - 1
                            if self.currentIndex != previousIndex {
                                self.currentIndexUpdated?()
                            }
                            self.updateItems(size: size, transition: .immediate, stripTransition: .animated(duration: 0.3, curve: .spring), synchronous: true)
                        }
                    } else {
                        if self.currentIndex < self.items.count - 1 {
                            let previousIndex = self.currentIndex
                            self.currentIndex += 1
                            if self.currentIndex != previousIndex {
                                self.currentIndexUpdated?()
                            }
                            self.updateItems(size: size, transition: .immediate, stripTransition: .animated(duration: 0.3, curve: .spring), synchronous: true)
                        } else if self.items.count > 1 {
                            let previousIndex = self.currentIndex
                            self.currentIndex = 0
                            if self.currentIndex != previousIndex {
                                self.currentIndexUpdated?()
                            }
                            self.updateItems(size: size, transition: .immediate, stripTransition: .animated(duration: 0.3, curve: .spring), synchronous: true)
                        }
                    }
                }
            }
        default:
            break
        }
    }
    
    private var pageChangedByPan = false
    @objc private func panGesture(_ recognizer: UIPanGestureRecognizer) {
        switch recognizer.state {
        case .changed:
            let translation = recognizer.translation(in: self.view)
            var transitionFraction = translation.x / self.bounds.width
            if self.currentIndex <= 0 {
                transitionFraction = min(0.0, transitionFraction)
            }
            if self.currentIndex >= self.items.count - 1 {
                transitionFraction = max(0.0, transitionFraction)
            }
            self.transitionFraction = transitionFraction
            if let size = self.validLayout {
                self.updateItems(size: size, transition: .animated(duration: 0.3, curve: .spring), stripTransition: .animated(duration: 0.3, curve: .spring))
            }
        case .cancelled, .ended:
            let translation = recognizer.translation(in: self.view)
            let velocity = recognizer.velocity(in: self.view)
            var directionIsToRight: Bool?
            if abs(velocity.x) > 10.0 {
                directionIsToRight = velocity.x < 0.0
            } else if abs(transitionFraction) > 0.5 {
                directionIsToRight = transitionFraction < 0.0
            }
            var updatedIndex = self.currentIndex
            if let directionIsToRight = directionIsToRight {
                if directionIsToRight {
                    updatedIndex = min(updatedIndex + 1, self.items.count - 1)
                } else {
                    updatedIndex = max(updatedIndex - 1, 0)
                }
            }
            let previousIndex = self.currentIndex
            self.currentIndex = updatedIndex
            if self.currentIndex != previousIndex {
                self.pageChangedByPan = true
                self.currentIndexUpdated?()
            }
            self.transitionFraction = 0.0
            if let size = self.validLayout {
                self.updateItems(size: size, transition: .animated(duration: 0.3, curve: .spring), stripTransition: .animated(duration: 0.3, curve: .spring))
                self.pageChangedByPan = false
            }
        default:
            break
        }
    }
    
    func setMainItem(_ item: PeerInfoAvatarListItem) {
        guard case let .image(image) = item else {
            return
        }
        var items: [PeerInfoAvatarListItem] = []
        var entries: [AvatarGalleryEntry] = []
        for entry in self.galleryEntries {
            switch entry {
                case let .topImage(representations, videoRepresentations, _, _, immediateThumbnailData, _):
                    entries.append(entry)
                    items.append(.topImage(representations, videoRepresentations, immediateThumbnailData))
                case let .image(_, reference, representations, videoRepresentations, _, _, _, _, immediateThumbnailData, _):
                    if image.0 == reference {
                        entries.insert(entry, at: 0)
                        items.insert(.image(reference, representations, videoRepresentations, immediateThumbnailData), at: 0)
                    } else {
                        entries.append(entry)
                        items.append(.image(reference, representations, videoRepresentations, immediateThumbnailData))
                    }
            }
        }
        self.galleryEntries = normalizeEntries(entries)
        self.items = items
        self.itemsUpdated?(items)
        let previousIndex = self.currentIndex
        self.currentIndex = 0
        if self.currentIndex != previousIndex {
            self.currentIndexUpdated?()
        }
        self.ignoreNextProfilePhotoUpdate = true
        if let size = self.validLayout {
            self.updateItems(size: size, update: true, transition: .immediate, stripTransition: .immediate, synchronous: true)
        }
    }
    
    func deleteItem(_ item: PeerInfoAvatarListItem) -> Bool {
        guard case let .image(image) = item else {
            return false
        }
                
        var items: [PeerInfoAvatarListItem] = []
        var entries: [AvatarGalleryEntry] = []
        let previousIndex = self.currentIndex
        
        var index = 0
        var deletedIndex: Int?
        for entry in self.galleryEntries {
            switch entry {
                case let .topImage(representations, videoRepresentations, _, _, immediateThumbnailData, _):
                    entries.append(entry)
                    items.append(.topImage(representations, videoRepresentations, immediateThumbnailData))
                case let .image(_, reference, representations, videoRepresentations, _, _, _, _, immediateThumbnailData, _):
                    if image.0 != reference {
                        entries.append(entry)
                        items.append(.image(reference, representations, videoRepresentations, immediateThumbnailData))
                    } else {
                        deletedIndex = index
                    }
            }
            index += 1
        }
        
        
        if let peer = self.peer, peer is TelegramGroup || peer is TelegramChannel, deletedIndex == 0 {
            self.galleryEntries = []
            self.items = []
            self.itemsUpdated?([])
            self.currentIndex = 0
            if let size = self.validLayout {
                self.updateItems(size: size, update: true, transition: .immediate, stripTransition: .immediate, synchronous: true)
            }
            return true
        }
        
        self.galleryEntries = normalizeEntries(entries)
        self.items = items
        self.itemsUpdated?(items)
        self.currentIndex = max(0, previousIndex - 1)
        if self.currentIndex != previousIndex {
            self.currentIndexUpdated?()
        }
        self.ignoreNextProfilePhotoUpdate = true
        if let size = self.validLayout {
            self.updateItems(size: size, update: true, transition: .immediate, stripTransition: .immediate, synchronous: true)
        }
        
        return items.count == 0
    }
    
    func update(size: CGSize, peer: Peer?, isExpanded: Bool, transition: ContainedViewLayoutTransition) {
        self.validLayout = size
        let previousExpanded = self.isExpanded
        self.isExpanded = isExpanded
        if !isExpanded && previousExpanded {
            self.isCollapsing = true
        }
        self.leftHighlightNode.frame = CGRect(origin: CGPoint(), size: CGSize(width: floor(size.width * 1.0 / 5.0), height: size.height))
        self.rightHighlightNode.frame = CGRect(origin: CGPoint(x: size.width - floor(size.width * 1.0 / 5.0), y: 0.0), size: CGSize(width: floor(size.width * 1.0 / 5.0), height: size.height))
        
        if let peer = peer, !self.initializedList {
            self.initializedList = true
            self.disposable.set((peerInfoProfilePhotosWithCache(context: self.context, peerId: peer.id)
            |> deliverOnMainQueue).start(next: { [weak self] (complete, entries) in
                guard let strongSelf = self else {
                    return
                }
                
                if strongSelf.galleryEntries.count > 1, entries.count == 1 && !complete {
                    return
                }
                
                var entries = entries
                var synchronous = false
                if !strongSelf.galleryEntries.isEmpty, let updated = entries.first, case let .image(image) = updated, !image.3.isEmpty, let previous = strongSelf.galleryEntries.first, case let .topImage(topImage) = previous {
                    let firstEntry = AvatarGalleryEntry.image(image.0, image.1, topImage.0, image.3, image.4, image.5, image.6, image.7, image.8, image.9)
                    entries.remove(at: 0)
                    entries.insert(firstEntry, at: 0)
                    synchronous = true
                }
                
                if strongSelf.ignoreNextProfilePhotoUpdate {
                    if entries.count == 1, let first = entries.first, case .topImage = first {
                        return
                    } else {
                        strongSelf.ignoreNextProfilePhotoUpdate = false
                        synchronous = true
                    }
                }
                
                var items: [PeerInfoAvatarListItem] = []
                for entry in entries {
                    items.append(PeerInfoAvatarListItem(entry: entry))
                }
                strongSelf.galleryEntries = entries
                strongSelf.items = items
                strongSelf.itemsUpdated?(items)
                if let size = strongSelf.validLayout {
                    strongSelf.updateItems(size: size, update: true, transition: .immediate, stripTransition: .immediate, synchronous: synchronous)
                }
                if items.isEmpty {
                    if !strongSelf.didSetReady {
                        strongSelf.didSetReady = true
                        strongSelf.isReady.set(.single(true))
                    }
                }
            }))
        }
        self.updateItems(size: size, transition: transition, stripTransition: transition)
    }
    
    private func updateStrips(size: CGSize, itemsAdded: Bool, stripTransition: ContainedViewLayoutTransition) {
        let hadOneStripNode = self.stripNodes.count == 1
        if self.stripNodes.count != self.items.count {
            if self.stripNodes.count < self.items.count {
                for _ in 0 ..< self.items.count - self.stripNodes.count {
                    let stripNode = ASImageNode()
                    stripNode.displaysAsynchronously = false
                    stripNode.displayWithoutProcessing = true
                    stripNode.image = self.activeStripImage
                    stripNode.alpha = 0.2
                    self.stripNodes.append(stripNode)
                    self.stripContainerNode.addSubnode(stripNode)
                }
            } else {
                for i in (self.items.count ..< self.stripNodes.count).reversed() {
                    self.stripNodes[i].removeFromSupernode()
                    self.stripNodes.remove(at: i)
                }
            }
            self.stripContainerNode.addSubnode(self.activeStripNode)
            self.stripContainerNode.addSubnode(self.loadingStripNode)
        }
        if self.appliedStripNodeCurrentIndex != self.currentIndex || itemsAdded {
            if !self.itemNodes.isEmpty {
                self.appliedStripNodeCurrentIndex = self.currentIndex
            }
            
            if let currentItemNode = self.currentItemNode {
                self.positionDisposable.set((currentItemNode.mediaStatus
                    |> deliverOnMainQueue).start(next: { [weak self] statusAndVideoStartTimestamp in
                        if let strongSelf = self {
                            strongSelf.playerStatus = statusAndVideoStartTimestamp
                        }
                    }))
            } else {
                self.positionDisposable.set(nil)
            }
        }
        if hadOneStripNode && self.stripNodes.count > 1 {
            self.stripContainerNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.25)
        }
        let stripInset: CGFloat = 8.0
        let stripSpacing: CGFloat = 4.0
        let stripWidth: CGFloat = max(5.0, floor((size.width - stripInset * 2.0 - stripSpacing * CGFloat(self.stripNodes.count - 1)) / CGFloat(self.stripNodes.count)))
        let currentStripMinX = stripInset + CGFloat(self.currentIndex) * (stripWidth + stripSpacing)
        let currentStripMidX = floor(currentStripMinX + stripWidth / 2.0)
        let lastStripMaxX = stripInset + CGFloat(self.stripNodes.count - 1) * (stripWidth + stripSpacing) + stripWidth
        let stripOffset: CGFloat = min(0.0, max(size.width - stripInset - lastStripMaxX, size.width / 2.0 - currentStripMidX))
        for i in 0 ..< self.stripNodes.count {
            let stripX: CGFloat = stripInset + CGFloat(i) * (stripWidth + stripSpacing)
            if i == 0 && self.stripNodes.count == 1 {
                self.stripNodes[i].isHidden = true
            } else {
                self.stripNodes[i].isHidden = false
            }
            let stripFrame = CGRect(origin: CGPoint(x: stripOffset + stripX, y: 0.0), size: CGSize(width: stripWidth + 1.0, height: 2.0))
            stripTransition.updateFrame(node: self.stripNodes[i], frame: stripFrame)
        }
        
        if self.currentIndex >= 0 && self.currentIndex < self.stripNodes.count {
            var frame = self.stripNodes[self.currentIndex].frame
            stripTransition.updateFrame(node: self.loadingStripNode, frame: frame)
            if let playbackProgress = self.playbackProgress {
                frame.size.width = max(frame.size.height, frame.size.width * playbackProgress)
            }
            stripTransition.updateFrameAdditive(node: self.activeStripNode, frame: frame)
            stripTransition.updateAlpha(node: self.activeStripNode, alpha: self.loading ? 0.0 : 1.0)
            stripTransition.updateAlpha(node: self.loadingStripNode, alpha: self.loading ? 1.0 : 0.0)
            
            self.activeStripNode.isHidden = self.stripNodes.count < 2
            self.loadingStripNode.isHidden = self.stripNodes.count < 2 || !self.loading
        }
    }
    
    private func updateItems(size: CGSize, update: Bool = false, transition: ContainedViewLayoutTransition, stripTransition: ContainedViewLayoutTransition, synchronous: Bool = false) {
        var validIds: [WrappedMediaResourceId] = []
        var addedItemNodesForAdditiveTransition: [PeerInfoAvatarListItemNode] = []
        var additiveTransitionOffset: CGFloat = 0.0
        var itemsAdded = false
        if self.currentIndex >= 0 && self.currentIndex < self.items.count {
            let preloadSpan: Int = 2
            for i in max(0, self.currentIndex - preloadSpan) ... min(self.currentIndex + preloadSpan, self.items.count - 1) {
                validIds.append(self.items[i].id)
                var itemNode: PeerInfoAvatarListItemNode?
                var wasAdded = false
                if let current = self.itemNodes[self.items[i].id] {
                    itemNode = current
                    if update {
                        current.setup(item: self.items[i], synchronous: synchronous && i == self.currentIndex)
                    }
                } else if let peer = self.peer {
                    wasAdded = true
                    let addedItemNode = PeerInfoAvatarListItemNode(context: self.context, peer: peer)
                    itemNode = addedItemNode
                    addedItemNode.setup(item: self.items[i], synchronous: (i == 0 && i == self.currentIndex) || (synchronous && i == self.currentIndex))
                    self.itemNodes[self.items[i].id] = addedItemNode
                    self.contentNode.addSubnode(addedItemNode)
                }
                if let itemNode = itemNode {
                    itemNode.delayCentralityLose = self.pageChangedByPan
                    itemNode.isCentral = i == self.currentIndex
                    itemNode.delayCentralityLose = false
                    
                    let indexOffset = CGFloat(i - self.currentIndex)
                    let itemFrame = CGRect(origin: CGPoint(x: indexOffset * size.width + self.transitionFraction * size.width - size.width / 2.0, y: -size.height / 2.0), size: size)
                    
                    if wasAdded {
                        itemsAdded = true
                        addedItemNodesForAdditiveTransition.append(itemNode)
                        itemNode.frame = itemFrame
                        itemNode.update(size: size, transition: .immediate)
                    } else {
                        additiveTransitionOffset = itemNode.frame.minX - itemFrame.minX
                        transition.updateFrame(node: itemNode, frame: itemFrame)
                        itemNode.update(size: size, transition: .immediate)
                    }
                }
            }
        }
        for itemNode in addedItemNodesForAdditiveTransition {
            transition.animatePositionAdditive(node: itemNode, offset: CGPoint(x: additiveTransitionOffset, y: 0.0))
        }
        var removeIds: [WrappedMediaResourceId] = []
        for (id, _) in self.itemNodes {
            if !validIds.contains(id) {
                removeIds.append(id)
            }
        }
        for id in removeIds {
            if let itemNode = self.itemNodes.removeValue(forKey: id) {
                itemNode.removeFromSupernode()
            }
        }
        
        self.updateStrips(size: size, itemsAdded: itemsAdded, stripTransition: stripTransition)
        
        if let item = self.items.first, let itemNode = self.itemNodes[item.id] {
            if !self.didSetReady {
                self.didSetReady = true
                self.isReady.set(itemNode.isReady.get())
            }
        }
    }
}

final class PeerInfoAvatarTransformContainerNode: ASDisplayNode {
    let context: AccountContext
    let avatarNode: AvatarNode
    
    fileprivate var videoNode: UniversalVideoNode?
    private var videoContent: NativeVideoContent?
    private var videoStartTimestamp: Double?
    
