import SwiftUI
import QRCode
import CoreData
import Photos
#if canImport(PhotosUI)
import PhotosUI
#endif

// MARK: - 标签类型枚举
enum TabType: String, CaseIterable {
    case colors = "colors"
    case dots = "dots"
    case eyes = "eyes"
    case logos = "logos"
    
    var displayName: String {
        switch self {
        case .colors: return "颜色"
        case .dots: return "点类型"
        case .eyes: return "眼睛"
        case .logos: return "Logo"
        }
    }
    
    var iconName: String {
        switch self {
        case .colors: return "paintpalette"
        case .dots: return "circle.grid.3x3"
        case .eyes: return "eye"
        case .logos: return "photo"
        }
    }
}

// MARK: - 自定义二维码样式界面
struct QRCodeStyleView: View {
    let qrCodeContent: String
    @Environment(\.dismiss) private var dismiss
    @StateObject private var coreDataManager = CoreDataManager.shared
    
    // 颜色选择
    @State private var selectedForegroundColor: QRCodeColor = .black
    @State private var selectedBackgroundColor: QRCodeColor = .white
    
    // 点类型选择
    @State private var selectedDotType: QRCodeDotType = .square
    
    // 眼睛类型选择
    @State private var selectedEyeType: QRCodeEyeType = .square
    
    // Logo选择
    @State private var selectedLogo: QRCodeLogo? = nil
    @State private var customLogoImage: UIImage? = nil
    @State private var photoPickerItem: Any? = nil
    @State private var photoLibraryAccessGranted = false
    @State private var showingImagePicker = false
    @State private var showingImageCropper = false
    @State private var imageToCrop: UIImage? = nil
    
    // 生成的二维码图片
    @State private var qrCodeImage: UIImage?
    @State private var isLoading = false
    
    // 选中的标签类型
    @State private var selectedTabType: TabType = .colors
    
    // 创建QRCode文档
    private func createQRCodeDocument() -> QRCode.Document {
        let d = try! QRCode.Document(engine: QRCodeEngineExternal())
        
        // 使用传入的二维码内容
        d.utf8String = qrCodeContent
        
        // 设置背景色
        d.design.backgroundColor(selectedBackgroundColor.cgColor)
        
        // 设置眼睛样式
        d.design.style.eye = QRCode.FillStyle.Solid(selectedForegroundColor.cgColor)
        d.design.style.eyeBackground = selectedBackgroundColor.cgColor
        
        // 设置点样式
        d.design.shape.onPixels = selectedDotType.pixelShape
        d.design.style.onPixels = QRCode.FillStyle.Solid(selectedForegroundColor.cgColor)
        d.design.style.onPixelsBackground = selectedBackgroundColor.cgColor
        
        d.design.shape.offPixels = selectedDotType.pixelShape
        d.design.style.offPixels = QRCode.FillStyle.Solid(selectedBackgroundColor.cgColor)
        d.design.style.offPixelsBackground = selectedBackgroundColor.cgColor
        
        // 设置眼睛形状
        d.design.shape.eye = selectedEyeType.eyeShape
        
        // 如果有选择的Logo，设置Logo
        if let customLogoImage = customLogoImage,
           let cgImage = customLogoImage.cgImage {
            // 使用自定义Logo
            print("应用自定义Logo，CGImage大小: \(cgImage.width) x \(cgImage.height)")
            d.logoTemplate = QRCode.LogoTemplate.CircleCenter(image: cgImage)
        } else if let selectedLogo = selectedLogo,
                  let logoImage = selectedLogo.image,
                  let cgImage = logoImage.cgImage {
            // 使用预设Logo
            print("应用预设Logo: \(selectedLogo.displayName)")
            d.logoTemplate = QRCode.LogoTemplate.CircleCenter(image: cgImage)
        } else {
            print("没有设置任何Logo")
        }
        
        return d
    }

    var body: some View {
        VStack(spacing: 0) {
            // 二维码预览区域
            qrCodePreviewSection
            
