Swiftgram/submodules/TelegramCallsUI/Sources/Components/MediaStreamComponent.swift

import Foundation
import UIKit
import ComponentFlow
import Display
import AccountContext
import SwiftSignalKit
import AVKit
import TelegramCore
import Postbox
import ShareController
import UndoUI
import TelegramPresentationData
import PresentationDataUtils
import LottieAnimationComponent
import ContextUI
import ViewControllerComponent
import BundleIconComponent
import CreateExternalMediaStreamScreen
import HierarchyTrackingLayer
import UndoPanelComponent

final class StreamTitleComponent: Component {
    let text: String
    let isRecording: Bool
    let isActive: Bool
    
    init(text: String, isRecording: Bool, isActive: Bool) {
        self.text = text
        self.isRecording = isRecording
        self.isActive = isActive
    }
    
    static func ==(lhs: StreamTitleComponent, rhs: StreamTitleComponent) -> Bool {
        if lhs.text != rhs.text {
            return false
        }
        if lhs.isRecording != rhs.isRecording {
            return false
        }
        if lhs.isActive != rhs.isActive {
            return false
        }
        return false
    }
    
    final class LiveIndicatorView: UIView {
        private let label = UILabel()
        private let stalledAnimatedGradient = CAGradientLayer()
        private var wasLive = false
        
        override init(frame: CGRect = .zero) {
            super.init(frame: frame)
            
            addSubview(label)
            label.text = "LIVE"
            label.font = .systemFont(ofSize: 12, weight: .semibold)
            label.textAlignment = .center
            label.textColor = .white
            layer.addSublayer(stalledAnimatedGradient)
            self.clipsToBounds = true
            if #available(iOS 13.0, *) {
                self.layer.cornerCurve = .continuous
            }
            toggle(isLive: false)
        }
        
        required init?(coder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
        
        override func layoutSubviews() {
            super.layoutSubviews()
            
            label.frame = bounds
            stalledAnimatedGradient.frame = bounds
            self.layer.cornerRadius = min(bounds.width, bounds.height) / 2
        }
        
        func toggle(isLive: Bool) {
            // TODO: get actual colors
            if isLive {
                if !wasLive {
                    // TODO: animate
                    wasLive = true
//                    let frame = self.frame
                    let anim = CAKeyframeAnimation(keyPath: "transform.scale")
                    anim.values = [1.0, 1.4, 1.0]
                    anim.keyTimes = [0, 0.5, 1]
                    self.layer.add(anim, forKey: "transform")
                    
//                    UIView.transition(with: self, duration: <#T##TimeInterval#>, animations: <#T##(() -> Void)?##(() -> Void)?##() -> Void#>)
                    UIView.animate(withDuration: 0.15, animations: {
                        self.toggle(isLive: true)
//                        self.transform = .init(scaleX: 1.5, y: 1.5)
                    }, completion: { _ in
//                        UIView.animate(withDuration: 0.15) {
//                            self.transform = .identity
////                            self.frame = frame
//                        }
                    })
                    return
                }
                self.backgroundColor = UIColor(red: 0.82, green: 0.26, blue: 0.37, alpha: 1)
                stalledAnimatedGradient.opacity = 0
                stalledAnimatedGradient.removeAllAnimations()
            } else {
                if wasLive {
                    // TODO: animate
                    wasLive = false
                    UIView.animate(withDuration: 0.3) {
                        self.toggle(isLive: false)
                    }
                    return
                }
                self.backgroundColor = UIColor(white: 0.36, alpha: 1)
                stalledAnimatedGradient.opacity = 1
//                stalledAnimatedGradient.add(<#T##anim: CAAnimation##CAAnimation#>, forKey: <#T##String?#>)
            }
            wasLive = isLive
        }
    }
    
    public final class View: UIView {
        private let textView: ComponentHostView<Empty>
        private var indicatorView: UIImageView?
        let liveIndicatorView = LiveIndicatorView()
        
        private let trackingLayer: HierarchyTrackingLayer
        
        override init(frame: CGRect) {
            self.textView = ComponentHostView<Empty>()
            
            self.trackingLayer = HierarchyTrackingLayer()
            
            super.init(frame: frame)
            
            self.addSubview(self.textView)
            self.addSubview(self.liveIndicatorView)
            
            self.trackingLayer.didEnterHierarchy = { [weak self] in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.updateIndicatorAnimation()
            }
        }
        
        required init?(coder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
        
        private func updateIndicatorAnimation() {
            guard let indicatorView = self.indicatorView else {
                return
            }
            if indicatorView.layer.animation(forKey: "blink") == nil {
                let animation = CAKeyframeAnimation(keyPath: "opacity")
                animation.values = [1.0 as NSNumber, 1.0 as NSNumber, 0.55 as NSNumber]
                animation.keyTimes = [0.0 as NSNumber, 0.4546 as NSNumber, 0.9091 as NSNumber, 1 as NSNumber]
                animation.duration = 0.7
                animation.autoreverses = true
                animation.repeatCount = Float.infinity
                indicatorView.layer.add(animation, forKey: "recording")
            }
        }
        
        func update(component: StreamTitleComponent, availableSize: CGSize, transition: Transition) -> CGSize {
            let textSize = self.textView.update(
                transition: .immediate,
                component: AnyComponent(Text(
                    text: component.text,
                    font: Font.semibold(17.0),
                    color: .white
                )),
                environment: {},
                containerSize: availableSize
            )
            
            if component.isRecording {
                if self.indicatorView == nil {
                    let indicatorView = UIImageView(image: generateFilledCircleImage(diameter: 8.0, color: .red, strokeColor: nil, strokeWidth: nil, backgroundColor: nil))
                    self.addSubview(indicatorView)
                    self.indicatorView = indicatorView
                    
                    self.updateIndicatorAnimation()
                }
            } else {
                if let indicatorView = self.indicatorView {
                    self.indicatorView = nil
                    indicatorView.removeFromSuperview()
                }
            }
            let sideInset: CGFloat = 20.0
            let size = CGSize(width: textSize.width + sideInset * 2.0, height: textSize.height)
            let textFrame = CGRect(origin: CGPoint(x: sideInset, y: floor((size.height - textSize.height) / 2.0)), size: textSize)
            self.textView.frame = textFrame
            
            liveIndicatorView.frame = CGRect(origin: CGPoint(x: textFrame.maxX + 6.0, y: floorToScreenPixels((size.height - textSize.height) / 2.0 - 2) + 1.0), size: .init(width: 40, height: 22))
            self.liveIndicatorView.toggle(isLive: component.isActive)
            
            if let indicatorView = self.indicatorView, let image = indicatorView.image {
                indicatorView.frame = CGRect(origin: CGPoint(x: liveIndicatorView.frame.maxX + 6.0, y: floorToScreenPixels((size.height - image.size.height) / 2.0) + 1.0), size: image.size)
            }
            
            return size
        }
    }
    
    public func makeView() -> View {
        return View(frame: CGRect())
    }
    
    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: Transition) -> CGSize {
        return view.update(component: self, availableSize: availableSize, transition: transition)
    }
}

private final class NavigationBarComponent: CombinedComponent {
    let topInset: CGFloat
    let sideInset: CGFloat
    let leftItem: AnyComponent<Empty>?
    let rightItems: [AnyComponentWithIdentity<Empty>]
    let centerItem: AnyComponent<Empty>?
    
    init(
        topInset: CGFloat,
        sideInset: CGFloat,
        leftItem: AnyComponent<Empty>?,
        rightItems: [AnyComponentWithIdentity<Empty>],
        centerItem: AnyComponent<Empty>?
    ) {
        self.topInset = 0 // topInset
        self.sideInset = sideInset
        self.leftItem = leftItem
        self.rightItems = rightItems
        self.centerItem = centerItem
    }
    
    static func ==(lhs: NavigationBarComponent, rhs: NavigationBarComponent) -> Bool {
        if lhs.topInset != rhs.topInset {
            return false
        }
        if lhs.sideInset != rhs.sideInset {
            return false
        }
        if lhs.leftItem != rhs.leftItem {
            return false
        }
        if lhs.rightItems != rhs.rightItems {
            return false
        }
        if lhs.centerItem != rhs.centerItem {
            return false
        }
        
        return true
    }
    
    static var body: Body {
        let leftItem = Child(environment: Empty.self)
        let rightItems = ChildMap(environment: Empty.self, keyedBy: AnyHashable.self)
        let centerItem = Child(environment: Empty.self)
        
        return { context in
            var availableWidth = context.availableSize.width
            let sideInset: CGFloat = 16.0 + context.component.sideInset
            
            let contentHeight: CGFloat = 44.0
            let size = CGSize(width: context.availableSize.width, height: context.component.topInset + contentHeight)
            
            let leftItem = context.component.leftItem.flatMap { leftItemComponent in
                return leftItem.update(
                    component: leftItemComponent,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
            }
            if let leftItem = leftItem {
                availableWidth -= leftItem.size.width
            }
            
            var rightItemList: [_UpdatedChildComponent] = []
            for item in context.component.rightItems {
                let item = rightItems[item.id].update(
                    component: item.component,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
                rightItemList.append(item)
                availableWidth -= item.size.width
            }
            
            let centerItem = context.component.centerItem.flatMap { centerItemComponent in
                return centerItem.update(
                    component: centerItemComponent,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
            }
            if let centerItem = centerItem {
                availableWidth -= centerItem.size.width
            }
            
            var centerLeftInset = sideInset
            if let leftItem = leftItem {
                context.add(leftItem
                    .position(CGPoint(x: sideInset + leftItem.size.width / 2.0, y: context.component.topInset + contentHeight / 2.0))
                )
                centerLeftInset += leftItem.size.width + 4.0
            }
            
