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482
suixinkan/Features/Auth/Views/LoginView.swift
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482
suixinkan/Features/Auth/Views/LoginView.swift
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//
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// LoginView.swift
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// suixinkan
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//
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// Created by Codex on 2026/6/18.
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//
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import SwiftUI
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/// 登录页视图，负责展示登录表单、协议确认和多账号选择入口。
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struct LoginView: View {
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@Environment(AppSession.self) private var appSession
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@Environment(AccountContext.self) private var accountContext
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@Environment(PermissionContext.self) private var permissionContext
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@Environment(ToastCenter.self) private var toastCenter
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@Environment(AuthAPI.self) private var authAPI
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@Environment(ProfileAPI.self) private var profileAPI
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@Environment(AccountContextAPI.self) private var accountContextAPI
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@Environment(AuthSessionCoordinator.self) private var authSessionCoordinator
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@Environment(\.horizontalSizeClass) private var horizontalSizeClass
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@State private var viewModel = LoginViewModel()
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@FocusState private var focusedField: LoginField?
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private var contentMaxWidth: CGFloat {
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horizontalSizeClass == .regular ? 560 : .infinity
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}
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var body: some View {
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NavigationStack {
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GeometryReader { proxy in
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ZStack(alignment: .top) {
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Image("LoginBackground")
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.resizable()
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.scaledToFill()
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.ignoresSafeArea()
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.contentShape(Rectangle())
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.onTapGesture {
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focusedField = nil
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}
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ScrollView(.vertical) {
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loginContent
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.frame(maxWidth: contentMaxWidth, alignment: .top)
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.padding(.horizontal, horizontalPadding(for: proxy.size.width))
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.padding(.top, topPadding(for: proxy))
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.padding(.bottom, AppMetrics.Spacing.xxLarge)
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.frame(maxWidth: .infinity, alignment: .top)
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}
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.scrollDismissesKeyboard(.interactively)
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}
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}
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.background(Color(hex: 0x0B1220).ignoresSafeArea())
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.toolbar(.hidden, for: .navigationBar)
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.sheet(isPresented: showsAgreementSheetBinding) {
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LoginAgreementConsentSheet(
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onOpenAgreement: { title in
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toastCenter.show("\(title)页面待接入")
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},
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onAgreeAndContinue: {
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viewModel.acceptAgreement()
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loginAction()
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}
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)
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}
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.sheet(item: pendingAccountSelectionBinding) { payload in
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AccountSelectionView(
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payload: payload,
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isLoading: viewModel.isSelectingAccount,
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onCancel: {
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viewModel.clearPendingAccountSelection()
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},
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onConfirm: { account in
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selectAccount(account)
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}
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)
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}
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}
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.onChange(of: viewModel.username) { _, _ in
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viewModel.normalizeUsernameCountryCodeIfNeeded()
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dismissLoginToastIfNeeded()
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}
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.onChange(of: viewModel.password) { _, _ in
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dismissLoginToastIfNeeded()
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}
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.task {
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viewModel.applyPreferences(authSessionCoordinator.loginPreferences())
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}
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}
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private var loginContent: some View {
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VStack(alignment: .leading, spacing: AppMetrics.Spacing.xxLarge) {
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Text("欢迎使用\n随心瞰商家版")
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.font(.system(size: AppMetrics.FontSize.largeTitle, weight: .semibold))
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.foregroundStyle(.white)
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.lineSpacing(AppMetrics.LineSpacing.title)
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.accessibilityIdentifier("login.title")
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loginCard
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}
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}
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private var loginCard: some View {
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VStack(spacing: 0) {
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VStack(spacing: AppMetrics.Spacing.xSmall) {
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textInput(title: "请输入手机号", text: usernameBinding, icon: "person")
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passwordInput
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}
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Spacer().frame(height: AppMetrics.ControlSize.checkboxTapArea)
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agreementRow
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Spacer().frame(height: AppMetrics.Spacing.mediumLarge)
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Button(action: loginAction) {
