Files
app/wei_ai_app/lib/screens/discovery/discovery_screen.dart
2026-01-28 20:28:38 +08:00

304 lines
12 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:lucide_icons/lucide_icons.dart';
import 'package:go_router/go_router.dart';
import '../../core/core.dart';
import '../../providers/providers.dart';
import '../../widgets/tab_content_layout.dart';
class DiscoveryScreen extends ConsumerWidget {
const DiscoveryScreen({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final categoriesAsync = ref.watch(categoriesProvider);
final filteredCharactersAsync = ref.watch(filteredCharactersProvider);
final selectedCategory = ref.watch(selectedCategoryProvider);
const double bottomNavHeight = 90;
return TabContentLayout(
child: Column(
children: [
// 1. Filter Bar
SizedBox(
height: 50,
child: categoriesAsync.when(
data: (categories) => ListView.separated(
padding: const EdgeInsets.symmetric(horizontal: 16),
scrollDirection: Axis.horizontal,
itemCount: categories.length,
separatorBuilder: (_, __) => const SizedBox(width: 12),
itemBuilder: (context, index) {
final category = categories[index];
final isActive = selectedCategory == category.code;
return Center(
child: GestureDetector(
onTap: () => ref.read(selectedCategoryProvider.notifier).setCategory(category.code),
child: AnimatedContainer(
duration: const Duration(milliseconds: 300),
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
decoration: BoxDecoration(
color: isActive ? Colors.white : Colors.white.withOpacity(0.05),
borderRadius: BorderRadius.circular(20),
border: Border.all(
color: isActive ? Colors.white : Colors.white.withOpacity(0.1),
),
),
child: Text(
category.label,
style: TextStyle(
fontSize: 14,
fontWeight: isActive ? FontWeight.bold : FontWeight.normal,
color: isActive ? const Color(0xFF2E1065) : Colors.white.withOpacity(0.7),
),
),
),
),
);
},
),
loading: () => const Center(child: CircularProgressIndicator(strokeWidth: 2)),
error: (e, _) => Center(child: Text('加载分类失败', style: TextStyle(color: Colors.white.withOpacity(0.5)))),
),
),
// 2. Grid Layout
Expanded(
child: filteredCharactersAsync.when(
data: (characters) => characters.isEmpty
? Center(child: Text('暂无匹配角色', style: TextStyle(color: Colors.white.withOpacity(0.5))))
: GridView.builder(
padding: EdgeInsets.fromLTRB(16, 16, 16, bottomNavHeight + 20),
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
childAspectRatio: 3 / 4,
crossAxisSpacing: 16,
mainAxisSpacing: 16,
),
itemCount: characters.length,
itemBuilder: (context, index) {
final char = characters[index];
return _CharacterCard(
character: char,
onTap: () {
if (!char.isLocked) {
context.push('/interaction/${char.id}');
}
},
)
.animate()
.fadeIn(duration: 400.ms, delay: (index * 100).ms)
.scale(begin: const Offset(0.9, 0.9));
},
),
loading: () => const Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
CircularProgressIndicator(strokeWidth: 2),
SizedBox(height: 16),
Text('正在加载角色...', style: TextStyle(color: Colors.white54)),
],
),
),
error: (e, _) => Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(LucideIcons.alertCircle, color: Colors.red.withOpacity(0.7), size: 48),
const SizedBox(height: 16),
Text('加载失败', style: TextStyle(color: Colors.white.withOpacity(0.7))),
const SizedBox(height: 8),
Text(e.toString(), style: TextStyle(color: Colors.white.withOpacity(0.4), fontSize: 12)),
const SizedBox(height: 16),
ElevatedButton(
onPressed: () => ref.invalidate(charactersProvider),
child: const Text('重试'),
),
],
),
),
),
),
],
),
);
}
}
class _CharacterCard extends StatelessWidget {
final CharacterModel character;
final VoidCallback onTap;
const _CharacterCard({
required this.character,
required this.onTap,
});
@override
Widget build(BuildContext context) {
// 获取头像 URL
final avatarUrl = CharacterRepository.getAvatarUrl(character.avatarPath);
return GestureDetector(
onTap: onTap,
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(24),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.3),
blurRadius: 15,
offset: const Offset(0, 6),
),
BoxShadow(
color: const Color(0xFFA855F7).withOpacity(0.1),
blurRadius: 20,
offset: const Offset(0, 0),
),
],
),
child: Stack(
fit: StackFit.expand,
children: [
// Clipped content area
ClipRRect(
borderRadius: BorderRadius.circular(24),
child: Stack(
fit: StackFit.expand,
children: [
// Background Image
Image.network(
avatarUrl,
fit: BoxFit.cover,
loadingBuilder: (context, child, loadingProgress) {
if (loadingProgress == null) return child;
return Container(
color: Colors.black26,
child: const Center(child: CircularProgressIndicator(strokeWidth: 2)),
);
},
errorBuilder: (context, error, stackTrace) {
return Container(
color: const Color(0xFF2E1065),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(LucideIcons.user, size: 48, color: Colors.white.withOpacity(0.3)),
const SizedBox(height: 8),
Text(
character.name,
style: TextStyle(color: Colors.white.withOpacity(0.5), fontSize: 12),
),
],
),
);
},
),
// Gradient Overlay
Container(
decoration: const BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [
Colors.transparent,
Colors.transparent,
Color(0xFF2E1065),
],
stops: [0.0, 0.5, 1.0],
),
),
),
// Top Right: Lock Icon
if (character.isLocked)
Positioned(
top: 12,
right: 12,
child: Container(
width: 32,
height: 32,
decoration: BoxDecoration(
color: Colors.black.withOpacity(0.4),
shape: BoxShape.circle,
border: Border.all(color: Colors.white.withOpacity(0.2)),
),
child: const Icon(LucideIcons.lock, size: 14, color: Colors.white70),
),
),
// Bottom Content
Positioned(
bottom: 0,
left: 0,
right: 0,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
Text(
character.name,
style: const TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
color: Colors.white,
shadows: [Shadow(color: Colors.black45, blurRadius: 2, offset: Offset(0, 1))],
),
),
const SizedBox(height: 4),
Wrap(
spacing: 4,
runSpacing: 4,
children: character.tags.take(2).map((tag) {
return Container(
padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
decoration: BoxDecoration(
color: Colors.white.withOpacity(0.12),
borderRadius: BorderRadius.circular(10),
border: Border.all(
color: Colors.white.withOpacity(0.25),
width: 0.8,
),
),
child: Text(
tag.name,
style: const TextStyle(fontSize: 10, color: Colors.white),
),
);
}).toList(),
),
],
),
),
),
],
),
),
// Border Overlay
Positioned.fill(
child: IgnorePointer(
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(24),
border: Border.all(
color: Colors.white.withOpacity(0.15),
width: 1.2,
),
),
),
),
),
],
),
),
);
}
}