import Foundation
import UIKit
import AsyncDisplayKit
import Display
import TelegramCore
import Postbox
import SwiftSignalKit
import TelegramPresentationData
import UniversalMediaPlayer
import AppBundle
import ContextUI
import AnimationUI
import ManagedAnimationNode
import ChatPresentationInterfaceState
import ChatSendButtonRadialStatusNode
import AudioWaveformNode
import ChatInputPanelNode

extension AudioWaveformNode: CustomMediaPlayerScrubbingForegroundNode {
}

final class ChatRecordingPreviewInputPanelNode: ChatInputPanelNode {
    let deleteButton: HighlightableButtonNode
    let binNode: AnimationNode
    let sendButton: HighlightTrackingButtonNode
    private var sendButtonRadialStatusNode: ChatSendButtonRadialStatusNode?
    let playButton: HighlightableButtonNode
    private let playPauseIconNode: PlayPauseIconNode
    private let waveformButton: ASButtonNode
    let waveformBackgroundNode: ASImageNode
    
    private let waveformNode: AudioWaveformNode
    private let waveformForegroundNode: AudioWaveformNode
    let waveformScubberNode: MediaPlayerScrubbingNode
    
    private var presentationInterfaceState: ChatPresentationInterfaceState?
    
    private var mediaPlayer: MediaPlayer?
    let durationLabel: MediaPlayerTimeTextNode
    
    private let statusDisposable = MetaDisposable()
    
    private(set) var gestureRecognizer: ContextGesture?
    
    init(theme: PresentationTheme) {
        self.deleteButton = HighlightableButtonNode()
        self.deleteButton.displaysAsynchronously = false
        
        self.binNode = AnimationNode(
            animation: "BinBlue",
            colors: [
                "Cap11.Cap2.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Bin 5.Bin.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Cap12.Cap1.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Line15.Line1.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Line13.Line3.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Line14.Line2.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
                "Line13.Обводка 1": theme.chat.inputPanel.panelControlAccentColor,
            ]
        )
        
        self.sendButton = HighlightTrackingButtonNode()
        self.sendButton.displaysAsynchronously = false
        self.sendButton.setImage(PresentationResourcesChat.chatInputPanelSendButtonImage(theme), for: [])
        
        self.waveformBackgroundNode = ASImageNode()
        self.waveformBackgroundNode.isLayerBacked = true
        self.waveformBackgroundNode.displaysAsynchronously = false
        self.waveformBackgroundNode.displayWithoutProcessing = true
        self.waveformBackgroundNode.image = generateStretchableFilledCircleImage(diameter: 33.0, color: theme.chat.inputPanel.actionControlFillColor)
        
        self.playButton = HighlightableButtonNode()
        self.playButton.displaysAsynchronously = false
        
        self.playPauseIconNode = PlayPauseIconNode()
        self.playPauseIconNode.enqueueState(.play, animated: false)
        self.playPauseIconNode.customColor = theme.chat.inputPanel.actionControlForegroundColor
        
        self.waveformButton = ASButtonNode()
        self.waveformButton.accessibilityTraits.insert(.startsMediaSession)
        
        self.waveformNode = AudioWaveformNode()
        self.waveformNode.isLayerBacked = true
        self.waveformForegroundNode = AudioWaveformNode()
        self.waveformForegroundNode.isLayerBacked = true
        
        self.waveformScubberNode = MediaPlayerScrubbingNode(content: .custom(backgroundNode: self.waveformNode, foregroundContentNode: self.waveformForegroundNode))
        
        self.durationLabel = MediaPlayerTimeTextNode(textColor: theme.chat.inputPanel.actionControlForegroundColor)
        self.durationLabel.alignment = .right
        self.durationLabel.mode = .normal
        
        super.init()
        
        self.addSubnode(self.deleteButton)
        self.deleteButton.addSubnode(self.binNode)
        self.addSubnode(self.waveformBackgroundNode)
        self.addSubnode(self.sendButton)
        self.addSubnode(self.waveformScubberNode)
        self.addSubnode(self.playButton)
        self.addSubnode(self.durationLabel)
        self.addSubnode(self.waveformButton)
        self.playButton.addSubnode(self.playPauseIconNode)
        
