import Foundation
import UIKit
import AsyncDisplayKit
import Display
import SwiftSignalKit
import TelegramCore
import TelegramPresentationData
import ContextUI
import ChatPresentationInterfaceState
import ChatMessageBackground
import ChatControllerInteraction
import AccountContext
import ChatTextInputMediaRecordingButton
import ChatSendButtonRadialStatusNode

final class ChatTextInputActionButtonsNode: ASDisplayNode {
    private let presentationContext: ChatPresentationContext?
    private let strings: PresentationStrings
    
    let micButton: ChatTextInputMediaRecordingButton
    let sendContainerNode: ASDisplayNode
    let backdropNode: ChatMessageBubbleBackdrop
    let backgroundNode: ASDisplayNode
    let sendButton: HighlightTrackingButtonNode
    var sendButtonRadialStatusNode: ChatSendButtonRadialStatusNode?
    var sendButtonHasApplyIcon = false
    var animatingSendButton = false
    let expandMediaInputButton: HighlightableButtonNode
    
    var sendButtonLongPressed: ((ASDisplayNode, ContextGesture) -> Void)?
    
    private var gestureRecognizer: ContextGesture?
    var sendButtonLongPressEnabled = false {
        didSet {
            self.gestureRecognizer?.isEnabled = self.sendButtonLongPressEnabled
        }
    }
    
    private var micButtonPointerInteraction: PointerInteraction?
    private var sendButtonPointerInteraction: PointerInteraction?
    
    private var validLayout: CGSize?
    
    init(context: AccountContext, presentationInterfaceState: ChatPresentationInterfaceState, presentationContext: ChatPresentationContext?, presentController: @escaping (ViewController) -> Void) {
        self.presentationContext = presentationContext
        let theme = presentationInterfaceState.theme
        let strings = presentationInterfaceState.strings
        self.strings = strings
         
        self.micButton = ChatTextInputMediaRecordingButton(context: context, theme: theme, pause: true, strings: strings, presentController: presentController)
        
        self.sendContainerNode = ASDisplayNode()
        self.sendContainerNode.layer.allowsGroupOpacity = true
        
        self.backgroundNode = ASDisplayNode()
        self.backgroundNode.backgroundColor = theme.chat.inputPanel.actionControlFillColor
        self.backgroundNode.clipsToBounds = true
        self.backdropNode = ChatMessageBubbleBackdrop()
        self.sendButton = HighlightTrackingButtonNode(pointerStyle: nil)
        
        self.expandMediaInputButton = HighlightableButtonNode(pointerStyle: .circle(36.0))
        
        super.init()
        
        self.isAccessibilityElement = true
        self.accessibilityTraits = [.button, .notEnabled]
        
        self.sendButton.highligthedChanged = { [weak self] highlighted in
            if let strongSelf = self {
                if strongSelf.sendButtonHasApplyIcon || !strongSelf.sendButtonLongPressEnabled {
                    if highlighted {
                        strongSelf.sendContainerNode.layer.removeAnimation(forKey: "opacity")
                        strongSelf.sendContainerNode.alpha = 0.4
                    } else {
                        strongSelf.sendContainerNode.alpha = 1.0
                        strongSelf.sendContainerNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
                    }
                } else {
                    if highlighted {
                        strongSelf.sendContainerNode.layer.animateScale(from: 1.0, to: 0.75, duration: 0.4, removeOnCompletion: false)
                    } else if let presentationLayer = strongSelf.sendContainerNode.layer.presentation() {
                        strongSelf.sendContainerNode.layer.animateScale(from: CGFloat((presentationLayer.value(forKeyPath: "transform.scale.y") as? NSNumber)?.floatValue ?? 1.0), to: 1.0, duration: 0.25, removeOnCompletion: false)
                    }
                }
            }
        }
        
        self.micButton.layer.allowsGroupOpacity = true
        self.view.addSubview(self.micButton)
            
