import SwiftUI

// MARK: - 数据类型选择界面
struct CodeTypeSelectionView: View {
    @State private var selectedDataType: DataType = .qrcode
    @State private var selectedBarcodeType: BarcodeType = .ean13
    @State private var selectedQRCodeType: QRCodeType = .text
    
    var body: some View {
        VStack(spacing: 30) {
                // 数据类型选择
                VStack(spacing: 20) {
                    Text("数据类型")
                        .font(.headline)
                        .foregroundColor(.primary)
                        .frame(maxWidth: .infinity, alignment: .leading)
                    
                    HStack(spacing: 0) {
                        ForEach(DataType.allCases, id: \.self) { type in
                            Button(action: {
                                selectedDataType = type
                                // 添加触觉反馈
                                let impactFeedback = UIImpactFeedbackGenerator(style: .light)
                                impactFeedback.impactOccurred()
                            }) {
                                HStack(spacing: 6) {
                                    Image(systemName: type.icon)
                                        .font(.system(size: 16, weight: .medium))
                                        .foregroundColor(selectedDataType == type ? .white : .primary)
                                    
                                    Text(type.displayName)
                                        .font(.system(size: 15, weight: .medium))
                                        .foregroundColor(selectedDataType == type ? .white : .primary)
                                }
                                .frame(maxWidth: .infinity)
                                .padding(.vertical, 12)
                                .background(
                                    RoundedRectangle(cornerRadius: 8)
                                        .fill(selectedDataType == type ? Color.blue : Color(.systemGray6))
                                )
                            }
                            .buttonStyle(PlainButtonStyle())
                        }
                    }
                    .background(
                        RoundedRectangle(cornerRadius: 8)
                            .fill(Color(.systemGray6))
                    )
                    .overlay(
                        RoundedRectangle(cornerRadius: 8)
                            .stroke(Color(.systemGray4), lineWidth: 0.5)
                    )
                }
                .padding(.horizontal, 20)
                
                // 具体类型选择
                VStack(spacing: 20) {
                    if selectedDataType == .barcode {
                        VStack(spacing: 12) {
                            Text("条形码类型")
                                .font(.headline)
                                .foregroundColor(.primary)
                                .frame(maxWidth: .infinity, alignment: .leading)
                            
                            Picker("条形码类型", selection: $selectedBarcodeType) {
                                ForEach(BarcodeType.allCases, id: \.self) { type in
                                    HStack {
                                        Image(systemName: type.icon)
                                        Text(type.displayName)
                                    }
                                    .tag(type)
                                }
                            }
                            .pickerStyle(WheelPickerStyle())
                        }
                    } else {
                        VStack(spacing: 12) {
                            Text("二维码类型")
                                .font(.headline)
                                .foregroundColor(.primary)
                                .frame(maxWidth: .infinity, alignment: .leading)
                            
                            Picker("二维码类型", selection: $selectedQRCodeType) {
                                ForEach(QRCodeType.allCases, id: \.self) { type in
                                    HStack {
                                        Image(systemName: type.icon)
                                        Text(type.displayName)
                                    }
                                    .tag(type)
                                }
                            }
                            .pickerStyle(WheelPickerStyle())
                        }
                    }
                }
                .padding(.horizontal, 20)
                
                Spacer()
                
                // 下一步按钮
                NavigationLink(
                    destination: CreateCodeView(
                        selectedDataType: selectedDataType,
                        selectedBarcodeType: selectedBarcodeType,
                        selectedQRCodeType: selectedQRCodeType
                    )
                ) {
                    HStack(spacing: 8) {
                        Text("下一步")
                            .font(.system(size: 18, weight: .semibold))
                            .foregroundColor(.white)
                        
                        Image(systemName: "arrow.right")
                            .font(.system(size: 16, weight: .medium))
                            .foregroundColor(.white)
                    }
                    .frame(maxWidth: .infinity)
                    .padding(.vertical, 16)
                    .background(
                        RoundedRectangle(cornerRadius: 12)
                            .fill(Color.blue)
                    )
                }
                .padding(.horizontal, 20)
                .padding(.bottom, 30)
            }
            .navigationTitle("选择类型")
            .navigationBarTitleDisplayMode(.inline)
    }
}

#Preview {
    CodeTypeSelectionView()
}