            // 样式选择区域
            styleSelectionSection
        }
        .navigationTitle("自定义样式")
        .navigationBarTitleDisplayMode(.inline)
        .toolbar {
            ToolbarItem(placement: .navigationBarTrailing) {
                Button("保存") {
                    saveQRCode()
                }
                .font(.system(size: 16, weight: .semibold))
            }
        }
        .onAppear {
            checkPhotoLibraryPermission()
        }
        .sheet(isPresented: $showingImagePicker) {
            ImagePicker { image in
                imageToCrop = image
                showingImageCropper = true
            }
        }
        .sheet(isPresented: $showingImageCropper) {
            if let imageToCrop = imageToCrop {
                ImageCropperView(image: imageToCrop) { croppedImage in
                    customLogoImage = croppedImage
                    selectedLogo = nil // 清除预设Logo选择
                    self.imageToCrop = nil
                }
            }
        }
    }
    
    // MARK: - 二维码预览区域
    private var qrCodePreviewSection: some View {
        VStack(spacing: 16) {
            QRCodeDocumentUIView(document: createQRCodeDocument())
                .frame(width: 300, height: 300)
        }
        .padding()
        .background(Color(.systemBackground))
    }
    
    // MARK: - 样式选择区域
    private var styleSelectionSection: some View {
        VStack(spacing: 0) {
            // 标签类型选择
            tabTypeSelection
            
            // 内容区域
            contentArea
        }
        .background(Color(.systemGroupedBackground))
    }
    
    // MARK: - 标签类型选择
    private var tabTypeSelection: some View {
        HStack(spacing: 0) {
            ForEach(TabType.allCases, id: \.self) { tabType in
                Button(action: {
                    selectedTabType = tabType
                }) {
                    VStack(spacing: 4) {
                        Image(systemName: tabType.iconName)
                            .font(.system(size: 20))
                            .foregroundColor(selectedTabType == tabType ? .blue : .gray)
                        
                        Text(tabType.displayName)
                            .font(.caption)
                            .foregroundColor(selectedTabType == tabType ? .blue : .gray)
                    }
                    .frame(maxWidth: .infinity)
                    .padding(.vertical, 12)
                    .background(
                        Rectangle()
                            .fill(selectedTabType == tabType ? Color.blue.opacity(0.1) : Color.clear)
                    )
                }
            }
        }
        .background(Color(.systemBackground))
        .overlay(
            Rectangle()
                .frame(height: 1)
                .foregroundColor(Color(.separator)),
            alignment: .bottom
        )
    }
    
    // MARK: - 内容区域
    private var contentArea: some View {
        Group {
            switch selectedTabType {
            case .colors:
                colorsContent
            case .dots:
                dotsContent
            case .eyes:
                eyesContent
            case .logos:
                logosContent
            }
        }
        .frame(maxHeight: 400)
    }
    
    // MARK: - 颜色内容
    private var colorsContent: some View {
        ScrollView {
            VStack(spacing: 24) {
                // 前景色选择
                colorSelectionSection(
                    title: "前景色",
                    colors: QRCodeColor.foregroundColors,
                    selectedColor: $selectedForegroundColor
                )
                
                // 背景色选择
                colorSelectionSection(
                    title: "背景色",
                    colors: QRCodeColor.backgroundColors,
                    selectedColor: $selectedBackgroundColor
                )
            }
            .padding()
        }
    }
    
    // MARK: - 点类型内容
    private var dotsContent: some View {
        ScrollView {
            VStack(spacing: 16) {
                Text("选择点类型")
                    .font(.title2)
                    .fontWeight(.bold)
                    .padding(.top)
                
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: 3), spacing: 16) {
                    ForEach(QRCodeDotType.allCases, id: \.self) { dotType in
                        Button(action: {
                            selectedDotType = dotType
                        }) {
                            VStack(spacing: 8) {
                                if let image = loadImage(named: dotType.thumbnailName) {
                                    Image(uiImage: image)
                                        .resizable()
                                        .aspectRatio(contentMode: .fit)
                                        .frame(width: 60, height: 60)
                                        .background(Color.white)
                                        .cornerRadius(12)
                                } else {
                                    RoundedRectangle(cornerRadius: 12)
                                        .fill(Color.gray.opacity(0.3))
                                        .frame(width: 60, height: 60)
                                        .overlay(
                                            Text("?")
                                                .font(.title2)
                                                .foregroundColor(.secondary)
                                        )
                                }
                                