    var isExpanded: Bool = false
    var canAttachVideo: Bool = true {
        didSet {
            if oldValue != self.canAttachVideo {
                self.videoNode?.canAttachContent = !self.isExpanded && self.canAttachVideo
            }
        }
    }
    
    var tapped: (() -> Void)?
    
    private var isFirstAvatarLoading = true
    var item: PeerInfoAvatarListItem?
    
    private let playbackStartDisposable = MetaDisposable()
    
    init(context: AccountContext) {
        self.context = context
        let avatarFont = avatarPlaceholderFont(size: floor(100.0 * 16.0 / 37.0))
        self.avatarNode = AvatarNode(font: avatarFont)
        
        super.init()
        
        self.addSubnode(self.avatarNode)
        self.avatarNode.frame = CGRect(origin: CGPoint(x: -50.0, y: -50.0), size: CGSize(width: 100.0, height: 100.0))
        
        self.avatarNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tapGesture(_:))))
    }
    
    deinit {
        self.playbackStartDisposable.dispose()
    }
    
    @objc private func tapGesture(_ recognizer: UITapGestureRecognizer) {
        if case .ended = recognizer.state {
            self.tapped?()
        }
    }
        
    func updateTransitionFraction(_ fraction: CGFloat, transition: ContainedViewLayoutTransition) {
        if let videoNode = self.videoNode {
            if case .immediate = transition, fraction == 1.0 {
                return
            }
            if fraction > 0.0 {
                self.videoNode?.pause()
            } else {
                self.videoNode?.play()
            }
            transition.updateAlpha(node: videoNode, alpha: 1.0 - fraction)
        }
    }
        
    var removedPhotoResourceIds = Set<String>()
    func update(peer: Peer?, item: PeerInfoAvatarListItem?, theme: PresentationTheme, avatarSize: CGFloat, isExpanded: Bool) {
        if let peer = peer {
            let previousItem = self.item
            var item = item
            self.item = item
            
            var overrideImage: AvatarNodeImageOverride?
            if peer.isDeleted {
                overrideImage = .deletedIcon
            } else if let previousItem = previousItem, item == nil {
                if case let .image(image) = previousItem, let rep = image.1.last {
                    self.removedPhotoResourceIds.insert(rep.representation.resource.id.uniqueId)
                }
                overrideImage = AvatarNodeImageOverride.none
                item = nil
            } else if let rep = peer.profileImageRepresentations.last, self.removedPhotoResourceIds.contains(rep.resource.id.uniqueId) {
                overrideImage = AvatarNodeImageOverride.none
                item = nil
            }
            self.avatarNode.setPeer(context: self.context, theme: theme, peer: peer, overrideImage: overrideImage, synchronousLoad: self.isFirstAvatarLoading, displayDimensions: CGSize(width: avatarSize, height: avatarSize), storeUnrounded: true)
            self.isFirstAvatarLoading = false
            
            self.avatarNode.frame = CGRect(origin: CGPoint(x: -avatarSize / 2.0, y: -avatarSize / 2.0), size: CGSize(width: avatarSize, height: avatarSize))
            self.avatarNode.font = avatarPlaceholderFont(size: floor(avatarSize * 16.0 / 37.0))

            if let item = item {
                let representations: [ImageRepresentationWithReference]
                let videoRepresentations: [VideoRepresentationWithReference]
                let immediateThumbnailData: Data?
                var id: Int64
                switch item {
                case let .topImage(topRepresentations, videoRepresentationsValue, immediateThumbnail):
                    representations = topRepresentations
                    videoRepresentations = videoRepresentationsValue
                    immediateThumbnailData = immediateThumbnail
                    id = Int64(peer.id.id)
                    if let resource = videoRepresentations.first?.representation.resource as? CloudPhotoSizeMediaResource {
                        id = id &+ resource.photoId
                    }
                case let .image(reference, imageRepresentations, videoRepresentationsValue, immediateThumbnail):
                    representations = imageRepresentations
                    videoRepresentations = videoRepresentationsValue
                    immediateThumbnailData = immediateThumbnail
                    if case let .cloud(imageId, _, _) = reference {
                        id = imageId
                    } else {
                        id = Int64(peer.id.id)
                    }
                }
                
                if let video = videoRepresentations.last, let peerReference = PeerReference(peer) {
                    let videoFileReference = FileMediaReference.avatarList(peer: peerReference, media: TelegramMediaFile(fileId: MediaId(namespace: Namespaces.Media.LocalFile, id: 0), partialReference: nil, resource: video.representation.resource, previewRepresentations: representations.map { $0.representation }, videoThumbnails: [], immediateThumbnailData: immediateThumbnailData, mimeType: "video/mp4", size: nil, attributes: [.Animated, .Video(duration: 0, size: video.representation.dimensions, flags: [])]))
                    let videoContent = NativeVideoContent(id: .profileVideo(id, nil), fileReference: videoFileReference, streamVideo: isMediaStreamable(resource: video.representation.resource) ? .conservative : .none, loopVideo: true, enableSound: false, fetchAutomatically: true, onlyFullSizeThumbnail: false, useLargeThumbnail: true, autoFetchFullSizeThumbnail: true, startTimestamp: video.representation.startTimestamp, continuePlayingWithoutSoundOnLostAudioSession: false, placeholderColor: .clear)
                    if videoContent.id != self.videoContent?.id {
                        self.videoNode?.removeFromSupernode()
                        
                        let mediaManager = self.context.sharedContext.mediaManager
                        let videoNode = UniversalVideoNode(postbox: self.context.account.postbox, audioSession: mediaManager.audioSession, manager: mediaManager.universalVideoManager, decoration: GalleryVideoDecoration(), content: videoContent, priority: .embedded)
                        videoNode.isUserInteractionEnabled = false
                        videoNode.isHidden = true
                        
                        if let startTimestamp = video.representation.startTimestamp {
                            self.videoStartTimestamp = startTimestamp
                            self.playbackStartDisposable.set((videoNode.status
                            |> map { status -> Bool in
                                if let status = status, case .playing = status.status {
                                    return true
                                } else {
                                    return false
                                }
                            }
                            |> filter { playing in
                                return playing
                            }
                            |> take(1)
                            |> deliverOnMainQueue).start(completed: { [weak self] in
                                if let strongSelf = self {
                                    Queue.mainQueue().after(0.15) {
                                        strongSelf.videoNode?.isHidden = false
                                    }
                                }
                            }))
                        } else {
                            self.videoStartTimestamp = nil
                            self.playbackStartDisposable.set(nil)
                            videoNode.isHidden = false
                        }
                        
                        self.videoContent = videoContent
                        self.videoNode = videoNode
                        
                        let maskPath = UIBezierPath(ovalIn: CGRect(origin: CGPoint(), size: self.avatarNode.frame.size))
                        let shape = CAShapeLayer()
                        shape.path = maskPath.cgPath
                        videoNode.layer.mask = shape
                                                            
                        self.addSubnode(videoNode)
                    }
                } else if let videoNode = self.videoNode {
                    self.videoContent = nil
                    self.videoNode = nil
                    
                    videoNode.removeFromSupernode()
                }
            } else if let videoNode = self.videoNode {
                self.videoContent = nil
                self.videoNode = nil
                
                videoNode.removeFromSupernode()
            }
            
            if let videoNode = self.videoNode {
                if self.canAttachVideo {
                    videoNode.updateLayout(size: self.avatarNode.frame.size, transition: .immediate)
                }
                videoNode.frame = self.avatarNode.frame
                
                if isExpanded == videoNode.canAttachContent {
                    self.isExpanded = isExpanded
                    let update = {
                        videoNode.canAttachContent = !self.isExpanded && self.canAttachVideo
                        if videoNode.canAttachContent {
                            videoNode.play()
                        }
                    }
                    if isExpanded {
                        DispatchQueue.main.async {
                            update()
                        }
                    } else {
                        update()
                    }
                }
            }
        }
    }
}

final class PeerInfoEditingAvatarOverlayNode: ASDisplayNode {
    private let context: AccountContext
    
    private let imageNode: ImageNode
    private let updatingAvatarOverlay: ASImageNode
    private let iconNode: ASImageNode
    private var statusNode: RadialStatusNode
    
    private var currentRepresentation: TelegramMediaImageRepresentation?
    
    init(context: AccountContext) {
        self.context = context
        
        self.imageNode = ImageNode(enableEmpty: true)
        
        self.updatingAvatarOverlay = ASImageNode()
        self.updatingAvatarOverlay.displayWithoutProcessing = true
        self.updatingAvatarOverlay.displaysAsynchronously = false
        self.updatingAvatarOverlay.alpha = 0.0
        
        self.statusNode = RadialStatusNode(backgroundNodeColor: UIColor(rgb: 0x000000, alpha: 0.6))
        self.statusNode.isUserInteractionEnabled = false
        
        self.iconNode = ASImageNode()
        self.iconNode.image = generateTintedImage(image: UIImage(bundleImageName: "Avatar/EditAvatarIconLarge"), color: .white)
        self.iconNode.alpha = 0.0
        
        super.init()
        
        self.imageNode.frame = CGRect(origin: CGPoint(x: -50.0, y: -50.0), size: CGSize(width: 100.0, height: 100.0))
        self.updatingAvatarOverlay.frame = self.imageNode.frame
        
        let radialStatusSize: CGFloat = 50.0
        let imagePosition = self.imageNode.position
        self.statusNode.frame = CGRect(origin: CGPoint(x: floor(imagePosition.x - radialStatusSize / 2.0), y: floor(imagePosition.y - radialStatusSize / 2.0)), size: CGSize(width: radialStatusSize, height: radialStatusSize))
        
        if let image = self.iconNode.image {
            self.iconNode.frame = CGRect(origin: CGPoint(x: floor(imagePosition.x - image.size.width / 2.0), y: floor(imagePosition.y - image.size.height / 2.0)), size: image.size)
        }
        
        self.addSubnode(self.imageNode)
        self.addSubnode(self.updatingAvatarOverlay)
        self.addSubnode(self.statusNode)
    }
    
    func updateTransitionFraction(_ fraction: CGFloat, transition: ContainedViewLayoutTransition) {
        transition.updateAlpha(node: self, alpha: 1.0 - fraction)
    }
    
    func update(peer: Peer?, item: PeerInfoAvatarListItem?, updatingAvatar: PeerInfoUpdatingAvatar?, uploadProgress: CGFloat?, theme: PresentationTheme, avatarSize: CGFloat, isEditing: Bool) {
        guard let peer = peer else {
            return
        }
        
        self.imageNode.frame = CGRect(origin: CGPoint(x: -avatarSize / 2.0, y: -avatarSize / 2.0), size: CGSize(width: avatarSize, height: avatarSize))
        self.updatingAvatarOverlay.frame = self.imageNode.frame
        
        let transition = ContainedViewLayoutTransition.animated(duration: 0.2, curve: .linear)
        
        if canEditPeerInfo(context: self.context, peer: peer) {
            var overlayHidden = true
            if let updatingAvatar = updatingAvatar {
                overlayHidden = false
                
                self.statusNode.transitionToState(.progress(color: .white, lineWidth: nil, value: max(0.027, uploadProgress ?? 0.0), cancelEnabled: true))
                
                if case let .image(representation) = updatingAvatar {
                    if representation != self.currentRepresentation {
                        self.currentRepresentation = representation
                        if let signal = peerAvatarImage(account: context.account, peerReference: nil, authorOfMessage: nil, representation: representation, displayDimensions: CGSize(width: avatarSize, height: avatarSize), emptyColor: nil, synchronousLoad: false, provideUnrounded: false) {
                            self.imageNode.setSignal(signal |> map { $0?.0 })
                        }
                    }
                }
                
                transition.updateAlpha(node: self.updatingAvatarOverlay, alpha: overlayHidden ? 0.0 : 1.0)
            } else {
                let targetOverlayAlpha: CGFloat = overlayHidden ? 0.0 : 1.0
                if self.updatingAvatarOverlay.alpha != targetOverlayAlpha {
                    let update = {
                        self.statusNode.transitionToState(.none)
                        self.currentRepresentation = nil
                        self.imageNode.setSignal(.single(nil))
                        transition.updateAlpha(node: self.updatingAvatarOverlay, alpha: overlayHidden ? 0.0 : 1.0)
                    }
                    Queue.mainQueue().after(0.3) {
                        update()
                    }
                }
            }
            if !overlayHidden && self.updatingAvatarOverlay.image == nil {
                self.updatingAvatarOverlay.image = generateFilledCircleImage(diameter: avatarSize, color: UIColor(white: 0.0, alpha: 0.4), backgroundColor: nil)
            }
        } else {
            self.statusNode.transitionToState(.none)
            self.currentRepresentation = nil
            transition.updateAlpha(node: self.iconNode, alpha: 0.0)
            transition.updateAlpha(node: self.updatingAvatarOverlay, alpha: 0.0)
        }
    }
}

final class PeerInfoEditingAvatarNode: ASDisplayNode {
    private let context: AccountContext
    let avatarNode: AvatarNode
    fileprivate var videoNode: UniversalVideoNode?
    private var videoContent: NativeVideoContent?
    private var videoStartTimestamp: Double?
    var item: PeerInfoAvatarListItem?
    
    var tapped: ((Bool) -> Void)?
        
    var canAttachVideo: Bool = true
    
    init(context: AccountContext) {
        self.context = context
        let avatarFont = avatarPlaceholderFont(size: floor(100.0 * 16.0 / 37.0))
        self.avatarNode = AvatarNode(font: avatarFont)
    
        super.init()
        
        self.addSubnode(self.avatarNode)
        self.avatarNode.frame = CGRect(origin: CGPoint(x: -50.0, y: -50.0), size: CGSize(width: 100.0, height: 100.0))
    
        self.avatarNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tapGesture(_:))))
    }
    
