import SwiftUI
import SwiftData
import AVKit

extension Notification.Name {
    static let navigateToMediaViewer = Notification.Name("navigateToMediaViewer")
}

// MARK: - 主视图
struct BlindBoxView: View {
    @State private var showLottieAnimation = true  // 控制Lottie动画显示
    @State private var showScalingOverlay = false
    @State private var scale: CGFloat = 0.1
    @State private var mediaToShow: MediaType?
    @State private var videoPlayer: AVPlayer?
    @State private var showControls = false  // Add this line for controlling visibility

    private func startScalingAnimation() {
        // Start from 10% size
        self.scale = 0.1
        self.showScalingOverlay = true
        
        // Slower animation with spring effect
        withAnimation(.spring(response: 2.0, dampingFraction: 0.5, blendDuration: 0.8)) {
            self.scale = 1.0  // Scale enough to cover the screen
        }
    }
    
    private func loadVideo() {
        // Replace with your actual video URL
        if let url = URL(string: "https://cdn.fairclip.cn/files/7342843896868769793/飞书20250617-144935.mp4") {
            let player = AVPlayer(url: url)
            player.isMuted = true  // Mute the video
            self.videoPlayer = player
        }
    }
    
    var body: some View {
        ZStack {
            // 全局背景颜色背景色
            Color.themeTextWhiteSecondary.ignoresSafeArea()
            
            // 主内容区域
            VStack {
                VStack(spacing: 20) {
                    // 标题
                    VStack(alignment: .leading, spacing: 4) { 
                        Text("Hi! Click And")
                        Text("Open Your First Box~")
                    }
                    .font(Typography.font(for: .smallLargeTitle))
                    .fontWeight(.bold)
                    .foregroundColor(Color.themeTextMessageMain)
                    .frame(maxWidth: .infinity, alignment: .leading)
                    .padding(.horizontal)
                    .opacity(showScalingOverlay ? 0 : 1)
                    .offset(y: showScalingOverlay ? -UIScreen.main.bounds.height * 0.2 : 0)
                    .animation(.easeInOut(duration: 0.5), value: showScalingOverlay)
                    
                    // 盲盒
                    ZStack {
                        // 1. 背景SVG
                        if !showScalingOverlay {
                            SVGImage(svgName: "BlindBg")
                                .frame(
                                    width: UIScreen.main.bounds.width * 1.8,
                                    height: UIScreen.main.bounds.height * 0.85
                                )
                                .position(x: UIScreen.main.bounds.width / 2, 
                                        y: UIScreen.main.bounds.height * 0.325)
                                .opacity(showScalingOverlay ? 0 : 1)
                                .animation(.easeOut(duration: 0.5), value: showScalingOverlay)
                        }
                        
                        if !showScalingOverlay {
                            LottieView(name: "data", loopMode: .loop)
                                .frame(width: 200, height: 200)
                                .position(x: UIScreen.main.bounds.width / 2, 
                                        y: UIScreen.main.bounds.height * 0.325)
                                .opacity(showScalingOverlay ? 0 : 1)
                                .animation(.easeOut(duration: 0.5), value: showScalingOverlay)
                        }
                    }
                    .frame(
                        maxWidth: .infinity,
                        maxHeight: UIScreen.main.bounds.height * 0.65
                    )
                    .opacity(showScalingOverlay ? 0 : 1)
                    .animation(.easeOut(duration: 0.5), value: showScalingOverlay)
                    .offset(y: showScalingOverlay ? -100 : 0)
                    .animation(.easeInOut(duration: 0.5), value: showScalingOverlay)
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
                .background(Color.themeTextWhiteSecondary)
                .edgesIgnoringSafeArea(.all)
            }
            
            // Scaling Overlay
            if showScalingOverlay {
                ZStack {
                    // Video Player
                    if let player = videoPlayer {
                        ZStack(alignment: .topLeading) {
                            VideoPlayer(player: player)
                                .aspectRatio(contentMode: .fill)
                                .frame(width: UIScreen.main.bounds.width * scale,  
                                     height: UIScreen.main.bounds.height * scale)
                                .clipped()
                                .opacity(scale == 1 ? 1 : 0.7)
                                .contentShape(Rectangle()) // Make entire area tappable
                                .onTapGesture {
                                    withAnimation(.easeInOut(duration: 0.3)) {
                                        showControls.toggle()
                                    }
                                }
                                .onAppear {
                                    player.seek(to: .zero)
                                    player.play()
                                    NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: player.currentItem, queue: .main) { _ in
                                        player.seek(to: .zero)
                                        player.play()
                                    }
                                }
                            
                            // Back Button - Always on top
                            if showControls {
                                Button(action: {
                                    if let media = mediaToShow {
                                        if let url = URL(string: "https://cdn.fairclip.cn/files/7348219809961742336/c5ca6151-91d3-483e-b7e7-c37f2cb69dc0.png") {
                                                URLSession.shared.dataTask(with: url) { data, response, error in
                                                    if let data = data, let image = UIImage(data: data) {
                                                        let media = MediaType.image(image)
                                                        DispatchQueue.main.async {
                                                            Router.shared.navigate(to: .blindOutcome(media: media))
                                                        }
                                                    }
                                                }.resume()
                                        }
                                    }
                                }) {
                                    Image(systemName: "chevron.left.circle.fill")
                                        .font(.system(size: 36))
                                        .foregroundColor(.white)
                                        .padding(12)
                                        .clipShape(Circle())
                                }
                                .padding(.top, 50)
                                .padding(.leading, 20)
                                .zIndex(1000) // Ensure it's on top
                                .transition(.opacity)
                            }
                        }
                    } else {
                        // Fallback color in case video fails to load
                        Color.red
                            .frame(width: UIScreen.main.bounds.width * scale,
                                 height: UIScreen.main.bounds.height * scale)
                    }
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
                .animation(.easeInOut(duration: 3.0), value: scale)
                .ignoresSafeArea()
                .onTapGesture {
                    withAnimation(.easeInOut(duration: 0.3)) {
                        showControls.toggle()
                    }
                }
                .onAppear {
                    // Start animation after a small delay to ensure view is loaded
                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
                        withAnimation(.spring(response: 2.5, dampingFraction: 0.6, blendDuration: 1.0)) {
                            self.scale = 1.0
                        }
                    }
                }
            }
        }
        .navigationBarBackButtonHidden(true)
        .onAppear {
            // Load video first
            self.loadVideo()
            
            // Then load image
            if let url = URL(string: "https://cdn.fairclip.cn/files/7348219809961742336/c5ca6151-91d3-483e-b7e7-c37f2cb69dc0.png") {
                URLSession.shared.dataTask(with: url) { data, response, error in
                    if let data = data, let image = UIImage(data: data) {
                        let media = MediaType.image(image)
                        self.mediaToShow = media
                        
                        // Start scaling animation after 5 seconds
                        DispatchQueue.main.asyncAfter(deadline: .now() + 5) {
                            self.startScalingAnimation()
                        }
                    }
                }.resume()
            }
        }
    }
}

// MARK: - 预览
#Preview {
    BlindBoxView()
}