//            var centerRightInset = sideInset
            var rightItemX = context.availableSize.width - sideInset
            for item in rightItemList.reversed() {
                context.add(item
                    .position(CGPoint(x: rightItemX - item.size.width / 2.0, y: context.component.topInset + contentHeight / 2.0))
                )
                rightItemX -= item.size.width + 8.0
//                centerRightInset += item.size.width + 8.0
            }
            
//            let maxCenterInset = max(centerLeftInset, centerRightInset)
            let someUndesiredOffset: CGFloat = 16
            if let centerItem = centerItem {
                context.add(centerItem
                    .position(CGPoint(x: context.availableSize.width / 2 - someUndesiredOffset /*maxCenterInset + (context.availableSize.width - maxCenterInset - maxCenterInset) / 2.0*/, y: context.component.topInset + contentHeight / 2.0))
                )
            }
            
            return size
        }
    }
}

private final class OriginInfoComponent: CombinedComponent {
    let title: String
    let subtitle: String
    
    init(
        title: String,
        subtitle: String
    ) {
        self.title = title
        self.subtitle = subtitle
    }
    
    static func ==(lhs: OriginInfoComponent, rhs: OriginInfoComponent) -> Bool {
        if lhs.title != rhs.title {
            return false
        }
        if lhs.subtitle != rhs.subtitle {
            return false
        }
        
        return true
    }
    
    static var body: Body {
        let title = Child(Text.self)
        let subtitle = Child(Text.self)
        
        return { context in
            let spacing: CGFloat = 0.0
            
            let title = title.update(
                component: Text(
                    text: context.component.title, font: Font.semibold(17.0), color: .white),
                availableSize: context.availableSize,
                transition: context.transition
            )
            
            let subtitle = subtitle.update(
                component: Text(
                    text: context.component.subtitle, font: Font.regular(14.0), color: .white),
                availableSize: context.availableSize,
                transition: context.transition
            )
            
            var size = CGSize(width: max(title.size.width, subtitle.size.width), height: title.size.height + spacing + subtitle.size.height)
            size.width = min(size.width, context.availableSize.width)
            size.height = min(size.height, context.availableSize.height)
            
            context.add(title
                .position(CGPoint(x: size.width / 2.0, y: title.size.height / 2.0))
            )
            context.add(subtitle
                .position(CGPoint(x: size.width / 2.0, y: title.size.height + spacing + subtitle.size.height / 2.0))
            )
            
            return size
        }
    }
}

private final class ToolbarComponent: CombinedComponent {
    let bottomInset: CGFloat
    let sideInset: CGFloat
    let leftItem: AnyComponent<Empty>?
    let rightItem: AnyComponent<Empty>?
    let centerItem: AnyComponent<Empty>?
    
    init(
        bottomInset: CGFloat,
        sideInset: CGFloat,
        leftItem: AnyComponent<Empty>?,
        rightItem: AnyComponent<Empty>?,
        centerItem: AnyComponent<Empty>?
    ) {
        self.bottomInset = bottomInset
        self.sideInset = sideInset
        self.leftItem = leftItem
        self.rightItem = rightItem
        self.centerItem = centerItem
    }
    
    static func ==(lhs: ToolbarComponent, rhs: ToolbarComponent) -> Bool {
        if lhs.bottomInset != rhs.bottomInset {
            return false
        }
        if lhs.sideInset != rhs.sideInset {
            return false
        }
        if lhs.leftItem != rhs.leftItem {
            return false
        }
        if lhs.rightItem != rhs.rightItem {
            return false
        }
        if lhs.centerItem != rhs.centerItem {
            return false
        }
        
        return true
    }
    
    static var body: Body {
        let background = Child(Rectangle.self)
        let leftItem = Child(environment: Empty.self)
        let rightItem = Child(environment: Empty.self)
        let centerItem = Child(environment: Empty.self)
        
        return { context in
            var availableWidth = context.availableSize.width
            let sideInset: CGFloat = 16.0 + context.component.sideInset
            
            let contentHeight: CGFloat = 44.0
            let size = CGSize(width: context.availableSize.width, height: contentHeight + context.component.bottomInset)
            
            let background = background.update(component: Rectangle(color: UIColor(white: 0.0, alpha: 0)), availableSize: CGSize(width: size.width, height: size.height), transition: context.transition)
            
            let leftItem = context.component.leftItem.flatMap { leftItemComponent in
                return leftItem.update(
                    component: leftItemComponent,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
            }
            if let leftItem = leftItem {
                availableWidth -= leftItem.size.width
            }
            
            let rightItem = context.component.rightItem.flatMap { rightItemComponent in
                return rightItem.update(
                    component: rightItemComponent,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
            }
            if let rightItem = rightItem {
                availableWidth -= rightItem.size.width
            }
            
            let centerItem = context.component.centerItem.flatMap { centerItemComponent in
                return centerItem.update(
                    component: centerItemComponent,
                    availableSize: CGSize(width: availableWidth, height: contentHeight),
                    transition: context.transition
                )
            }
            if let centerItem = centerItem {
                availableWidth -= centerItem.size.width
            }
            
            context.add(background
                .position(CGPoint(x: size.width / 2.0, y: size.height / 2.0))
            )
            
            var centerLeftInset = sideInset
            if let leftItem = leftItem {
                context.add(leftItem
                    .position(CGPoint(x: sideInset + leftItem.size.width / 2.0, y: contentHeight / 2.0))
                )
                centerLeftInset += leftItem.size.width + 4.0
            }
            
            var centerRightInset = sideInset
            if let rightItem = rightItem {
                context.add(rightItem
                    .position(CGPoint(x: context.availableSize.width - sideInset - rightItem.size.width / 2.0, y: contentHeight / 2.0))
                )
                centerRightInset += rightItem.size.width + 4.0
            }
            
            let maxCenterInset = max(centerLeftInset, centerRightInset)
            if let centerItem = centerItem {
                context.add(centerItem
                    .position(CGPoint(x: maxCenterInset + (context.availableSize.width - maxCenterInset - maxCenterInset) / 2.0, y: contentHeight / 2.0))
                )
            }
            
            return size
        }
    }
}

private final class ButtonsRowComponent: CombinedComponent {
    let bottomInset: CGFloat
    let sideInset: CGFloat
    let leftItem: AnyComponent<Empty>?
    let rightItem: AnyComponent<Empty>?
    let centerItem: AnyComponent<Empty>?
    
    init(
        bottomInset: CGFloat,
        sideInset: CGFloat,
        leftItem: AnyComponent<Empty>?,
        rightItem: AnyComponent<Empty>?,
        centerItem: AnyComponent<Empty>?
    ) {
        self.bottomInset = bottomInset
        self.sideInset = sideInset
        self.leftItem = leftItem
        self.rightItem = rightItem
        self.centerItem = centerItem
    }
    
    static func ==(lhs: ButtonsRowComponent, rhs: ButtonsRowComponent) -> Bool {
        if lhs.bottomInset != rhs.bottomInset {
            return false
        }
        if lhs.sideInset != rhs.sideInset {
            return false
        }
        if lhs.leftItem != rhs.leftItem {
            return false
        }
        if lhs.rightItem != rhs.rightItem {
            return false
        }
        if lhs.centerItem != rhs.centerItem {
            return false
        }
        
        return true
    }
    
    static var body: Body {
        let leftItem = Child(environment: Empty.self)
        let rightItem = Child(environment: Empty.self)
        let centerItem = Child(environment: Empty.self)
        
        return { context in
            var availableWidth = context.availableSize.width
            let sideInset: CGFloat = 40 + context.component.sideInset
            
            let contentHeight: CGFloat = 80 // 44
            let size = CGSize(width: context.availableSize.width, height: contentHeight + context.component.bottomInset)
            
            let leftItem = context.component.leftItem.flatMap { leftItemComponent in
                return leftItem.update(
                    component: leftItemComponent,
                    availableSize: CGSize(width: 50, height: contentHeight),
                    transition: context.transition
                )
            }
            if let leftItem = leftItem {
                availableWidth -= leftItem.size.width
            }
            
            let rightItem = context.component.rightItem.flatMap { rightItemComponent in
                return rightItem.update(
                    component: rightItemComponent,
                    availableSize: CGSize(width: 50, height: contentHeight),
                    transition: context.transition
                )
            }
            if let rightItem = rightItem {
                availableWidth -= rightItem.size.width
            }
            
            let centerItem = context.component.centerItem.flatMap { centerItemComponent in
                return centerItem.update(
                    component: centerItemComponent,
                    availableSize: CGSize(width: 50, height: contentHeight),
                    transition: context.transition
                )
            }
            if let centerItem = centerItem {
                availableWidth -= centerItem.size.width
            }
            