    @objc private func tapGesture(_ recognizer: UITapGestureRecognizer) {
        if case .ended = recognizer.state {
            self.tapped?(false)
        }
    }
    
    func reset() {
        guard let videoNode = self.videoNode else {
            return
        }
        videoNode.isHidden = true
        videoNode.seek(self.videoStartTimestamp ?? 0.0)
        Queue.mainQueue().after(0.15) {
            videoNode.isHidden = false
        }
    }
    
    var removedPhotoResourceIds = Set<String>()
    func update(peer: Peer?, item: PeerInfoAvatarListItem?, updatingAvatar: PeerInfoUpdatingAvatar?, uploadProgress: CGFloat?, theme: PresentationTheme, avatarSize: CGFloat, isEditing: Bool) {
        guard let peer = peer else {
            return
        }
        
        let previousItem = self.item
        var item = item
        self.item = item
                
        let overrideImage: AvatarNodeImageOverride?
        if canEditPeerInfo(context: self.context, peer: peer), peer.profileImageRepresentations.isEmpty {
            overrideImage = .editAvatarIcon
        } else if let previousItem = previousItem, item == nil {
            if case let .image(image) = previousItem, let rep = image.1.last {
                self.removedPhotoResourceIds.insert(rep.representation.resource.id.uniqueId)
            }
            overrideImage = AvatarNodeImageOverride.none
            item = nil
        } else if let rep = peer.profileImageRepresentations.last, self.removedPhotoResourceIds.contains(rep.resource.id.uniqueId) {
            overrideImage = AvatarNodeImageOverride.none
            item = nil
        } else {
            overrideImage = nil
        }
        self.avatarNode.font = avatarPlaceholderFont(size: floor(avatarSize * 16.0 / 37.0))
        self.avatarNode.setPeer(context: self.context, theme: theme, peer: peer, overrideImage: overrideImage, synchronousLoad: false, displayDimensions: CGSize(width: avatarSize, height: avatarSize))
        self.avatarNode.frame = CGRect(origin: CGPoint(x: -avatarSize / 2.0, y: -avatarSize / 2.0), size: CGSize(width: avatarSize, height: avatarSize))
        
        if let item = item {
            let representations: [ImageRepresentationWithReference]
            let videoRepresentations: [VideoRepresentationWithReference]
            let immediateThumbnailData: Data?
            var id: Int64
            switch item {
                case let .topImage(topRepresentations, videoRepresentationsValue, immediateThumbnail):
                    representations = topRepresentations
                    videoRepresentations = videoRepresentationsValue
                    immediateThumbnailData = immediateThumbnail
                    id = Int64(peer.id.id)
                    if let resource = videoRepresentations.first?.representation.resource as? CloudPhotoSizeMediaResource {
                        id = id &+ resource.photoId
                    }
                case let .image(reference, imageRepresentations, videoRepresentationsValue, immediateThumbnail):
                    representations = imageRepresentations
                    videoRepresentations = videoRepresentationsValue
                    immediateThumbnailData = immediateThumbnail
                    if case let .cloud(imageId, _, _) = reference {
                        id = imageId
                    } else {
                        id = Int64(peer.id.id)
                    }
            }
            
            if let video = videoRepresentations.last, let peerReference = PeerReference(peer) {
                let videoFileReference = FileMediaReference.avatarList(peer: peerReference, media: TelegramMediaFile(fileId: MediaId(namespace: Namespaces.Media.LocalFile, id: 0), partialReference: nil, resource: video.representation.resource, previewRepresentations: representations.map { $0.representation }, videoThumbnails: [], immediateThumbnailData: immediateThumbnailData, mimeType: "video/mp4", size: nil, attributes: [.Animated, .Video(duration: 0, size: video.representation.dimensions, flags: [])]))
                let videoContent = NativeVideoContent(id: .profileVideo(id, nil), fileReference: videoFileReference, streamVideo: isMediaStreamable(resource: video.representation.resource) ? .conservative : .none, loopVideo: true, enableSound: false, fetchAutomatically: true, onlyFullSizeThumbnail: false, useLargeThumbnail: true, autoFetchFullSizeThumbnail: true, startTimestamp: video.representation.startTimestamp, continuePlayingWithoutSoundOnLostAudioSession: false, placeholderColor: .clear)
                if videoContent.id != self.videoContent?.id {
                    self.videoNode?.removeFromSupernode()
                    
                    let mediaManager = self.context.sharedContext.mediaManager
                    let videoNode = UniversalVideoNode(postbox: self.context.account.postbox, audioSession: mediaManager.audioSession, manager: mediaManager.universalVideoManager, decoration: GalleryVideoDecoration(), content: videoContent, priority: .gallery)
                    videoNode.isUserInteractionEnabled = false
                    self.videoStartTimestamp = video.representation.startTimestamp
                    self.videoContent = videoContent
                    self.videoNode = videoNode
                    
                    let maskPath = UIBezierPath(ovalIn: CGRect(origin: CGPoint(), size: self.avatarNode.frame.size))
                    let shape = CAShapeLayer()
                    shape.path = maskPath.cgPath
                    videoNode.layer.mask = shape
                    
                    self.insertSubnode(videoNode, aboveSubnode: self.avatarNode)
                }
            } else if let videoNode = self.videoNode {
                self.videoStartTimestamp = nil
                self.videoContent = nil
                self.videoNode = nil
                
                videoNode.removeFromSupernode()
            }
        } else if let videoNode = self.videoNode {
            self.videoStartTimestamp = nil
            self.videoContent = nil
            self.videoNode = nil
            
            videoNode.removeFromSupernode()
        }
        
        if let videoNode = self.videoNode {
            if self.canAttachVideo {
                videoNode.updateLayout(size: self.avatarNode.frame.size, transition: .immediate)
            }
            videoNode.frame = self.avatarNode.frame
            
            if isEditing != videoNode.canAttachContent {
                videoNode.canAttachContent = isEditing && self.canAttachVideo
            }
        }
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if self.avatarNode.frame.contains(point) {
            return self.avatarNode.view
        }
        return super.hitTest(point, with: event)
    }
}

final class PeerInfoAvatarListNode: ASDisplayNode {
    let avatarContainerNode: PeerInfoAvatarTransformContainerNode
    let listContainerTransformNode: ASDisplayNode
    let listContainerNode: PeerInfoAvatarListContainerNode
    
    let isReady = Promise<Bool>()
   
    var arguments: (Peer?, PresentationTheme, CGFloat, Bool)?
    var item: PeerInfoAvatarListItem?
    
    var itemsUpdated: (([PeerInfoAvatarListItem]) -> Void)?
    
    init(context: AccountContext,  readyWhenGalleryLoads: Bool) {
        self.avatarContainerNode = PeerInfoAvatarTransformContainerNode(context: context)
        self.listContainerTransformNode = ASDisplayNode()
        self.listContainerNode = PeerInfoAvatarListContainerNode(context: context)
        self.listContainerNode.clipsToBounds = true
        self.listContainerNode.isHidden = true
        
        super.init()
        
        self.addSubnode(self.avatarContainerNode)
        self.listContainerTransformNode.addSubnode(self.listContainerNode)
        self.addSubnode(self.listContainerTransformNode)
        
        let avatarReady = (self.avatarContainerNode.avatarNode.ready
        |> mapToSignal { _ -> Signal<Bool, NoError> in
            return .complete()
        }
        |> then(.single(true)))
        
        let galleryReady = self.listContainerNode.isReady.get()
        |> filter { value in
            return value
        }
        |> take(1)
        
        let combinedSignal: Signal<Bool, NoError>
        if readyWhenGalleryLoads {
            combinedSignal = combineLatest(queue: .mainQueue(),
                avatarReady,
                galleryReady
            )
            |> map { lhs, rhs in
                return lhs && rhs
            }
        } else {
            combinedSignal = avatarReady
        }
        
        self.isReady.set(combinedSignal
        |> filter { value in
            return value
        }
        |> take(1))
        
        self.listContainerNode.itemsUpdated = { [weak self] items in
            if let strongSelf = self {
                strongSelf.item = items.first
                strongSelf.itemsUpdated?(items)
                if let (peer, theme, avatarSize, isExpanded) = strongSelf.arguments {
                    strongSelf.avatarContainerNode.update(peer: peer, item: strongSelf.item, theme: theme, avatarSize: avatarSize, isExpanded: isExpanded)
                }
            }
        }
    }
    
    func update(size: CGSize, avatarSize: CGFloat, isExpanded: Bool, peer: Peer?, theme: PresentationTheme, transition: ContainedViewLayoutTransition) {
        self.arguments = (peer, theme, avatarSize, isExpanded)
        self.avatarContainerNode.update(peer: peer, item: self.item, theme: theme, avatarSize: avatarSize, isExpanded: isExpanded)
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if !self.listContainerNode.isHidden {
            if let result = self.listContainerNode.view.hitTest(self.view.convert(point, to: self.listContainerNode.view), with: event) {
                return result
            }
        } else {
            if let result = self.avatarContainerNode.avatarNode.view.hitTest(self.view.convert(point, to: self.avatarContainerNode.avatarNode.view), with: event) {
                return result
            }
        }
        
        return super.hitTest(point, with: event)
    }
    
    func animateAvatarCollapse(transition: ContainedViewLayoutTransition) {
        if let currentItemNode = self.listContainerNode.currentItemNode, case .animated = transition {
            if let _ = self.avatarContainerNode.videoNode {

            } else if let unroundedImage = self.avatarContainerNode.avatarNode.unroundedImage {
                let avatarCopyView = UIImageView()
                avatarCopyView.image = unroundedImage
                avatarCopyView.frame = self.avatarContainerNode.avatarNode.frame
                avatarCopyView.center = currentItemNode.imageNode.position
                currentItemNode.view.addSubview(avatarCopyView)
                let scale = currentItemNode.imageNode.bounds.height / avatarCopyView.bounds.height
                avatarCopyView.layer.transform = CATransform3DMakeScale(scale, scale, scale)
                avatarCopyView.alpha = 0.0
                transition.updateAlpha(layer: avatarCopyView.layer, alpha: 1.0, completion: { [weak avatarCopyView] _ in
                    Queue.mainQueue().after(0.1, {
                        avatarCopyView?.removeFromSuperview()
                    })
                })
            }
        }
    }
}

final class PeerInfoHeaderNavigationButton: HighlightableButtonNode {
    private let regularTextNode: ImmediateTextNode
    private let whiteTextNode: ImmediateTextNode
    private let iconNode: ASImageNode
    
    private var key: PeerInfoHeaderNavigationButtonKey?
    private var theme: PresentationTheme?
    
    var isWhite: Bool = false {
        didSet {
            if self.isWhite != oldValue {
                self.regularTextNode.isHidden = self.isWhite
                self.whiteTextNode.isHidden = !self.isWhite
            }
        }
    }
    
    var action: (() -> Void)?
    
    init() {
        self.regularTextNode = ImmediateTextNode()
        self.whiteTextNode = ImmediateTextNode()
        self.whiteTextNode.isHidden = true
        
        self.iconNode = ASImageNode()
        self.iconNode.displaysAsynchronously = false
        self.iconNode.displayWithoutProcessing = true
        
        super.init(pointerStyle: .default)
        
        self.addSubnode(self.regularTextNode)
        self.addSubnode(self.whiteTextNode)
        self.addSubnode(self.iconNode)
        
        self.addTarget(self, action: #selector(self.pressed), forControlEvents: .touchUpInside)
    }
    
    @objc private func pressed() {
        self.action?()
    }
    
    func update(key: PeerInfoHeaderNavigationButtonKey, presentationData: PresentationData, height: CGFloat) -> CGSize {
        let textSize: CGSize
        if self.key != key || self.theme !== presentationData.theme {
            self.key = key
            self.theme = presentationData.theme
            
            let text: String
            var icon: UIImage?
            var isBold = false
            switch key {
                case .edit:
                    text = presentationData.strings.Common_Edit
                case .done, .cancel, .selectionDone:
                    text = presentationData.strings.Common_Done
                    isBold = true
                case .select:
                    text = presentationData.strings.Common_Select
                case .search:
                    text = ""
                    icon = PresentationResourcesRootController.navigationCompactSearchIcon(presentationData.theme)
                case .editPhoto:
                    text = presentationData.strings.Settings_EditPhoto
                case .editVideo:
                    text = presentationData.strings.Settings_EditVideo
            }
            
            let font: UIFont = isBold ? Font.semibold(17.0) : Font.regular(17.0)
            
            self.regularTextNode.attributedText = NSAttributedString(string: text, font: font, textColor: presentationData.theme.rootController.navigationBar.accentTextColor)
            self.whiteTextNode.attributedText = NSAttributedString(string: text, font: font, textColor: .white)
            self.iconNode.image = icon
            
            textSize = self.regularTextNode.updateLayout(CGSize(width: 200.0, height: .greatestFiniteMagnitude))
            let _ = self.whiteTextNode.updateLayout(CGSize(width: 200.0, height: .greatestFiniteMagnitude))
        } else {
            textSize = self.regularTextNode.bounds.size
        }
        
        let inset: CGFloat = 0.0
        
        let textFrame = CGRect(origin: CGPoint(x: inset, y: floor((height - textSize.height) / 2.0)), size: textSize)
        self.regularTextNode.frame = textFrame
        self.whiteTextNode.frame = textFrame
        
        if let image = self.iconNode.image {
            self.iconNode.frame = CGRect(origin: CGPoint(x: inset, y: floor((height - image.size.height) / 2.0)), size: image.size)
            
            return CGSize(width: image.size.width + inset * 2.0, height: height)
        } else {
            return CGSize(width: textSize.width + inset * 2.0, height: height)
        }
    }
}

enum PeerInfoHeaderNavigationButtonKey {
    case edit
    case done
    case cancel
    case select
    case selectionDone
    case search
    case editPhoto
    case editVideo
}

struct PeerInfoHeaderNavigationButtonSpec: Equatable {
    let key: PeerInfoHeaderNavigationButtonKey
    let isForExpandedView: Bool
}

final class PeerInfoHeaderNavigationButtonContainerNode: ASDisplayNode {
    private var buttonNodes: [PeerInfoHeaderNavigationButtonKey: PeerInfoHeaderNavigationButton] = [:]
    
    private var currentButtons: [PeerInfoHeaderNavigationButtonSpec] = []
    
    var isWhite: Bool = false {
        didSet {
            if self.isWhite != oldValue {
                for (_, buttonNode) in self.buttonNodes {
                    buttonNode.isWhite = self.isWhite
                }
            }
        }
    }
    
    var performAction: ((PeerInfoHeaderNavigationButtonKey) -> Void)?
    
    override init() {
        super.init()
    }
    
    func update(size: CGSize, presentationData: PresentationData, buttons: [PeerInfoHeaderNavigationButtonSpec], expandFraction: CGFloat, transition: ContainedViewLayoutTransition) {
        let maximumExpandOffset: CGFloat = 14.0
        let expandOffset: CGFloat = -expandFraction * maximumExpandOffset
        if self.currentButtons != buttons {
            self.currentButtons = buttons
            
            var nextRegularButtonOrigin = size.width - 16.0
            var nextExpandedButtonOrigin = size.width - 16.0
            for spec in buttons.reversed() {
                let buttonNode: PeerInfoHeaderNavigationButton
                var wasAdded = false
                if let current = self.buttonNodes[spec.key] {
                    buttonNode = current
                } else {
                    wasAdded = true
                    buttonNode = PeerInfoHeaderNavigationButton()
                    self.buttonNodes[spec.key] = buttonNode
                    self.addSubnode(buttonNode)
                    buttonNode.isWhite = self.isWhite
                    buttonNode.action = { [weak self] in
                        self?.performAction?(spec.key)
                    }
                }
                let buttonSize = buttonNode.update(key: spec.key, presentationData: presentationData, height: size.height)
                var nextButtonOrigin = spec.isForExpandedView ? nextExpandedButtonOrigin : nextRegularButtonOrigin
                let buttonFrame = CGRect(origin: CGPoint(x: nextButtonOrigin - buttonSize.width, y: expandOffset + (spec.isForExpandedView ? maximumExpandOffset : 0.0)), size: buttonSize)
                nextButtonOrigin -= buttonSize.width + 4.0
                if spec.isForExpandedView {
                    nextExpandedButtonOrigin = nextButtonOrigin
                } else {
                    nextRegularButtonOrigin = nextButtonOrigin
                }
                let alphaFactor: CGFloat = spec.isForExpandedView ? expandFraction : (1.0 - expandFraction)
                if wasAdded {
                    buttonNode.frame = buttonFrame
                    buttonNode.alpha = 0.0
                    transition.updateAlpha(node: buttonNode, alpha: alphaFactor * alphaFactor)
                } else {
                    transition.updateFrameAdditiveToCenter(node: buttonNode, frame: buttonFrame)
                    transition.updateAlpha(node: buttonNode, alpha: alphaFactor * alphaFactor)
                }
            }
            var removeKeys: [PeerInfoHeaderNavigationButtonKey] = []
            for (key, _) in self.buttonNodes {
                if !buttons.contains(where: { $0.key == key }) {
                    removeKeys.append(key)
                }
            }
            for key in removeKeys {
                if let buttonNode = self.buttonNodes.removeValue(forKey: key) {
                    buttonNode.removeFromSupernode()
                }
            }
        } else {
            var nextRegularButtonOrigin = size.width - 16.0
            var nextExpandedButtonOrigin = size.width - 16.0
            for spec in buttons.reversed() {
                if let buttonNode = self.buttonNodes[spec.key] {
                    let buttonSize = buttonNode.bounds.size
                    var nextButtonOrigin = spec.isForExpandedView ? nextExpandedButtonOrigin : nextRegularButtonOrigin
                    let buttonFrame = CGRect(origin: CGPoint(x: nextButtonOrigin - buttonSize.width, y: expandOffset + (spec.isForExpandedView ? maximumExpandOffset : 0.0)), size: buttonSize)
                    nextButtonOrigin -= buttonSize.width + 4.0
                    if spec.isForExpandedView {
                        nextExpandedButtonOrigin = nextButtonOrigin
                    } else {
                        nextRegularButtonOrigin = nextButtonOrigin
                    }
                    transition.updateFrameAdditiveToCenter(node: buttonNode, frame: buttonFrame)
                    let alphaFactor: CGFloat = spec.isForExpandedView ? expandFraction : (1.0 - expandFraction)
                    
