feat:implementacion grafica 2.0
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25030248hasel
411
lib/features/auth/presentation/screens/login_screen.dart
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411
lib/features/auth/presentation/screens/login_screen.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import '../../../../core/theme/app_theme.dart';
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import '../bloc/auth_bloc.dart';
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import '../bloc/auth_event.dart';
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import '../bloc/auth_state.dart';
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import '../widgets/privacy_notice_card.dart';
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/// Pantalla de inicio de sesión — MVP WasteNotify.
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///
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/// Diseño: Limpio, institucional, con paleta verde-tierra.
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/// Incluye mensajería preventiva integrada de forma no intrusiva.
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///
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/// Credenciales de demo:
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/// Ciudadano: ciudadano@ejemplo.com / password123
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/// Operador: operador@ejemplo.com / operador456
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/// Teléfono: 5551234567 / pass1234
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class LoginScreen extends StatefulWidget {
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const LoginScreen({super.key});
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@override
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State<LoginScreen> createState() => _LoginScreenState();
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}
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class _LoginScreenState extends State<LoginScreen>
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with SingleTickerProviderStateMixin {
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final _formKey = GlobalKey<FormState>();
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final _identifierController = TextEditingController();
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final _passwordController = TextEditingController();
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bool _obscurePassword = true;
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late final AnimationController _animController;
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late final Animation<double> _fadeAnim;
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late final Animation<Offset> _slideAnim;
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@override
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void initState() {
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super.initState();
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_animController = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 700),
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);
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_fadeAnim = CurvedAnimation(
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parent: _animController,
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curve: Curves.easeOut,
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);
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_slideAnim = Tween<Offset>(
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begin: const Offset(0, 0.06),
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end: Offset.zero,
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).animate(CurvedAnimation(
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parent: _animController,
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curve: Curves.easeOutCubic,
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));
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_animController.forward();
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}
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@override
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void dispose() {
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_animController.dispose();
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_identifierController.dispose();
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_passwordController.dispose();
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super.dispose();
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}
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void _submit(BuildContext context) {
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if (_formKey.currentState?.validate() ?? false) {
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context.read<AuthBloc>().add(
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AuthLoginRequested(
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identifier: _identifierController.text,
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password: _passwordController.text,
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),
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);
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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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return BlocListener<AuthBloc, AuthState>(
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listener: (context, state) {
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if (state is AuthFailure) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Row(
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children: [
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const Icon(Icons.error_outline, color: Colors.white, size: 18),
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const SizedBox(width: 10),
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Expanded(child: Text(state.message)),
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],
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),
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backgroundColor: AppTheme.errorRed,
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),
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);
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}
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},
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child: Scaffold(
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backgroundColor: AppTheme.warmWhite,
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body: SafeArea(
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child: CustomScrollView(
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slivers: [
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SliverFillRemaining(
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hasScrollBody: false,
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child: FadeTransition(
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opacity: _fadeAnim,
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child: SlideTransition(
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position: _slideAnim,
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 28),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const SizedBox(height: 48),
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_buildHeader(),
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const SizedBox(height: 32),
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const ScheduleWarningBanner(),
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const SizedBox(height: 32),
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_buildForm(context),
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const SizedBox(height: 24),
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const PrivacyNoticeCard(),
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const SizedBox(height: 32),
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_buildDemoHint(),
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const SizedBox(height: 24),
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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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),
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),
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);
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}
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Widget _buildHeader() {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Logo / ícono principal
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Container(
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width: 60,
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height: 60,
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decoration: BoxDecoration(
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gradient: const LinearGradient(
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colors: [AppTheme.leafGreen, AppTheme.forestGreen],
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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),
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borderRadius: BorderRadius.circular(16),
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boxShadow: [
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BoxShadow(
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color: AppTheme.leafGreen.withOpacity(0.35),
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blurRadius: 12,
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offset: const Offset(0, 4),
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),
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],
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),
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child: const Icon(
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Icons.recycling_rounded,
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color: Colors.white,
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size: 34,
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),
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),
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const SizedBox(height: 20),
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RichText(
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text: const TextSpan(
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style: TextStyle(
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fontSize: 28,
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fontWeight: FontWeight.w800,
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color: AppTheme.charcoal,
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height: 1.15,
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),
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children: [
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TextSpan(text: 'Waste'),
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TextSpan(
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text: 'Notify',
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style: TextStyle(color: AppTheme.leafGreen),
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),
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],
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),
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),
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const SizedBox(height: 8),
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Text(
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'Notificaciones de recolección\nsin rastreo, sin riesgos.',
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style: TextStyle(
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fontSize: 14.5,
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color: AppTheme.midGray,
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height: 1.5,
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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 _buildForm(BuildContext context) {
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return Form(
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key: _formKey,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// --- Campo: Email o Teléfono ---
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TextFormField(
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controller: _identifierController,
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keyboardType: TextInputType.emailAddress,
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textInputAction: TextInputAction.next,