            var centerLeftInset = sideInset
            if let leftItem = leftItem {
                context.add(leftItem
                    .position(CGPoint(x: sideInset + leftItem.size.width / 2.0, y: contentHeight / 2.0))
                )
                centerLeftInset += leftItem.size.width + 4.0
            }
            
            var centerRightInset = sideInset
            if let rightItem = rightItem {
                context.add(rightItem
                    .position(CGPoint(x: context.availableSize.width - sideInset - rightItem.size.width / 2.0, y: contentHeight / 2.0))
                )
                centerRightInset += rightItem.size.width + 4.0
            }
            
            let maxCenterInset = max(centerLeftInset, centerRightInset)
            if let centerItem = centerItem {
                context.add(centerItem
                    .position(CGPoint(x: maxCenterInset + (context.availableSize.width - maxCenterInset - maxCenterInset) / 2.0, y: contentHeight / 2.0))
                )
            }
            
            return size
        }
    }
}

final class RoundGradientButtonComponent: Component {
    init(gradientColors: [CGColor], icon: String? = nil, image: UIImage? = nil, title: String) {
        self.gradientColors = gradientColors
        self.icon = icon
        self.image = image
        self.title = title
    }
    
    static func == (lhs: RoundGradientButtonComponent, rhs: RoundGradientButtonComponent) -> Bool {
        if lhs.icon != rhs.icon {
            return false
        }
        if lhs.gradientColors != rhs.gradientColors {
            return false
        }
        return true
    }
    
    let gradientColors: [CGColor]
    let icon: String?
    let image: UIImage?
    let title: String
    
    final class View: UIView {
        let gradientLayer = CAGradientLayer()
        let iconView = UIImageView()
        let titleLabel = UILabel()
        
        override init(frame: CGRect = .zero) {
            super.init(frame: frame)
            
            gradientLayer.type = .radial
            gradientLayer.startPoint = .init(x: 1, y: 1)
            gradientLayer.endPoint = .init(x: 0, y: 0)
            
            self.layer.addSublayer(gradientLayer)
            self.addSubview(iconView)
            self.clipsToBounds = false
            
            self.addSubview(titleLabel)
            titleLabel.textAlignment = .center
            iconView.contentMode = .scaleAspectFit
            titleLabel.font = .systemFont(ofSize: 13)
            titleLabel.textColor = .white
        }
        
        required init?(coder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
        
        override func layoutSubviews() {
            super.layoutSubviews()
            titleLabel.invalidateIntrinsicContentSize()
            let heightForIcon = bounds.height - max(titleLabel.intrinsicContentSize.height, 12) - 6
            iconView.frame = .init(x: bounds.midX - heightForIcon / 2, y: 0, width: heightForIcon, height: heightForIcon)
            gradientLayer.masksToBounds = true
            gradientLayer.cornerRadius = min(iconView.frame.width, iconView.frame.height) / 2
            gradientLayer.frame = iconView.frame
            titleLabel.frame = .init(x: 0, y: bounds.height - titleLabel.intrinsicContentSize.height, width: bounds.width, height: titleLabel.intrinsicContentSize.height)
        }
    }
    
    func makeView() -> View {
        View()
    }
    
    func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: Transition) -> CGSize {
        view.iconView.image = image ?? icon.flatMap { UIImage(bundleImageName: $0) }
        view.gradientLayer.colors = gradientColors
        view.titleLabel.text = title
        view.setNeedsLayout()
        return availableSize
    }
}

public final class _MediaStreamComponent: CombinedComponent {
    struct OriginInfo: Equatable {
        var title: String
        var memberCount: Int
    }
    
    public typealias EnvironmentType = ViewControllerComponentContainer.Environment
    
    public let call: PresentationGroupCallImpl
    
    public init(call: PresentationGroupCallImpl) {
        self.call = call
    }
    
    public static func ==(lhs: _MediaStreamComponent, rhs: _MediaStreamComponent) -> Bool {
        if lhs.call !== rhs.call {
            return false
        }
        
        return true
    }
    
    public final class State: ComponentState {
        private let call: PresentationGroupCallImpl
        
        private(set) var hasVideo: Bool = false
        private var stateDisposable: Disposable?
        private var infoDisposable: Disposable?
        private var connectionDisposable: Disposable?
        private var networkStateDisposable: Disposable?
        
        private(set) var originInfo: OriginInfo?
        
        private(set) var displayUI: Bool = true
        var dismissOffset: CGFloat = 0.0
        var initialOffset: CGFloat = 0.0
        // TODO: remove (replaced by isFullscreen)
        var storedIsLandscape: Bool?
        var isFullscreen: Bool = false
        var videoSize: CGSize?
        
        private(set) var canManageCall: Bool = false
        // TODO: also handle pictureInPicturePossible
        let isPictureInPictureSupported: Bool
        
        private(set) var callTitle: String?
        private(set) var recordingStartTimestamp: Int32?
        
        private(set) var peerTitle: String = ""
        private(set) var chatPeer: Peer?
        
        private(set) var isVisibleInHierarchy: Bool = false
        private var isVisibleInHierarchyDisposable: Disposable?
        
        private var scheduledDismissUITimer: SwiftSignalKit.Timer?
        var videoStalled: Bool = false
        
        var videoIsPlayable: Bool {
            !videoStalled && hasVideo
        }
        
        let deactivatePictureInPictureIfVisible = StoredActionSlot(Void.self)
        
        var videoHiddenForPip = false
        /// To update videoHiddenForPip
        var onExpandedFromPictureInPicture: ((State) -> Void)?
        private let infoThrottler = Throttler<Int>.init(duration: 5, queue: .main)

        init(call: PresentationGroupCallImpl) {
            self.call = call
            
            if #available(iOSApplicationExtension 15.0, iOS 15.0, *), AVPictureInPictureController.isPictureInPictureSupported() {
                self.isPictureInPictureSupported = true
            } else {
                self.isPictureInPictureSupported = AVPictureInPictureController.isPictureInPictureSupported()
            }
            
            super.init()
            
            self.stateDisposable = (call.state
            |> map { state -> Bool in
                switch state.networkState {
                case .connected:
                    return true
                default:
                    return false
                }
            }
            |> filter { $0 }
            |> take(1)).start(next: { [weak self] _ in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.hasVideo = true
                strongSelf.updated(transition: .immediate)
            })
            
            self.networkStateDisposable = (call.account.networkState |> deliverOnMainQueue).start(next: { [weak self] state in
                guard let strongSelf = self else { return }
                switch state {
                case .waitingForNetwork, .connecting:
                    print("[NEW] videoStalled")
                    strongSelf.videoStalled = true
                default:
                    strongSelf.videoStalled = !strongSelf.hasVideo
                }
                strongSelf.updated(transition: .immediate)
//                if let strongSelf = self, case .standard(previewing: false) = strongSelf.presentationInterfaceState.mode {
//                    strongSelf.chatTitleView?.networkState = state
//                }
            })
            
            self.connectionDisposable = call.state.start(next: { [weak self] state in
                let prev = self?.videoStalled
                switch state.networkState {
                case .connected:
                    self?.videoStalled = false
                default:
                    print("[ALERT] video stalled")
                    self?.videoStalled = true
                }
                if prev != self?.videoStalled {
                    self?.updated(transition: .immediate)
                }
            })
            
            let callPeer = call.accountContext.engine.data.get(TelegramEngine.EngineData.Item.Peer.Peer(id: call.peerId))
            
            self.infoDisposable = (combineLatest(queue: .mainQueue(), call.state, call.members, callPeer)
            |> deliverOnMainQueue).start(next: { [weak self] state, members, callPeer in
                guard let strongSelf = self, let members = members, let callPeer = callPeer else {
                    return
                }
                
                var updated = false
//                 TODO: remove debug timer
//                Timer.scheduledTimer(withTimeInterval: 0.5, repeats: true) { _ in
                    strongSelf.infoThrottler.publish(members.totalCount /*Int.random(in: 0..<10000000)*/) { [weak strongSelf] latestCount in
                        print(members.totalCount)
                        guard let strongSelf = strongSelf else { return }
                        var updated = false
                        let originInfo = OriginInfo(title: callPeer.debugDisplayTitle, memberCount: latestCount)
                        if strongSelf.originInfo != originInfo {
                            strongSelf.originInfo = originInfo
                            updated = true
                        }    
                        if updated {
                            strongSelf.updated(transition: .immediate)
                        }
                    }
//                }.fire()
                if state.canManageCall != strongSelf.canManageCall {
                    strongSelf.canManageCall = state.canManageCall
                    updated = true
                }
                if strongSelf.peerTitle != callPeer.debugDisplayTitle {
                    strongSelf.peerTitle = callPeer.debugDisplayTitle
                    updated = true
                }
                strongSelf.chatPeer = callPeer._asPeer()
                
                if strongSelf.callTitle != state.title {
                    strongSelf.callTitle = state.title
                    updated = true
                }
                
                if strongSelf.recordingStartTimestamp != state.recordingStartTimestamp {
                    strongSelf.recordingStartTimestamp = state.recordingStartTimestamp
                    updated = true
                }
                