                                Text(dotType.displayName)
                                    .font(.caption)
                                    .foregroundColor(.primary)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(12)
                            .background(
                                RoundedRectangle(cornerRadius: 16)
                                    .fill(selectedDotType == dotType ? Color.blue.opacity(0.1) : Color.clear)
                                    .overlay(
                                        RoundedRectangle(cornerRadius: 16)
                                            .stroke(selectedDotType == dotType ? Color.blue : Color.clear, lineWidth: 3)
                                    )
                            )
                        }
                    }
                }
                .padding(.horizontal)
            }
        }
    }
    
    // MARK: - 眼睛类型内容
    private var eyesContent: some View {
        ScrollView {
            VStack(spacing: 16) {
                Text("选择眼睛类型")
                    .font(.title2)
                    .fontWeight(.bold)
                    .padding(.top)
                
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: 3), spacing: 16) {
                    ForEach(QRCodeEyeType.allCases, id: \.self) { eyeType in
                        Button(action: {
                            selectedEyeType = eyeType
                        }) {
                            VStack(spacing: 8) {
                                if let image = loadImage(named: eyeType.thumbnailName) {
                                    Image(uiImage: image)
                                        .resizable()
                                        .aspectRatio(contentMode: .fit)
                                        .frame(width: 60, height: 60)
                                        .background(Color.white)
                                        .cornerRadius(12)
                                } else {
                                    RoundedRectangle(cornerRadius: 12)
                                        .fill(Color.gray.opacity(0.3))
                                        .frame(width: 60, height: 60)
                                        .overlay(
                                            Text("?")
                                                .font(.title2)
                                                .foregroundColor(.secondary)
                                        )
                                }
                                
                                Text(eyeType.displayName)
                                    .font(.caption)
                                    .foregroundColor(.primary)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(12)
                            .background(
                                RoundedRectangle(cornerRadius: 16)
                                    .fill(selectedEyeType == eyeType ? Color.blue.opacity(0.1) : Color.clear)
                                    .overlay(
                                        RoundedRectangle(cornerRadius: 16)
                                            .stroke(selectedEyeType == eyeType ? Color.blue : Color.clear, lineWidth: 3)
                                    )
                            )
                        }
                    }
                }
                .padding(.horizontal)
            }
        }
    }
    
    // MARK: - Logo内容
    private var logosContent: some View {
        ScrollView {
            VStack(spacing: 16) {
                Text("选择Logo")
                    .font(.title2)
                    .fontWeight(.bold)
                    .padding(.top)
                
                LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: 3), spacing: 16) {
                    // 无Logo选项
                    Button(action: {
                        selectedLogo = nil
                        customLogoImage = nil
                    }) {
                        VStack(spacing: 8) {
                            RoundedRectangle(cornerRadius: 12)
                                .fill(Color.gray.opacity(0.3))
                                .frame(width: 60, height: 60)
                                .overlay(
                                    Text("无")
                                        .font(.title2)
                                        .foregroundColor(.secondary)
                                )
                            
                            Text("无Logo")
                                .font(.caption)
                                .foregroundColor(.primary)
                                .multilineTextAlignment(.center)
                        }
                        .padding(12)
                        .background(
                            RoundedRectangle(cornerRadius: 16)
                                .fill(selectedLogo == nil && customLogoImage == nil ? Color.blue.opacity(0.1) : Color.clear)
                                .overlay(
                                    RoundedRectangle(cornerRadius: 16)
                                        .stroke(selectedLogo == nil && customLogoImage == nil ? Color.blue : Color.clear, lineWidth: 3)
                                )
                        )
                    }
                    
                    // 自定义Logo选项
                    if photoLibraryAccessGranted {
                        Button(action: {
                            showingImagePicker = true
                        }) {
                            VStack(spacing: 8) {
                                if let customLogoImage = customLogoImage {
                                    Image(uiImage: customLogoImage)
                                        .resizable()
                                        .aspectRatio(contentMode: .fit)
                                        .frame(width: 60, height: 60)
                                        .background(Color.white)
                                        .cornerRadius(12)
                                } else {
                                    RoundedRectangle(cornerRadius: 12)
                                        .fill(Color.blue.opacity(0.2))
                                        .frame(width: 60, height: 60)
                                        .overlay(
                                            Image(systemName: "photo.badge.plus")
                                                .font(.title2)
                                                .foregroundColor(.blue)
                                        )
                                }
                                