        self.addSubnode(self.sendContainerNode)
        self.sendContainerNode.addSubnode(self.backgroundNode)
        if let presentationContext = presentationContext {
            let graphics = PresentationResourcesChat.principalGraphics(theme: theme, wallpaper: presentationInterfaceState.chatWallpaper, bubbleCorners: presentationInterfaceState.bubbleCorners)
            self.backdropNode.setType(type: .outgoing(.None), theme: ChatPresentationThemeData(theme: theme, wallpaper: presentationInterfaceState.chatWallpaper), essentialGraphics: graphics, maskMode: true, backgroundNode: presentationContext.backgroundNode)
            self.backgroundNode.addSubnode(self.backdropNode)
        }
        self.sendContainerNode.addSubnode(self.sendButton)
        self.addSubnode(self.expandMediaInputButton)
    }
    
    override func didLoad() {
        super.didLoad()
        
        let gestureRecognizer = ContextGesture(target: nil, action: nil)
        self.gestureRecognizer = gestureRecognizer
        self.sendButton.view.addGestureRecognizer(gestureRecognizer)
        gestureRecognizer.activated = { [weak self] recognizer, _ in
            guard let strongSelf = self else {
                return
            }
            if !strongSelf.sendButtonHasApplyIcon {
                strongSelf.sendButtonLongPressed?(strongSelf, recognizer)
            }
        }
        
        self.micButtonPointerInteraction = PointerInteraction(view: self.micButton, style: .circle(36.0))
        self.sendButtonPointerInteraction = PointerInteraction(view: self.sendButton.view, customInteractionView: self.backgroundNode.view, style: .lift)
    }
    
    func updateTheme(theme: PresentationTheme, wallpaper: TelegramWallpaper) {
        self.micButton.updateTheme(theme: theme)
        self.expandMediaInputButton.setImage(PresentationResourcesChat.chatInputPanelExpandButtonImage(theme), for: [])
        
        self.backgroundNode.backgroundColor = theme.chat.inputPanel.actionControlFillColor
        
        if [.day, .night].contains(theme.referenceTheme.baseTheme) && !theme.chat.message.outgoing.bubble.withWallpaper.hasSingleFillColor {
            self.backdropNode.isHidden = false
        } else {
            self.backdropNode.isHidden = true
        }
        
        let graphics = PresentationResourcesChat.principalGraphics(theme: theme, wallpaper: wallpaper, bubbleCorners: .init(mainRadius: 1, auxiliaryRadius: 1, mergeBubbleCorners: false))
        self.backdropNode.setType(type: .outgoing(.None), theme: ChatPresentationThemeData(theme: theme, wallpaper: wallpaper), essentialGraphics: graphics, maskMode: false, backgroundNode: self.presentationContext?.backgroundNode)
    }
    
    private var absoluteRect: (CGRect, CGSize)?
    func updateAbsoluteRect(_ rect: CGRect, within containerSize: CGSize, transition: ContainedViewLayoutTransition) {
        let previousContaierSize = self.absoluteRect?.1
        self.absoluteRect = (rect, containerSize)
        self.backdropNode.update(rect: rect, within: containerSize, transition: transition)
        
        if let previousContaierSize, previousContaierSize != containerSize {
            Queue.mainQueue().after(0.2) {
                self.micButton.reset()
            }
        }
    }
    
    func updateLayout(size: CGSize, isMediaInputExpanded: Bool, transition: ContainedViewLayoutTransition, interfaceState: ChatPresentationInterfaceState) {
        self.validLayout = size
        transition.updateFrame(layer: self.micButton.layer, frame: CGRect(origin: CGPoint(), size: size))
        self.micButton.layoutItems()
        
        transition.updateFrame(layer: self.sendButton.layer, frame: CGRect(origin: CGPoint(), size: size))
        transition.updateFrame(node: self.sendContainerNode, frame: CGRect(origin: CGPoint(), size: size))
        
