e-party-iOS/yana/Views/LoginView.swift

import SwiftUI
import ComposableArchitecture
import Perception

struct LoginView: View {
    let store: StoreOf<LoginFeature>
    let onLoginSuccess: () -> Void
    
    // 使用本地@State管理UI状态
    @State private var showIDLogin: Bool = false
    @State private var showEmailLogin: Bool = false
    @State private var showLanguageSettings: Bool = false
    @State private var showUserAgreement: Bool = false
    @State private var showPrivacyPolicy: Bool = false
    @State private var isAgreementAccepted: Bool = true // 默认选中
    @State private var showAgreementAlert: Bool = false
    
    var body: some View {
        NavigationStack {
            GeometryReader { geometry in
                ZStack {
                    backgroundView
                    
                    VStack(spacing: 0) {
                        
                        Image("top")
                            .resizable()
                            .aspectRatio(375/400, contentMode: .fit)
                            .frame(maxWidth: .infinity)

                        HStack {
                            Text(LocalizedString("login.app_title", comment: ""))
                                .font(FontManager.adaptedFont(.bayonRegular, designSize: 56, for: geometry.size.width))
                                .foregroundColor(.white)
                                .padding(.leading, 20)
                            Spacer()
                        }
                        .padding(.bottom, 20) // 距离 top 图片底部的间距
                        
                        Spacer()
                        
                        bottomSection
                    }
                    
                    // 语言设置按钮 - 固定在页面右上角
                    languageSettingsButton
                        .position(x: geometry.size.width - 40, y: 60)
                    
                    APILoadingEffectView()
                }
            }
            .ignoresSafeArea()
            .navigationBarHidden(true)
            .navigationDestination(isPresented: $showIDLogin) {
                IDLoginView(
                    store: store.scope(
                        state: \.idLoginState,
                        action: \.idLogin
                    ),
                    onBack: {
                        showIDLogin = false
                    },
                    showIDLogin: $showIDLogin
                )
                .navigationBarHidden(true)
            }
            .navigationDestination(isPresented: $showEmailLogin) {
                EMailLoginView(
                    store: store.scope(
                        state: \.emailLoginState,
                        action: \.emailLogin
                    ),
                    onBack: {
                        showEmailLogin = false
                    },
                    showEmailLogin: $showEmailLogin
                )
                .navigationBarHidden(true)
            }
            .sheet(isPresented: $showLanguageSettings) {
                LanguageSettingsView(isPresented: $showLanguageSettings)
            }
            .webView(
                isPresented: $showUserAgreement,
                url: APIConfiguration.webURL(for: .userAgreement)
            )
            .webView(
                isPresented: $showPrivacyPolicy,
                url: APIConfiguration.webURL(for: .privacyPolicy)
            )
            .alert(LocalizedString("login.agreement_alert_title", comment: ""), isPresented: $showAgreementAlert) {
                Button(LocalizedString("login.agreement_alert_confirm", comment: "")) { }
            } message: {
                Text(LocalizedString("login.agreement_alert_message", comment: ""))
            }
            .onChange(of: store.isAnyLoginCompleted) { _, isAnyLoginCompleted in
                if isAnyLoginCompleted {
                    onLoginSuccess()
                }
            }
            .onChange(of: showIDLogin) { _, showIDLogin in
                if showIDLogin == false && store.isAnyLoginCompleted {
                    onLoginSuccess()
                }
            }
            .onChange(of: showEmailLogin) { _, showEmailLogin in
                if showEmailLogin == false && store.isAnyLoginCompleted {
                    onLoginSuccess()
                }
            }
        }
    }
    
    // MARK: - 子视图
    
    private var backgroundView: some View {
        Image("bg")
            .resizable()
            .aspectRatio(contentMode: .fill)
            .ignoresSafeArea(.all)
    }
    
    private var bottomSection: some View {
        VStack(spacing: 20) {
            loginButtons
            userAgreementComponent
        }
        .padding(.horizontal, 28)
        .padding(.bottom, 48)
    }
    
    private var loginButtons: some View {
        VStack(spacing: 20) {
            LoginButton(
                iconName: "person.circle",
                iconColor: .blue,
                title: LocalizedString("login.id_login", comment: ""),
                action: {
                    if isAgreementAccepted {
                        showIDLogin = true
                    } else {
                        showAgreementAlert = true
                    }
                }
            )
            
            LoginButton(
                iconName: "envelope",
                iconColor: .green,
                title: LocalizedString("login.email_login", comment: ""),
                action: {
                    if isAgreementAccepted {
                        showEmailLogin = true
                    } else {
                        showAgreementAlert = true
                    }
                }
            )
        }
    }
    
    private var languageSettingsButton: some View {
        Button(action: {
            showLanguageSettings = true
        }) {
            Image(systemName: "globe")
                .font(.system(size: 20))
                .foregroundColor(.white.opacity(0.8))
        }
    }
    
    private var userAgreementComponent: some View {
        UserAgreementComponent(
            isAgreed: $isAgreementAccepted,
            onAgreementTap: {
                Task { @MainActor in
                    showUserAgreement = true
                }
            },
            onPolicyTap: {
                Task { @MainActor in
                    showPrivacyPolicy = true
                }
            }
        )
        .frame(height: 40)
        .padding(.horizontal, -20)
    }
}

//#Preview {
//    LoginView(
//        store: Store(
//            initialState: LoginFeature.State()
//        ) {
//            LoginFeature()
//        },
//        onLoginSuccess: {}
//    )
//}