                    
                    var buttonTransition = transition
                    if case let .animated(duration, curve) = buttonTransition, alphaFactor == 0.0 {
                        buttonTransition = .animated(duration: duration * 0.25, curve: curve)
                    }
                    buttonTransition.updateAlpha(node: buttonNode, alpha: alphaFactor * alphaFactor)
                }
            }
        }
    }
}

final class PeerInfoHeaderRegularContentNode: ASDisplayNode {
    
}

enum PeerInfoHeaderTextFieldNodeKey {
    case firstName
    case lastName
    case title
    case description
}

protocol PeerInfoHeaderTextFieldNode: ASDisplayNode {
    var text: String { get }
    
    func update(width: CGFloat, safeInset: CGFloat, hasPrevious: Bool, placeholder: String, isEnabled: Bool, presentationData: PresentationData, updateText: String?) -> CGFloat
}

final class PeerInfoHeaderSingleLineTextFieldNode: ASDisplayNode, PeerInfoHeaderTextFieldNode, UITextFieldDelegate {
    private let textNode: TextFieldNode
    private let measureTextNode: ImmediateTextNode
    private let clearIconNode: ASImageNode
    private let clearButtonNode: HighlightableButtonNode
    private let topSeparator: ASDisplayNode
    
    private var theme: PresentationTheme?
    
    var text: String {
        return self.textNode.textField.text ?? ""
    }
    
    override init() {
        self.textNode = TextFieldNode()
        self.measureTextNode = ImmediateTextNode()
        self.measureTextNode.maximumNumberOfLines = 0
        
        self.clearIconNode = ASImageNode()
        self.clearIconNode.isLayerBacked = true
        self.clearIconNode.displayWithoutProcessing = true
        self.clearIconNode.displaysAsynchronously = false
        self.clearIconNode.isHidden = true
        
        self.clearButtonNode = HighlightableButtonNode()
        self.clearButtonNode.isHidden = true
        
        self.topSeparator = ASDisplayNode()
        
        super.init()
        
        self.addSubnode(self.textNode)
        self.addSubnode(self.clearIconNode)
        self.addSubnode(self.clearButtonNode)
        self.addSubnode(self.topSeparator)
        
        self.textNode.textField.delegate = self
        
        self.clearButtonNode.addTarget(self, action: #selector(self.clearButtonPressed), forControlEvents: .touchUpInside)
        self.clearButtonNode.highligthedChanged = { [weak self] highlighted in
            if let strongSelf = self {
                if highlighted {
                    strongSelf.clearIconNode.layer.removeAnimation(forKey: "opacity")
                    strongSelf.clearIconNode.alpha = 0.4
                } else {
                    strongSelf.clearIconNode.alpha = 1.0
                    strongSelf.clearIconNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
                }
            }
        }
    }
    
    @objc private func clearButtonPressed() {
        self.textNode.textField.text = ""
        self.updateClearButtonVisibility()
    }
    
    @objc func textFieldDidBeginEditing(_ textField: UITextField) {
        self.updateClearButtonVisibility()
    }
    
    @objc func textFieldDidEndEditing(_ textField: UITextField) {
        self.updateClearButtonVisibility()
    }
    
    private func updateClearButtonVisibility() {
        let isHidden = !self.textNode.textField.isFirstResponder || self.text.isEmpty
        self.clearIconNode.isHidden = isHidden
        self.clearButtonNode.isHidden = isHidden
        self.clearButtonNode.isAccessibilityElement = isHidden
    }
    
    func update(width: CGFloat, safeInset: CGFloat, hasPrevious: Bool, placeholder: String, isEnabled: Bool, presentationData: PresentationData, updateText: String?) -> CGFloat {
        let titleFont = Font.regular(presentationData.listsFontSize.itemListBaseFontSize)
        self.textNode.textField.font = titleFont
        
        if self.theme !== presentationData.theme {
            self.theme = presentationData.theme
            self.textNode.textField.textColor = presentationData.theme.list.itemPrimaryTextColor
            self.textNode.textField.keyboardAppearance = presentationData.theme.rootController.keyboardColor.keyboardAppearance
            self.textNode.textField.tintColor = presentationData.theme.list.itemAccentColor
            
            self.clearIconNode.image = PresentationResourcesItemList.itemListClearInputIcon(presentationData.theme)
        }
        
        let attributedPlaceholderText = NSAttributedString(string: placeholder, font: titleFont, textColor: presentationData.theme.list.itemPlaceholderTextColor)
        if self.textNode.textField.attributedPlaceholder == nil || !self.textNode.textField.attributedPlaceholder!.isEqual(to: attributedPlaceholderText) {
            self.textNode.textField.attributedPlaceholder = attributedPlaceholderText
            self.textNode.textField.accessibilityHint = attributedPlaceholderText.string
        }
        
        if let updateText = updateText {
            self.textNode.textField.text = updateText
        }
        
        self.topSeparator.backgroundColor = presentationData.theme.list.itemBlocksSeparatorColor
        self.topSeparator.frame = CGRect(origin: CGPoint(x: safeInset + (hasPrevious ? 16.0 : 0.0), y: 0.0), size: CGSize(width: width, height: UIScreenPixel))
        
        let measureText = "|"
        let attributedMeasureText = NSAttributedString(string: measureText, font: titleFont, textColor: .black)
        self.measureTextNode.attributedText = attributedMeasureText
        let measureTextSize = self.measureTextNode.updateLayout(CGSize(width: width - safeInset * 2.0 - 16.0 * 2.0 - 38.0, height: .greatestFiniteMagnitude))
        
        let height = measureTextSize.height + 22.0
        
        let buttonSize = CGSize(width: 38.0, height: height)
        self.clearButtonNode.frame = CGRect(origin: CGPoint(x: width - safeInset - buttonSize.width, y: 0.0), size: buttonSize)
        if let image = self.clearIconNode.image {
            self.clearIconNode.frame = CGRect(origin: CGPoint(x: width - safeInset - buttonSize.width + floor((buttonSize.width - image.size.width) / 2.0), y: floor((height - image.size.height) / 2.0)), size: image.size)
        }
        
        self.textNode.frame = CGRect(origin: CGPoint(x: safeInset + 16.0, y: floor((height - 40.0) / 2.0)), size: CGSize(width: max(1.0, width - 16.0 * 2.0 - 32.0), height: 40.0))
        
        self.textNode.isUserInteractionEnabled = isEnabled
        self.textNode.alpha = isEnabled ? 1.0 : 0.6
        
        return height
    }
}

final class PeerInfoHeaderMultiLineTextFieldNode: ASDisplayNode, PeerInfoHeaderTextFieldNode, ASEditableTextNodeDelegate {
    private let textNode: EditableTextNode
    private let textNodeContainer: ASDisplayNode
    private let measureTextNode: ImmediateTextNode
    private let clearIconNode: ASImageNode
    private let clearButtonNode: HighlightableButtonNode
    private let topSeparator: ASDisplayNode
    
    private let requestUpdateHeight: () -> Void
    
    private var fontSize: PresentationFontSize?
    private var theme: PresentationTheme?
    private var currentParams: (width: CGFloat, safeInset: CGFloat)?
    private var currentMeasuredHeight: CGFloat?
    
    var text: String {
        return self.textNode.attributedText?.string ?? ""
    }
    
    init(requestUpdateHeight: @escaping () -> Void) {
        self.requestUpdateHeight = requestUpdateHeight
        
        self.textNode = EditableTextNode()
        self.textNode.clipsToBounds = false
        self.textNode.textView.clipsToBounds = false
        self.textNode.textContainerInset = UIEdgeInsets()
        
        self.textNodeContainer = ASDisplayNode()
        self.measureTextNode = ImmediateTextNode()
        self.measureTextNode.maximumNumberOfLines = 0
        self.topSeparator = ASDisplayNode()
        
        self.clearIconNode = ASImageNode()
        self.clearIconNode.isLayerBacked = true
        self.clearIconNode.displayWithoutProcessing = true
        self.clearIconNode.displaysAsynchronously = false
        self.clearIconNode.isHidden = true
        
        self.clearButtonNode = HighlightableButtonNode()
        self.clearButtonNode.isHidden = true
        
        super.init()
        
        self.textNodeContainer.addSubnode(self.textNode)
        self.addSubnode(self.textNodeContainer)
        self.addSubnode(self.clearIconNode)
        self.addSubnode(self.clearButtonNode)
        self.addSubnode(self.topSeparator)
    
        self.clearButtonNode.addTarget(self, action: #selector(self.clearButtonPressed), forControlEvents: .touchUpInside)
        self.clearButtonNode.highligthedChanged = { [weak self] highlighted in
            if let strongSelf = self {
                if highlighted {
                    strongSelf.clearIconNode.layer.removeAnimation(forKey: "opacity")
                    strongSelf.clearIconNode.alpha = 0.4
                } else {
                    strongSelf.clearIconNode.alpha = 1.0
                    strongSelf.clearIconNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
                }
            }
        }
    }
        
    @objc private func clearButtonPressed() {
        guard let theme = self.theme else {
            return
        }
        let font: UIFont
        if let fontSize = self.fontSize {
            font = Font.regular(fontSize.itemListBaseFontSize)
        } else {
            font = Font.regular(17.0)
        }
        let attributedText = NSAttributedString(string: "", font: font, textColor: theme.list.itemPrimaryTextColor)
        self.textNode.attributedText = attributedText
        self.requestUpdateHeight()
        self.updateClearButtonVisibility()
    }
    
    func update(width: CGFloat, safeInset: CGFloat, hasPrevious: Bool, placeholder: String, isEnabled: Bool, presentationData: PresentationData, updateText: String?) -> CGFloat {
        self.currentParams = (width, safeInset)
        
        self.fontSize = presentationData.listsFontSize
        let titleFont = Font.regular(presentationData.listsFontSize.itemListBaseFontSize)
        
        if self.theme !== presentationData.theme {
            self.theme = presentationData.theme
            let textColor = presentationData.theme.list.itemPrimaryTextColor
            
            self.textNode.typingAttributes = [NSAttributedString.Key.font.rawValue: titleFont, NSAttributedString.Key.foregroundColor.rawValue: textColor]
            
            self.textNode.clipsToBounds = true
            self.textNode.delegate = self
            self.textNode.hitTestSlop = UIEdgeInsets(top: -5.0, left: -5.0, bottom: -5.0, right: -5.0)
            
            self.clearIconNode.image = PresentationResourcesItemList.itemListClearInputIcon(presentationData.theme)
        }
        
        self.topSeparator.backgroundColor = presentationData.theme.list.itemBlocksSeparatorColor
        self.topSeparator.frame = CGRect(origin: CGPoint(x: safeInset + (hasPrevious ? 16.0 : 0.0), y: 0.0), size: CGSize(width: width, height: UIScreenPixel))
        
        let attributedPlaceholderText = NSAttributedString(string: placeholder, font: titleFont, textColor: presentationData.theme.list.itemPlaceholderTextColor)
        if self.textNode.attributedPlaceholderText == nil || !self.textNode.attributedPlaceholderText!.isEqual(to: attributedPlaceholderText) {
            self.textNode.attributedPlaceholderText = attributedPlaceholderText
        }
        
        if let updateText = updateText {
            let attributedText = NSAttributedString(string: updateText, font: titleFont, textColor: presentationData.theme.list.itemPrimaryTextColor)
            self.textNode.attributedText = attributedText
        }
        
        var measureText = self.textNode.attributedText?.string ?? ""
        if measureText.hasSuffix("\n") || measureText.isEmpty {
           measureText += "|"
        }
        let attributedMeasureText = NSAttributedString(string: measureText, font: titleFont, textColor: .black)
        self.measureTextNode.attributedText = attributedMeasureText
        let measureTextSize = self.measureTextNode.updateLayout(CGSize(width: width - safeInset * 2.0 - 16.0 * 2.0 - 38.0, height: .greatestFiniteMagnitude))
        self.currentMeasuredHeight = measureTextSize.height
        
        let height = measureTextSize.height + 22.0
        
        let buttonSize = CGSize(width: 38.0, height: height)
        self.clearButtonNode.frame = CGRect(origin: CGPoint(x: width - safeInset - buttonSize.width, y: 0.0), size: buttonSize)
        if let image = self.clearIconNode.image {
            self.clearIconNode.frame = CGRect(origin: CGPoint(x: width - safeInset - buttonSize.width + floor((buttonSize.width - image.size.width) / 2.0), y: floor((height - image.size.height) / 2.0)), size: image.size)
        }
        
        let textNodeFrame = CGRect(origin: CGPoint(x: safeInset + 16.0, y: 10.0), size: CGSize(width: width - safeInset * 2.0 - 16.0 * 2.0 - 38.0, height: max(height, 1000.0)))
        self.textNodeContainer.frame = textNodeFrame
        self.textNode.frame = CGRect(origin: CGPoint(), size: textNodeFrame.size)
        
        return height
    }
    
    func editableTextNodeDidBeginEditing(_ editableTextNode: ASEditableTextNode) {
        self.updateClearButtonVisibility()
    }
    
    func editableTextNodeDidFinishEditing(_ editableTextNode: ASEditableTextNode) {
        self.updateClearButtonVisibility()
    }
    
    private func updateClearButtonVisibility() {
        let isHidden = !self.textNode.isFirstResponder() || self.text.isEmpty
        self.clearIconNode.isHidden = isHidden
        self.clearButtonNode.isHidden = isHidden
        self.clearButtonNode.isAccessibilityElement = isHidden
    }
    
    func editableTextNode(_ editableTextNode: ASEditableTextNode, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
        guard let theme = self.theme else {
            return true
        }
        let updatedText = (editableTextNode.textView.text as NSString).replacingCharacters(in: range, with: text)
        if updatedText.count > 255 {
            let attributedText = NSAttributedString(string: String(updatedText[updatedText.startIndex..<updatedText.index(updatedText.startIndex, offsetBy: 255)]), font: Font.regular(17.0), textColor: theme.list.itemPrimaryTextColor)
            self.textNode.attributedText = attributedText
            self.requestUpdateHeight()
            
            return false
        } else {
            return true
        }
    }
    
    func editableTextNodeDidUpdateText(_ editableTextNode: ASEditableTextNode) {
        if let (width, safeInset) = self.currentParams {
            var measureText = self.textNode.attributedText?.string ?? ""
            if measureText.hasSuffix("\n") || measureText.isEmpty {
               measureText += "|"
            }
            let attributedMeasureText = NSAttributedString(string: measureText, font: Font.regular(17.0), textColor: .black)
            self.measureTextNode.attributedText = attributedMeasureText
            let measureTextSize = self.measureTextNode.updateLayout(CGSize(width: width - safeInset * 2.0 - 16.0 * 2.0 - 38.0, height: .greatestFiniteMagnitude))
            if let currentMeasuredHeight = self.currentMeasuredHeight, abs(measureTextSize.height - currentMeasuredHeight) > 0.1 {
                self.requestUpdateHeight()
            }
        }
    }
    
    func editableTextNodeShouldPaste(_ editableTextNode: ASEditableTextNode) -> Bool {
        let text: String? = UIPasteboard.general.string
        if let _ = text {
            return true
        } else {
            return false
        }
    }
}

final class PeerInfoHeaderEditingContentNode: ASDisplayNode {
    private let context: AccountContext
    private let requestUpdateLayout: () -> Void
    
    var requestEditing: (() -> Void)?
    
