Files
AI-Health/health_app/lib/pages/home/home_page.dart
MingNian 7a93237069 feat: AI 对话附件上下文解析 + 历史会话归档 + 多页面 UI 重构
- 后端: 新增 AttachmentContextBuilder 解析图片/PDF 摘要并拼入 LLM 上下文; ai_chat_endpoints 扩展附件接口; 新增 ReportAnalysisService
- 前端: 新增历史会话页与 conversation_history_provider; chat 链路支持附件展示与回放
- UI: 重构 medication_checkin / notification_center / profile / health_drawer 等多页面
- 配置: api_client baseUrl 适配当前 WiFi IP
2026-07-06 12:44:59 +08:00

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Dart
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import 'dart:io';
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:image_picker/image_picker.dart';
import 'package:file_picker/file_picker.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import '../../core/app_colors.dart';
import '../../core/app_theme.dart';
import '../../core/navigation_provider.dart';
import '../../providers/auth_provider.dart';
import '../../providers/chat_provider.dart';
import '../../providers/data_providers.dart';
import '../../widgets/health_drawer.dart';
import '../diet/diet_capture_page.dart';
import 'widgets/chat_messages_view.dart';
class HomePage extends ConsumerStatefulWidget {
const HomePage({super.key});
@override
ConsumerState<HomePage> createState() => _HomePageState();
}
class _HomePageState extends ConsumerState<HomePage>
with WidgetsBindingObserver {
final _textCtrl = TextEditingController();
final _scrollCtrl = ScrollController();
final _focusNode = FocusNode();
String? _pickedImagePath;
int _lastMsgCount = 0;
Timer? _notificationTimer;
@override
void initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
WidgetsBinding.instance.addPostFrameCallback(
(_) => ref.invalidate(notificationUnreadCountProvider),
);
_notificationTimer = Timer.periodic(
const Duration(seconds: 30),
(_) => ref.invalidate(notificationUnreadCountProvider),
);
}
@override
void didChangeMetrics() {
// 键盘动画期间每帧都会回调,让列表底部始终贴住输入区上沿
if (!_focusNode.hasFocus) return;
WidgetsBinding.instance.addPostFrameCallback((_) {
if (!mounted || !_scrollCtrl.hasClients) return;
_scrollCtrl.jumpTo(_scrollCtrl.position.maxScrollExtent);
});
}
@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
_notificationTimer?.cancel();
_textCtrl.dispose();
_scrollCtrl.dispose();
_focusNode.dispose();
super.dispose();
}
void _sendMessage() {
final text = _textCtrl.text.trim();
final imagePath = _pickedImagePath;
if (text.isEmpty && imagePath == null) return;
_textCtrl.clear();
_focusNode.unfocus();
setState(() => _pickedImagePath = null);
if (imagePath != null) {
ref.read(chatProvider.notifier).sendImage(imagePath, text);
} else {
ref.read(chatProvider.notifier).sendMessage(text);
}
}
@override
Widget build(BuildContext context) {
final chatState = ref.watch(chatProvider);
final auth = ref.watch(authProvider);
final user = auth.user;
ref.listen(cameraActionProvider, (prev, next) {
if (next == 'camera') {
_pickImage(ImageSource.camera);
ref.read(cameraActionProvider.notifier).clear();
} else if (next == 'gallery') {
_pickImage(ImageSource.gallery);
ref.read(cameraActionProvider.notifier).clear();
}
});
ref.listen(dietActionProvider, (prev, next) {
if (next == 'pickFoodCamera') {
_pickFoodImage(ImageSource.camera);
ref.read(dietActionProvider.notifier).clear();
} else if (next == 'pickFoodGallery') {
_pickFoodImage(ImageSource.gallery);
ref.read(dietActionProvider.notifier).clear();
}
});
final currentCount = chatState.messages.length;
if (currentCount > _lastMsgCount) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (_scrollCtrl.hasClients) {
_scrollCtrl.jumpTo(_scrollCtrl.position.maxScrollExtent);
}
});
}
_lastMsgCount = currentCount;
return Scaffold(
backgroundColor: const Color(0xFFFFFCFF),
drawer: const HealthDrawer(),
drawerEdgeDragWidth: MediaQuery.sizeOf(context).width * 0.65,
body: AppBackground(
safeArea: true,
child: Column(
children: [
_buildHeader(user),
Expanded(
child: RepaintBoundary(
child: ChatMessagesView(
scrollCtrl: _scrollCtrl,
messages: chatState.messages,
),
),
),
_buildBottomBar(context),
],
),
),
);
}
Widget _buildHeader(dynamic user) {
final name = (user?.name != null && user!.name!.isNotEmpty)
? user.name
: '用户';
final unreadCount = ref.watch(notificationUnreadCountProvider).value ?? 0;
return Container(
padding: const EdgeInsets.fromLTRB(14, 10, 14, 10),