                                Text("自定义")
                                    .font(.caption)
                                    .foregroundColor(.primary)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(12)
                            .background(
                                RoundedRectangle(cornerRadius: 16)
                                    .fill(customLogoImage != nil ? Color.blue.opacity(0.1) : Color.clear)
                                    .overlay(
                                        RoundedRectangle(cornerRadius: 16)
                                            .stroke(customLogoImage != nil ? Color.blue : Color.clear, lineWidth: 3)
                                    )
                            )
                        }
                    } else {
                        // 权限被拒绝时的处理
                        Button(action: {
                            // 引导用户到设置页面
                            if let settingsUrl = URL(string: UIApplication.openSettingsURLString) {
                                UIApplication.shared.open(settingsUrl)
                            }
                        }) {
                            VStack(spacing: 8) {
                                RoundedRectangle(cornerRadius: 12)
                                    .fill(Color.red.opacity(0.2))
                                    .frame(width: 60, height: 60)
                                    .overlay(
                                        Image(systemName: "exclamationmark.triangle")
                                            .font(.title2)
                                            .foregroundColor(.red)
                                    )
                                
                                Text("需要权限")
                                    .font(.caption)
                                    .foregroundColor(.red)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(12)
                            .background(
                                RoundedRectangle(cornerRadius: 16)
                                    .fill(Color.clear)
                                    .overlay(
                                        RoundedRectangle(cornerRadius: 16)
                                            .stroke(Color.red.opacity(0.3), lineWidth: 1)
                                    )
                            )
                        }
                    }
                    
                    // Logo选项
                    ForEach(QRCodeLogo.allCases, id: \.self) { logo in
                        Button(action: {
                            selectedLogo = logo
                            customLogoImage = nil // 清除自定义Logo
                        }) {
                            VStack(spacing: 8) {
                                if let image = loadImage(named: logo.thumbnailName) {
                                    Image(uiImage: image)
                                        .resizable()
                                        .aspectRatio(contentMode: .fit)
                                        .frame(width: 60, height: 60)
                                        .background(Color.white)
                                        .cornerRadius(12)
                                } else {
                                    RoundedRectangle(cornerRadius: 12)
                                        .fill(Color.gray.opacity(0.3))
                                        .frame(width: 60, height: 60)
                                        .overlay(
                                            Text("?")
                                                .font(.title2)
                                                .foregroundColor(.secondary)
                                        )
                                }
                                
                                Text(logo.displayName)
                                    .font(.caption)
                                    .foregroundColor(.primary)
                                    .multilineTextAlignment(.center)
                            }
                            .padding(12)
                            .background(
                                RoundedRectangle(cornerRadius: 16)
                                    .fill(selectedLogo == logo ? Color.blue.opacity(0.1) : Color.clear)
                                    .overlay(
                                        RoundedRectangle(cornerRadius: 16)
                                            .stroke(selectedLogo == logo ? Color.blue : Color.clear, lineWidth: 3)
                                    )
                            )
                        }
                    }
                }
                .padding(.horizontal)
            }
        }
    }
    
    // MARK: - 颜色选择区域
    private func colorSelectionSection(
        title: String,
        colors: [QRCodeColor],
        selectedColor: Binding<QRCodeColor>
    ) -> some View {
        VStack(alignment: .leading, spacing: 12) {
            Text(title)
                .font(.headline)
                .foregroundColor(.primary)
            
            LazyVGrid(columns: Array(repeating: GridItem(.flexible()), count: 6), spacing: 12) {
                ForEach(colors, id: \.self) { color in
                    Button(action: {
                        selectedColor.wrappedValue = color
                    }) {
                        RoundedRectangle(cornerRadius: 8)
                            .fill(color.color)
                            .frame(height: 40)
                            .overlay(
                                RoundedRectangle(cornerRadius: 8)
                                    .stroke(selectedColor.wrappedValue == color ? Color.blue : Color.clear, lineWidth: 3)
                            )
                    }
                }
            }
        }
    }
    

    
    // MARK: - 保存二维码
    private func saveQRCode() {
        guard let qrCodeImage = qrCodeImage else { return }
        
        // 保存到相册
        UIImageWriteToSavedPhotosAlbum(qrCodeImage, nil, nil, nil)
        
