//import Foundation
//import UIKit
//import Display
//import AsyncDisplayKit
//import ComponentFlow
//import SwiftSignalKit
//import AccountContext
//import TelegramCore
//import MultilineTextComponent
//import AvatarNode
//import TelegramPresentationData
//import CheckNode
//import TelegramStringFormatting
//import PeerPresenceStatusManager
//
//private let avatarFont = avatarPlaceholderFont(size: 15.0)
//
//final class PeerListItemComponent: Component {
//    enum SelectionState: Equatable {
//        case none
//        case editing(isSelected: Bool, isTinted: Bool)
//    }
//    
//    let context: AccountContext
//    let theme: PresentationTheme
//    let strings: PresentationStrings
//    let sideInset: CGFloat
//    let title: String
//    let peer: EnginePeer?
//    let subtitle: String?
//    let presence: EnginePeer.Presence?
//    let selectionState: SelectionState
//    let hasNext: Bool
//    let action: (EnginePeer) -> Void
//    
//    init(
//        context: AccountContext,
//        theme: PresentationTheme,
//        strings: PresentationStrings,
//        sideInset: CGFloat,
//        title: String,
//        peer: EnginePeer?,
//        subtitle: String?,
//        presence: EnginePeer.Presence?,
//        selectionState: SelectionState,
//        hasNext: Bool,
//        action: @escaping (EnginePeer) -> Void
//    ) {
//        self.context = context
//        self.theme = theme
//        self.strings = strings
//        self.sideInset = sideInset
//        self.title = title
//        self.peer = peer
//        self.subtitle = subtitle
//        self.presence = presence
//        self.selectionState = selectionState
//        self.hasNext = hasNext
//        self.action = action
//    }
//    
//    static func ==(lhs: PeerListItemComponent, rhs: PeerListItemComponent) -> Bool {
//        if lhs.context !== rhs.context {
//            return false
//        }
//        if lhs.theme !== rhs.theme {
//            return false
//        }
//        if lhs.strings !== rhs.strings {
//            return false
//        }
//        if lhs.sideInset != rhs.sideInset {
//            return false
//        }
//        if lhs.title != rhs.title {
//            return false
//        }
//        if lhs.peer != rhs.peer {
//            return false
//        }
//        if lhs.subtitle != rhs.subtitle {
//            return false
//        }
//        if lhs.presence != rhs.presence {
//            return false
//        }
//        if lhs.selectionState != rhs.selectionState {
//            return false
//        }
//        if lhs.hasNext != rhs.hasNext {
//            return false
//        }
//        return true
//    }
//    
//    final class View: UIView {
//        private let containerButton: HighlightTrackingButton
//        
//        private let title = ComponentView<Empty>()
//        private let label = ComponentView<Empty>()
//        private let separatorLayer: SimpleLayer
//        private let avatarNode: AvatarNode
//        
//        private var checkLayer: CheckLayer?
//        
//        private var component: PeerListItemComponent?
//        private weak var state: EmptyComponentState?
//        
//        private var presenceManager: PeerPresenceStatusManager?
//        
//        override init(frame: CGRect) {
//            self.separatorLayer = SimpleLayer()
//            
//            self.containerButton = HighlightTrackingButton()
//            
//            self.avatarNode = AvatarNode(font: avatarFont)
//            self.avatarNode.isLayerBacked = true
//            
//            super.init(frame: frame)
//            
//            self.layer.addSublayer(self.separatorLayer)
//            self.addSubview(self.containerButton)
//            self.containerButton.layer.addSublayer(self.avatarNode.layer)
//            
//            self.containerButton.addTarget(self, action: #selector(self.pressed), for: .touchUpInside)
//        }
//        
//        required init?(coder: NSCoder) {
//            fatalError("init(coder:) has not been implemented")
//        }
//        
//        @objc private func pressed() {
//            guard let component = self.component, let peer = component.peer else {
//                return
//            }
//            component.action(peer)
//        }
//        
//        func update(component: PeerListItemComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: Transition) -> CGSize {
//            let animationHint = transition.userData(ShareWithPeersScreenComponent.AnimationHint.self)
//            var synchronousLoad = false
//            if let animationHint, animationHint.contentReloaded {
//                synchronousLoad = true
//            }
//            
//            let themeUpdated = self.component?.theme !== component.theme
//            
//            var hasSelectionUpdated = false
//            if let previousComponent = self.component {
//                switch previousComponent.selectionState {
//                case .none:
//                    if case .none = component.selectionState {
//                    } else {
//                        hasSelectionUpdated = true
//                    }
//                case .editing:
//                    if case .editing = component.selectionState {
//                    } else {
//                        hasSelectionUpdated = true
//                    }
//                }
//            }
//            
//            if let presence = component.presence {
//                let presenceManager: PeerPresenceStatusManager
//                if let current = self.presenceManager {
//                    presenceManager = current
//                } else {
//                    presenceManager = PeerPresenceStatusManager(update: { [weak self] in
//                        self?.state?.updated(transition: .immediate)
//                    })
//                    self.presenceManager = presenceManager