    let avatarNode: PeerInfoEditingAvatarNode
    let avatarTextNode: ImmediateTextNode
    let avatarButtonNode: HighlightableButtonNode
    
    var itemNodes: [PeerInfoHeaderTextFieldNodeKey: PeerInfoHeaderTextFieldNode] = [:]
    
    init(context: AccountContext, requestUpdateLayout: @escaping () -> Void) {
        self.context = context
        self.requestUpdateLayout = requestUpdateLayout
        
        self.avatarNode = PeerInfoEditingAvatarNode(context: context)
        
        self.avatarTextNode = ImmediateTextNode()
        self.avatarButtonNode = HighlightableButtonNode()
        
        super.init()
        
        self.addSubnode(self.avatarNode)
        self.avatarButtonNode.addSubnode(self.avatarTextNode)
        
        self.avatarButtonNode.addTarget(self, action: #selector(textPressed), forControlEvents: .touchUpInside)
    }
    
    @objc private func textPressed() {
        self.requestEditing?()
    }
    
    func editingTextForKey(_ key: PeerInfoHeaderTextFieldNodeKey) -> String? {
        return self.itemNodes[key]?.text
    }
    
    func shakeTextForKey(_ key: PeerInfoHeaderTextFieldNodeKey) {
        self.itemNodes[key]?.layer.addShakeAnimation()
    }
    
    func update(width: CGFloat, safeInset: CGFloat, statusBarHeight: CGFloat, navigationHeight: CGFloat, isModalOverlay: Bool, peer: Peer?, cachedData: CachedPeerData?, isContact: Bool, isSettings: Bool, presentationData: PresentationData, transition: ContainedViewLayoutTransition) -> CGFloat {
        let avatarSize: CGFloat = isModalOverlay ? 200.0 : 100.0
        let avatarFrame = CGRect(origin: CGPoint(x: floor((width - avatarSize) / 2.0), y: statusBarHeight + 10.0), size: CGSize(width: avatarSize, height: avatarSize))
        transition.updateFrameAdditiveToCenter(node: self.avatarNode, frame: CGRect(origin: avatarFrame.center, size: CGSize()))
        
        var contentHeight: CGFloat = statusBarHeight + 10.0 + avatarSize + 20.0
        
        if canEditPeerInfo(context: self.context, peer: peer)  {
            if self.avatarButtonNode.supernode == nil {
                self.addSubnode(self.avatarButtonNode)
            }
            self.avatarTextNode.attributedText = NSAttributedString(string: presentationData.strings.Settings_SetNewProfilePhotoOrVideo, font: Font.regular(17.0), textColor: presentationData.theme.list.itemAccentColor)
            
            let avatarTextSize = self.avatarTextNode.updateLayout(CGSize(width: width, height: 32.0))
            transition.updateFrame(node: self.avatarTextNode, frame: CGRect(origin: CGPoint(), size: avatarTextSize))
            transition.updateFrame(node: self.avatarButtonNode, frame: CGRect(origin: CGPoint(x: floorToScreenPixels((width - avatarTextSize.width) / 2.0), y: contentHeight - 1.0), size: avatarTextSize))
            contentHeight += 32.0
        }
        
        var fieldKeys: [PeerInfoHeaderTextFieldNodeKey] = []
        if let user = peer as? TelegramUser {
            if !user.isDeleted {
                fieldKeys.append(.firstName)
                if user.botInfo == nil {
                    fieldKeys.append(.lastName)
                }
            }
        } else if let _ = peer as? TelegramGroup {
            fieldKeys.append(.title)
            if canEditPeerInfo(context: self.context, peer: peer) {
                fieldKeys.append(.description)
            }
        } else if let _ = peer as? TelegramChannel {
            fieldKeys.append(.title)
            if canEditPeerInfo(context: self.context, peer: peer) {
                fieldKeys.append(.description)
            }
        }
        var hasPrevious = false
        for key in fieldKeys {
            let itemNode: PeerInfoHeaderTextFieldNode
            var updateText: String?
            if let current = self.itemNodes[key] {
                itemNode = current
            } else {
                var isMultiline = false
                switch key {
                case .firstName:
                    updateText = (peer as? TelegramUser)?.firstName ?? ""
                case .lastName:
                    updateText = (peer as? TelegramUser)?.lastName ?? ""
                case .title:
                    updateText = peer?.debugDisplayTitle ?? ""
                case .description:
                    isMultiline = true
                    if let cachedData = cachedData as? CachedChannelData {
                        updateText = cachedData.about ?? ""
                    } else if let cachedData = cachedData as? CachedGroupData {
                        updateText = cachedData.about ?? ""
                    } else {
                        updateText = ""
                    }
                }
                if isMultiline {
                    itemNode = PeerInfoHeaderMultiLineTextFieldNode(requestUpdateHeight: { [weak self] in
                        self?.requestUpdateLayout()
                    })
                } else {
                    itemNode = PeerInfoHeaderSingleLineTextFieldNode()
                }
                self.itemNodes[key] = itemNode
                self.addSubnode(itemNode)
            }
            let placeholder: String
            var isEnabled = true
            switch key {
            case .firstName:
                placeholder = presentationData.strings.UserInfo_FirstNamePlaceholder
                isEnabled = isContact || isSettings
            case .lastName:
                placeholder = presentationData.strings.UserInfo_LastNamePlaceholder
                isEnabled = isContact || isSettings
            case .title:
                if let channel = peer as? TelegramChannel, case .broadcast = channel.info {
                    placeholder = presentationData.strings.GroupInfo_ChannelListNamePlaceholder
                } else {
                    placeholder = presentationData.strings.GroupInfo_GroupNamePlaceholder
                }
                isEnabled = canEditPeerInfo(context: self.context, peer: peer)
            case .description:
                placeholder = presentationData.strings.Channel_Edit_AboutItem
                isEnabled = canEditPeerInfo(context: self.context, peer: peer)
            }
            let itemHeight = itemNode.update(width: width, safeInset: safeInset, hasPrevious: hasPrevious, placeholder: placeholder, isEnabled: isEnabled, presentationData: presentationData, updateText: updateText)
            transition.updateFrame(node: itemNode, frame: CGRect(origin: CGPoint(x: 0.0, y: contentHeight), size: CGSize(width: width, height: itemHeight)))
            contentHeight += itemHeight
            hasPrevious = true
        }
        var removeKeys: [PeerInfoHeaderTextFieldNodeKey] = []
        for (key, _) in self.itemNodes {
            if !fieldKeys.contains(key) {
                removeKeys.append(key)
            }
        }
        for key in removeKeys {
            if let itemNode = self.itemNodes.removeValue(forKey: key) {
                itemNode.removeFromSupernode()
            }
        }
        
        return contentHeight
    }
}

private let TitleNodeStateRegular = 0
private let TitleNodeStateExpanded = 1

final class PeerInfoHeaderNode: ASDisplayNode {
    private var context: AccountContext
    private var presentationData: PresentationData?
    private var state: PeerInfoState?
    private var peer: Peer?
    private var avatarSize: CGFloat?
    
    private let isOpenedFromChat: Bool
    private let isSettings: Bool
    private let videoCallsEnabled: Bool
    
    private(set) var isAvatarExpanded: Bool
    private(set) var twoLineInfo = false
    var skipCollapseCompletion = false
    var ignoreCollapse = false
    
    let avatarListNode: PeerInfoAvatarListNode
    
    let regularContentNode: PeerInfoHeaderRegularContentNode
    let editingContentNode: PeerInfoHeaderEditingContentNode
    let avatarOverlayNode: PeerInfoEditingAvatarOverlayNode
    let titleNodeContainer: ASDisplayNode
    let titleNodeRawContainer: ASDisplayNode
    let titleNode: MultiScaleTextNode
    let titleCredibilityIconNode: ASImageNode
    let titleExpandedCredibilityIconNode: ASImageNode
    let subtitleNodeContainer: ASDisplayNode
    let subtitleNodeRawContainer: ASDisplayNode
    let subtitleNode: MultiScaleTextNode
    let usernameNodeContainer: ASDisplayNode
    let usernameNodeRawContainer: ASDisplayNode
    let usernameNode: MultiScaleTextNode
    private var buttonNodes: [PeerInfoHeaderButtonKey: PeerInfoHeaderButtonNode] = [:]
    private let backgroundNode: ASDisplayNode
    private let expandedBackgroundNode: ASDisplayNode
    let separatorNode: ASDisplayNode
    let navigationBackgroundNode: ASDisplayNode
    var navigationTitle: String?
    let navigationTitleNode: ImmediateTextNode
    let navigationSeparatorNode: ASDisplayNode
    let navigationButtonContainer: PeerInfoHeaderNavigationButtonContainerNode
    
    var performButtonAction: ((PeerInfoHeaderButtonKey) -> Void)?
    var requestAvatarExpansion: ((Bool, [AvatarGalleryEntry], AvatarGalleryEntry?, (ASDisplayNode, CGRect, () -> (UIView?, UIView?))?) -> Void)?
    var requestOpenAvatarForEditing: ((Bool) -> Void)?
    var cancelUpload: (() -> Void)?
    var requestUpdateLayout: (() -> Void)?
    
    var displayCopyContextMenu: ((ASDisplayNode, Bool, Bool) -> Void)?
    
    var navigationTransition: PeerInfoHeaderNavigationTransition?
    
    init(context: AccountContext, avatarInitiallyExpanded: Bool, isOpenedFromChat: Bool, isSettings: Bool) {
        self.context = context
        self.isAvatarExpanded = avatarInitiallyExpanded
        self.isOpenedFromChat = isOpenedFromChat
        self.isSettings = isSettings
        self.videoCallsEnabled = VideoCallsConfiguration(appConfiguration: context.currentAppConfiguration.with { $0 }).areVideoCallsEnabled
        
        self.avatarListNode = PeerInfoAvatarListNode(context: context, readyWhenGalleryLoads: avatarInitiallyExpanded)
        
        self.titleNodeContainer = ASDisplayNode()
        self.titleNodeRawContainer = ASDisplayNode()
        self.titleNode = MultiScaleTextNode(stateKeys: [TitleNodeStateRegular, TitleNodeStateExpanded])
        self.titleNode.displaysAsynchronously = false
        
        self.titleCredibilityIconNode = ASImageNode()
        self.titleCredibilityIconNode.displaysAsynchronously = false
        self.titleCredibilityIconNode.displayWithoutProcessing = true
        self.titleNode.stateNode(forKey: TitleNodeStateRegular)?.addSubnode(self.titleCredibilityIconNode)
        
        self.titleExpandedCredibilityIconNode = ASImageNode()
        self.titleExpandedCredibilityIconNode.displaysAsynchronously = false
        self.titleExpandedCredibilityIconNode.displayWithoutProcessing = true
        self.titleNode.stateNode(forKey: TitleNodeStateExpanded)?.addSubnode(self.titleExpandedCredibilityIconNode)
        
        self.subtitleNodeContainer = ASDisplayNode()
        self.subtitleNodeRawContainer = ASDisplayNode()
        self.subtitleNode = MultiScaleTextNode(stateKeys: [TitleNodeStateRegular, TitleNodeStateExpanded])
        self.subtitleNode.displaysAsynchronously = false
        
        self.usernameNodeContainer = ASDisplayNode()
        self.usernameNodeRawContainer = ASDisplayNode()
        self.usernameNode = MultiScaleTextNode(stateKeys: [TitleNodeStateRegular, TitleNodeStateExpanded])
        self.usernameNode.displaysAsynchronously = false
        
        self.regularContentNode = PeerInfoHeaderRegularContentNode()
        var requestUpdateLayoutImpl: (() -> Void)?
        self.editingContentNode = PeerInfoHeaderEditingContentNode(context: context, requestUpdateLayout: {
            requestUpdateLayoutImpl?()
        })
        self.editingContentNode.alpha = 0.0
        
        self.avatarOverlayNode = PeerInfoEditingAvatarOverlayNode(context: context)
        self.avatarOverlayNode.isUserInteractionEnabled = false
        
        self.navigationBackgroundNode = ASDisplayNode()
        self.navigationBackgroundNode.isUserInteractionEnabled = false
        
        self.navigationTitleNode = ImmediateTextNode()
        
        self.navigationSeparatorNode = ASDisplayNode()
        
        self.navigationButtonContainer = PeerInfoHeaderNavigationButtonContainerNode()
        
        self.backgroundNode = ASDisplayNode()
        self.backgroundNode.isLayerBacked = true
        self.expandedBackgroundNode = ASDisplayNode()
        self.expandedBackgroundNode.isLayerBacked = true
        
        self.separatorNode = ASDisplayNode()
        self.separatorNode.isLayerBacked = true
        
        super.init()
        
        requestUpdateLayoutImpl = { [weak self] in
            self?.requestUpdateLayout?()
        }
        
        self.addSubnode(self.backgroundNode)
        self.addSubnode(self.expandedBackgroundNode)
        self.titleNodeContainer.addSubnode(self.titleNode)
        self.regularContentNode.addSubnode(self.titleNodeContainer)
        self.subtitleNodeContainer.addSubnode(self.subtitleNode)
        self.regularContentNode.addSubnode(self.subtitleNodeContainer)
        self.regularContentNode.addSubnode(self.subtitleNodeRawContainer)
        self.usernameNodeContainer.addSubnode(self.usernameNode)
        self.regularContentNode.addSubnode(self.usernameNodeContainer)
        self.regularContentNode.addSubnode(self.usernameNodeRawContainer)
        self.regularContentNode.addSubnode(self.avatarListNode)
        self.regularContentNode.addSubnode(self.avatarListNode.listContainerNode.controlsClippingOffsetNode)
        self.addSubnode(self.regularContentNode)
        self.addSubnode(self.editingContentNode)
        self.addSubnode(self.avatarOverlayNode)
        self.addSubnode(self.navigationBackgroundNode)
        self.navigationBackgroundNode.addSubnode(self.navigationTitleNode)
        self.navigationBackgroundNode.addSubnode(self.navigationSeparatorNode)
        self.addSubnode(self.navigationButtonContainer)
        self.addSubnode(self.separatorNode)
        
        self.avatarListNode.avatarContainerNode.tapped = { [weak self] in
            self?.initiateAvatarExpansion(gallery: false, first: false)
        }
        self.editingContentNode.avatarNode.tapped = { [weak self] confirm in
            self?.initiateAvatarExpansion(gallery: true, first: true)
        }
        self.editingContentNode.requestEditing = { [weak self] in
            self?.requestOpenAvatarForEditing?(true)
        }
        
        self.avatarListNode.itemsUpdated = { [weak self] items in
            guard let strongSelf = self, let state = strongSelf.state, let peer = strongSelf.peer, let presentationData = strongSelf.presentationData, let avatarSize = strongSelf.avatarSize else {
                return
            }
            strongSelf.editingContentNode.avatarNode.update(peer: peer, item: strongSelf.avatarListNode.item, updatingAvatar: state.updatingAvatar, uploadProgress: state.avatarUploadProgress, theme: presentationData.theme, avatarSize: avatarSize, isEditing: state.isEditing)
        }
    }
    
    override func didLoad() {
        super.didLoad()
        
        let usernameGestureRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(self.handleUsernameLongPress(_:)))
        self.usernameNodeRawContainer.view.addGestureRecognizer(usernameGestureRecognizer)
        
        let phoneGestureRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(self.handlePhoneLongPress(_:)))
        self.subtitleNodeRawContainer.view.addGestureRecognizer(phoneGestureRecognizer)
    }
    
