favorite
This commit is contained in:
Phuoc Nguyen
464
lib/features/favorites/presentation/pages/favorites_page.dart
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464
lib/features/favorites/presentation/pages/favorites_page.dart
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/// Page: Favorites Page
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///
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/// Displays all favorited products in a grid layout.
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/// Allows users to view and manage their favorite products.
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library;
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import 'package:shimmer/shimmer.dart';
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import 'package:worker/core/constants/ui_constants.dart';
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import 'package:worker/core/theme/colors.dart';
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import 'package:worker/features/favorites/presentation/providers/favorites_provider.dart';
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import 'package:worker/features/favorites/presentation/widgets/favorite_product_card.dart';
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import 'package:worker/features/products/domain/entities/product.dart';
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/// Favorites Page
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///
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/// Shows all products that the user has marked as favorites.
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/// Features:
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/// - Grid layout of favorite products
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/// - Pull-to-refresh
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/// - Empty state when no favorites
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/// - Error state with retry
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/// - Clear all functionality
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class FavoritesPage extends ConsumerWidget {
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const FavoritesPage({super.key});
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/// Show confirmation dialog before clearing all favorites
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Future<void> _showClearAllDialog(BuildContext context, WidgetRef ref, int count) async {
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Xóa tất cả yêu thích?'),
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content: Text(
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'Bạn có chắc muốn xóa toàn bộ $count sản phẩm khỏi danh sách yêu thích?',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(false),
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child: const Text('Hủy'),
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),
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ElevatedButton(
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onPressed: () => Navigator.of(context).pop(true),
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style: ElevatedButton.styleFrom(
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backgroundColor: AppColors.danger,
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foregroundColor: AppColors.white,
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),
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child: const Text('Xóa tất cả'),
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),
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],
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),
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);
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if (confirmed == true && context.mounted) {
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// Clear all favorites
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await ref.read(favoritesProvider.notifier).clearAll();
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// Show snackbar
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if (context.mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Đã xóa tất cả yêu thích'),
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duration: Duration(seconds: 2),
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),
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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, WidgetRef ref) {
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// Watch favorites and products
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final favoriteProductsAsync = ref.watch(favoriteProductsProvider);
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final favoriteCount = ref.watch(favoriteCountProvider);
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return Scaffold(
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backgroundColor: const Color(0xFFF4F6F8),
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appBar: AppBar(
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// backgroundColor: AppColors.white,
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foregroundColor: Colors.black,
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elevation: 1,
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leading: IconButton(
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icon: const Icon(Icons.arrow_back),
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onPressed: () => context.pop(),
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),
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title: const Text('Yêu thích'),
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actions: [
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// Count badge
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if (favoriteCount > 0)
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Center(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 8.0),
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child: Text(
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'($favoriteCount)',
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style: const TextStyle(
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fontSize: 16.0,
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fontWeight: FontWeight.w600,
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color: AppColors.primaryBlue,
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),
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),
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),
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),
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// Clear all button
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if (favoriteCount > 0)
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IconButton(
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icon: const Icon(Icons.delete_outline),
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tooltip: 'Xóa tất cả',
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onPressed: () => _showClearAllDialog(context, ref, favoriteCount),
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),
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],
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),
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body: SafeArea(
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child: favoriteProductsAsync.when(
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data: (products) {
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if (products.isEmpty) {
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return const _EmptyState();
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}
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return RefreshIndicator(
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onRefresh: () async {
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ref.invalidate(favoritesProvider);
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ref.invalidate(favoriteProductsProvider);
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},
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child: _FavoritesGrid(products: products),
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);
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},
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loading: () => const _LoadingState(),
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error: (error, stackTrace) => _ErrorState(
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error: error,
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onRetry: () {
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ref.invalidate(favoritesProvider);
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ref.invalidate(favoriteProductsProvider);
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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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// EMPTY STATE
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// ============================================================================
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/// Empty State Widget
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///
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/// Displayed when there are no favorite products.
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class _EmptyState extends StatelessWidget {
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const _EmptyState();
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@override
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Widget build(BuildContext context) {
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(AppSpacing.xl),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// Large icon
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Icon(
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Icons.favorite_border,
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size: 80.0,
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color: AppColors.grey500.withValues(alpha: 0.5),
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),
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const SizedBox(height: AppSpacing.lg),
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// Heading
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const Text(
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'Chưa có sản phẩm yêu thích',
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style: TextStyle(
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fontSize: 18.0,
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fontWeight: FontWeight.w600,
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color: AppColors.grey900,
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: AppSpacing.sm),
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// Subtext
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Text(
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'Thêm sản phẩm vào danh sách yêu thích để xem lại sau',
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style: TextStyle(
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fontSize: 14.0,
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color: AppColors.grey500,
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: AppSpacing.xl),
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// Explore Products Button
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ElevatedButton(
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onPressed: () {
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// Navigate to products page
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context.pushReplacement('/products');
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},
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style: ElevatedButton.styleFrom(
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backgroundColor: AppColors.primaryBlue,
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foregroundColor: AppColors.white,
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padding: const EdgeInsets.symmetric(
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horizontal: AppSpacing.xl,
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vertical: AppSpacing.md,
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),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(AppRadius.button),
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),
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),
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child: const Text(
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'Khám phá sản phẩm',
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style: TextStyle(
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fontSize: 16.0,
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fontWeight: FontWeight.w600,
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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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// LOADING STATE
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// ============================================================================
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/// Loading State Widget
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///
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/// Displayed while favorites are being loaded.