        self.sendButton.highligthedChanged = { [weak self] highlighted in
            if let strongSelf = self {
                if highlighted {
                    strongSelf.sendButton.layer.animateScale(from: 1.0, to: 0.75, duration: 0.4, removeOnCompletion: false)
                } else if let presentationLayer = strongSelf.sendButton.layer.presentation() {
                    strongSelf.sendButton.layer.animateScale(from: CGFloat((presentationLayer.value(forKeyPath: "transform.scale.y") as? NSNumber)?.floatValue ?? 1.0), to: 1.0, duration: 0.25, removeOnCompletion: false)
                }
            }
        }
        
        self.deleteButton.addTarget(self, action: #selector(self.deletePressed), forControlEvents: [.touchUpInside])
        self.sendButton.addTarget(self, action: #selector(self.sendPressed), forControlEvents: [.touchUpInside])
        
        self.waveformButton.addTarget(self, action: #selector(self.waveformPressed), forControlEvents: .touchUpInside)
    }
    
    deinit {
        self.mediaPlayer?.pause()
        self.statusDisposable.dispose()
    }
    
    override func didLoad() {
        super.didLoad()
        
        let gestureRecognizer = ContextGesture(target: nil, action: nil)
        self.sendButton.view.addGestureRecognizer(gestureRecognizer)
        self.gestureRecognizer = gestureRecognizer
        gestureRecognizer.activated = { [weak self] gesture, _ in
            guard let strongSelf = self else {
                return
            }
            strongSelf.interfaceInteraction?.displaySendMessageOptions(strongSelf.sendButton, gesture)
        }
    }
    
    override func updateLayout(width: CGFloat, leftInset: CGFloat, rightInset: CGFloat, bottomInset: CGFloat, additionalSideInsets: UIEdgeInsets, maxHeight: CGFloat, isSecondary: Bool, transition: ContainedViewLayoutTransition, interfaceState: ChatPresentationInterfaceState, metrics: LayoutMetrics, isMediaInputExpanded: Bool) -> CGFloat {
        if self.presentationInterfaceState != interfaceState {
            var updateWaveform = false
            if self.presentationInterfaceState?.recordedMediaPreview != interfaceState.recordedMediaPreview {
                updateWaveform = true
            }
            if self.presentationInterfaceState?.strings !== interfaceState.strings {
                self.deleteButton.accessibilityLabel = interfaceState.strings.VoiceOver_MessageContextDelete
                self.sendButton.accessibilityLabel = interfaceState.strings.VoiceOver_MessageContextSend
                self.waveformButton.accessibilityLabel = interfaceState.strings.VoiceOver_Chat_RecordPreviewVoiceMessage
            }
            self.presentationInterfaceState = interfaceState
            
            if let recordedMediaPreview = interfaceState.recordedMediaPreview, updateWaveform {
                self.waveformNode.setup(color: interfaceState.theme.chat.inputPanel.actionControlForegroundColor.withAlphaComponent(0.5), gravity: .center, waveform: recordedMediaPreview.waveform)
                self.waveformForegroundNode.setup(color: interfaceState.theme.chat.inputPanel.actionControlForegroundColor, gravity: .center, waveform: recordedMediaPreview.waveform)
                
                if self.mediaPlayer != nil {
                    self.mediaPlayer?.pause()
                }
                if let context = self.context {
                    let mediaManager = context.sharedContext.mediaManager
                    let mediaPlayer = MediaPlayer(audioSessionManager: mediaManager.audioSession, postbox: context.account.postbox, userLocation: .other, userContentType: .audio, resourceReference: .standalone(resource: recordedMediaPreview.resource), streamable: .none, video: false, preferSoftwareDecoding: false, enableSound: true, fetchAutomatically: true)
                    mediaPlayer.actionAtEnd = .action { [weak mediaPlayer] in
                        mediaPlayer?.seek(timestamp: 0.0)
                    }
                    self.mediaPlayer = mediaPlayer
                    self.durationLabel.defaultDuration = Double(recordedMediaPreview.duration)
                    self.durationLabel.status = mediaPlayer.status
                    self.waveformScubberNode.status = mediaPlayer.status
                    self.statusDisposable.set((mediaPlayer.status
                        |> deliverOnMainQueue).startStrict(next: { [weak self] status in
                        if let strongSelf = self {
                            switch status.status {
                                case .playing, .buffering(_, true, _, _):
                                    strongSelf.playPauseIconNode.enqueueState(.pause, animated: true)
                                default:
                                    strongSelf.playPauseIconNode.enqueueState(.play, animated: true)
                            }
                        }
                    }))
                }
            }
        }
        
        let panelHeight = defaultHeight(metrics: metrics)
        