    @objc private func handleUsernameLongPress(_ gestureRecognizer: UILongPressGestureRecognizer) {
        if gestureRecognizer.state == .began {
            self.displayCopyContextMenu?(self.usernameNodeRawContainer, !self.isAvatarExpanded, true)
        }
    }
    
    @objc private func handlePhoneLongPress(_ gestureRecognizer: UILongPressGestureRecognizer) {
        if gestureRecognizer.state == .began {
            self.displayCopyContextMenu?(self.subtitleNodeRawContainer, true, !self.isAvatarExpanded)
        }
    }
    
    func initiateAvatarExpansion(gallery: Bool, first: Bool) {
        if let peer = self.peer, peer.profileImageRepresentations.isEmpty && gallery {
            self.requestOpenAvatarForEditing?(false)
            return
        }
        if self.isAvatarExpanded || gallery {
            if let currentEntry = self.avatarListNode.listContainerNode.currentEntry, let firstEntry = self.avatarListNode.listContainerNode.galleryEntries.first {
                let entry = first ? firstEntry : currentEntry
                self.requestAvatarExpansion?(true, self.avatarListNode.listContainerNode.galleryEntries, entry, self.avatarTransitionArguments(entry: currentEntry))
            }
        } else if let entry = self.avatarListNode.listContainerNode.galleryEntries.first {
            let _ = self.avatarListNode.avatarContainerNode.avatarNode
            self.requestAvatarExpansion?(false, self.avatarListNode.listContainerNode.galleryEntries, nil, self.avatarTransitionArguments(entry: entry))
        } else {
            self.cancelUpload?()
        }
    }
    
    func avatarTransitionArguments(entry: AvatarGalleryEntry) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
        if self.isAvatarExpanded {
            if let avatarNode = self.avatarListNode.listContainerNode.currentItemNode?.imageNode {
                return (avatarNode, avatarNode.bounds, { [weak avatarNode] in
                    return (avatarNode?.view.snapshotContentTree(unhide: true), nil)
                })
            } else {
                return nil
            }
        } else if entry == self.avatarListNode.listContainerNode.galleryEntries.first {
            let avatarNode = self.avatarListNode.avatarContainerNode.avatarNode
            return (avatarNode, avatarNode.bounds, { [weak avatarNode] in
                return (avatarNode?.view.snapshotContentTree(unhide: true), nil)
            })
        } else {
            return nil
        }
    }
    
    func addToAvatarTransitionSurface(view: UIView) {
        if self.isAvatarExpanded {
            self.avatarListNode.listContainerNode.view.addSubview(view)
        } else {
            self.view.addSubview(view)
        }
    }
    
    func updateAvatarIsHidden(entry: AvatarGalleryEntry?) {
        if let entry = entry {
            self.avatarListNode.avatarContainerNode.avatarNode.isHidden = entry == self.avatarListNode.listContainerNode.galleryEntries.first
            self.editingContentNode.avatarNode.isHidden = entry == self.avatarListNode.listContainerNode.galleryEntries.first
        } else {
            self.avatarListNode.avatarContainerNode.avatarNode.isHidden = false
            self.editingContentNode.avatarNode.isHidden = false
        }
        self.avatarListNode.listContainerNode.updateEntryIsHidden(entry: entry)
    }
    
    func update(width: CGFloat, containerHeight: CGFloat, containerInset: CGFloat, statusBarHeight: CGFloat, navigationHeight: CGFloat, isModalOverlay: Bool, isMediaOnly: Bool, contentOffset: CGFloat, presentationData: PresentationData, peer: Peer?, cachedData: CachedPeerData?, notificationSettings: TelegramPeerNotificationSettings?, statusData: PeerInfoStatusData?, isContact: Bool, isSettings: Bool, state: PeerInfoState, transition: ContainedViewLayoutTransition, additive: Bool) -> CGFloat {
        self.state = state
        self.peer = peer
        self.avatarListNode.listContainerNode.peer = peer
        
        let avatarSize: CGFloat = isModalOverlay ? 200.0 : 100.0
        self.avatarSize = avatarSize
        
        var contentOffset = contentOffset
        
        if isMediaOnly {
            if isModalOverlay {
                contentOffset = 312.0
            } else {
                contentOffset = 212.0
            }
        }
        
        let themeUpdated = self.presentationData?.theme !== presentationData.theme
        self.presentationData = presentationData
        
        if themeUpdated {
            if let sourceImage = UIImage(bundleImageName: "Peer Info/VerifiedIcon") {
                let image = generateImage(sourceImage.size, contextGenerator: { size, context in
                    context.clear(CGRect(origin: CGPoint(), size: size))
                    context.setFillColor(presentationData.theme.list.itemCheckColors.foregroundColor.cgColor)
                    context.fillEllipse(in: CGRect(origin: CGPoint(), size: size).insetBy(dx: 7.0, dy: 7.0))
                    context.setFillColor(presentationData.theme.list.itemCheckColors.fillColor.cgColor)
                    context.clip(to: CGRect(origin: CGPoint(), size: size), mask: sourceImage.cgImage!)
                    context.fill(CGRect(origin: CGPoint(), size: size))
                })
                self.titleCredibilityIconNode.image = image
                self.titleExpandedCredibilityIconNode.image = image
            }
        }
        
        self.regularContentNode.alpha = state.isEditing ? 0.0 : 1.0
        self.editingContentNode.alpha = state.isEditing ? 1.0 : 0.0
        
        let editingContentHeight = self.editingContentNode.update(width: width, safeInset: containerInset, statusBarHeight: statusBarHeight, navigationHeight: navigationHeight, isModalOverlay: isModalOverlay, peer: state.isEditing ? peer : nil, cachedData: cachedData, isContact: isContact, isSettings: isSettings, presentationData: presentationData, transition: transition)
        transition.updateFrame(node: self.editingContentNode, frame: CGRect(origin: CGPoint(x: 0.0, y: -contentOffset), size: CGSize(width: width, height: editingContentHeight)))
        
        let avatarOverlayFarme = self.editingContentNode.convert(self.editingContentNode.avatarNode.frame, to: self)
        transition.updateFrame(node: self.avatarOverlayNode, frame: avatarOverlayFarme)
        
        var transitionSourceHeight: CGFloat = 0.0
        var transitionFraction: CGFloat = 0.0
        var transitionSourceAvatarFrame = CGRect()
        var transitionSourceTitleFrame = CGRect()
        var transitionSourceSubtitleFrame = CGRect()
        
        self.backgroundNode.backgroundColor = presentationData.theme.list.itemBlocksBackgroundColor
        self.expandedBackgroundNode.backgroundColor = presentationData.theme.rootController.navigationBar.backgroundColor
        
        if let navigationTransition = self.navigationTransition, let sourceAvatarNode = (navigationTransition.sourceNavigationBar.rightButtonNode.singleCustomNode as? ChatAvatarNavigationNode)?.avatarNode {
            transitionSourceHeight = navigationTransition.sourceNavigationBar.bounds.height
            transitionFraction = navigationTransition.fraction
            transitionSourceAvatarFrame = sourceAvatarNode.view.convert(sourceAvatarNode.view.bounds, to: navigationTransition.sourceNavigationBar.view)
            transitionSourceTitleFrame = navigationTransition.sourceTitleFrame
            transitionSourceSubtitleFrame = navigationTransition.sourceSubtitleFrame
            
            transition.updateAlpha(node: self.expandedBackgroundNode, alpha: transitionFraction)
            
            if self.isAvatarExpanded, case .animated = transition, transitionFraction == 1.0 {
                self.avatarListNode.animateAvatarCollapse(transition: transition)
            }
        } else {
            let backgroundTransitionFraction: CGFloat = max(0.0, min(1.0, contentOffset / (112.0 + avatarSize)))
            transition.updateAlpha(node: self.expandedBackgroundNode, alpha: backgroundTransitionFraction)
        }
        
        self.avatarListNode.avatarContainerNode.updateTransitionFraction(transitionFraction, transition: transition)
        self.avatarListNode.listContainerNode.currentItemNode?.updateTransitionFraction(transitionFraction, transition: transition)
        self.avatarOverlayNode.updateTransitionFraction(transitionFraction, transition: transition)
        
        if self.navigationTitle != presentationData.strings.EditProfile_Title || themeUpdated {
            self.navigationTitleNode.attributedText = NSAttributedString(string: presentationData.strings.EditProfile_Title, font: Font.bold(17.0), textColor: presentationData.theme.rootController.navigationBar.primaryTextColor)
        }
        
        let navigationTitleSize = self.navigationTitleNode.updateLayout(CGSize(width: width, height: navigationHeight))
        self.navigationTitleNode.frame = CGRect(origin: CGPoint(x: floorToScreenPixels((width - navigationTitleSize.width) / 2.0), y: navigationHeight - 44.0 + floorToScreenPixels((44.0 - navigationTitleSize.height) / 2.0)), size: navigationTitleSize)
        
        self.navigationBackgroundNode.frame = CGRect(origin: CGPoint(), size: CGSize(width: width, height: navigationHeight))
        self.navigationSeparatorNode.frame = CGRect(origin: CGPoint(x: 0.0, y: navigationHeight), size: CGSize(width: width, height: UIScreenPixel))
        self.navigationBackgroundNode.backgroundColor = presentationData.theme.rootController.navigationBar.backgroundColor
        self.navigationSeparatorNode.backgroundColor = presentationData.theme.rootController.navigationBar.separatorColor
        transition.updateAlpha(node: self.navigationBackgroundNode, alpha: state.isEditing && self.isSettings ? min(1.0, contentOffset / (navigationHeight * 0.5)) : 0.0)
        self.separatorNode.backgroundColor = presentationData.theme.list.itemBlocksSeparatorColor
        
        let defaultButtonSize: CGFloat = 40.0
        let expandedAvatarControlsHeight: CGFloat = 61.0
        let expandedAvatarListHeight = min(width, containerHeight - expandedAvatarControlsHeight)
        let expandedAvatarListSize = CGSize(width: width, height: expandedAvatarListHeight)
        
        let buttonKeys: [PeerInfoHeaderButtonKey] = self.isSettings ? [] : peerInfoHeaderButtons(peer: peer, cachedData: cachedData, isOpenedFromChat: self.isOpenedFromChat, videoCallsEnabled: self.videoCallsEnabled)
        
        var isVerified = false
        let titleString: NSAttributedString
        let subtitleString: NSAttributedString
        let usernameString: NSAttributedString
        if let peer = peer, peer.isVerified {
            isVerified = true
        }
        
        if let peer = peer {
            if peer.id == self.context.account.peerId && !self.isSettings {
                titleString = NSAttributedString(string: presentationData.strings.Conversation_SavedMessages, font: Font.medium(24.0), textColor: presentationData.theme.list.itemPrimaryTextColor)
            } else if peer.id == self.context.account.peerId && !self.isSettings {
                titleString = NSAttributedString(string: presentationData.strings.DialogList_Replies, font: Font.medium(24.0), textColor: presentationData.theme.list.itemPrimaryTextColor)
            } else {
                titleString = NSAttributedString(string: peer.displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder), font: Font.medium(24.0), textColor: presentationData.theme.list.itemPrimaryTextColor)
            }
            
            if self.isSettings, let user = peer as? TelegramUser {
                let formattedPhone = formatPhoneNumber(user.phone ?? "")
                subtitleString = NSAttributedString(string: formattedPhone, font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
                
                var username = ""
                if let addressName = user.addressName, !addressName.isEmpty {
                    username = "@\(addressName)"
                }
                usernameString = NSAttributedString(string: username, font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
            } else if let statusData = statusData {
                let subtitleColor: UIColor
                if statusData.isActivity {
                    subtitleColor = presentationData.theme.list.itemAccentColor
                } else {
                    subtitleColor = presentationData.theme.list.itemSecondaryTextColor
                }
                subtitleString = NSAttributedString(string: statusData.text, font: Font.regular(15.0), textColor: subtitleColor)
                usernameString = NSAttributedString(string: "", font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
            } else {
                subtitleString = NSAttributedString(string: " ", font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
                usernameString = NSAttributedString(string: "", font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
            }
        } else {
            titleString = NSAttributedString(string: " ", font: Font.medium(24.0), textColor: presentationData.theme.list.itemPrimaryTextColor)
            subtitleString = NSAttributedString(string: " ", font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
            usernameString = NSAttributedString(string: "", font: Font.regular(15.0), textColor: presentationData.theme.list.itemSecondaryTextColor)
        }
        
        let textSideInset: CGFloat = 44.0
        let expandedAvatarHeight: CGFloat = expandedAvatarListSize.height + expandedAvatarControlsHeight
        
        let titleConstrainedSize = CGSize(width: width - textSideInset * 2.0 - (isVerified ? 16.0 : 0.0), height: .greatestFiniteMagnitude)
        
        let titleNodeLayout = self.titleNode.updateLayout(states: [
            TitleNodeStateRegular: MultiScaleTextState(attributedText: titleString, constrainedSize: titleConstrainedSize),
            TitleNodeStateExpanded: MultiScaleTextState(attributedText: titleString, constrainedSize: CGSize(width: titleConstrainedSize.width, height: titleConstrainedSize.height))
        ], mainState: TitleNodeStateRegular)
        
        let subtitleNodeLayout = self.subtitleNode.updateLayout(states: [
            TitleNodeStateRegular: MultiScaleTextState(attributedText: subtitleString, constrainedSize: titleConstrainedSize),
            TitleNodeStateExpanded: MultiScaleTextState(attributedText: subtitleString, constrainedSize: CGSize(width: titleConstrainedSize.width - 82.0, height: titleConstrainedSize.height))
        ], mainState: TitleNodeStateRegular)
        
        let usernameNodeLayout = self.usernameNode.updateLayout(states: [
            TitleNodeStateRegular: MultiScaleTextState(attributedText: usernameString, constrainedSize: CGSize(width: titleConstrainedSize.width, height: titleConstrainedSize.height)),
            TitleNodeStateExpanded: MultiScaleTextState(attributedText: usernameString, constrainedSize: CGSize(width: width - titleNodeLayout[TitleNodeStateExpanded]!.size.width - 8.0, height: titleConstrainedSize.height))
        ], mainState: TitleNodeStateRegular)
                
        let avatarFrame = CGRect(origin: CGPoint(x: floor((width - avatarSize) / 2.0), y: statusBarHeight + 10.0), size: CGSize(width: avatarSize, height: avatarSize))
        let avatarCenter = CGPoint(x: (1.0 - transitionFraction) * avatarFrame.midX + transitionFraction * transitionSourceAvatarFrame.midX, y: (1.0 - transitionFraction) * avatarFrame.midY + transitionFraction * transitionSourceAvatarFrame.midY)
        
        let titleSize = titleNodeLayout[TitleNodeStateRegular]!.size
        let titleExpandedSize = titleNodeLayout[TitleNodeStateExpanded]!.size
        let subtitleSize = subtitleNodeLayout[TitleNodeStateRegular]!.size
        let usernameSize = usernameNodeLayout[TitleNodeStateRegular]!.size
        
        if let image = self.titleCredibilityIconNode.image {
            transition.updateFrame(node: self.titleCredibilityIconNode, frame: CGRect(origin: CGPoint(x: titleSize.width + 4.0, y: floor((titleSize.height - image.size.height) / 2.0) + 1.0), size: image.size))
            self.titleCredibilityIconNode.isHidden = !isVerified
            
            transition.updateFrame(node: self.titleExpandedCredibilityIconNode, frame: CGRect(origin: CGPoint(x: titleExpandedSize.width + 4.0, y: floor((titleExpandedSize.height - image.size.height) / 2.0) + 1.0), size: image.size))
            self.titleExpandedCredibilityIconNode.isHidden = !isVerified
        }
        
        let titleFrame: CGRect
        let subtitleFrame: CGRect
        let usernameFrame: CGRect
        let usernameSpacing: CGFloat = 4.0
        var twoLineInfo = false
        if self.isAvatarExpanded {
            let minTitleSize = CGSize(width: titleSize.width * 0.7, height: titleSize.height * 0.7)
            let minTitleFrame = CGRect(origin: CGPoint(x: 16.0, y: expandedAvatarHeight - expandedAvatarControlsHeight + 9.0 + (subtitleSize.height.isZero ? 10.0 : 0.0)), size: minTitleSize)
            titleFrame = CGRect(origin: CGPoint(x: minTitleFrame.midX - titleSize.width / 2.0, y: minTitleFrame.midY - titleSize.height / 2.0), size: titleSize)
            subtitleFrame = CGRect(origin: CGPoint(x: 16.0, y: minTitleFrame.maxY + 4.0), size: subtitleSize)
            usernameFrame = CGRect(origin: CGPoint(x: width - usernameSize.width - 16.0, y: minTitleFrame.midY - usernameSize.height / 2.0), size: usernameSize)
        } else {
            titleFrame = CGRect(origin: CGPoint(x: floor((width - titleSize.width) / 2.0), y: avatarFrame.maxY + 10.0 + (subtitleSize.height.isZero ? 11.0 : 0.0)), size: titleSize)
            
            let totalSubtitleWidth = subtitleSize.width + usernameSpacing + usernameSize.width
            twoLineInfo = true
            if usernameSize.width == 0.0 || twoLineInfo {
                subtitleFrame = CGRect(origin: CGPoint(x: floor((width - subtitleSize.width) / 2.0), y: titleFrame.maxY + 1.0), size: subtitleSize)
                usernameFrame = CGRect(origin: CGPoint(x: floor((width - usernameSize.width) / 2.0), y: subtitleFrame.maxY + 1.0), size: usernameSize)
                
