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social-app/apps/lib/features/auth/presentation/screens/login_screen.dart
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Dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:formz/formz.dart';
import 'package:go_router/go_router.dart';
import '../../../../app/di/injection.dart';
import '../../../../app/router/app_routes.dart';
import '../../../../core/l10n/l10n.dart';
import '../../../../core/theme/design_tokens.dart';
import '../../../../shared/widgets/app_button.dart';
import '../../../../shared/widgets/banner/app_banner.dart';
import '../../../../shared/widgets/confirm_sheet.dart';
import '../../../../shared/widgets/link_button.dart';
import '../../../../shared/widgets/phone_prefix_selector.dart';
import '../../../../shared/widgets/toast/toast_type.dart';
import '../../data/repositories/auth_repository.dart';
import '../../presentation/bloc/auth_bloc.dart';
import '../../presentation/bloc/auth_event.dart';
import '../../presentation/cubits/login_cubit.dart';
import '../widgets/auth_field.dart';
import '../widgets/auth_page_scaffold.dart';
class LoginScreen extends StatelessWidget {
const LoginScreen({super.key});
@override
Widget build(BuildContext context) {
return BlocProvider(
create: (context) => LoginCubit(sl<AuthRepository>()),
child: const LoginView(),
);
}
}
class LoginView extends StatefulWidget {
const LoginView({super.key});
@override
State<LoginView> createState() => _LoginViewState();
}
class _LoginViewState extends State<LoginView> {
final _phoneController = TextEditingController();
final _codeController = TextEditingController();
bool _agreedToTerms = false;
@override
void dispose() {
_phoneController.dispose();
_codeController.dispose();
super.dispose();
}
Future<void> _handleLogin() async {
if (!_agreedToTerms) {
final confirmed = await _showAgreementDialog();
if (!confirmed || !mounted) return;
setState(() => _agreedToTerms = true);
}
final cubit = context.read<LoginCubit>();
cubit.phoneChanged(_phoneController.text);
cubit.codeChanged(_codeController.text);
if (!cubit.state.isValid) {
return;
}
final response = await cubit.submit();
if (response != null && mounted) {
context.read<AuthBloc>().add(AuthLoggedIn(user: response.user));
context.go(AppRoutes.homeMain);
}
}
Future<void> _handleSendCode() async {
final cubit = context.read<LoginCubit>();
cubit.phoneChanged(_phoneController.text);
final sent = await cubit.sendCode();
if (!mounted || !sent) {
return;
}
}
Future<bool> _showAgreementDialog() async {
final l10n = context.l10n;
return await showConfirmSheet(
context,
title: l10n.authAgreementTitle,
message: l10n.authAgreementMessage,
confirmText: l10n.commonConfirm,
cancelText: l10n.commonCancel,
);
}
Widget _buildAgreementCheckbox() {
final colorScheme = Theme.of(context).colorScheme;
return Center(
child: Row(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Semantics(
label: context.l10n.authAgreementSemantics,
checked: _agreedToTerms,
button: true,
child: InkWell(
borderRadius: BorderRadius.circular(AppRadius.sm),
onTap: () => setState(() => _agreedToTerms = !_agreedToTerms),
child: SizedBox(
width: 44,
height: 44,
child: Center(
child: Container(
width: 20,
height: 20,
margin: const EdgeInsets.only(right: AppSpacing.sm),
decoration: BoxDecoration(
color: _agreedToTerms
? colorScheme.primary
: colorScheme.surface.withValues(alpha: 0),
borderRadius: BorderRadius.circular(4),
border: Border.all(
color: _agreedToTerms
? colorScheme.primary
: colorScheme.onSurfaceVariant,
width: 1.5,
),
),
child: _agreedToTerms
? Icon(
Icons.check,
size: 14,
color: colorScheme.onPrimary,
)
: null,
),
),
),
),
),
RichText(
text: TextSpan(
style: TextStyle(
fontSize: 13,
color: colorScheme.onSurfaceVariant,
),
children: [
TextSpan(text: context.l10n.authAgreementPrefix),
TextSpan(
text: context.l10n.authAgreementTerms,
style: TextStyle(
color: colorScheme.primary,
decoration: TextDecoration.underline,
),
),
TextSpan(text: context.l10n.authAgreementAnd),
TextSpan(
text: context.l10n.authAgreementPrivacy,
style: TextStyle(
color: colorScheme.primary,
decoration: TextDecoration.underline,
),
),
],
),
),
],
),
);
}
@override
Widget build(BuildContext context) {
return AuthPageScaffold(
resizeOnKeyboard: false,
mainContentKey: const Key('login_main_content'),
mainContent: LayoutBuilder(
builder: (context, constraints) {
final bottomInset = MediaQuery.of(context).viewInsets.bottom;
final minContentHeight = constraints.hasBoundedHeight
? constraints.maxHeight
: AppSpacing.none;
return SingleChildScrollView(
padding: EdgeInsets.fromLTRB(
AppSpacing.lg,
0,
AppSpacing.lg,
bottomInset + AppSpacing.lg,
),
child: ConstrainedBox(
constraints: BoxConstraints(minHeight: minContentHeight),
child: Center(
child: ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 320),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const AuthHeroHeader(showBrand: true),
SizedBox(height: AppSpacing.xxl),
BlocBuilder<LoginCubit, LoginState>(
builder: (context, state) {
final fieldError = state.phone.displayError != null
? state.phone.error
: state.code.displayError != null
? state.code.error
: null;
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
AuthSection(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.stretch,
children: [
AuthField(
hint: context.l10n.authPhoneHint,
controller: _phoneController,
onChanged: (value) {
context.read<LoginCubit>().phoneChanged(
value,
);
},
keyboardType: TextInputType.phone,
prefix: PhonePrefixSelector(
value: state.dialCode,
onChanged: (value) {
context
.read<LoginCubit>()
.dialCodeChanged(value);
},
),
inputFormatters: [
FilteringTextInputFormatter.digitsOnly,
LengthLimitingTextInputFormatter(14),
],
),
SizedBox(height: AppSpacing.lg),
AuthField(
hint: context.l10n.authCodeHint,
controller: _codeController,
onChanged: (value) {
context.read<LoginCubit>().codeChanged(
value,
);
},
keyboardType: TextInputType.number,
inputFormatters: [
FilteringTextInputFormatter.digitsOnly,
LengthLimitingTextInputFormatter(6),
],
suffixIcon: Padding(
padding: const EdgeInsets.only(
right: AppSpacing.md,
),
child: LinkButton(
text: state.resendCooldownSeconds > 0
? '${state.resendCooldownSeconds}s'
: context.l10n.authSendCode,
onTap: state.canSendCode
? _handleSendCode
: null,
),
),
),
if (state.errorMessage != null ||
fieldError != null)
Padding(
padding: const EdgeInsets.only(
top: AppSpacing.md,
),
child: AppBanner(
message:
state.errorMessage ?? fieldError!,
type: state.errorMessage != null
? ToastType.error
: ToastType.warning,
title: state.errorMessage != null
? context.l10n.authLoginFailed
: context.l10n.authCheckInput,
),
),
],
),
),
SizedBox(height: AppSpacing.xxl),
AppButton(
text: context.l10n.authLoginOrRegister,
onPressed:
state.status ==
FormzSubmissionStatus.inProgress
? null
: _handleLogin,
isLoading:
state.status ==
FormzSubmissionStatus.inProgress,
),
SizedBox(height: AppSpacing.xxl * 2),
_buildAgreementCheckbox(),
],
);
},
),
],
),
),
),
),
);
},
),
);
}
}