//                let originInfo = OriginInfo(title: callPeer.debugDisplayTitle, memberCount: members.totalCount)
//                if strongSelf.originInfo != originInfo {
//                    strongSelf.originInfo = originInfo
//                    updated = true
//                }
//
                if updated {
                    strongSelf.updated(transition: .immediate)
                }
            })
            
            self.isVisibleInHierarchyDisposable = (call.accountContext.sharedContext.applicationBindings.applicationInForeground
            |> deliverOnMainQueue).start(next: { [weak self] inForeground in
                guard let strongSelf = self else {
                    return
                }
                if strongSelf.isVisibleInHierarchy != inForeground {
                    strongSelf.isVisibleInHierarchy = inForeground
                    strongSelf.updated(transition: .immediate)
                    
                    if inForeground {
                        Queue.mainQueue().after(0.5, {
                            guard let strongSelf = self, strongSelf.isVisibleInHierarchy else {
                                return
                            }
                            
                            strongSelf.deactivatePictureInPictureIfVisible.invoke(Void())
                        })
                    }
                }
            })
        }
        
        deinit {
            self.stateDisposable?.dispose()
            self.infoDisposable?.dispose()
            self.isVisibleInHierarchyDisposable?.dispose()
            self.connectionDisposable?.dispose()
        }
        
        func toggleDisplayUI() {
            self.displayUI = !self.displayUI
            self.updated(transition: Transition(animation: .curve(duration: 0.4, curve: .easeInOut)))
        }
        
        func cancelScheduledDismissUI() {
            self.scheduledDismissUITimer?.invalidate()
            self.scheduledDismissUITimer = nil
        }
        
        func scheduleDismissUI() {
            if self.scheduledDismissUITimer == nil {
                self.scheduledDismissUITimer = SwiftSignalKit.Timer(timeout: 3.0, repeat: false, completion: { [weak self] in
                    guard let strongSelf = self else {
                        return
                    }
                    strongSelf.scheduledDismissUITimer = nil
                    if strongSelf.displayUI {
                        strongSelf.toggleDisplayUI()
                    }
                }, queue: .mainQueue())
                self.scheduledDismissUITimer?.start()
            }
        }
        
        func updateDismissOffset(value: CGFloat, interactive: Bool) {
            self.dismissOffset = value
            if interactive {
                self.updated(transition: .immediate)
            } else {
                self.updated(transition: Transition(animation: .curve(duration: 0.25, curve: .easeInOut)))
            }
        }
    }
    
    public func makeState() -> State {
        return State(call: self.call)
    }
    
    public static var body: Body {
        let background = Child(Rectangle.self)
        let video = Child(MediaStreamVideoComponent.self)
//        let navigationBar = Child(NavigationBarComponent.self)
//        let toolbar = Child(ToolbarComponent.self)
        
        let sheet = Child(StreamSheetComponent.self)
        let fullscreenOverlay = Child(StreamSheetComponent.self)
        
        let activatePictureInPicture = StoredActionSlot(Action<Void>.self)
        let deactivatePictureInPicture = StoredActionSlot(Void.self)
        let moreButtonTag = GenericComponentViewTag()
        let moreAnimationTag = GenericComponentViewTag()
        
        return { context in
            let environment = context.environment[ViewControllerComponentContainer.Environment.self].value
            if environment.isVisible {
            } else {
                context.state.dismissOffset = 0.0
            }
            
            let background = background.update(
                component: Rectangle(color: .black.withAlphaComponent(0.0)),
                availableSize: context.availableSize,
                transition: context.transition
            )
            
            let call = context.component.call
            let state = context.state
            let controller = environment.controller
            //?
            if environment.isVisible {
                state.videoHiddenForPip = false
            }
            context.state.deactivatePictureInPictureIfVisible.connect {
                guard let controller = controller() else {
                    return
                }
                if controller.view.window == nil {
                    return
                }
                state.videoHiddenForPip = false
                state.updated(transition: .easeInOut(duration: 3))
                deactivatePictureInPicture.invoke(Void())
            }
            var isFullscreen = state.isFullscreen
            let isLandscape = context.availableSize.width > context.availableSize.height
            
            if let videoSize = context.state.videoSize {
                // Always fullscreen in landscape
                if /*videoSize.width > videoSize.height &&*/ isLandscape && !isFullscreen {
                    state.isFullscreen = true
                    isFullscreen = true
                } else if videoSize.width > videoSize.height && !isLandscape && isFullscreen {
                    state.isFullscreen = false
                    isFullscreen = false
                }
            }
            
            let videoHeight: CGFloat = context.availableSize.width / 16 * 9
            let bottomPadding = 40 + environment.safeInsets.bottom
            let sheetHeight: CGFloat = isFullscreen ? context.availableSize.height : (44 + videoHeight + 40 + 69 + 16 + 32 + 70 + bottomPadding)
            let isFullyDragged = context.availableSize.height - sheetHeight + state.dismissOffset - context.view.safeAreaInsets.top < 30
            
            var dragOffset = context.state.dismissOffset
            if isFullyDragged {
                dragOffset = max(context.state.dismissOffset, sheetHeight - context.availableSize.height + context.view.safeAreaInsets.top)// sheetHeight - UIScreen.main.bounds.height
            }
            
            let video = video.update(
                component: MediaStreamVideoComponent(
                    call: context.component.call,
                    hasVideo: context.state.hasVideo,
                    isVisible: environment.isVisible && context.state.isVisibleInHierarchy,
                    isAdmin: context.state.canManageCall,
                    peerTitle: context.state.peerTitle,
                    // TODO: find out how to get image
                    peerImage: nil,
                    isFullscreen: isFullscreen,
                    videoLoading: context.state.videoStalled,
                    activatePictureInPicture: activatePictureInPicture,
                    deactivatePictureInPicture: deactivatePictureInPicture,
                    bringBackControllerForPictureInPictureDeactivation: { [weak call] completed in
                        guard let call = call else {
                            completed()
                            return
                        }
                        
                        call.accountContext.sharedContext.mainWindow?.inCallNavigate?()
                        // TODO: bring up sheet
                        completed()
                    },
                    pictureInPictureClosed: { [weak call] in
                        let _ = call?.leave(terminateIfPossible: false)
                    },
                    onVideoSizeRetrieved: { [weak state] size in
                        state?.videoSize = size
                    }
                ),
                availableSize: context.availableSize,
                transition: context.transition
            )// .opacity(state.videoHiddenForPip ? 0 : 1)
            
//            let height = context.availableSize.height
            var navigationRightItems: [AnyComponentWithIdentity<Empty>] = []
//            let contextView = context.view
            if context.state.isPictureInPictureSupported, context.state.videoIsPlayable {
                navigationRightItems.append(AnyComponentWithIdentity(id: "pip", component: AnyComponent(Button(
                    content: AnyComponent(ZStack([
                            AnyComponentWithIdentity(id: "b", component: AnyComponent(Circle(
                                fillColor: .white.withAlphaComponent(0.08),
                                size: CGSize(width: 32.0, height: 32.0)
                            ))),
                            AnyComponentWithIdentity(id: "a", component: AnyComponent(BundleIconComponent(
                                name: "Call/pip",
                                tintColor: .white
                            )))
                        ]
                    )),
                    action: {
                        activatePictureInPicture.invoke(Action {
                            guard let controller = controller() as? MediaStreamComponentController else {
                                return
                            }
                            state.videoHiddenForPip = true
                            
                            controller.dismiss(closing: false, manual: true)
                        })
                    }
                ).minSize(CGSize(width: 44.0, height: 44.0)))))
            }
            var topLeftButton: AnyComponent<Empty>?
            if context.state.canManageCall {
                let whiteColor = UIColor(white: 1.0, alpha: 1.0)
                /*navigationRightItems.append(*/ topLeftButton = //AnyComponentWithIdentity(id: "more", component:
                AnyComponent(Button(
                    content: AnyComponent(ZStack([
                        AnyComponentWithIdentity(id: "b", component: AnyComponent(Circle(
                            fillColor: .white.withAlphaComponent(0.08),
                            size: CGSize(width: 32.0, height: 32.0)
                        ))),
                        AnyComponentWithIdentity(id: "a", component: AnyComponent(LottieAnimationComponent(
                            animation: LottieAnimationComponent.AnimationItem(
                                name: "anim_profilemore",
                                mode: .still(position: .begin)
                            ),
                            colors: [
                                "Point 2.Group 1.Fill 1": whiteColor,
                                "Point 3.Group 1.Fill 1": whiteColor,
                                "Point 1.Group 1.Fill 1": whiteColor
                            ],
                            size: CGSize(width: 32.0, height: 32.0)
                        ).tagged(moreAnimationTag))),
                    ])),
                    action: { [weak call, weak state] in
                        guard let call = call, let state = state else {
                            return
                        }
                        guard let controller = controller() as? MediaStreamComponentController else {
                            return
                        }
                        guard let anchorView = controller.node.hostView.findTaggedView(tag: moreButtonTag) else {
                            return
                        }
                        
                        if let animationView = controller.node.hostView.findTaggedView(tag: moreAnimationTag) as? LottieAnimationComponent.View {
                            animationView.playOnce()
                        }
                        
                        let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }
                        
                        var items: [ContextMenuItem] = []
                        
                        items.append(.action(ContextMenuActionItem(id: nil, text: presentationData.strings.LiveStream_EditTitle, textColor: .primary, textLayout: .singleLine, textFont: .regular, badge: nil, icon: { theme in
                            return generateTintedImage(image: UIImage(bundleImageName: "Chat/Context Menu/Pencil"), color: theme.actionSheet.primaryTextColor)
                        }, action: { [weak call, weak controller, weak state] _, a in
                            guard let call = call, let controller = controller, let state = state, let chatPeer = state.chatPeer else {
                                return
                            }
                            