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HStack {
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if viewModel.isLoading {
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ProgressView()
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.tint(.white)
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.frame(width: AppMetrics.ControlSize.progressWidth)
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} else {
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Spacer()
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.frame(width: AppMetrics.ControlSize.progressWidth)
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}
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Text("登录")
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.font(.system(size: AppMetrics.FontSize.body, weight: .medium))
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.foregroundStyle(.white)
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Spacer()
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.frame(width: AppMetrics.ControlSize.progressWidth)
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}
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.frame(maxWidth: .infinity)
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.frame(height: AppMetrics.ControlSize.primaryButtonHeight)
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.background(viewModel.canSubmit ? AppDesign.primary : Color.gray)
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.clipShape(RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.button))
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}
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.disabled(!viewModel.canSubmit || viewModel.isLoading)
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.accessibilityIdentifier("login.submit")
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}
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.padding(AppMetrics.Spacing.medium)
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.background(.white, in: RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.card))
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.shadow(color: .black.opacity(0.12), radius: 18, x: 0, y: 8)
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}
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/// 计算登录内容相对安全区的顶部距离。
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private func topPadding(for proxy: GeometryProxy) -> CGFloat {
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max(proxy.safeAreaInsets.top + 24, 72)
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}
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/// 根据屏幕宽度计算登录内容的水平边距。
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private func horizontalPadding(for width: CGFloat) -> CGFloat {
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min(max(width * 0.07, 20), 30)
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}
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/// 处理登录按钮点击，完成表单校验并启动登录流程。
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private func loginAction() {
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focusedField = nil
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if let validationError = viewModel.validateForLogin() {
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if validationError == .privacyUnchecked {
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viewModel.showsAgreementSheet = true
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} else {
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toastCenter.show(validationError.message)
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focusedField = validationError.focusField
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}
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return
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}
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Task {
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do {
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let resolution = try await viewModel.login(authAPI: authAPI)
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switch resolution {
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case let .completed(response):
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await completeLogin(with: response)
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case .needsAccountSelection:
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break
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}
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} catch is CancellationError {
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// Keep cancellation silent; the current task was abandoned by SwiftUI.
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} catch {
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toastCenter.show(error.localizedDescription)
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}
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}
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}
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/// 处理账号选择页的确认动作，并使用所选账号换取正式 token。
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private func selectAccount(_ account: AccountSwitchAccount) {
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Task {
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do {
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let response = try await viewModel.selectAccount(account, authAPI: authAPI)
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await completeLogin(with: response)
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} catch is CancellationError {
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// Keep cancellation silent; the current task was abandoned by SwiftUI.
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} catch {
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toastCenter.show(error.localizedDescription)
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}
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}
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}
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/// 将最终登录响应写入全局会话和账号上下文。
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private func completeLogin(with response: V9AuthResponse) async {
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do {
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try await authSessionCoordinator.completeLogin(
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with: response,
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username: viewModel.normalizedUsername,
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privacyAgreementAccepted: viewModel.privacyChecked,
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appSession: appSession,
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accountContext: accountContext,
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permissionContext: permissionContext,
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profileAPI: profileAPI,
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accountContextAPI: accountContextAPI
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)
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} catch {
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toastCenter.show(error.localizedDescription)
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}
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}
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/// 输入内容变化后清除当前 Toast，避免旧错误提示停留。
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private func dismissLoginToastIfNeeded() {
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toastCenter.dismiss()
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}
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/// 构造通用文本输入框，当前用于手机号输入。
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private func textInput(title: String, text: Binding<String>, icon: String) -> some View {
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HStack(spacing: AppMetrics.Spacing.xSmall) {
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Image(systemName: icon)
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.font(.system(size: AppMetrics.ControlSize.smallIcon))
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.foregroundStyle(AppDesign.textSecondary)
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TextField(title, text: text)
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.font(.system(size: AppMetrics.FontSize.body))