//                }
//                presenceManager.reset(presence: presence)
//            } else {
//                if self.presenceManager != nil {
//                    self.presenceManager = nil
//                }
//            }
//            
//            self.component = component
//            self.state = state
//            
//            let contextInset: CGFloat = 0.0
//            
//            let height: CGFloat = 60.0
//            let verticalInset: CGFloat = 1.0
//            var leftInset: CGFloat = 62.0 + component.sideInset
//            let rightInset: CGFloat = contextInset * 2.0 + 8.0 + component.sideInset
//            var avatarLeftInset: CGFloat = component.sideInset + 10.0
//            
//            if case let .editing(isSelected, isTinted) = component.selectionState {
//                leftInset += 44.0
//                avatarLeftInset += 44.0
//                let checkSize: CGFloat = 22.0
//                
//                let checkLayer: CheckLayer
//                if let current = self.checkLayer {
//                    checkLayer = current
//                    if themeUpdated {
//                        var theme = CheckNodeTheme(theme: component.theme, style: .plain)
//                        if isTinted {
//                            theme.backgroundColor = theme.backgroundColor.mixedWith(component.theme.list.itemBlocksBackgroundColor, alpha: 0.5)
//                        }
//                        checkLayer.theme = theme
//                    }
//                    checkLayer.setSelected(isSelected, animated: !transition.animation.isImmediate)
//                } else {
//                    var theme = CheckNodeTheme(theme: component.theme, style: .plain)
//                    if isTinted {
//                        theme.backgroundColor = theme.backgroundColor.mixedWith(component.theme.list.itemBlocksBackgroundColor, alpha: 0.5)
//                    }
//                    checkLayer = CheckLayer(theme: theme)
//                    self.checkLayer = checkLayer
//                    self.containerButton.layer.addSublayer(checkLayer)
//                    checkLayer.frame = CGRect(origin: CGPoint(x: -checkSize, y: floor((height - verticalInset * 2.0 - checkSize) / 2.0)), size: CGSize(width: checkSize, height: checkSize))
//                    checkLayer.setSelected(isSelected, animated: false)
//                    checkLayer.setNeedsDisplay()
//                }
//                transition.setFrame(layer: checkLayer, frame: CGRect(origin: CGPoint(x: floor((54.0 - checkSize) * 0.5), y: floor((height - verticalInset * 2.0 - checkSize) / 2.0)), size: CGSize(width: checkSize, height: checkSize)))
//            } else {
//                if let checkLayer = self.checkLayer {
//                    self.checkLayer = nil
//                    transition.setPosition(layer: checkLayer, position: CGPoint(x: -checkLayer.bounds.width * 0.5, y: checkLayer.position.y), completion: { [weak checkLayer] _ in
//                        checkLayer?.removeFromSuperlayer()
//                    })
//                }
//            }
//            
//            let avatarSize: CGFloat = 40.0
//            
//            let avatarFrame = CGRect(origin: CGPoint(x: avatarLeftInset, y: floor((height - verticalInset * 2.0 - avatarSize) / 2.0)), size: CGSize(width: avatarSize, height: avatarSize))
//            if self.avatarNode.bounds.isEmpty {
//                self.avatarNode.frame = avatarFrame
//            } else {
//                transition.setFrame(layer: self.avatarNode.layer, frame: avatarFrame)
//            }
//            if let peer = component.peer {
//                let clipStyle: AvatarNodeClipStyle
//                if case let .channel(channel) = peer, channel.flags.contains(.isForum) {
//                    clipStyle = .roundedRect
//                } else {
//                    clipStyle = .round
//                }
//                self.avatarNode.setPeer(context: component.context, theme: component.theme, peer: peer, clipStyle: clipStyle, synchronousLoad: synchronousLoad, displayDimensions: CGSize(width: avatarSize, height: avatarSize))
//            }
//            
//            let labelData: (String, Bool)
//            
//            if let presence = component.presence {
//                let timestamp = CFAbsoluteTimeGetCurrent() + NSTimeIntervalSince1970
//                labelData = stringAndActivityForUserPresence(strings: component.strings, dateTimeFormat: PresentationDateTimeFormat(), presence: presence, relativeTo: Int32(timestamp))
//            } else if let subtitle = component.subtitle {
//                labelData = (subtitle, false)
//            } else if case .legacyGroup = component.peer {
//                labelData = (component.strings.Group_Status, false)
//            } else if case let .channel(channel) = component.peer {
//                if case .group = channel.info {
//                    labelData = (component.strings.Group_Status, false)
//                } else {
//                    labelData = (component.strings.Channel_Status, false)
//                }
//            } else {
//                labelData = (component.strings.Group_Status, false)
//            }
//            
//            let labelSize = self.label.update(
//                transition: .immediate,
//                component: AnyComponent(MultilineTextComponent(
//                    text: .plain(NSAttributedString(string: labelData.0, font: Font.regular(15.0), textColor: labelData.1 ? component.theme.list.itemAccentColor : component.theme.list.itemSecondaryTextColor))
//                )),
//                environment: {},
//                containerSize: CGSize(width: availableSize.width - leftInset - rightInset, height: 100.0)
//            )
//            
//            let previousTitleFrame = self.title.view?.frame
//            var previousTitleContents: UIView?