            } else {
                subtitleFrame = CGRect(origin: CGPoint(x: floor((width - totalSubtitleWidth) / 2.0), y: titleFrame.maxY + 1.0), size: subtitleSize)
                usernameFrame = CGRect(origin: CGPoint(x: subtitleFrame.maxX + usernameSpacing, y: titleFrame.maxY + 1.0), size: usernameSize)
            }
        }
        self.twoLineInfo = twoLineInfo
        
        let singleTitleLockOffset: CGFloat = (peer?.id == self.context.account.peerId || subtitleSize.height.isZero) ? 8.0 : 0.0
        
        let titleLockOffset: CGFloat = 7.0 + singleTitleLockOffset
        let titleMaxLockOffset: CGFloat = 7.0
        let titleCollapseOffset = titleFrame.midY - statusBarHeight - titleLockOffset
        let titleOffset = -min(titleCollapseOffset, contentOffset)
        let titleCollapseFraction = max(0.0, min(1.0, contentOffset / titleCollapseOffset))
        
        let titleMinScale: CGFloat = 0.7
        let subtitleMinScale: CGFloat = 0.8
        let avatarMinScale: CGFloat = 0.7
        
        let apparentTitleLockOffset = (1.0 - titleCollapseFraction) * 0.0 + titleCollapseFraction * titleMaxLockOffset
        
        self.titleNode.update(stateFractions: [
            TitleNodeStateRegular: self.isAvatarExpanded ? 0.0 : 1.0,
            TitleNodeStateExpanded: self.isAvatarExpanded ? 1.0 : 0.0
        ], transition: transition)
        
        let subtitleAlpha: CGFloat = self.isSettings ? 1.0 - titleCollapseFraction : 1.0
        self.subtitleNode.update(stateFractions: [
            TitleNodeStateRegular: self.isAvatarExpanded ? 0.0 : 1.0,
            TitleNodeStateExpanded: self.isAvatarExpanded ? 1.0 : 0.0
        ], alpha: subtitleAlpha, transition: transition)
        
        self.usernameNode.update(stateFractions: [
            TitleNodeStateRegular: self.isAvatarExpanded ? 0.0 : 1.0,
            TitleNodeStateExpanded: self.isAvatarExpanded ? 1.0 : 0.0
        ], alpha: subtitleAlpha, transition: transition)
        
        let avatarScale: CGFloat
        let avatarOffset: CGFloat
        if self.navigationTransition != nil {
            avatarScale = ((1.0 - transitionFraction) * avatarFrame.width + transitionFraction * transitionSourceAvatarFrame.width) / avatarFrame.width
            avatarOffset = 0.0
        } else {
            avatarScale = 1.0 * (1.0 - titleCollapseFraction) + avatarMinScale * titleCollapseFraction
            avatarOffset = apparentTitleLockOffset + 0.0 * (1.0 - titleCollapseFraction) + 10.0 * titleCollapseFraction
        }
                
        if self.isAvatarExpanded {
            self.avatarListNode.listContainerNode.isHidden = false
            if !transitionSourceAvatarFrame.width.isZero {
                transition.updateCornerRadius(node: self.avatarListNode.listContainerNode, cornerRadius: transitionFraction * transitionSourceAvatarFrame.width / 2.0)
                transition.updateCornerRadius(node: self.avatarListNode.listContainerNode.controlsClippingNode, cornerRadius: transitionFraction * transitionSourceAvatarFrame.width / 2.0)
            } else {
                transition.updateCornerRadius(node: self.avatarListNode.listContainerNode, cornerRadius: 0.0)
                transition.updateCornerRadius(node: self.avatarListNode.listContainerNode.controlsClippingNode, cornerRadius: 0.0)
            }
        } else if self.avatarListNode.listContainerNode.cornerRadius != avatarSize / 2.0 {
            transition.updateCornerRadius(node: self.avatarListNode.listContainerNode.controlsClippingNode, cornerRadius: avatarSize / 2.0)
            transition.updateCornerRadius(node: self.avatarListNode.listContainerNode, cornerRadius: avatarSize / 2.0, completion: { [weak self] _ in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.avatarListNode.avatarContainerNode.canAttachVideo = true
                strongSelf.avatarListNode.listContainerNode.isHidden = true
                if !strongSelf.skipCollapseCompletion {
                    DispatchQueue.main.async {
                        strongSelf.avatarListNode.listContainerNode.isCollapsing = false
                    }
                }
            })
        }
        
        self.avatarListNode.update(size: CGSize(), avatarSize: avatarSize, isExpanded: self.isAvatarExpanded, peer: peer, theme: presentationData.theme, transition: transition)
        self.editingContentNode.avatarNode.update(peer: peer, item: self.avatarListNode.item, updatingAvatar: state.updatingAvatar, uploadProgress: state.avatarUploadProgress, theme: presentationData.theme, avatarSize: avatarSize, isEditing: state.isEditing)
        self.avatarOverlayNode.update(peer: peer, item: self.avatarListNode.item, updatingAvatar: state.updatingAvatar, uploadProgress: state.avatarUploadProgress, theme: presentationData.theme, avatarSize: avatarSize, isEditing: state.isEditing)
        if additive {
            transition.updateSublayerTransformScaleAdditive(node: self.avatarListNode.avatarContainerNode, scale: avatarScale)
            transition.updateSublayerTransformScaleAdditive(node: self.avatarOverlayNode, scale: avatarScale)
        } else {
            transition.updateSublayerTransformScale(node: self.avatarListNode.avatarContainerNode, scale: avatarScale)
            transition.updateSublayerTransformScale(node: self.avatarOverlayNode, scale: avatarScale)
        }
        let apparentAvatarFrame: CGRect
        let controlsClippingFrame: CGRect
        if self.isAvatarExpanded {
            let expandedAvatarCenter = CGPoint(x: expandedAvatarListSize.width / 2.0, y: expandedAvatarListSize.height / 2.0 - contentOffset / 2.0)
            apparentAvatarFrame = CGRect(origin: CGPoint(x: expandedAvatarCenter.x * (1.0 - transitionFraction) + transitionFraction * avatarCenter.x, y: expandedAvatarCenter.y * (1.0 - transitionFraction) + transitionFraction * avatarCenter.y), size: CGSize())
            if !transitionSourceAvatarFrame.width.isZero {
                let expandedFrame = CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: expandedAvatarListSize)
                controlsClippingFrame = CGRect(origin: CGPoint(x: transitionFraction * transitionSourceAvatarFrame.minX + (1.0 - transitionFraction) * expandedFrame.minX, y: transitionFraction * transitionSourceAvatarFrame.minY + (1.0 - transitionFraction) * expandedFrame.minY), size: CGSize(width: transitionFraction * transitionSourceAvatarFrame.width + (1.0 - transitionFraction) * expandedFrame.width, height: transitionFraction * transitionSourceAvatarFrame.height + (1.0 - transitionFraction) * expandedFrame.height))
            } else {
                controlsClippingFrame = CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: expandedAvatarListSize)
            }
        } else {
            apparentAvatarFrame = CGRect(origin: CGPoint(x: avatarCenter.x - avatarFrame.width / 2.0, y: -contentOffset + avatarOffset + avatarCenter.y - avatarFrame.height / 2.0), size: avatarFrame.size)
            controlsClippingFrame = apparentAvatarFrame
        }
        transition.updateFrameAdditive(node: self.avatarListNode, frame: CGRect(origin: apparentAvatarFrame.center, size: CGSize()))
        transition.updateFrameAdditive(node: self.avatarOverlayNode, frame: CGRect(origin: apparentAvatarFrame.center, size: CGSize()))
        
        let avatarListContainerFrame: CGRect
        let avatarListContainerScale: CGFloat
        if self.isAvatarExpanded {
            if !transitionSourceAvatarFrame.width.isZero {
                let neutralAvatarListContainerSize = expandedAvatarListSize
                let avatarListContainerSize = CGSize(width: neutralAvatarListContainerSize.width * (1.0 - transitionFraction) + transitionSourceAvatarFrame.width * transitionFraction, height: neutralAvatarListContainerSize.height * (1.0 - transitionFraction) + transitionSourceAvatarFrame.height * transitionFraction)
                avatarListContainerFrame = CGRect(origin: CGPoint(x: -avatarListContainerSize.width / 2.0, y: -avatarListContainerSize.height / 2.0), size: avatarListContainerSize)
            } else {
                avatarListContainerFrame = CGRect(origin: CGPoint(x: -expandedAvatarListSize.width / 2.0, y: -expandedAvatarListSize.height / 2.0), size: expandedAvatarListSize)
            }
            avatarListContainerScale = 1.0 + max(0.0, -contentOffset / avatarListContainerFrame.height)
        } else {
            avatarListContainerFrame = CGRect(origin: CGPoint(x: -apparentAvatarFrame.width / 2.0, y: -apparentAvatarFrame.height / 2.0), size: apparentAvatarFrame.size)
            avatarListContainerScale = avatarScale
        }
        transition.updateFrame(node: self.avatarListNode.listContainerNode, frame: avatarListContainerFrame)
        let innerScale = avatarListContainerFrame.height / expandedAvatarListSize.height
        let innerDeltaX = (avatarListContainerFrame.width - expandedAvatarListSize.width) / 2.0
        let innerDeltaY = (avatarListContainerFrame.height - expandedAvatarListSize.height) / 2.0
        transition.updateSublayerTransformScale(node: self.avatarListNode.listContainerNode, scale: innerScale)
        transition.updateFrameAdditive(node: self.avatarListNode.listContainerNode.contentNode, frame: CGRect(origin: CGPoint(x: innerDeltaX + expandedAvatarListSize.width / 2.0, y: innerDeltaY + expandedAvatarListSize.height / 2.0), size: CGSize()))
        
        transition.updateFrameAdditive(node: self.avatarListNode.listContainerNode.controlsClippingOffsetNode, frame: CGRect(origin: controlsClippingFrame.center, size: CGSize()))
        transition.updateFrame(node: self.avatarListNode.listContainerNode.controlsClippingNode, frame: CGRect(origin: CGPoint(x: -controlsClippingFrame.width / 2.0, y: -controlsClippingFrame.height / 2.0), size: controlsClippingFrame.size))
        transition.updateFrameAdditive(node: self.avatarListNode.listContainerNode.controlsContainerNode, frame: CGRect(origin: CGPoint(x: -controlsClippingFrame.minX, y: -controlsClippingFrame.minY), size: CGSize(width: expandedAvatarListSize.width, height: expandedAvatarListSize.height)))
        
        transition.updateFrame(node: self.avatarListNode.listContainerNode.shadowNode, frame: CGRect(origin: CGPoint(), size: CGSize(width: expandedAvatarListSize.width, height: navigationHeight + 20.0)))
        transition.updateFrame(node: self.avatarListNode.listContainerNode.stripContainerNode, frame: CGRect(origin: CGPoint(x: 0.0, y: statusBarHeight < 25.0 ? (statusBarHeight + 2.0) : (statusBarHeight - 3.0)), size: CGSize(width: expandedAvatarListSize.width, height: 2.0)))
        transition.updateFrame(node: self.avatarListNode.listContainerNode.highlightContainerNode, frame: CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: expandedAvatarListSize.width, height: expandedAvatarListSize.height)))
        transition.updateAlpha(node: self.avatarListNode.listContainerNode.controlsContainerNode, alpha: self.isAvatarExpanded ? (1.0 - transitionFraction) : 0.0)
        
        if additive {
            transition.updateSublayerTransformScaleAdditive(node: self.avatarListNode.listContainerTransformNode, scale: avatarListContainerScale)
        } else {
            transition.updateSublayerTransformScale(node: self.avatarListNode.listContainerTransformNode, scale: avatarListContainerScale)
        }
        
        self.avatarListNode.listContainerNode.update(size: expandedAvatarListSize, peer: peer, isExpanded: self.isAvatarExpanded, transition: transition)
        if self.avatarListNode.listContainerNode.isCollapsing && !self.ignoreCollapse {
            self.avatarListNode.avatarContainerNode.canAttachVideo = false
        }
        
        var panelWithAvatarHeight: CGFloat = (self.isSettings ? 40.0 : 112.0) + avatarSize
        if twoLineInfo {
            panelWithAvatarHeight += 17.0
        }
        let buttonsCollapseStart = titleCollapseOffset
        let buttonsCollapseEnd = panelWithAvatarHeight - (navigationHeight - statusBarHeight) + 10.0
        
        let buttonsCollapseFraction = max(0.0, contentOffset - buttonsCollapseStart) / (buttonsCollapseEnd - buttonsCollapseStart)
        
        let rawHeight: CGFloat
        let height: CGFloat
        if self.isAvatarExpanded {
            rawHeight = expandedAvatarHeight
            height = max(navigationHeight, rawHeight - contentOffset)
        } else {
            rawHeight = navigationHeight + panelWithAvatarHeight
            height = navigationHeight + max(0.0, panelWithAvatarHeight - contentOffset)
        }
        
        let apparentHeight = (1.0 - transitionFraction) * height + transitionFraction * transitionSourceHeight
        
        if !titleSize.width.isZero && !titleSize.height.isZero {
            if self.navigationTransition != nil {
                var neutralTitleScale: CGFloat = 1.0
                var neutralSubtitleScale: CGFloat = 1.0
                if self.isAvatarExpanded {
                    neutralTitleScale = 0.7
                    neutralSubtitleScale = 1.0
                }
                
                let titleScale = (transitionFraction * transitionSourceTitleFrame.height + (1.0 - transitionFraction) * titleFrame.height * neutralTitleScale) / (titleFrame.height)
                let subtitleScale = max(0.01, min(10.0, (transitionFraction * transitionSourceSubtitleFrame.height + (1.0 - transitionFraction) * subtitleFrame.height * neutralSubtitleScale) / (subtitleFrame.height)))
                
                let titleCenter = CGPoint(x: transitionFraction * transitionSourceTitleFrame.midX + (1.0 - transitionFraction) * titleFrame.midX, y: transitionFraction * transitionSourceTitleFrame.midY + (1.0 - transitionFraction) * titleFrame.midY)
                let subtitleCenter = CGPoint(x: transitionFraction * transitionSourceSubtitleFrame.midX + (1.0 - transitionFraction) * subtitleFrame.midX, y: transitionFraction * transitionSourceSubtitleFrame.midY + (1.0 - transitionFraction) * subtitleFrame.midY)
                
                let rawTitleFrame = CGRect(origin: CGPoint(x: titleCenter.x - titleFrame.size.width * neutralTitleScale / 2.0, y: titleCenter.y - titleFrame.size.height * neutralTitleScale / 2.0), size: CGSize(width: titleFrame.size.width * neutralTitleScale, height: titleFrame.size.height * neutralTitleScale))
                self.titleNodeRawContainer.frame = rawTitleFrame
                transition.updateFrameAdditiveToCenter(node: self.titleNodeContainer, frame: CGRect(origin: rawTitleFrame.center, size: CGSize()))
                transition.updateFrame(node: self.titleNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                let rawSubtitleFrame = CGRect(origin: CGPoint(x: subtitleCenter.x - subtitleFrame.size.width / 2.0, y: subtitleCenter.y - subtitleFrame.size.height / 2.0), size: subtitleFrame.size)
                self.subtitleNodeRawContainer.frame = rawSubtitleFrame
                transition.updateFrameAdditiveToCenter(node: self.subtitleNodeContainer, frame: CGRect(origin: rawSubtitleFrame.center, size: CGSize()))
                transition.updateFrame(node: self.subtitleNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                transition.updateFrame(node: self.usernameNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                transition.updateSublayerTransformScale(node: self.titleNodeContainer, scale: titleScale)
                transition.updateSublayerTransformScale(node: self.subtitleNodeContainer, scale: subtitleScale)
                transition.updateSublayerTransformScale(node: self.usernameNodeContainer, scale: subtitleScale)