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.textFieldStyle(.plain)
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.foregroundStyle(AppDesign.textPrimary)
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.tint(AppDesign.primary)
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.keyboardType(.phonePad)
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.textContentType(.telephoneNumber)
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.textInputAutocapitalization(.never)
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.autocorrectionDisabled(true)
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.submitLabel(.next)
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.focused($focusedField, equals: .username)
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.onSubmit {
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focusedField = .password
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}
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.accessibilityIdentifier("login.username")
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}
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.padding(.horizontal, AppMetrics.Spacing.medium)
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.frame(height: AppMetrics.ControlSize.inputHeight)
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.background(Color(hex: 0xF1F5F9), in: RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.input))
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.overlay(
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RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.input)
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.stroke(Color(hex: 0xDDE3EA), lineWidth: 1)
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)
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.contentShape(Rectangle())
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.onTapGesture {
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focusedField = .username
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}
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}
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private var passwordInput: some View {
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HStack(spacing: AppMetrics.Spacing.xSmall) {
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Image(systemName: "lock")
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.font(.system(size: AppMetrics.ControlSize.smallIcon))
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.foregroundStyle(AppDesign.textSecondary)
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Group {
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if viewModel.showsPassword {
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TextField("请输入密码", text: passwordBinding)
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} else {
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SecureField("请输入密码", text: passwordBinding)
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}
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}
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.font(.system(size: AppMetrics.FontSize.body))
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.textFieldStyle(.plain)
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.foregroundStyle(AppDesign.textPrimary)
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.tint(AppDesign.primary)
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.textInputAutocapitalization(.never)
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.autocorrectionDisabled(true)
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.submitLabel(.go)
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.focused($focusedField, equals: .password)
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.onSubmit {
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if viewModel.canSubmit && !viewModel.isLoading {
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loginAction()
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}
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}
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Button {
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viewModel.showsPassword.toggle()
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} label: {
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Image(viewModel.showsPassword ? "LoginPwdVisible" : "LoginPwdInvisible")
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.resizable()
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.frame(width: AppMetrics.ControlSize.passwordIcon, height: AppMetrics.ControlSize.passwordIcon)
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.frame(width: AppMetrics.ControlSize.iconTapArea, height: AppMetrics.ControlSize.iconTapArea)
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}
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.buttonStyle(.plain)
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}
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.padding(.horizontal, AppMetrics.Spacing.medium)
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.frame(height: AppMetrics.ControlSize.inputHeight)
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.background(Color(hex: 0xF1F5F9), in: RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.input))
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.overlay(
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RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.input)
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.stroke(Color(hex: 0xDDE3EA), lineWidth: 1)
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)
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.contentShape(Rectangle())
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.onTapGesture {
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focusedField = .password
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}
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.accessibilityIdentifier("login.password")
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}
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private var agreementRow: some View {
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HStack(alignment: .top, spacing: AppMetrics.Spacing.xSmall) {
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Button {
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viewModel.privacyChecked.toggle()
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} label: {
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Image(viewModel.privacyChecked ? "LoginCheckboxChecked" : "LoginCheckboxUnchecked")
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.resizable()
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.frame(width: AppMetrics.ControlSize.checkboxIcon, height: AppMetrics.ControlSize.checkboxIcon)
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.frame(width: AppMetrics.ControlSize.checkboxTapArea, height: AppMetrics.ControlSize.checkboxTapArea)
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.contentShape(Rectangle())
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}
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.buttonStyle(.plain)
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.accessibilityIdentifier("login.privacy")
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agreementText
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.padding(.top, AppMetrics.Spacing.xxSmall)
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}
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.frame(maxWidth: .infinity, alignment: .topLeading)
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}
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private var agreementText: some View {
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ViewThatFits(in: .horizontal) {
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HStack(spacing: 0) {
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agreementPrefix
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userAgreementButton
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agreementSeparator
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privacyPolicyButton
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}
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VStack(alignment: .leading, spacing: AppMetrics.Spacing.xxSmall) {
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HStack(spacing: 0) {
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agreementPrefix