//            if hasSelectionUpdated && !"".isEmpty {
//                previousTitleContents = self.title.view?.snapshotView(afterScreenUpdates: false)
//            }
//            
//            let titleSize = self.title.update(
//                transition: .immediate,
//                component: AnyComponent(MultilineTextComponent(
//                    text: .plain(NSAttributedString(string: component.title, font: Font.semibold(17.0), textColor: component.theme.list.itemPrimaryTextColor))
//                )),
//                environment: {},
//                containerSize: CGSize(width: availableSize.width - leftInset - rightInset, height: 100.0)
//            )
//            
//            let titleSpacing: CGFloat = 1.0
//            let centralContentHeight: CGFloat = titleSize.height + labelSize.height + titleSpacing
//            
//            let titleFrame = CGRect(origin: CGPoint(x: leftInset, y: floor((height - verticalInset * 2.0 - centralContentHeight) / 2.0)), size: titleSize)
//            if let titleView = self.title.view {
//                if titleView.superview == nil {
//                    titleView.isUserInteractionEnabled = false
//                    self.containerButton.addSubview(titleView)
//                }
//                titleView.frame = titleFrame
//                if let previousTitleFrame, previousTitleFrame.origin.x != titleFrame.origin.x {
//                    transition.animatePosition(view: titleView, from: CGPoint(x: previousTitleFrame.origin.x - titleFrame.origin.x, y: 0.0), to: CGPoint(), additive: true)
//                }
//                
//                if let previousTitleFrame, let previousTitleContents, previousTitleFrame.size != titleSize {
//                    previousTitleContents.frame = CGRect(origin: previousTitleFrame.origin, size: previousTitleFrame.size)
//                    self.addSubview(previousTitleContents)
//                    
//                    transition.setFrame(view: previousTitleContents, frame: CGRect(origin: titleFrame.origin, size: previousTitleFrame.size))
//                    transition.setAlpha(view: previousTitleContents, alpha: 0.0, completion: { [weak previousTitleContents] _ in
//                        previousTitleContents?.removeFromSuperview()
//                    })
//                    transition.animateAlpha(view: titleView, from: 0.0, to: 1.0)
//                }
//            }
//            if let labelView = self.label.view {
//                if labelView.superview == nil {
//                    labelView.isUserInteractionEnabled = false
//                    self.containerButton.addSubview(labelView)
//                }
//                transition.setFrame(view: labelView, frame: CGRect(origin: CGPoint(x: titleFrame.minX, y: titleFrame.maxY + titleSpacing), size: labelSize))
//            }
//            
//            if themeUpdated {
//                self.separatorLayer.backgroundColor = component.theme.list.itemPlainSeparatorColor.cgColor
//            }
//            transition.setFrame(layer: self.separatorLayer, frame: CGRect(origin: CGPoint(x: leftInset, y: height), size: CGSize(width: availableSize.width - leftInset, height: UIScreenPixel)))
//            self.separatorLayer.isHidden = !component.hasNext
//            
//            let containerFrame = CGRect(origin: CGPoint(x: contextInset, y: verticalInset), size: CGSize(width: availableSize.width - contextInset * 2.0, height: height - verticalInset * 2.0))
//            transition.setFrame(view: self.containerButton, frame: containerFrame)
//            
//            return CGSize(width: availableSize.width, height: height)
//        }
//    }
//    
//    func makeView() -> View {
//        return View(frame: CGRect())
//    }
//    
//    func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: Transition) -> CGSize {
//        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
//    }
//}