            } else {
                let titleScale: CGFloat
                let subtitleScale: CGFloat
                if self.isAvatarExpanded {
                    titleScale = 0.7
                    subtitleScale = 1.0
                } else {
                    titleScale = (1.0 - titleCollapseFraction) * 1.0 + titleCollapseFraction * titleMinScale
                    subtitleScale = (1.0 - titleCollapseFraction) * 1.0 + titleCollapseFraction * subtitleMinScale
                }
                
                let rawTitleFrame = titleFrame
                self.titleNodeRawContainer.frame = rawTitleFrame
                transition.updateFrame(node: self.titleNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                let rawSubtitleFrame = subtitleFrame
                self.subtitleNodeRawContainer.frame = rawSubtitleFrame
                let rawUsernameFrame = usernameFrame
                self.usernameNodeRawContainer.frame = rawUsernameFrame
                if self.isAvatarExpanded {
                    transition.updateFrameAdditive(node: self.titleNodeContainer, frame: CGRect(origin: rawTitleFrame.center, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset + apparentTitleLockOffset))
                    transition.updateFrameAdditive(node: self.subtitleNodeContainer, frame: CGRect(origin: rawSubtitleFrame.center, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset))
                    transition.updateFrameAdditive(node: self.usernameNodeContainer, frame: CGRect(origin: rawUsernameFrame.center, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset))
                } else {
                    transition.updateFrameAdditiveToCenter(node: self.titleNodeContainer, frame: CGRect(origin: rawTitleFrame.center, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset + apparentTitleLockOffset))
                    
                    var subtitleCenter = rawSubtitleFrame.center
                    subtitleCenter.x = rawTitleFrame.center.x + (subtitleCenter.x - rawTitleFrame.center.x) * subtitleScale
                    transition.updateFrameAdditiveToCenter(node: self.subtitleNodeContainer, frame: CGRect(origin: subtitleCenter, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset))
                    
                    var usernameCenter = rawUsernameFrame.center
                    usernameCenter.x = rawTitleFrame.center.x + (usernameCenter.x - rawTitleFrame.center.x) * subtitleScale
                    transition.updateFrameAdditiveToCenter(node: self.usernameNodeContainer, frame: CGRect(origin: usernameCenter, size: CGSize()).offsetBy(dx: 0.0, dy: titleOffset))
                }
                transition.updateFrame(node: self.subtitleNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                transition.updateFrame(node: self.usernameNode, frame: CGRect(origin: CGPoint(), size: CGSize()))
                transition.updateSublayerTransformScaleAdditive(node: self.titleNodeContainer, scale: titleScale)
                transition.updateSublayerTransformScaleAdditive(node: self.subtitleNodeContainer, scale: subtitleScale)
                transition.updateSublayerTransformScaleAdditive(node: self.usernameNodeContainer, scale: subtitleScale)
            }
        }
        
        let buttonSpacing: CGFloat
        if self.isAvatarExpanded {
            buttonSpacing = 16.0
        } else {
            let normWidth = min(width, containerHeight)
            let buttonSpacingValue = floor((normWidth - floor(CGFloat(buttonKeys.count) * defaultButtonSize)) / CGFloat(buttonKeys.count + 1))
            buttonSpacing = min(buttonSpacingValue, 160.0)
        }
        
        let expandedButtonSize: CGFloat = 32.0
        let buttonsWidth = buttonSpacing * CGFloat(buttonKeys.count - 1) + CGFloat(buttonKeys.count) * defaultButtonSize
        var buttonRightOrigin: CGPoint
        if self.isAvatarExpanded {
            buttonRightOrigin = CGPoint(x: width - 16.0, y: apparentHeight - 74.0)
        } else {
            buttonRightOrigin = CGPoint(x: floor((width - buttonsWidth) / 2.0) + buttonsWidth, y: apparentHeight - 74.0)
        }
        let buttonsScale: CGFloat
        let buttonsAlpha: CGFloat
        let apparentButtonSize: CGFloat
        let buttonsVerticalOffset: CGFloat
        
        var buttonsAlphaTransition = transition
        
        if self.navigationTransition != nil {
            if case let .animated(duration, curve) = transition, transitionFraction >= 1.0 - CGFloat.ulpOfOne {
                buttonsAlphaTransition = .animated(duration: duration * 0.6, curve: curve)
            }
            if self.isAvatarExpanded {
                apparentButtonSize = expandedButtonSize
            } else {
                apparentButtonSize = defaultButtonSize
            }
            let neutralButtonsScale = apparentButtonSize / defaultButtonSize
            buttonsScale = (1.0 - transitionFraction) * neutralButtonsScale + 0.2 * transitionFraction
            buttonsAlpha = 1.0 - transitionFraction
            
            let neutralButtonsOffset: CGFloat
            if self.isAvatarExpanded {
                neutralButtonsOffset = 74.0 - 15.0 - defaultButtonSize + (defaultButtonSize - apparentButtonSize) / 2.0
            } else {
                neutralButtonsOffset = (1.0 - buttonsScale) * apparentButtonSize
            }
                
            buttonsVerticalOffset = (1.0 - transitionFraction) * neutralButtonsOffset + ((1.0 - buttonsScale) * apparentButtonSize) * transitionFraction
        } else {
            apparentButtonSize = self.isAvatarExpanded ? expandedButtonSize : defaultButtonSize
            if self.isAvatarExpanded {
                buttonsScale = apparentButtonSize / defaultButtonSize
                buttonsVerticalOffset = 74.0 - 15.0 - defaultButtonSize + (defaultButtonSize - apparentButtonSize) / 2.0
            } else {
                buttonsScale = (1.0 - buttonsCollapseFraction) * 1.0 + 0.2 * buttonsCollapseFraction
                buttonsVerticalOffset = (1.0 - buttonsScale) * apparentButtonSize
            }
            buttonsAlpha = 1.0 - buttonsCollapseFraction
        }
        let buttonsScaledOffset = (defaultButtonSize - apparentButtonSize) / 2.0
        for buttonKey in buttonKeys.reversed() {
            let buttonNode: PeerInfoHeaderButtonNode
            var wasAdded = false
            if let current = self.buttonNodes[buttonKey] {
                buttonNode = current
            } else {
                wasAdded = true
                buttonNode = PeerInfoHeaderButtonNode(key: buttonKey, action: { [weak self] buttonNode in
                    self?.buttonPressed(buttonNode)
                })
                self.buttonNodes[buttonKey] = buttonNode
                self.regularContentNode.addSubnode(buttonNode)
            }
            
            let buttonFrame = CGRect(origin: CGPoint(x: buttonRightOrigin.x - defaultButtonSize + buttonsScaledOffset, y: buttonRightOrigin.y), size: CGSize(width: defaultButtonSize, height: defaultButtonSize))
            let buttonTransition: ContainedViewLayoutTransition = wasAdded ? .immediate : transition
            
            let apparentButtonFrame = buttonFrame.offsetBy(dx: 0.0, dy: buttonsVerticalOffset)
            if additive {
                buttonTransition.updateFrameAdditiveToCenter(node: buttonNode, frame: apparentButtonFrame)
            } else {
                buttonTransition.updateFrame(node: buttonNode, frame: apparentButtonFrame)
            }
            let buttonText: String
            let buttonIcon: PeerInfoHeaderButtonIcon
            switch buttonKey {
            case .message:
                buttonText = presentationData.strings.PeerInfo_ButtonMessage
                buttonIcon = .message
            case .discussion:
                buttonText = presentationData.strings.PeerInfo_ButtonDiscuss
                buttonIcon = .message
            case .call:
                buttonText = presentationData.strings.PeerInfo_ButtonCall
                buttonIcon = .call
            case .videoCall:
                buttonText = presentationData.strings.PeerInfo_ButtonVideoCall
                buttonIcon = .videoCall
            case .mute:
                if let notificationSettings = notificationSettings, case .muted = notificationSettings.muteState {
                    buttonText = presentationData.strings.PeerInfo_ButtonUnmute
                    buttonIcon = .unmute
                } else {
                    buttonText = presentationData.strings.PeerInfo_ButtonMute
                    buttonIcon = .mute
                }
            case .more:
                buttonText = presentationData.strings.PeerInfo_ButtonMore
                buttonIcon = .more
            case .addMember:
                buttonText = presentationData.strings.PeerInfo_ButtonAddMember
                buttonIcon = .addMember
            case .search:
                buttonText = presentationData.strings.PeerInfo_ButtonSearch
                buttonIcon = .search
            case .leave:
                buttonText = presentationData.strings.PeerInfo_ButtonLeave
                buttonIcon = .leave
            }
            buttonNode.update(size: buttonFrame.size, text: buttonText, icon: buttonIcon, isExpanded: self.isAvatarExpanded, presentationData: presentationData, transition: buttonTransition)
            transition.updateSublayerTransformScaleAdditive(node: buttonNode, scale: buttonsScale)
            
            if wasAdded {
                buttonNode.alpha = 0.0
            }
            buttonsAlphaTransition.updateAlpha(node: buttonNode, alpha: buttonsAlpha)
            
            let hiddenWhileExpanded: Bool
            if buttonKeys.count > 3 {
                if self.isOpenedFromChat {
                    switch buttonKey {
                    case .message, .search, .videoCall:
                        hiddenWhileExpanded = true
                    default:
                        hiddenWhileExpanded = false
                    }
                } else {
                    switch buttonKey {
                    case .mute, .search, .videoCall:
                        hiddenWhileExpanded = true
                    default:
                        hiddenWhileExpanded = false
                    }
                }
            } else {
                hiddenWhileExpanded = false
            }
            
            if self.isAvatarExpanded, hiddenWhileExpanded {
                if case let .animated(duration, curve) = transition {
                    ContainedViewLayoutTransition.animated(duration: duration * 0.3, curve: curve).updateAlpha(node: buttonNode.containerNode, alpha: 0.0)
                } else {
                    transition.updateAlpha(node: buttonNode.containerNode, alpha: 0.0)
                }
            } else {
                if case .mute = buttonKey, buttonNode.containerNode.alpha.isZero, additive {
                    if case let .animated(duration, curve) = transition {
                        ContainedViewLayoutTransition.animated(duration: duration * 0.3, curve: curve).updateAlpha(node: buttonNode.containerNode, alpha: 1.0)
                    } else {
                        transition.updateAlpha(node: buttonNode.containerNode, alpha: 1.0)
                    }
                } else {
                    transition.updateAlpha(node: buttonNode.containerNode, alpha: 1.0)
                }
                buttonRightOrigin.x -= apparentButtonSize + buttonSpacing
            }
        }
        
        for key in self.buttonNodes.keys {
            if !buttonKeys.contains(key) {
                if let buttonNode = self.buttonNodes[key] {
                    self.buttonNodes.removeValue(forKey: key)
                    buttonNode.removeFromSupernode()
                }
            }
        }
        
        let resolvedRegularHeight: CGFloat
        if self.isAvatarExpanded {
            resolvedRegularHeight = expandedAvatarListSize.height + expandedAvatarControlsHeight
        } else {
            resolvedRegularHeight = panelWithAvatarHeight + navigationHeight
        }
        
        let backgroundFrame: CGRect
        let separatorFrame: CGRect
        
        let resolvedHeight: CGFloat
        if state.isEditing {
            resolvedHeight = editingContentHeight
            backgroundFrame = CGRect(origin: CGPoint(x: 0.0, y: -2000.0 + max(navigationHeight, resolvedHeight - contentOffset)), size: CGSize(width: width, height: 2000.0))
            separatorFrame = CGRect(origin: CGPoint(x: 0.0, y: max(navigationHeight, resolvedHeight - contentOffset)), size: CGSize(width: width, height: UIScreenPixel))
        } else {
            resolvedHeight = resolvedRegularHeight
            backgroundFrame = CGRect(origin: CGPoint(x: 0.0, y: -2000.0 + apparentHeight), size: CGSize(width: width, height: 2000.0))
            separatorFrame = CGRect(origin: CGPoint(x: 0.0, y: apparentHeight), size: CGSize(width: width, height: UIScreenPixel))
        }
        
        transition.updateFrame(node: self.regularContentNode, frame: CGRect(origin: CGPoint(), size: CGSize(width: width, height: resolvedHeight)))
        
        if additive {
            transition.updateFrameAdditive(node: self.backgroundNode, frame: backgroundFrame)
            transition.updateFrameAdditive(node: self.expandedBackgroundNode, frame: backgroundFrame)
            transition.updateFrameAdditive(node: self.separatorNode, frame: separatorFrame)
        } else {
            transition.updateFrame(node: self.backgroundNode, frame: backgroundFrame)
            transition.updateFrame(node: self.expandedBackgroundNode, frame: backgroundFrame)
            transition.updateFrame(node: self.separatorNode, frame: separatorFrame)
        }
        
        return resolvedHeight
    }
    
    private func buttonPressed(_ buttonNode: PeerInfoHeaderButtonNode) {
        self.performButtonAction?(buttonNode.key)
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        guard let result = super.hitTest(point, with: event) else {
            return nil
        }
        if result.isDescendant(of: self.navigationButtonContainer.view) {
            return result
        }
        if !self.backgroundNode.frame.contains(point) {
            return nil
        }
        if result == self.view || result == self.regularContentNode.view || result == self.editingContentNode.view {
            return nil
        }
        return result
    }
    
    func updateIsAvatarExpanded(_ isAvatarExpanded: Bool, transition: ContainedViewLayoutTransition) {
        if self.isAvatarExpanded != isAvatarExpanded {
            self.isAvatarExpanded = isAvatarExpanded
            if isAvatarExpanded {
                self.avatarListNode.listContainerNode.selectFirstItem()
            }
            if case .animated = transition, !isAvatarExpanded {
                self.avatarListNode.animateAvatarCollapse(transition: transition)
            }
        }
    }
}