357 lines
11 KiB
Dart
357 lines
11 KiB
Dart
// Author: fruit.com.cn
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../../core/data/remote/api_client.dart';
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import '../../core/data/services/auth_controller.dart';
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import '../../core/platform/haptics.dart';
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import '../../core/theme/app_colors.dart';
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import '../../core/theme/app_theme.dart';
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import '../../l10n/app_localizations.dart';
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import 'auth_logic.dart';
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const double _minTapTarget = 44;
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/// 登录 / 注册页：邮箱 + 密码。
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class AuthPage extends StatefulWidget {
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const AuthPage({super.key, this.signUpMode = false});
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final bool signUpMode;
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@override
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State<AuthPage> createState() => _AuthPageState();
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}
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class _AuthPageState extends State<AuthPage> {
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late AuthLogic _logic;
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late final TextEditingController _emailController;
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late final TextEditingController _passwordController;
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late final FocusNode _emailFocus;
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late final FocusNode _passwordFocus;
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bool _obscurePassword = true;
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@override
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void initState() {
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super.initState();
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_logic = AuthLogic(signUpMode: widget.signUpMode);
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_emailController = TextEditingController();
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_passwordController = TextEditingController();
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_emailFocus = FocusNode(debugLabel: 'auth-email-focus');
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_passwordFocus = FocusNode(debugLabel: 'auth-password-focus');
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}
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@override
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void dispose() {
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_emailController.dispose();
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_passwordController.dispose();
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_emailFocus.dispose();
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_passwordFocus.dispose();
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super.dispose();
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}
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String _errorText(AppLocalizations l10n, AuthFieldError error) {
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switch (error) {
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case AuthFieldError.emailRequired:
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return l10n.authEmailRequired;
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case AuthFieldError.emailInvalid:
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return l10n.authEmailInvalid;
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case AuthFieldError.passwordRequired:
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return l10n.authPasswordRequired;
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case AuthFieldError.passwordLength:
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return l10n.authPasswordLength;
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case AuthFieldError.passwordWeak:
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return l10n.authPasswordWeak;
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}
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}
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Future<void> _submit() async {
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final l10n = AppLocalizations.of(context)!;
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final invalid = _logic.validate();
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if (invalid != null) {
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setState(() => _logic.errorMessage = _errorText(l10n, invalid));
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return;
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}
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unawaited(context.read<Haptics>().lightImpact());
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FocusScope.of(context).unfocus();
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setState(() {
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_logic.busy = true;
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_logic.errorMessage = null;
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});
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final auth = context.read<AuthController>();
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try {
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if (_logic.signUpMode) {
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await auth.register(
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email: _logic.normalizedEmail,
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password: _logic.password,
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);
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} else {
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await auth.signIn(
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email: _logic.normalizedEmail,
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password: _logic.password,
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);
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}
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if (!mounted) return;
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Navigator.of(context).maybePop();
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} on ApiException catch (error) {
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setState(() => _logic.errorMessage = error.message);
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} catch (_) {
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setState(() => _logic.errorMessage = l10n.authNetworkError);
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} finally {
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if (mounted) setState(() => _logic.busy = false);
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}
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}
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@override
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Widget build(BuildContext context) {
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final l10n = AppLocalizations.of(context)!;
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return Theme(
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data: AppTheme.dark(),
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child: Scaffold(
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resizeToAvoidBottomInset: true,
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backgroundColor: AppColors.ink,
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appBar: AppBar(
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backgroundColor: AppColors.ink,
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elevation: 0,
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foregroundColor: AppColors.onPrimary,
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title: Text(_logic.signUpMode ? l10n.signUp : l10n.signIn),
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),
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body: SafeArea(
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child: AutofillGroup(
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child: ListView(
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key: const Key('auth-scroll'),
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keyboardDismissBehavior: ScrollViewKeyboardDismissBehavior.onDrag,
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padding: EdgeInsets.fromLTRB(
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20,
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12,
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20,
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28 + MediaQuery.viewInsetsOf(context).bottom,
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),
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children: [
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_AuthBrand(tagline: l10n.authBrandTagline),
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const SizedBox(height: 26),
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Text(
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_logic.signUpMode
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? l10n.authSignUpTitle
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: l10n.authSignInTitle,
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style: const TextStyle(
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color: AppColors.onPrimary,
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fontSize: 24,
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fontWeight: FontWeight.w800,
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),
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),
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const SizedBox(height: 6),
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Text(
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l10n.authSubtitle,
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style: const TextStyle(color: AppColors.muted, fontSize: 13),
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),
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const SizedBox(height: 22),
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_emailField(l10n),
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const SizedBox(height: 14),
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_passwordField(l10n),
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if (_logic.errorMessage != null) ...[
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const SizedBox(height: 12),
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_AuthError(message: _logic.errorMessage!),
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],
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const SizedBox(height: 22),
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_submitButton(l10n),
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const SizedBox(height: 10),
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_switchModeButton(l10n),
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],
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),
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),
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),
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),
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);
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}
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Widget _emailField(AppLocalizations l10n) => _field(
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child: TextField(
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key: const Key('auth-email'),
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controller: _emailController,