        transition.updateFrame(node: self.deleteButton, frame: CGRect(origin: CGPoint(x: leftInset + 2.0 - UIScreenPixel, y: 1), size: CGSize(width: 40.0, height: 40)))
        transition.updateFrame(node: self.sendButton, frame: CGRect(origin: CGPoint(x: width - rightInset - 43.0 - UIScreenPixel, y: 2 - UIScreenPixel), size: CGSize(width: 44.0, height: 44)))
        self.binNode.frame = self.deleteButton.bounds
        
        var isScheduledMessages = false
        if case .scheduledMessages = interfaceState.subject {
            isScheduledMessages = true
        }
        
        if let slowmodeState = interfaceState.slowmodeState, !isScheduledMessages {
            let sendButtonRadialStatusNode: ChatSendButtonRadialStatusNode
            if let current = self.sendButtonRadialStatusNode {
                sendButtonRadialStatusNode = current
            } else {
                sendButtonRadialStatusNode = ChatSendButtonRadialStatusNode(color: interfaceState.theme.chat.inputPanel.panelControlAccentColor)
                sendButtonRadialStatusNode.alpha = self.sendButton.alpha
                self.sendButtonRadialStatusNode = sendButtonRadialStatusNode
                self.addSubnode(sendButtonRadialStatusNode)
            }
            
            transition.updateSublayerTransformScale(layer: self.sendButton.layer, scale: CGPoint(x: 0.7575, y: 0.7575))
            
            sendButtonRadialStatusNode.frame = CGRect(origin: CGPoint(x: self.sendButton.frame.midX - 33.0 / 2.0, y: self.sendButton.frame.midY - 33.0 / 2.0), size: CGSize(width: 33.0, height: 33.0))
            sendButtonRadialStatusNode.slowmodeState = slowmodeState
        } else {
            if let sendButtonRadialStatusNode = self.sendButtonRadialStatusNode {
                self.sendButtonRadialStatusNode = nil
                sendButtonRadialStatusNode.removeFromSupernode()
            }
            transition.updateSublayerTransformScale(layer: self.sendButton.layer, scale: CGPoint(x: 1.0, y: 1.0))
        }
        
        transition.updateFrame(node: self.playButton, frame: CGRect(origin: CGPoint(x: leftInset + 52.0, y: 10.0), size: CGSize(width: 26.0, height: 26.0)))
        self.playPauseIconNode.frame = CGRect(origin: CGPoint(x: -2.0, y: -1.0), size: CGSize(width: 26.0, height: 26.0))

        let waveformBackgroundFrame = CGRect(origin: CGPoint(x: leftInset + 45.0, y: 7.0 - UIScreenPixel), size: CGSize(width: width - leftInset - rightInset - 90.0, height: 33.0))
        transition.updateFrame(node: self.waveformBackgroundNode, frame: waveformBackgroundFrame)
        transition.updateFrame(node: self.waveformButton, frame: CGRect(origin: CGPoint(x: leftInset + 45.0, y: 0.0), size: CGSize(width: width - leftInset - rightInset - 90.0, height: panelHeight)))
        transition.updateFrame(node: self.waveformScubberNode, frame: CGRect(origin: CGPoint(x: leftInset + 45.0 + 35.0, y: 7.0 + floor((33.0 - 13.0) / 2.0)), size: CGSize(width: width - leftInset - rightInset - 90.0 - 45.0 - 40.0, height: 13.0)))
        transition.updateFrame(node: self.durationLabel, frame: CGRect(origin: CGPoint(x: width - rightInset - 90.0 - 4.0, y: 15.0), size: CGSize(width: 35.0, height: 20.0)))
        
        prevInputPanelNode?.frame = CGRect(origin: .zero, size: CGSize(width: width, height: panelHeight))
        if let prevTextInputPanelNode = self.prevInputPanelNode as? ChatTextInputPanelNode {
            self.prevInputPanelNode = nil
            
            if let audioRecordingDotNode = prevTextInputPanelNode.audioRecordingDotNode {
                let startAlpha = CGFloat(audioRecordingDotNode.layer.presentation()?.opacity ?? 1.0)
                audioRecordingDotNode.layer.removeAllAnimations()
                audioRecordingDotNode.layer.animateScale(from: 1.0, to: 0.3, duration: 0.15, removeOnCompletion: false)
                audioRecordingDotNode.layer.animateAlpha(from: startAlpha, to: 0.0, duration: 0.15, removeOnCompletion: false)
            }
            