        let backgroundSize = CGSize(width: 33.0, height: 33.0)
        transition.updateFrame(node: self.backgroundNode, frame: CGRect(origin: CGPoint(x: floorToScreenPixels((size.width - backgroundSize.width) / 2.0), y: floorToScreenPixels((size.height - backgroundSize.height) / 2.0)), size: backgroundSize))
        self.backgroundNode.cornerRadius = backgroundSize.width / 2.0
        
        transition.updateFrame(node: self.backdropNode, frame: CGRect(origin: CGPoint(x: -2.0, y: -2.0), size: CGSize(width: size.width + 12.0, height: size.height + 2.0)))
        if let (rect, containerSize) = self.absoluteRect {
            self.backdropNode.update(rect: rect, within: containerSize)
        }
        
//        var isScheduledMessages = false
//        if case .scheduledMessages = interfaceState.subject {
//            isScheduledMessages = true
//        }
//        
//        if let slowmodeState = interfaceState.slowmodeState, !isScheduledMessages && interfaceState.editMessageState == nil {
//            let sendButtonRadialStatusNode: ChatSendButtonRadialStatusNode
//            if let current = self.sendButtonRadialStatusNode {
//                sendButtonRadialStatusNode = current
//            } else {
//                sendButtonRadialStatusNode = ChatSendButtonRadialStatusNode(color: interfaceState.theme.chat.inputPanel.panelControlAccentColor)
//                sendButtonRadialStatusNode.alpha = self.sendContainerNode.alpha
//                self.sendButtonRadialStatusNode = sendButtonRadialStatusNode
//                self.addSubnode(sendButtonRadialStatusNode)
//            }
//            
//            transition.updateSublayerTransformScale(layer: self.sendContainerNode.layer, scale: CGPoint(x: 0.7575, y: 0.7575))
//            
//            let defaultSendButtonSize: CGFloat = 25.0
//            let defaultOriginX = floorToScreenPixels((self.sendButton.bounds.width - defaultSendButtonSize) / 2.0)
//            let defaultOriginY = floorToScreenPixels((self.sendButton.bounds.height - defaultSendButtonSize) / 2.0)
//            
//            let radialStatusFrame = CGRect(origin: CGPoint(x: defaultOriginX - 4.0, y: defaultOriginY - 4.0), size: CGSize(width: 33.0, height: 33.0))
//            sendButtonRadialStatusNode.frame = radialStatusFrame
//            sendButtonRadialStatusNode.slowmodeState = slowmodeState
//        } else {
//            if let sendButtonRadialStatusNode = self.sendButtonRadialStatusNode {
//                self.sendButtonRadialStatusNode = nil
//                sendButtonRadialStatusNode.removeFromSupernode()
//            }
//            transition.updateSublayerTransformScale(layer: self.sendContainerNode.layer, scale: CGPoint(x: 1.0, y: 1.0))
//        }
        
        transition.updateFrame(node: self.expandMediaInputButton, frame: CGRect(origin: CGPoint(), size: size))
        let expanded = isMediaInputExpanded
        transition.updateSublayerTransformScale(node: self.expandMediaInputButton, scale: CGPoint(x: 1.0, y: expanded ? 1.0 : -1.0))
    }
    
    func updateAccessibility() {
        self.accessibilityTraits = .button
        if !self.micButton.alpha.isZero {
            switch self.micButton.mode {
                case .audio:
                    self.accessibilityLabel = self.strings.VoiceOver_Chat_RecordModeVoiceMessage
                    self.accessibilityHint = self.strings.VoiceOver_Chat_RecordModeVoiceMessageInfo
                case .video:
                    self.accessibilityLabel = self.strings.VoiceOver_Chat_RecordModeVideoMessage
                    self.accessibilityHint = self.strings.VoiceOver_Chat_RecordModeVideoMessageInfo
            }
        } else {
            self.accessibilityLabel = self.strings.MediaPicker_Send
            self.accessibilityHint = nil
        }
    }
}