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focusNode: _emailFocus,
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enabled: !_logic.busy,
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autofocus: true,
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keyboardType: TextInputType.emailAddress,
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textInputAction: TextInputAction.next,
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autofillHints: const [AutofillHints.email],
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onChanged: (value) => _logic.email = value,
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onSubmitted: (_) => _passwordFocus.requestFocus(),
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style: const TextStyle(color: AppColors.onPrimary, fontSize: 15),
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decoration: _decoration(l10n.authEmailLabel, 'name@example.com'),
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),
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);
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Widget _passwordField(AppLocalizations l10n) => _field(
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child: TextField(
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key: const Key('auth-password'),
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controller: _passwordController,
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focusNode: _passwordFocus,
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enabled: !_logic.busy,
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obscureText: _obscurePassword,
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keyboardType: TextInputType.visiblePassword,
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textInputAction: TextInputAction.done,
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autofillHints: const [AutofillHints.password],
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onChanged: (value) => _logic.password = value,
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onSubmitted: (_) => _submit(),
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style: const TextStyle(color: AppColors.onPrimary, fontSize: 15),
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decoration: _decoration(
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l10n.authPasswordLabel,
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l10n.authPasswordHint,
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suffix: IconButton(
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key: const Key('auth-password-visibility'),
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constraints: const BoxConstraints.tightFor(
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width: _minTapTarget,
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height: _minTapTarget,
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),
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tooltip: _obscurePassword ? l10n.showPassword : l10n.hidePassword,
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onPressed: _logic.busy
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? null
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: () => setState(() => _obscurePassword = !_obscurePassword),
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icon: Icon(
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_obscurePassword
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? Icons.visibility_outlined
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: Icons.visibility_off_outlined,
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color: AppColors.muted,
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),
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),
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),
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),
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);
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Widget _field({required Widget child}) =>
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Column(crossAxisAlignment: CrossAxisAlignment.start, children: [child]);
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InputDecoration _decoration(String label, String hint, {Widget? suffix}) {
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final scheme = Theme.of(context).colorScheme;
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return InputDecoration(
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labelText: label,
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hintText: hint,
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hintStyle: TextStyle(color: scheme.onSurfaceVariant, fontSize: 14),
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suffixIcon: suffix,
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filled: true,
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fillColor: AppColors.card,
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contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 17),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: scheme.primary, width: 1.5),
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),
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);
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}
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Widget _submitButton(AppLocalizations l10n) => SizedBox(
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height: 50,
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child: FilledButton(
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key: const Key('auth-submit'),
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onPressed: _logic.busy ? null : _submit,
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style: FilledButton.styleFrom(
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(25)),
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),
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child: _logic.busy
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? const SizedBox.square(
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dimension: 18,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: AppColors.onPrimary,
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),
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)
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: Text(
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_logic.signUpMode ? l10n.signUp : l10n.signIn,
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style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w700),
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),
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),
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);
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Widget _switchModeButton(AppLocalizations l10n) => TextButton(
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key: const Key('auth-switch-mode'),
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style: TextButton.styleFrom(
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minimumSize: const Size(0, _minTapTarget),
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foregroundColor: AppColors.blueSoft,
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),
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onPressed: _logic.busy ? null : () => setState(() => _logic.toggleMode()),
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child: Text(
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_logic.signUpMode ? l10n.authSwitchToSignIn : l10n.authSwitchToSignUp,
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style: const TextStyle(fontSize: 13),
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),
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);
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}
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class _AuthBrand extends StatelessWidget {
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const _AuthBrand({required this.tagline});
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final String tagline;
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@override
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Widget build(BuildContext context) {
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return Row(
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children: [
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Container(
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width: 48,
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height: 48,
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decoration: const BoxDecoration(
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color: AppColors.blue,
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shape: BoxShape.circle,
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),
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child: const Icon(
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Icons.play_arrow_rounded,
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color: AppColors.onPrimary,
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size: 30,
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),
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),
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const SizedBox(width: 12),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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AppLocalizations.of(context)!.appName,
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style: const TextStyle(
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color: AppColors.onPrimary,
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fontSize: 20,
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fontWeight: FontWeight.w800,
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),
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),
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const SizedBox(height: 2),
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Text(
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tagline,
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style: const TextStyle(color: AppColors.blueSoft, fontSize: 12),
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),
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],
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),
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),
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],
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);
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}
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}
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class _AuthError extends StatelessWidget {
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const _AuthError({required this.message});
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final String message;
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@override
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Widget build(BuildContext context) {
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final color = Theme.of(context).colorScheme.error;
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return Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Icon(Icons.error_outline, color: color, size: 18),
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const SizedBox(width: 6),
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Expanded(
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child: Text(
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message,
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key: const Key('auth-error'),
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style: TextStyle(color: color, fontSize: 13),
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),
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),
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],
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);
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}
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}
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