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autocorrect: false,
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decoration: const InputDecoration(
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labelText: 'Correo electrónico o teléfono',
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hintText: 'ej. juan@correo.com o 5551234567',
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prefixIcon: Icon(Icons.person_outline_rounded),
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),
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validator: (value) {
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if (value == null || value.trim().isEmpty) {
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return 'Ingresa tu correo o número de teléfono';
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}
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final trimmed = value.trim();
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final isEmail = RegExp(
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r'^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$',
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).hasMatch(trimmed);
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final isPhone = RegExp(r'^\d{7,15}$').hasMatch(trimmed);
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if (!isEmail && !isPhone) {
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return 'Ingresa un correo válido o un número de 7-15 dígitos';
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}
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return null;
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},
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),
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const SizedBox(height: 16),
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// --- Campo: Contraseña ---
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TextFormField(
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controller: _passwordController,
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obscureText: _obscurePassword,
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textInputAction: TextInputAction.done,
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onFieldSubmitted: (_) => _submit(context),
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decoration: InputDecoration(
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labelText: 'Contraseña',
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hintText: 'Mínimo 6 caracteres',
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prefixIcon: const Icon(Icons.lock_outline_rounded),
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suffixIcon: IconButton(
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icon: Icon(
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_obscurePassword
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? Icons.visibility_off_outlined
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: Icons.visibility_outlined,
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color: AppTheme.midGray,
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),
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onPressed: () =>
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setState(() => _obscurePassword = !_obscurePassword),
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tooltip: _obscurePassword
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? 'Mostrar contraseña'
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: 'Ocultar contraseña',
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),
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Ingresa tu contraseña';
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}
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if (value.length < 6) {
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return 'La contraseña debe tener al menos 6 caracteres';
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}
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return null;
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},
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),
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const SizedBox(height: 8),
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// --- Olvidé mi contraseña ---
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Align(
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alignment: Alignment.centerRight,
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child: TextButton(
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onPressed: () {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Recuperación de contraseña — Próximamente'),
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),
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);
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},
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child: const Text(
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'¿Olvidaste tu contraseña?',
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style: TextStyle(fontSize: 13),
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),
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),
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),
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const SizedBox(height: 16),
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// --- Botón Principal ---
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BlocBuilder<AuthBloc, AuthState>(
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builder: (context, state) {
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final isLoading = state is AuthLoading;
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return AnimatedContainer(
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duration: const Duration(milliseconds: 200),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(12),
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boxShadow: isLoading
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? []
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: [
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BoxShadow(
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color: AppTheme.leafGreen.withOpacity(0.4),
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blurRadius: 16,
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offset: const Offset(0, 6),
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),
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],
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),
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child: ElevatedButton(
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onPressed: isLoading ? null : () => _submit(context),
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style: ElevatedButton.styleFrom(
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backgroundColor: isLoading
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? AppTheme.mintGreen.withOpacity(0.7)
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: AppTheme.leafGreen,
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disabledBackgroundColor:
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AppTheme.mintGreen.withOpacity(0.6),
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),
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child: isLoading
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? const SizedBox(
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height: 22,
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width: 22,
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child: CircularProgressIndicator(
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strokeWidth: 2.5,
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valueColor: AlwaysStoppedAnimation(Colors.white),
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),
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)
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: const Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(Icons.login_rounded, size: 20),
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SizedBox(width: 10),
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Text('Ingresar de forma segura'),
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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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);
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}
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Widget _buildDemoHint() {
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return Container(
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padding: const EdgeInsets.all(14),
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decoration: BoxDecoration(
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color: AppTheme.sandBeige,
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borderRadius: BorderRadius.circular(10),
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border: Border.all(color: const Color(0xFFFFE082), width: 1),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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const Icon(Icons.science_outlined,
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size: 15, color: AppTheme.earthBrown),
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const SizedBox(width: 6),
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Text(
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'Demo MVP — Credenciales de prueba',
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style: TextStyle(
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fontSize: 12,
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fontWeight: FontWeight.w700,
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color: AppTheme.earthBrown,
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),
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),
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],
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),
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const SizedBox(height: 6),
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_DemoCredential(
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label: 'Ciudadano',
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user: 'ciudadano@ejemplo.com',
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pass: 'password123',
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),
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_DemoCredential(
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label: 'Operador',
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user: 'operador@ejemplo.com',
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pass: 'operador456',
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),
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_DemoCredential(
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label: 'Teléfono',
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user: '5551234567',
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pass: 'pass1234',
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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 _DemoCredential extends StatelessWidget {
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final String label;
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final String user;
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final String pass;
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const _DemoCredential({
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required this.label,
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required this.user,
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required this.pass,
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});
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: const EdgeInsets.only(top: 3),
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child: Text(
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'$label: $user / $pass',
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style: const TextStyle(
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fontSize: 11.5,
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color: AppTheme.earthBrown,
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fontFamily: 'monospace',
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),
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),
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);
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}
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}
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