import SwiftUI

struct RouteSelectionView: View {
    @EnvironmentObject var appState: AppState
    @Environment(\.dismiss) private var dismiss
    
    @State private var routes: [Route] = []
    @State private var isLoading = true
    
    var body: some View {
        VStack {
            if isLoading {
                ProgressView(
                    appState.selectedLanguage == "ru" ? "Загрузка маршрутов..." :
                    appState.selectedLanguage == "zh" ? "正在加载路线..." :
                    "Loading routes..."
                )
                .padding()
            } else {
                List(routes, id: \.id) { route in
                    Button(action: {
                        appState.selectedRoute = route
                        dismiss()
                    }) {
                        HStack {
                            Text("\(route.routeNumber)")
                                .font(.headline)
                        }
                        .padding(.vertical, 8)
                    }
                }
                .listStyle(PlainListStyle())
            }
        }
        .navigationTitle(
            appState.selectedLanguage == "ru" ? "Выберите маршрут" :
            appState.selectedLanguage == "zh" ? "选择路线" :
            "Select route"
        )
        .onAppear {
            Task {
                await fetchRoutes()
            }
        }
        .onChange(of: appState.selectedLanguage) { _ in
            // просто перерисовываем view, navigationTitle автоматически обновится
        }
    }
    
    private func fetchRoutes() async {
        isLoading = true
        defer { isLoading = false }
        
        guard let url = URL(string: "https://white-nights.krbl.ru/services/content/route") else { return }
        
        do {
            let (data, _) = try await URLSession.shared.data(from: url)
            let fetchedRoutes = try JSONDecoder().decode([Route].self, from: data)
            routes = fetchedRoutes
        } catch {
            print("Ошибка загрузки маршрутов: \(error)")
        }
    }
}