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class _LoadingState extends StatelessWidget {
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const _LoadingState();
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@override
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Widget build(BuildContext context) {
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return GridView.builder(
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padding: const EdgeInsets.all(AppSpacing.md),
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gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 2,
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crossAxisSpacing: 12.0,
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mainAxisSpacing: 12.0,
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childAspectRatio: 0.62,
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),
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itemCount: 6, // Show 6 shimmer cards
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itemBuilder: (context, index) => _ShimmerCard(),
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);
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}
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}
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/// Shimmer Card for Loading State
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class _ShimmerCard extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return Card(
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elevation: ProductCardSpecs.elevation,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(ProductCardSpecs.borderRadius),
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),
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child: Shimmer.fromColors(
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baseColor: AppColors.grey100,
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highlightColor: AppColors.grey50,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Image placeholder
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Expanded(
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child: Container(
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decoration: BoxDecoration(
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color: AppColors.grey100,
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borderRadius: const BorderRadius.vertical(
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top: Radius.circular(ProductCardSpecs.borderRadius),
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),
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),
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),
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),
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// Info placeholder
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Padding(
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padding: const EdgeInsets.all(AppSpacing.sm),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Name placeholder
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Container(
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height: 14.0,
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width: double.infinity,
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decoration: BoxDecoration(
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color: AppColors.grey100,
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borderRadius: BorderRadius.circular(4.0),
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),
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),
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const SizedBox(height: 8.0),
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// SKU placeholder
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Container(
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height: 12.0,
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width: 80.0,
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decoration: BoxDecoration(
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color: AppColors.grey100,
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borderRadius: BorderRadius.circular(4.0),
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),
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),
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const SizedBox(height: 8.0),
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// Price placeholder
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Container(
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height: 16.0,
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width: 100.0,
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decoration: BoxDecoration(
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color: AppColors.grey100,
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borderRadius: BorderRadius.circular(4.0),
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),
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),
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const SizedBox(height: 12.0),
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// Button placeholder
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Container(
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height: 36.0,
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width: double.infinity,
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decoration: BoxDecoration(
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color: AppColors.grey100,
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borderRadius: BorderRadius.circular(AppRadius.button),
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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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// ERROR STATE
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// ============================================================================
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/// Error State Widget
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///
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/// Displayed when there's an error loading favorites.
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class _ErrorState extends StatelessWidget {
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final Object error;
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final VoidCallback onRetry;
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const _ErrorState({
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required this.error,
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required this.onRetry,
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});
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@override
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Widget build(BuildContext context) {
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(AppSpacing.xl),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// Error icon
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Icon(
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Icons.error_outline,
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size: 80.0,
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color: AppColors.danger.withValues(alpha: 0.7),
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),
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const SizedBox(height: AppSpacing.lg),
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// Title
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const Text(
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'Có lỗi xảy ra',
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style: TextStyle(
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fontSize: 18.0,
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fontWeight: FontWeight.w600,
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color: AppColors.grey900,
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: AppSpacing.sm),
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// Error message
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Text(
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error.toString(),
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style: const TextStyle(
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fontSize: 14.0,
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color: AppColors.grey500,
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),
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textAlign: TextAlign.center,
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maxLines: 3,
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overflow: TextOverflow.ellipsis,
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),
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const SizedBox(height: AppSpacing.xl),
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// Retry Button
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ElevatedButton.icon(
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onPressed: onRetry,
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style: ElevatedButton.styleFrom(
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backgroundColor: AppColors.primaryBlue,
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foregroundColor: AppColors.white,
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padding: const EdgeInsets.symmetric(
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horizontal: AppSpacing.xl,
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vertical: AppSpacing.md,
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),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(AppRadius.button),
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),
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),
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icon: const Icon(Icons.refresh),
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label: const Text(
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'Thử lại',
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style: TextStyle(
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fontSize: 16.0,
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fontWeight: FontWeight.w600,
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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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// FAVORITES GRID
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// ============================================================================
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/// Favorites Grid Widget
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///
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/// Displays favorite products in a grid layout.
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class _FavoritesGrid extends StatelessWidget {
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final List<Product> products;
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const _FavoritesGrid({
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required this.products,
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});
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@override
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Widget build(BuildContext context) {
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return GridView.builder(
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padding: const EdgeInsets.all(AppSpacing.md),
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gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: GridSpecs.productGridColumns,
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crossAxisSpacing: 12.0,
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mainAxisSpacing: 12.0,
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childAspectRatio: 0.62, // Same as products page
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),
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itemCount: products.length,
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itemBuilder: (context, index) {
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final product = products[index];
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return RepaintBoundary(
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child: FavoriteProductCard(product: product),
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);
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},
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);
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}
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}
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Reference in New Issue
Block a user