            if let audioRecordingTimeNode = prevTextInputPanelNode.audioRecordingTimeNode {
                audioRecordingTimeNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, removeOnCompletion: false)
                audioRecordingTimeNode.layer.animateScale(from: 1.0, to: 0.3, duration: 0.15, removeOnCompletion: false)
                let timePosition = audioRecordingTimeNode.position
                audioRecordingTimeNode.layer.animatePosition(from: timePosition, to: CGPoint(x: timePosition.x - 20, y: timePosition.y), duration: 0.15, removeOnCompletion: false)
            }
            
            if let audioRecordingCancelIndicator = prevTextInputPanelNode.audioRecordingCancelIndicator {
                audioRecordingCancelIndicator.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, removeOnCompletion: false)
            }
            
            prevTextInputPanelNode.actionButtons.micButton.animateOut(true)
            
            self.deleteButton.layer.animateScale(from: 0.3, to: 1.0, duration: 0.15)
            self.deleteButton.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.15)
            
            self.playButton.layer.animateScale(from: 0.01, to: 1.0, duration: 0.3, delay: 0.1)
            self.playButton.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2, delay: 0.1)
                        
            self.durationLabel.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3, delay: 0.1)
            
            self.waveformScubberNode.layer.animateScaleY(from: 0.1, to: 1.0, duration: 0.3, delay: 0.1)
            self.waveformScubberNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2, delay: 0.1)
            
            self.waveformBackgroundNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.15)
            self.waveformBackgroundNode.layer.animateFrame(
                from: self.sendButton.frame.insetBy(dx: 5.5, dy: 5.5),
                to: waveformBackgroundFrame,
                duration: 0.2,
                delay: 0.12,
                timingFunction: CAMediaTimingFunctionName.easeInEaseOut.rawValue,
                removeOnCompletion: false
            ) { [weak self, weak prevTextInputPanelNode] finished in
                if prevTextInputPanelNode?.supernode === self {
                    prevTextInputPanelNode?.removeFromSupernode()
                }
            }
        }
        
        return panelHeight
    }
    
    override func canHandleTransition(from prevInputPanelNode: ChatInputPanelNode?) -> Bool {
        return prevInputPanelNode is ChatTextInputPanelNode
    }
    
    @objc func deletePressed() {
        self.mediaPlayer?.pause()
        self.interfaceInteraction?.deleteRecordedMedia()
    }
    
    @objc func sendPressed() {
        self.interfaceInteraction?.sendRecordedMedia(false)
    }
    
    @objc func waveformPressed() {
        self.mediaPlayer?.togglePlayPause()
    }
    
    override func minimalHeight(interfaceState: ChatPresentationInterfaceState, metrics: LayoutMetrics) -> CGFloat {
        return defaultHeight(metrics: metrics)
    }
    
    func frameForInputActionButton() -> CGRect? {
        return self.sendButton.frame
    }
}

private enum PlayPauseIconNodeState: Equatable {
    case play
    case pause
}

private final class PlayPauseIconNode: ManagedAnimationNode {
    private let duration: Double = 0.35
    private var iconState: PlayPauseIconNodeState = .pause
    
    init() {
        super.init(size: CGSize(width: 28.0, height: 28.0))
        
        self.trackTo(item: ManagedAnimationItem(source: .local("anim_playpause"), frames: .range(startFrame: 41, endFrame: 41), duration: 0.01))
    }
    
    func enqueueState(_ state: PlayPauseIconNodeState, animated: Bool) {
        guard self.iconState != state else {
            return
        }
        
        let previousState = self.iconState
        self.iconState = state
        
        switch previousState {
            case .pause:
                switch state {
                    case .play:
                        if animated {
                            self.trackTo(item: ManagedAnimationItem(source: .local("anim_playpause"), frames: .range(startFrame: 41, endFrame: 83), duration: self.duration))
                        } else {
                            self.trackTo(item: ManagedAnimationItem(source: .local("anim_playpause"), frames: .range(startFrame: 0, endFrame: 0), duration: 0.01))
                        }
                    case .pause:
                        break
                }
            case .play:
                switch state {
                    case .pause:
                        if animated {
                            self.trackTo(item: ManagedAnimationItem(source: .local("anim_playpause"), frames: .range(startFrame: 0, endFrame: 41), duration: self.duration))
                        } else {
                            self.trackTo(item: ManagedAnimationItem(source: .local("anim_playpause"), frames: .range(startFrame: 41, endFrame: 41), duration: 0.01))
                        }
                    case .play:
                        break
                }
        }
    }
}