//
//  ContentView.swift
//  MyQrCode
//
//  Created by dev on 2025/8/19.
//

import SwiftUI

struct ContentView: View {
    @State private var showScanner = false
    @State private var scannedCode: String?
    @State private var showLanguageSettings = false
    @ObservedObject private var languageManager = LanguageManager.shared
    
    var body: some View {
        NavigationView {
            VStack(spacing: 30) {
                HStack {
                    Spacer()
                    Button(action: {
                        showLanguageSettings = true
                    }) {
                        HStack(spacing: 4) {
                            Text(languageManager.currentLanguage.flag)
                            Text(languageManager.currentLanguage.displayName)
                                .font(.caption)
                        }
                        .padding(.horizontal, 12)
                        .padding(.vertical, 6)
                        .background(Color.blue.opacity(0.1))
                        .cornerRadius(15)
                    }
                }
                .padding(.horizontal)
                
                Image(systemName: "qrcode.viewfinder")
                    .font(.system(size: 100))
                    .foregroundColor(.blue)
                
                Text("main_title".localized)
                    .font(.largeTitle)
                    .fontWeight(.bold)
                
                if let code = scannedCode {
                    VStack(spacing: 10) {
                        Text("scan_result".localized)
                            .font(.headline)
                        Text(code)
                            .font(.body)
                            .padding()
                            .background(Color.gray.opacity(0.1))
                            .cornerRadius(8)
                    }
                }
                
                Button(action: {
                    showScanner = true
                }) {
                    HStack {
                        Image(systemName: "camera")
                        Text("start_scan_button".localized)
                    }
                    .font(.title2)
                    .foregroundColor(.white)
                    .padding()
                    .background(Color.blue)
                    .cornerRadius(10)
                }
                
                Spacer()
            }
            .padding()
            .navigationTitle("app_title".localized)
            .sheet(isPresented: $showScanner) {
                ScannerView()
                    .onReceive(NotificationCenter.default.publisher(for: .scannerDidScanCode)) { notification in
                        if let code = notification.object as? String {
                            scannedCode = code
                            showScanner = false
                        }
                    }
            }
            .sheet(isPresented: $showLanguageSettings) {
                LanguageSettingsView()
            }
            .onReceive(NotificationCenter.default.publisher(for: .languageChanged)) { _ in
                // 语言变化时刷新界面
            }
        }
    }
}

#if DEBUG
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
#endif