        // 保存到历史记录
        saveToHistory()
        
        dismiss()
    }
    
    // MARK: - 保存到历史记录
    private func saveToHistory() {
        let context = coreDataManager.container.viewContext
        let historyItem = HistoryItem(context: context)
        historyItem.id = UUID()
        historyItem.dataType = DataType.qrcode.rawValue
        historyItem.dataSource = DataSource.created.rawValue
        historyItem.createdAt = Date()
        historyItem.isFavorite = false
        historyItem.qrCodeType = "custom"
        historyItem.content = qrCodeContent
        
        do {
            try context.save()
        } catch {
            print("保存到历史记录失败：\(error.localizedDescription)")
        }
    }
    
    // MARK: - 权限检查
    private func checkPhotoLibraryPermission() {
        let status = PHPhotoLibrary.authorizationStatus()
        print("相册权限状态: \(status.rawValue)")
        switch status {
        case .authorized, .limited:
            photoLibraryAccessGranted = true
            print("相册权限已授权")
        case .denied, .restricted:
            photoLibraryAccessGranted = false
            print("相册权限被拒绝")
        case .notDetermined:
            print("相册权限未确定，正在请求...")
            PHPhotoLibrary.requestAuthorization { newStatus in
                DispatchQueue.main.async {
                    self.photoLibraryAccessGranted = (newStatus == .authorized || newStatus == .limited)
                    print("权限请求结果: \(newStatus.rawValue), 授权状态: \(self.photoLibraryAccessGranted)")
                }
            }
        @unknown default:
            photoLibraryAccessGranted = false
            print("相册权限未知状态")
        }
    }
    
    // MARK: - 辅助函数
    private func loadImage(named name: String) -> UIImage? {
        // 方法1: 尝试从Bundle中直接加载
        if let image = UIImage(named: name) {
            return image
        }
        
        // 方法2: 尝试从Resources子目录加载
        let subdirectories = ["dots", "eyes", "logos"]
        for subdirectory in subdirectories {
            if let path = Bundle.main.path(forResource: name, ofType: "png", inDirectory: "Resources/\(subdirectory)") {
                return UIImage(contentsOfFile: path)
            }
        }
        
        // 方法3: 尝试从Bundle的Resources目录加载
        if let bundlePath = Bundle.main.path(forResource: "Resources", ofType: nil) {
            for subdirectory in subdirectories {
                if let imagePath = Bundle.main.path(forResource: name, ofType: "png", inDirectory: subdirectory) {
                    return UIImage(contentsOfFile: imagePath)
                }
            }
        }
        
        // 方法4: 尝试从Assets.xcassets加载
        if let image = UIImage(named: name, in: Bundle.main, with: nil) {
            return image
        }
        
        // 方法5: 尝试从Bundle根目录加载
        if let path = Bundle.main.path(forResource: name, ofType: "png") {
            return UIImage(contentsOfFile: path)
        }
        
        return nil
    }
}

// MARK: - 图片裁剪视图
struct ImageCropperView: View {
    let image: UIImage
    let onCropComplete: (UIImage) -> Void
    
    @Environment(\.dismiss) private var dismiss
    @State private var scale: CGFloat = 1.0
    @State private var lastScale: CGFloat = 1.0
    @State private var offset: CGSize = .zero
    @State private var lastOffset: CGSize = .zero
    
    var body: some View {
        NavigationView {
            GeometryReader { geometry in
                ZStack {
                    Color.black
                        .ignoresSafeArea()
                    
                    VStack {
                        // 裁剪区域
                        ZStack {
                            // 背景图片
                            Image(uiImage: image)
                                .resizable()
                                .aspectRatio(contentMode: .fit)
                                .scaleEffect(scale)
                                .offset(offset)
                                .gesture(
                                    SimultaneousGesture(
                                        MagnificationGesture()
                                            .onChanged { value in
                                                let delta = value / lastScale
                                                lastScale = value
                                                scale = min(max(scale * delta, 0.5), 3.0)
                                            }
                                            .onEnded { _ in
                                                lastScale = 1.0
                                            },
                                        DragGesture()
                                            .onChanged { value in
                                                let delta = CGSize(
                                                    width: value.translation.width - lastOffset.width,
                                                    height: value.translation.height - lastOffset.height
                                                )
                                                lastOffset = value.translation
                                                offset = CGSize(
                                                    width: offset.width + delta.width,
                                                    height: offset.height + delta.height
                                                )
                                            }
                                            .onEnded { _ in
                                                lastOffset = .zero
                                            }
                                    )
                                )
                            