                            let initialTitle = state.callTitle ?? ""
                            
                            let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }

                            let title: String = presentationData.strings.LiveStream_EditTitle
                            let text: String = presentationData.strings.LiveStream_EditTitleText

                            let editController = voiceChatTitleEditController(sharedContext: call.accountContext.sharedContext, account: call.accountContext.account, forceTheme: defaultDarkPresentationTheme, title: title, text: text, placeholder: EnginePeer(chatPeer).displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder), value: initialTitle, maxLength: 40, apply: { [weak call] title in
                                guard let call = call else {
                                    return
                                }
                                
                                let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }
                                
                                if let title = title, title != initialTitle {
                                    call.updateTitle(title)

                                    let text: String = title.isEmpty ? presentationData.strings.LiveStream_EditTitleRemoveSuccess : presentationData.strings.LiveStream_EditTitleSuccess(title).string

                                    let _ = text
                                    //strongSelf.presentUndoOverlay(content: .voiceChatFlag(text: text), action: { _ in return false })
                                }
                            })
                            controller.present(editController, in: .window(.root))
                            
                            a(.default)
                        })))
                        
                        if let recordingStartTimestamp = state.recordingStartTimestamp {
                            items.append(.custom(VoiceChatRecordingContextItem(timestamp: recordingStartTimestamp, action: { [weak call, weak controller] _, f in
                                f(.dismissWithoutContent)

                                guard let call = call, let controller = controller else {
                                    return
                                }
                                
                                let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }

                                let alertController = textAlertController(context: call.accountContext, forceTheme: defaultDarkPresentationTheme, title: nil, text: presentationData.strings.VoiceChat_StopRecordingTitle, actions: [TextAlertAction(type: .genericAction, title: presentationData.strings.Common_Cancel, action: {}), TextAlertAction(type: .defaultAction, title: presentationData.strings.VoiceChat_StopRecordingStop, action: { [weak call, weak controller] in
                                    guard let call = call, let controller = controller else {
                                        return
                                    }
                                    call.setShouldBeRecording(false, title: nil, videoOrientation: nil)
                                    
                                    let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }
                                    let text = presentationData.strings.LiveStream_RecordingSaved
                                    
                                    let _ = text
                                    let _ = controller
                                    
                                    /*strongSelf.presentUndoOverlay(content: .forward(savedMessages: true, text: text), action: { [weak self] value in
                                        if case .info = value, let strongSelf = self, let navigationController = strongSelf.controller?.navigationController as? NavigationController {
                                            let context = strongSelf.context
                                            strongSelf.controller?.dismiss(completion: {
                                                Queue.mainQueue().justDispatch {
                                                    context.sharedContext.navigateToChatController(NavigateToChatControllerParams(navigationController: navigationController, context: context, chatLocation: .peer(context.account.peerId), keepStack: .always, purposefulAction: {}, peekData: nil))
                                                }
                                            })
                                            
                                            return true
                                        }
                                        return false
                                    })*/
                                })])
                                controller.present(alertController, in: .window(.root))
                            }), false))
                        } else {
                            let text = presentationData.strings.LiveStream_StartRecording
                            items.append(.action(ContextMenuActionItem(text: text, icon: { theme -> UIImage? in
                                return generateStartRecordingIcon(color: theme.actionSheet.primaryTextColor)
                            }, action: { [weak call, weak state, weak controller] _, f in
                                f(.dismissWithoutContent)

                                guard let call = call, let state = state, let _ = state.chatPeer, let controller = controller else {
                                    return
                                }
                                
                                let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }
                                
                                let title: String
                                let text: String
                                let placeholder: String = presentationData.strings.VoiceChat_RecordingTitlePlaceholderVideo
                                
                                title = presentationData.strings.LiveStream_StartRecordingTitle
                                text = presentationData.strings.LiveStream_StartRecordingTextVideo
                                
                                let editController = voiceChatTitleEditController(sharedContext: call.accountContext.sharedContext, account: call.accountContext.account, forceTheme: defaultDarkPresentationTheme, title: title, text: text, placeholder: placeholder, value: nil, maxLength: 40, apply: { [weak call, weak controller] title in
                                    guard let call = call, let controller = controller else {
                                        return
                                    }
                                    
                                    
                                    let presentationData = call.accountContext.sharedContext.currentPresentationData.with { $0 }
                                    
                                    if let title = title {
                                        call.setShouldBeRecording(true, title: title, videoOrientation: false)

                                        let text = presentationData.strings.LiveStream_RecordingStarted
                                        let _ = text

                                        let _ = controller
                                        
                                        call.playTone(.recordingStarted)
                                    }
                                })
                                controller.present(editController, in: .window(.root))
                            })))
                        }
                        
                        let credentialsPromise = Promise<GroupCallStreamCredentials>()
                        credentialsPromise.set(call.accountContext.engine.calls.getGroupCallStreamCredentials(peerId: call.peerId, revokePreviousCredentials: false) |> `catch` { _ -> Signal<GroupCallStreamCredentials, NoError> in return .never() })
                        
                        items.append(.action(ContextMenuActionItem(id: nil, text: presentationData.strings.LiveStream_ViewCredentials, textColor: .primary, textLayout: .singleLine, textFont: .regular, badge: nil, icon: { theme in
                            return generateTintedImage(image: UIImage(bundleImageName: "Chat/Context Menu/Info"), color: theme.contextMenu.primaryColor, backgroundColor: nil)
                        }, action: { [weak call, weak controller] _, a in
                            guard let call = call, let controller = controller else {
                                return
                            }
                            
                            controller.push(CreateExternalMediaStreamScreen(context: call.accountContext, peerId: call.peerId, credentialsPromise: credentialsPromise, mode: .view))
                            
                            a(.default)
                        })))
                        
                        items.append(.action(ContextMenuActionItem(id: nil, text: presentationData.strings.VoiceChat_StopRecordingStop, textColor: .destructive, textLayout: .singleLine, textFont: .regular, badge: nil, icon: { theme in
                            return generateTintedImage(image: UIImage(bundleImageName: "Chat/Context Menu/Clear"), color: theme.contextMenu.destructiveColor, backgroundColor: nil)
                        }, action: { [weak call] _, a in
                            guard let call = call else {
                                return
                            }
                            
                            let _ = call.leave(terminateIfPossible: true).start()
                            
                            a(.default)
                        })))
                        
                        final class ReferenceContentSource: ContextReferenceContentSource {
                            private let sourceView: UIView
                            
                            init(sourceView: UIView) {
                                self.sourceView = sourceView
                            }
                            
                            func transitionInfo() -> ContextControllerReferenceViewInfo? {
                                return ContextControllerReferenceViewInfo(referenceView: self.sourceView, contentAreaInScreenSpace: UIScreen.main.bounds)
                            }
                        }
                        
                        let contextController = ContextController(account: call.accountContext.account, presentationData: presentationData.withUpdated(theme: defaultDarkPresentationTheme), source: .reference(ReferenceContentSource(sourceView: anchorView)), items: .single(ContextController.Items(content: .list(items))), gesture: nil)
                        /*contextController.passthroughTouchEvent = { sourceView, point in
                            guard let strongSelf = self else {
                                return .ignore
                            }

                            let localPoint = strongSelf.view.convert(sourceView.convert(point, to: nil), from: nil)
                            guard let localResult = strongSelf.hitTest(localPoint, with: nil) else {
                                return .dismiss(consume: true, result: nil)
                            }

                            var testView: UIView? = localResult
                            while true {
                                if let testViewValue = testView {
                                    if let node = testViewValue.asyncdisplaykit_node as? PeerInfoHeaderNavigationButton {
                                        node.isUserInteractionEnabled = false
                                        DispatchQueue.main.async {
                                            node.isUserInteractionEnabled = true
                                        }
                                        return .dismiss(consume: false, result: nil)
                                    } else if let node = testViewValue.asyncdisplaykit_node as? PeerInfoVisualMediaPaneNode {
                                        node.brieflyDisableTouchActions()
                                        return .dismiss(consume: false, result: nil)
                                    } else {
                                        testView = testViewValue.superview
                                    }
                                } else {
                                    break
                                }
                            }

                            return .dismiss(consume: true, result: nil)
                        }*/
                        controller.presentInGlobalOverlay(contextController)
                    }
                ).minSize(CGSize(width: 44.0, height: 44.0)).tagged(moreButtonTag))//)//)
            }
            let navigationComponent = NavigationBarComponent(
                topInset: environment.statusBarHeight,
                sideInset: environment.safeInsets.left,
                leftItem: topLeftButton/*AnyComponent(Button(
                    content: AnyComponent(Text(text: environment.strings.Common_Close, font: Font.regular(17.0), color: .white)),
                    action: { [weak call] in
                        let _ = call?.leave(terminateIfPossible: false)
                    })
                )*/,
                rightItems: navigationRightItems,
                centerItem: AnyComponent(StreamTitleComponent(text: state.peerTitle, isRecording: state.recordingStartTimestamp != nil, isActive: context.state.videoIsPlayable))
            )
            