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.34),
border: Border(
bottom: BorderSide(color: Colors.white.withValues(alpha: 0.62)),
),
boxShadow: [
BoxShadow(
color: const Color(0xFF101828).withValues(alpha: 0.025),
blurRadius: 16,
offset: const Offset(0, 6),
),
],
),
child: Row(
children: [
Builder(
builder: (ctx) {
return _HeaderIconButton(
icon: LucideIcons.menu,
onTap: () => Scaffold.of(ctx).openDrawer(),
);
},
),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'小脉健康',
style: TextStyle(
fontSize: 12,
fontWeight: FontWeight.w600,
color: AppColors.textHint,
),
),
const SizedBox(height: 2),
Text(
'${_getGreeting()}$name',
style: const TextStyle(
fontSize: 18,
fontWeight: FontWeight.w800,
color: AppColors.textPrimary,
),
),
],
),
),
_HeaderIconButton(
icon: LucideIcons.bell,
badgeCount: unreadCount,
onTap: () => pushRoute(ref, 'notifications'),
),
],
),
);
}
String _getGreeting() {
final hour = DateTime.now().hour;
if (hour < 9) return '早上好';
if (hour < 12) return '上午好';
if (hour < 18) return '下午好';
return '晚上好';
}
static final _agentDefs = [
(ActiveAgent.consultation, 'AI问诊', LucideIcons.messageCircle),
(ActiveAgent.health, '记数据', LucideIcons.heartPulse),
(ActiveAgent.diet, '拍饮食', LucideIcons.utensils),
(ActiveAgent.medication, '药管家', LucideIcons.pill),
(ActiveAgent.report, '报告分析', LucideIcons.fileText),
(ActiveAgent.exercise, '运动', LucideIcons.activity),
];
Widget _buildAgentBar() {
return SizedBox(
height: 42,
child: ListView.separated(
scrollDirection: Axis.horizontal,
padding: const EdgeInsets.symmetric(horizontal: 14),
itemCount: _agentDefs.length,
separatorBuilder: (_, _) => const SizedBox(width: 8),
itemBuilder: (_, i) {
final (agent, label, icon) = _agentDefs[i];
final gradient = _agentGradient(agent);
return GestureDetector(
onTap: () =>
ref.read(chatProvider.notifier).triggerAgent(agent, label),
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 13, vertical: 9),
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.86),
borderRadius: BorderRadius.circular(999),
border: Border.all(color: Colors.white, width: 1.2),
boxShadow: [
BoxShadow(
color: const Color(0xFF6366F1).withValues(alpha: 0.10),
blurRadius: 14,
offset: const Offset(0, 7),
),
],
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Container(
width: 16,
height: 16,
decoration: BoxDecoration(
gradient: gradient,
borderRadius: BorderRadius.circular(6),
),
child: Icon(icon, size: 11, color: Colors.white),
),
const SizedBox(width: 6),
Text(
label,
style: const TextStyle(
fontSize: 14,
fontWeight: FontWeight.w700,
color: AppColors.textPrimary,
),
),
],
),
),
);
},
),
);
}
LinearGradient _agentGradient(ActiveAgent agent) {
return switch (agent) {
ActiveAgent.consultation => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFFFFCAD4), Color(0xFFFF9AAE)],
),
ActiveAgent.health => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFFA1FFCE), Color(0xFF69DB8F)],
),
ActiveAgent.diet => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFFF6D365), Color(0xFFFDA085)],
),
ActiveAgent.medication => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFF89F7FE), Color(0xFF66A6FF)],
),
ActiveAgent.report => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFFE0C3FC), Color(0xFF8EC5FC)],
),
ActiveAgent.exercise => const LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xFFB6F2FF), Color(0xFF7DD3FC)],
),
_ => AppColors.primaryGradient,
};
}
Widget _buildBottomBar(BuildContext context) {
return Container(
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.28),
border: Border(
top: BorderSide(color: Colors.white.withValues(alpha: 0.62)),
),
boxShadow: [
BoxShadow(
color: const Color(0xFF101828).withValues(alpha: 0.045),
blurRadius: 20,
offset: const Offset(0, -8),
),
],
),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const SizedBox(height: 6),
_buildAgentBar(),
const SizedBox(height: 6),
if (_pickedImagePath != null) _buildImagePreview(),
_buildInputBar(),
],
),
);
}
Widget _buildImagePreview() {
return Container(
margin: const EdgeInsets.fromLTRB(14, 8, 14, 0),
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.9),
borderRadius: BorderRadius.circular(14),
border: Border.all(color: AppColors.borderLight),
),
child: Row(
children: [
ClipRRect(
borderRadius: BorderRadius.circular(10),
child: Image.file(
File(_pickedImagePath!),
width: 48,