                            // 裁剪框
                            CropOverlay()
                        }
                        .frame(height: geometry.size.width) // 保持正方形
                        .clipped()
                        
                        Spacer()
                        
                        // 提示文字
                        Text("拖动和缩放来选择圆形Logo区域")
                            .foregroundColor(.white)
                            .font(.caption)
                            .padding(.bottom, 20)
                    }
                }
            }
            .navigationTitle("裁剪圆形Logo")
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .navigationBarLeading) {
                    Button("取消") {
                        dismiss()
                    }
                    .foregroundColor(.white)
                }
                
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button("完成") {
                        let croppedImage = cropImage()
                        onCropComplete(croppedImage)
                        dismiss()
                    }
                    .foregroundColor(.white)
                    .font(.system(size: 16, weight: .semibold))
                }
            }
        }
    }
    
    private func cropImage() -> UIImage {
        let renderer = UIGraphicsImageRenderer(size: CGSize(width: 80, height: 80))
        
        return renderer.image { context in
            // 计算裁剪区域
            let imageSize = image.size
            let viewSize = CGSize(width: 80, height: 80)
            
            // 计算图片在视图中的实际大小和位置
            let imageAspectRatio = imageSize.width / imageSize.height
            let viewAspectRatio = viewSize.width / viewSize.height
            
            let scaledImageSize: CGSize
            let scaledImageOffset: CGPoint
            
            if imageAspectRatio > viewAspectRatio {
                // 图片更宽，以高度为准
                scaledImageSize = CGSize(width: viewSize.height * imageAspectRatio, height: viewSize.height)
                scaledImageOffset = CGPoint(x: (viewSize.width - scaledImageSize.width) / 2, y: 0)
            } else {
                // 图片更高，以宽度为准
                scaledImageSize = CGSize(width: viewSize.width, height: viewSize.width / imageAspectRatio)
                scaledImageOffset = CGPoint(x: 0, y: (viewSize.height - scaledImageSize.height) / 2)
            }
            
            // 应用缩放和偏移
            let finalImageSize = CGSize(
                width: scaledImageSize.width * scale,
                height: scaledImageSize.height * scale
            )
            
            let finalImageOffset = CGPoint(
                x: scaledImageOffset.x + offset.width,
                y: scaledImageOffset.y + offset.height
            )
            
            // 计算裁剪区域
            let cropRect = CGRect(
                x: -finalImageOffset.x,
                y: -finalImageOffset.y,
                width: finalImageSize.width,
                height: finalImageSize.height
            )
            
            // 创建圆形裁剪路径 - 半径和正方形宽度一样
            let circlePath = UIBezierPath(ovalIn: CGRect(x: 0, y: 0, width: 80, height: 80))
            circlePath.addClip()
            
            // 绘制裁剪后的图片
            image.draw(in: cropRect)
        }
    }
}

// MARK: - 裁剪覆盖层
struct CropOverlay: View {
    var body: some View {
        GeometryReader { geometry in
            ZStack {
                // 半透明遮罩
                Color.black.opacity(0.5)
                    .mask(
                        Rectangle()
                            .overlay(
                                Circle()
                                    .frame(
                                        width: min(geometry.size.width, geometry.size.height) * 0.8,
                                        height: min(geometry.size.width, geometry.size.height) * 0.8
                                    )
                                    .blendMode(.destinationOut)
                            )
                    )
                
                // 圆形裁剪框边框
                Circle()
                    .stroke(Color.white, lineWidth: 2)
                    .frame(
                        width: min(geometry.size.width, geometry.size.height) * 0.8,
                        height: min(geometry.size.width, geometry.size.height) * 0.8
                    )
                
                // 圆形裁剪框四角标记
                ForEach(0..<4) { corner in
                    Circle()
                        .fill(Color.white)
                        .frame(width: 6, height: 6)
                        .offset(
                            x: corner % 2 == 0 ? -min(geometry.size.width, geometry.size.height) * 0.4 : min(geometry.size.width, geometry.size.height) * 0.4,
                            y: corner < 2 ? -min(geometry.size.width, geometry.size.height) * 0.4 : min(geometry.size.width, geometry.size.height) * 0.4
                        )
                }
            }
        }
    }
}

// MARK: - 预览
#Preview {
    QRCodeStyleView(qrCodeContent: "https://www.example.com")
}