//            let navigationBar = navigationBar.update(
//                component: navigationComponent,
//                availableSize: CGSize(width: context.availableSize.width, height: context.availableSize.height),
//                transition: context.transition
//            )
            
            if context.state.storedIsLandscape != isLandscape {
                context.state.storedIsLandscape = isLandscape
                if isLandscape {
                    context.state.scheduleDismissUI()
                } else {
                    context.state.cancelScheduledDismissUI()
                }
            }
            
            var infoItem: AnyComponent<Empty>?
            if let originInfo = context.state.originInfo {
                let memberCountString: String
                if originInfo.memberCount == 0 {
                    memberCountString = environment.strings.LiveStream_NoViewers
                } else {
                    memberCountString = environment.strings.LiveStream_ViewerCount(Int32(originInfo.memberCount))
                }
                infoItem = AnyComponent(OriginInfoComponent(
                    title: state.callTitle ?? originInfo.title,
                    subtitle: memberCountString
                ))
            }
            let availableSize = context.availableSize
            let safeAreaTop = context.view.safeAreaInsets.top
            context.add(background
                .position(CGPoint(x: context.availableSize.width / 2.0, y: context.availableSize.height / 2.0))
                .gesture(.tap { [weak state] in
                    guard let state = state else {
                        return
                    }
                    state.toggleDisplayUI()
                })
                .gesture(.pan { [weak state] panState in
                    guard let state = state else {
                        return
                    }
                    switch panState {
                    case .began:
                        state.initialOffset = state.dismissOffset
                    case let .updated(offset):
                        state.updateDismissOffset(value: state.initialOffset + offset.y, interactive: true)
                    case let .ended(velocity):
                        // TODO: Dismiss sheet depending on velocity
                        if velocity.y > 200.0 {
                            if state.isFullscreen {
                                state.isFullscreen = false
                                state.updateDismissOffset(value: 0.0, interactive: false)
                                if let controller = controller() as? MediaStreamComponentController {
                                    controller.updateOrientation(orientation: .portrait)
                                }
                            } else {
                                if isFullyDragged || state.initialOffset != 0 {
                                    state.updateDismissOffset(value: 0.0, interactive: false)
                                } else {
                                    let _ = call.leave(terminateIfPossible: false)
                                }
                            }
                            /*activatePictureInPicture.invoke(Action { [weak state] in
                                guard let state = state, let controller = controller() as? MediaStreamComponentController else {
                                    return
                                }
                                state.updateDismissOffset(value: velocity.y < 0 ? -height : height, interactive: false)
                                controller.dismiss(closing: false, manual: true)
                            })*/
                        } else {
                            if isFullyDragged {
                                state.updateDismissOffset(value: sheetHeight - availableSize.height + safeAreaTop, interactive: false)
                            } else {
                                if velocity.y < -200 {
                                    // Expand
                                    state.updateDismissOffset(value: sheetHeight - availableSize.height + safeAreaTop, interactive: false)
                                } else {
                                    state.updateDismissOffset(value: 0.0, interactive: false)
                                }
                            }
                        }
                    }
                })
            )
//            var bottomComponent: AnyComponent<Empty>?
//            var fullScreenToolbarComponent: AnyComponent<Empty>?
            
            if !isFullscreen {
                let bottomComponent = AnyComponent(ButtonsRowComponent(
                    bottomInset: environment.safeInsets.bottom,
                    sideInset: environment.safeInsets.left,
                    leftItem: AnyComponent(Button(
                        content: AnyComponent(RoundGradientButtonComponent(// BundleIconComponent(
                            gradientColors: [UIColor(red: 0.18, green: 0.17, blue: 0.30, alpha: 1).cgColor, UIColor(red: 0.17, green: 0.16, blue: 0.30, alpha: 1).cgColor],
                            image: generateTintedImage(image: UIImage(bundleImageName: "Call/CallShareButton"), color: .white),// "Chat/Input/Accessory Panels/MessageSelectionForward"
                            // TODO: localize:
                            title: "share")),
                        action: {
                            guard let controller = controller() as? MediaStreamComponentController else {
                                return
                            }
                            controller.presentShare()
                        }
                    ).minSize(CGSize(width: 65, height: 80))),
                    // TODO: disable button instead of hiding
                    rightItem: AnyComponent(Button(
                        content: AnyComponent(RoundGradientButtonComponent(
                            gradientColors: [UIColor(red: 0.44, green: 0.18, blue: 0.22, alpha: 1).cgColor, UIColor(red: 0.44, green: 0.18, blue: 0.22, alpha: 1).cgColor],
                            image: generateImage(CGSize(width: 44.0, height: 44), opaque: false, rotatedContext: { size, context in
                                context.translateBy(x: size.width / 2, y: size.height / 2)
                                context.scaleBy(x: 0.4, y: 0.4)
                                context.translateBy(x: -size.width / 2, y: -size.height / 2)
                                let imageColor = UIColor.white
                                let bounds = CGRect(origin: CGPoint(), size: size)
                                context.clear(bounds)
                                let lineWidth: CGFloat = size.width / 7
                                context.setLineWidth(lineWidth - UIScreenPixel)
                                context.setLineCap(.round)
                                context.setStrokeColor(imageColor.cgColor)
                                
                                context.move(to: CGPoint(x: lineWidth / 2 + UIScreenPixel, y: lineWidth / 2 + UIScreenPixel))
                                context.addLine(to: CGPoint(x: size.width - lineWidth / 2 - UIScreenPixel, y: size.height - lineWidth / 2 - UIScreenPixel))
                                context.strokePath()
                                
                                context.move(to: CGPoint(x: size.width - lineWidth / 2 - UIScreenPixel, y: lineWidth / 2 + UIScreenPixel))
                                context.addLine(to: CGPoint(x: lineWidth / 2 + UIScreenPixel, y: size.height - lineWidth / 2 - UIScreenPixel))
                                context.strokePath()
                            }),
                            title: "leave"
                        )),
                        action: { [weak call] in
                            let _ = call?.leave(terminateIfPossible: false)
                        }
                    ).minSize(CGSize(width: 44.0, height: 44.0))),
                    centerItem: AnyComponent(Button(
                        content: AnyComponent(RoundGradientButtonComponent(
                            gradientColors: [UIColor(red: 0.23, green: 0.17, blue: 0.29, alpha: 1).cgColor, UIColor(red: 0.21, green: 0.16, blue: 0.29, alpha: 1).cgColor],
                            image: generateImage(CGSize(width: 44, height: 44), opaque: false, rotatedContext: { size, context in
                                
                                let imageColor = UIColor.white
                                let bounds = CGRect(origin: CGPoint(), size: size)
                                context.clear(bounds)
                                
                                context.setLineWidth(2.4 - UIScreenPixel)
                                context.setLineCap(.round)
                                context.setStrokeColor(imageColor.cgColor)
//                                context.setLineJoin(.round)
                                
                                let lineSide = size.width / 5
                                let centerOffset = size.width / 20
                                context.move(to: CGPoint(x: size.width / 2 + lineSide, y: size.height / 2 - centerOffset / 2))
                                context.addLine(to: CGPoint(x: size.width / 2 + lineSide, y: size.height / 2 - lineSide))
                                context.addLine(to: CGPoint(x: size.width / 2 + centerOffset / 2, y: size.height / 2 - lineSide))
                                context.move(to: CGPoint(x: size.width / 2 + lineSide, y: size.height / 2 - lineSide))
                                context.addLine(to: CGPoint(x: size.width / 2 + centerOffset, y: size.height / 2 - centerOffset))
                                context.strokePath()
                                
                                context.move(to: CGPoint(x: size.width / 2 - lineSide, y: size.height / 2 + centerOffset / 2))
                                context.addLine(to: CGPoint(x: size.width / 2 - lineSide, y: size.height / 2 + lineSide))
                                context.addLine(to: CGPoint(x: size.width / 2 - centerOffset / 2, y: size.height / 2 + lineSide))
                                context.move(to: CGPoint(x: size.width / 2 - lineSide, y: size.height / 2 + lineSide))
                                context.addLine(to: CGPoint(x: size.width / 2 - centerOffset, y: size.height / 2 + centerOffset))
                                context.strokePath()
                            }),
                            title: "expand"
                        )),
                        action: {
                            guard state.videoIsPlayable else {
                                state.isFullscreen = false 
                                return
                            }
                            if let controller = controller() as? MediaStreamComponentController {
                                guard let size = state.videoSize else { return }
                                state.isFullscreen.toggle()
                                if state.isFullscreen {
                                    if size.width > size.height {
                                        controller.updateOrientation(orientation: .landscapeRight)
                                    } else {
                                        controller.updateOrientation(orientation: .portrait)
                                        // TODO: Update to portrait when open from landscape(?)
                                    }
                                } else {
                                    // TODO: Check and respect current device orientation
                                    controller.updateOrientation(orientation: .portrait)
                                }
                                //                            controller.updateOrientation(orientation: isLandscape ? .portrait : .landscapeRight)
                            }
                        }
                    ).minSize(CGSize(width: 44.0, height: 44.0)))
                ))
                
                let sheet = sheet.update(
                    component: StreamSheetComponent(
                        topComponent: AnyComponent(navigationComponent),
                        bottomButtonsRow: bottomComponent,
                        topOffset: context.availableSize.height - sheetHeight + dragOffset,
                        sheetHeight: max(sheetHeight - dragOffset, sheetHeight),
                        backgroundColor: isFullscreen ? .clear : (isFullyDragged ? fullscreenBackgroundColor : panelBackgroundColor),
                        bottomPadding: bottomPadding,
                        participantsCount: context.state.originInfo?.memberCount ?? 0, // Int.random(in: 0...999998)// [0, 5, 15, 16, 95, 100, 16042, 942539].randomElement()!
                           //
                        isFullyExtended: isFullyDragged,
                        deviceCornerRadius: deviceCornerRadius ?? 0
                    ),
                    availableSize: context.availableSize,
                    transition: context.transition
                )
                