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userAgreementButton
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}
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HStack(spacing: 0) {
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agreementSeparator
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privacyPolicyButton
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}
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}
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}
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.font(.system(size: AppMetrics.FontSize.subheadline))
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}
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private var agreementPrefix: some View {
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Text("已阅读并同意")
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.foregroundStyle(Color(hex: 0x666666))
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}
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private var agreementSeparator: some View {
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Text("与")
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.foregroundStyle(Color(hex: 0x666666))
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}
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private var userAgreementButton: some View {
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Button("《用户协议》") {
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toastCenter.show("用户协议页面待接入")
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}
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.foregroundStyle(Color(hex: 0x208BFF))
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.accessibilityIdentifier("login.userAgreement")
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}
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private var privacyPolicyButton: some View {
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Button("《隐私政策》") {
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toastCenter.show("隐私政策页面待接入")
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}
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.foregroundStyle(Color(hex: 0x208BFF))
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.accessibilityIdentifier("login.privacyPolicy")
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}
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private var usernameBinding: Binding<String> {
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Binding(
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get: { viewModel.username },
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set: { viewModel.username = $0 }
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)
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}
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private var passwordBinding: Binding<String> {
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Binding(
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get: { viewModel.password },
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set: { viewModel.password = $0 }
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)
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}
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private var showsAgreementSheetBinding: Binding<Bool> {
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Binding(
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get: { viewModel.showsAgreementSheet },
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set: { viewModel.showsAgreementSheet = $0 }
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)
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}
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private var pendingAccountSelectionBinding: Binding<AccountSelectionPayload?> {
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Binding(
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get: { viewModel.pendingAccountSelection },
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set: { viewModel.pendingAccountSelection = $0 }
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)
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}
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}
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/// 协议确认弹窗，负责在用户未勾选协议时引导确认。
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private struct LoginAgreementConsentSheet: View {
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private static let compactDetent = PresentationDetent.height(240)
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let onOpenAgreement: (String) -> Void
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let onAgreeAndContinue: () -> Void
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var body: some View {
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VStack(spacing: AppMetrics.Spacing.sheet) {
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Text("请先阅读并同意相关协议")
|
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.font(.system(size: AppMetrics.FontSize.title3, weight: .semibold))
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.foregroundStyle(AppDesign.textPrimary)
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.frame(maxWidth: .infinity, alignment: .center)
|
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|
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agreementDescription
|
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|
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Button(action: onAgreeAndContinue) {
|
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Text("同意并继续")
|
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.font(.system(size: AppMetrics.FontSize.body, weight: .medium))
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.foregroundStyle(.white)
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.frame(maxWidth: .infinity)
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.frame(height: AppMetrics.ControlSize.sheetButtonHeight)
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.background(AppDesign.primary, in: RoundedRectangle(cornerRadius: AppMetrics.CornerRadius.button))
|
||||
}
|
||||
.buttonStyle(.plain)
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.padding(.top, AppMetrics.Spacing.large)
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.accessibilityIdentifier("login.agreement.continue")
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}
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.padding(.horizontal, AppMetrics.Spacing.large)
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.padding(.top, AppMetrics.Spacing.sheet)
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.padding(.bottom, AppMetrics.Spacing.mediumLarge)
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.presentationDetents([Self.compactDetent])
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}
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||||
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private var agreementDescription: some View {
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VStack(spacing: AppMetrics.Spacing.small) {
|
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Text("为了保障你的账号安全和服务体验，请阅读并同意")
|
||||
.font(.system(size: AppMetrics.FontSize.subheadline))
|
||||
.foregroundStyle(AppDesign.textSecondary)
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||||
.multilineTextAlignment(.center)
|
||||
|
||||
HStack(spacing: 0) {
|
||||
agreementToken(title: "用户协议")
|
||||
Text("和")
|
||||
.font(.system(size: AppMetrics.FontSize.subheadline))
|
||||
.foregroundStyle(AppDesign.textSecondary)
|
||||
agreementToken(title: "隐私政策")
|
||||
}
|
||||
}
|
||||
.frame(maxWidth: .infinity)
|
||||
}
|
||||
|
||||
/// 构造协议链接文本按钮。
|
||||
private func agreementToken(title: String) -> some View {
|
||||
Button {
|
||||
onOpenAgreement(title)
|
||||
} label: {
|
||||
Text("《\(title)》")
|
||||
.font(.system(size: AppMetrics.FontSize.subheadline, weight: .medium))
|
||||
.foregroundStyle(Color(hex: 0x208BFF))
|
||||
}
|
||||
.buttonStyle(.plain)
|
||||
}
|
||||
}
|
||||
|
||||
#Preview {
|
||||
LoginView()
|
||||
.environment(AppSession())
|
||||
.environment(AccountContext())
|
||||
.environment(PermissionContext())
|
||||
.environment(ToastCenter())
|
||||
.environment(AuthAPI(client: APIClient()))
|
||||
.environment(ProfileAPI(client: APIClient()))
|
||||
.environment(AccountContextAPI(client: APIClient()))
|
||||
.environment(AuthSessionCoordinator())
|
||||
}
|
||||
Reference in New Issue
Block a user