                // TODO: calculate (although not necessary currently)
                let sheetOffset: CGFloat = context.availableSize.height - sheetHeight + dragOffset
                let sheetPosition = sheetOffset + sheetHeight / 2
                // Sheet underneath the video when in sheet
//                if !isFullscreen {
                    // TODO: work with sheet here
                    context.add(sheet
                        .position(.init(x: context.availableSize.width / 2.0, y: /*isFullscreen ?*/ context.availableSize.height / 2)) //: sheetPosition))
                    )
//                }
                let videoPos: CGFloat
                
                if isFullscreen {
                    videoPos = context.availableSize.height / 2 + dragOffset
                } else {
                    videoPos = sheetPosition - sheetHeight / 2 + videoHeight / 2 + 50
                }
                context.add(video
                    .position(CGPoint(x: context.availableSize.width / 2.0, y: videoPos)/*sheetPosition + videoHeight / 2 + 50 - context.availableSize.height / 2*/)// context.availableSize.height / 2.0 + context.state.dismissOffset))
                )
            } else {
                context.add(video
                    .position(CGPoint(x: context.availableSize.width / 2.0, y: context.availableSize.height / 2 + dragOffset)
                ))
            }
            
            if isFullscreen {
                let fullScreenToolbarComponent = AnyComponent(ToolbarComponent(
                    bottomInset: environment.safeInsets.bottom,
                    sideInset: environment.safeInsets.left,
                    leftItem: AnyComponent(Button(
                        content: AnyComponent(BundleIconComponent(
                            name: "Chat/Input/Accessory Panels/MessageSelectionForward",
                            tintColor: .white
                        )),
                        action: {
                            guard let controller = controller() as? MediaStreamComponentController else {
                                return
                            }
                            controller.presentShare()
                        }
                    ).minSize(CGSize(width: 64.0, height: 80))),
                    // TODO: disable button instead of hiding
                    rightItem: state.hasVideo ? AnyComponent(Button(
                        content: AnyComponent(BundleIconComponent(
                            name: isFullscreen ? "Media Gallery/Minimize" : "Media Gallery/Fullscreen",
                            tintColor: .white
                        )),
                        action: {
                            if let controller = controller() as? MediaStreamComponentController {
                                guard let size = state.videoSize else { return }
                                state.isFullscreen.toggle()
                                if state.isFullscreen {
                                    if size.width > size.height {
                                        controller.updateOrientation(orientation: .landscapeRight)
                                    } else {
                                        controller.updateOrientation(orientation: .portrait)
                                        // TODO: Update to portrait when open from landscape(?)
                                    }
                                } else {
                                    // TODO: Check and respect current device orientation
                                    controller.updateOrientation(orientation: .portrait)
                                }
    //                            controller.updateOrientation(orientation: isLandscape ? .portrait : .landscapeRight)
                            }
                        }
                    ).minSize(CGSize(width: 64.0, height: 80))) : nil,
                    centerItem: infoItem
                ))
                let fullScreenOverlayComponent = fullscreenOverlay.update(
                    component: StreamSheetComponent(
                        topComponent: AnyComponent(navigationComponent),
                        bottomButtonsRow: fullScreenToolbarComponent,
                        topOffset: context.availableSize.height - sheetHeight + context.state.dismissOffset,
                        sheetHeight: max(sheetHeight - context.state.dismissOffset, sheetHeight),
                        backgroundColor: isFullscreen ? .clear : (isFullyDragged ? fullscreenBackgroundColor : panelBackgroundColor),
                        bottomPadding: 12,
                        participantsCount: -1, // context.state.originInfo?.memberCount ?? 0
                        isFullyExtended: isFullyDragged,
                        deviceCornerRadius: deviceCornerRadius ?? 0
                    ),
                    availableSize: context.availableSize,
                    transition: context.transition
                )
                context.add(fullScreenOverlayComponent
                    .position(.init(x: context.availableSize.width / 2.0, y: context.availableSize.height / 2))
                    .opacity(state.displayUI ? 1 : 0)
                )
            }
            
//            context.add(navigationBar
//                .position(CGPoint(x: context.availableSize.width / 2.0, y: navigationBar.size.height / 2.0))
//                .opacity(context.state.displayUI ? 1.0 : 0.0)
//            )
            
//            context.add(toolbar
//                .position(CGPoint(x: context.availableSize.width / 2.0, y: context.availableSize.height - toolbar.size.height / 2.0))
//                .opacity(context.state.displayUI ? 1.0 : 0.0)
//            )
            
            return context.availableSize
        }
    }
}

// TODO: pass to component properly
var deviceCornerRadius: CGFloat? = nil

public final class _MediaStreamComponentController: ViewControllerComponentContainer, VoiceChatController {
    private let context: AccountContext
    public let call: PresentationGroupCall
    public private(set) var currentOverlayController: VoiceChatOverlayController? = nil
    public var parentNavigationController: NavigationController?
    
    public var onViewDidAppear: (() -> Void)?
    public var onViewDidDisappear: (() -> Void)?
    
    private var initialOrientation: UIInterfaceOrientation?
    
    private let inviteLinksPromise = Promise<GroupCallInviteLinks?>(nil)
    
    public convenience init(sharedContext: SharedAccountContext, accountContext: AccountContext, call: PresentationGroupCall) {
        self.init(call: call)
    }
    
    public init(call: PresentationGroupCall) {
        self.context = call.accountContext
        self.call = call
        
        super.init(context: call.accountContext, component: MediaStreamComponent(call: call as! PresentationGroupCallImpl), navigationBarAppearance: .none)
        
        self.statusBar.statusBarStyle = .White
        self.view.disablesInteractiveModalDismiss = true
        
        self.inviteLinksPromise.set(.single(nil)
        |> then(call.inviteLinks))
    }
    
    required public init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override public func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        
        DispatchQueue.main.async {
            self.onViewDidAppear?()
        }
        
        if let view = self.node.hostView.findTaggedView(tag: MediaStreamVideoComponent.View.Tag()) as? MediaStreamVideoComponent.View {
            view.expandFromPictureInPicture()
        }
        
        if let validLayout = self.validLayout {
            self.view.clipsToBounds = true
            
            // TODO: pass to component properly
            deviceCornerRadius = validLayout.deviceMetrics.screenCornerRadius - 1// 0.5
//            self.view.layer.cornerRadius = validLayout.deviceMetrics.screenCornerRadius
//            if #available(iOS 13.0, *) {
//                self.view.layer.cornerCurve = .continuous
//            }
            
            self.view.layer.animatePosition(from: CGPoint(x: self.view.frame.center.x, y: self.view.bounds.maxY + self.view.bounds.height / 2), to: self.view.center, duration: 0.3, timingFunction: kCAMediaTimingFunctionSpring, completion: { _ in // [weak self] _ in
//                self?.view.layer.cornerRadius = 0.0
            })
//            self.view.layer.animateScale(from: 0.001, to: 1.0, duration: 0.3, timingFunction: kCAMediaTimingFunctionSpring)
        }
        
        self.view.layer.allowsGroupOpacity = true
        self.view.layer.animateAlpha(from: 1.0, to: 1.0, duration: 0.2, completion: { [weak self] _ in
            guard let strongSelf = self else {
                return
            }
            strongSelf.view.layer.allowsGroupOpacity = false
        })
        self.backgroundDimView.layer.animateAlpha(from: 0, to: 1, duration: 0.3)
        if backgroundDimView.superview == nil {
            guard let superview = view.superview else { return }
            superview.insertSubview(backgroundDimView, belowSubview: view)
        }
        // self.view.backgroundColor = .cyan
    }
    
    override public func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        
        DispatchQueue.main.async {
            self.onViewDidDisappear?()
        }
        
//        if let initialOrientation = self.initialOrientation {
//            self.initialOrientation = nil
//            self.call.accountContext.sharedContext.applicationBindings.forceOrientation(initialOrientation)
//        }
    }
    
    override public func viewDidLoad() {
        super.viewDidLoad()
//        view.insertSubview(backgroundDimView, at: 0)
        // TODO: replace with actual color
        backgroundDimView.backgroundColor = .black.withAlphaComponent(0.3)
        self.view.clipsToBounds = false
    }
    
    override public func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
    }
    
    override public func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        backgroundDimView.frame = .init(x: 0, y: -view.bounds.height * 3, width: view.bounds.width, height: view.bounds.height * 4)
    }
    
    public func dismiss(closing: Bool, manual: Bool) {
        self.dismiss(completion: nil)
    }
    
    let backgroundDimView = UIView()
    
    override public func dismiss(completion: (() -> Void)? = nil) {
        self.view.layer.allowsGroupOpacity = true
        self.view.layer.animateAlpha(from: 1.0, to: 1.0, duration: 0.25, removeOnCompletion: false, completion: { [weak self] _ in
            guard let strongSelf = self else {
                completion?()
                return
            }
            strongSelf.view.layer.allowsGroupOpacity = false
            strongSelf.dismissImpl(completion: completion)
        })
        self.backgroundDimView.layer.animateAlpha(from: 1.0, to: 0, duration: 0.3, removeOnCompletion: false)
        // if let validLayout = self.validLayout {
          //  self.view.clipsToBounds = true
            // self.view.layer.cornerRadius = validLayout.deviceMetrics.screenCornerRadius
            // if #available(iOS 13.0, *) {
            //     self.view.layer.cornerCurve = .continuous
            // }
            
        self.view.layer.animatePosition(from: self.view.center, to: CGPoint(x: self.view.center.x, y: self.view.bounds.maxY + self.view.bounds.height / 2), duration: 0.4, /*timingFunction: kCAMediaTimingFunctionSpring, */completion: { _ in
             })
            // self.view.layer.animateScale(from: 1.0, to: 0.001, duration: 0.3, timingFunction: kCAMediaTimingFunctionSpring)
        // }
    }
    
    private func dismissImpl(completion: (() -> Void)? = nil) {
        super.dismiss(completion: completion)
    }
    
    func updateOrientation(orientation: UIInterfaceOrientation) {
        if self.initialOrientation == nil {
            self.initialOrientation = orientation == .portrait ? .landscapeRight : .portrait
        } else if self.initialOrientation == orientation {
            self.initialOrientation = nil
        }
        self.call.accountContext.sharedContext.applicationBindings.forceOrientation(orientation)
    }
    
    func presentShare() {
        let _ = (self.inviteLinksPromise.get()
        |> take(1)
        |> deliverOnMainQueue).start(next: { [weak self] inviteLinks in
            guard let strongSelf = self else {
                return
            }
            
            let _ = (strongSelf.context.engine.data.get(
                TelegramEngine.EngineData.Item.Peer.Peer(id: strongSelf.call.peerId),
                TelegramEngine.EngineData.Item.Peer.ExportedInvitation(id: strongSelf.call.peerId)
            )
            |> map { peer, exportedInvitation -> GroupCallInviteLinks? in
                if let inviteLinks = inviteLinks {
                    return inviteLinks
                } else if let peer = peer, let addressName = peer.addressName, !addressName.isEmpty {
                    return GroupCallInviteLinks(listenerLink: "https://t.me/\(addressName)?voicechat", speakerLink: nil)
                } else if let link = exportedInvitation?.link {
                    return GroupCallInviteLinks(listenerLink: link, speakerLink: nil)
                }
                return nil
            }
            |> deliverOnMainQueue).start(next: { links in
                guard let strongSelf = self else {
                    return
                }
                
                if let links = links {
                    strongSelf.presentShare(links: links)
                }
            })
        })
    }
        
    func presentShare(links inviteLinks: GroupCallInviteLinks) {
        let formatSendTitle: (String) -> String = { string in
            var string = string
            if string.contains("[") && string.contains("]") {
                if let startIndex = string.firstIndex(of: "["), let endIndex = string.firstIndex(of: "]") {
                    string.removeSubrange(startIndex ... endIndex)
                }
            } else {
                string = string.trimmingCharacters(in: CharacterSet(charactersIn: "0123456789-,."))
            }
            return string
        }
        let _ = formatSendTitle
        
        let _ = (combineLatest(queue: .mainQueue(), self.context.account.postbox.loadedPeerWithId(self.call.peerId), self.call.state |> take(1))
        |> deliverOnMainQueue).start(next: { [weak self] peer, callState in
            if let strongSelf = self {
                var inviteLinks = inviteLinks
                
                if let peer = peer as? TelegramChannel, case .group = peer.info, !peer.flags.contains(.isGigagroup), !(peer.addressName ?? "").isEmpty, let defaultParticipantMuteState = callState.defaultParticipantMuteState {
                    let isMuted = defaultParticipantMuteState == .muted
                    
                    if !isMuted {
                        inviteLinks = GroupCallInviteLinks(listenerLink: inviteLinks.listenerLink, speakerLink: nil)
                    }
                }
                
                let presentationData = strongSelf.context.sharedContext.currentPresentationData.with { $0 }
                
                var segmentedValues: [ShareControllerSegmentedValue]?
                segmentedValues = nil
                let shareController = ShareController(context: strongSelf.context, subject: .url(inviteLinks.listenerLink), segmentedValues: segmentedValues, forceTheme: defaultDarkPresentationTheme, forcedActionTitle: presentationData.strings.VoiceChat_CopyInviteLink)
                shareController.completed = { [weak self] peerIds in
                    if let strongSelf = self {
                        let _ = (strongSelf.context.engine.data.get(
                            EngineDataList(
                                peerIds.map(TelegramEngine.EngineData.Item.Peer.Peer.init)
                            )
                        )
                        |> deliverOnMainQueue).start(next: { [weak self] peerList in
                            if let strongSelf = self {
                                let peers = peerList.compactMap { $0 }
                                let presentationData = strongSelf.context.sharedContext.currentPresentationData.with { $0 }
                                
                                let text: String
                                var isSavedMessages = false
                                if peers.count == 1, let peer = peers.first {
                                    isSavedMessages = peer.id == strongSelf.context.account.peerId
                                    let peerName = peer.id == strongSelf.context.account.peerId ? presentationData.strings.DialogList_SavedMessages : peer.displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder)
                                    text = presentationData.strings.VoiceChat_ForwardTooltip_Chat(peerName).string
                                } else if peers.count == 2, let firstPeer = peers.first, let secondPeer = peers.last {
                                    let firstPeerName = firstPeer.id == strongSelf.context.account.peerId ? presentationData.strings.DialogList_SavedMessages : firstPeer.displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder)
                                    let secondPeerName = secondPeer.id == strongSelf.context.account.peerId ? presentationData.strings.DialogList_SavedMessages : secondPeer.displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder)
                                    text = presentationData.strings.VoiceChat_ForwardTooltip_TwoChats(firstPeerName, secondPeerName).string
                                } else if let peer = peers.first {
                                    let peerName = peer.displayTitle(strings: presentationData.strings, displayOrder: presentationData.nameDisplayOrder)
                                    text = presentationData.strings.VoiceChat_ForwardTooltip_ManyChats(peerName, "\(peers.count - 1)").string
                                } else {
                                    text = ""
                                }
                                
                                strongSelf.present(UndoOverlayController(presentationData: presentationData, content: .forward(savedMessages: isSavedMessages, text: text), elevatedLayout: false, animateInAsReplacement: true, action: { _ in return false }), in: .current)
                            }
                        })
                    }
                }
                shareController.actionCompleted = {
                    if let strongSelf = self {
                        let presentationData = strongSelf.context.sharedContext.currentPresentationData.with { $0 }
                        strongSelf.present(UndoOverlayController(presentationData: presentationData, content: .linkCopied(text: presentationData.strings.VoiceChat_InviteLinkCopiedText), elevatedLayout: false, animateInAsReplacement: false, action: { _ in return false }), in: .window(.root))
                    }
                }
                strongSelf.present(shareController, in: .window(.root))
            }
        })
    }
}

public typealias MediaStreamComponent = _MediaStreamComponent
public typealias MediaStreamComponentController = _MediaStreamComponentController

public final class Throttler<T: Hashable> {
    public var duration: TimeInterval = 0.25
    public var queue: DispatchQueue = .main
    public var isEnabled: Bool { duration > 0 }
    
    private var isThrottling: Bool = false
    private var lastValue: T?
    private var accumulator = Set<T>()
    private var lastCompletedValue: T?
    
    public init(duration: TimeInterval = 0.25, queue: DispatchQueue = .main) {
        self.duration = duration
        self.queue = queue
    }
    
    public func publish(_ value: T, includingLatest: Bool = false, using completion: ((T) -> Void)?) {
        accumulator.insert(value)
        
        if !isThrottling {
            isThrottling = true
            lastValue = nil
            queue.async {
                completion?(value)
                self.lastCompletedValue = value
            }
        } else {
            lastValue = value
        }
        
        if lastValue == nil {
            queue.asyncAfter(deadline: .now() + duration) { [self] in
                accumulator.removeAll()
                // TODO: quick fix, replace with timer
                queue.asyncAfter(deadline: .now() + duration) { [self] in
                    isThrottling = false
                }
                
                guard
                    let lastValue = lastValue,
                    lastCompletedValue != lastValue || includingLatest
                else { return }
                
                accumulator.insert(lastValue)
                self.lastValue = nil
                completion?(lastValue)
                lastCompletedValue = lastValue
            }
        }
    }
    
    public func cancelCurrent() {
        lastValue = nil
        isThrottling = false
        accumulator.removeAll()
    }
    
    public func canEmit(_ value: T) -> Bool {
        !accumulator.contains(value)
    }
}

public extension Throttler where T == Bool {
    func throttle(includingLatest: Bool = false, _ completion: ((T) -> Void)?) {
        publish(true, includingLatest: includingLatest, using: completion)
    }
}