height: 48,
fit: BoxFit.cover,
),
),
const SizedBox(width: 10),
const Expanded(
child: Text(
'点击发送图片',
style: TextStyle(fontSize: 14, color: AppColors.textSecondary),
),
),
GestureDetector(
onTap: () => setState(() => _pickedImagePath = null),
child: const Icon(Icons.close, size: 20, color: AppColors.textHint),
),
],
),
);
}
Widget _buildInputBar() {
return Padding(
padding: const EdgeInsets.fromLTRB(12, 0, 12, 10),
child: Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
_RoundToolButton(
icon: LucideIcons.plus,
onTap: () => _showAttachmentPicker(context),
),
const SizedBox(width: 8),
Expanded(
child: ConstrainedBox(
constraints: const BoxConstraints(maxHeight: 118),
child: TextField(
controller: _textCtrl,
focusNode: _focusNode,
style: const TextStyle(
fontSize: 15,
color: AppColors.textPrimary,
),
maxLines: null,
textInputAction: TextInputAction.newline,
decoration: InputDecoration(
hintText: '输入你想说的...',
filled: true,
fillColor: Colors.white,
contentPadding: const EdgeInsets.symmetric(
horizontal: 16,
vertical: 11,
),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(22),
borderSide: const BorderSide(color: AppColors.borderLight),
),
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(22),
borderSide: const BorderSide(color: AppColors.borderLight),
),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(22),
borderSide: const BorderSide(
color: AppColors.auraIndigo,
width: 1.2,
),
),
),
onSubmitted: (_) => _sendMessage(),
),
),
),
const SizedBox(width: 8),
GestureDetector(
onTap: _sendMessage,
child: Container(
width: 42,
height: 42,
margin: EdgeInsets.only(bottom: _pickedImagePath != null ? 0 : 2),
decoration: BoxDecoration(
gradient: AppColors.primaryGradient,
borderRadius: BorderRadius.circular(21),
boxShadow: AppColors.buttonShadow,
),
child: const Icon(
LucideIcons.send,
size: 19,
color: Colors.white,
),
),
),
],
),
);
}
void _showAttachmentPicker(BuildContext context) {
showModalBottomSheet(
context: context,
backgroundColor: Colors.white,
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
),
builder: (ctx) => SafeArea(
child: Padding(
padding: const EdgeInsets.symmetric(vertical: 10),
child: Wrap(
children: [
ListTile(
leading: const Icon(
Icons.camera_alt_outlined,
color: AppColors.primary,
),
title: const Text('拍照'),
onTap: () {
Navigator.pop(ctx);
_pickImage(ImageSource.camera);
},
),
ListTile(
leading: const Icon(
Icons.photo_library_outlined,
color: AppColors.primary,
),
title: const Text('从相册选择'),
onTap: () {
Navigator.pop(ctx);
_pickImage(ImageSource.gallery);
},
),
ListTile(
leading: const Icon(
Icons.picture_as_pdf_outlined,
color: AppColors.primary,
),
title: const Text('上传 PDF'),
onTap: () async {
Navigator.pop(ctx);
final result = await FilePicker.platform.pickFiles(
type: FileType.custom,
allowedExtensions: ['pdf'],
withData: false,
);
if (result == null || result.files.isEmpty) return;
final pdfFile = result.files.first;
final path = pdfFile.path;
if (path == null || path.isEmpty) return;
// 上传 + 让 AI 看 PDF 内容
await ref.read(chatProvider.notifier).sendPdf(
path,
pdfFile.name,
_textCtrl.text.trim(),
);
_textCtrl.clear();
if (mounted) setState(() {});
},
),
],
),
),
),
);
}
Future<void> _pickImage(ImageSource source) async {
final picked = await ImagePicker().pickImage(
source: source,
imageQuality: 85,
);
if (picked != null) {
final token = await ref.read(apiClientProvider).accessToken;
if (token == null) return;
setState(() => _pickedImagePath = picked.path);
}
}
Future<void> _pickFoodImage(ImageSource source) async {
final picked = await ImagePicker().pickImage(
source: source,
imageQuality: 80,
maxWidth: 1024,
maxHeight: 1024,
);
if (picked != null && mounted) {
ref.read(dietProvider.notifier).reset();
ref.read(dietProvider.notifier).setImage(picked.path);
ref.read(dietProvider.notifier).analyzeImage();
pushRoute(ref, 'dietCapture');
}
}
}
class _HeaderIconButton extends StatelessWidget {
final IconData icon;
final VoidCallback onTap;
final int badgeCount;
const _HeaderIconButton({
required this.icon,
required this.onTap,
this.badgeCount = 0,
});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Stack(
clipBehavior: Clip.none,
children: [
Container(
width: 38,
height: 38,
decoration: BoxDecoration(
gradient: AppColors.surfaceGradient,
borderRadius: BorderRadius.circular(14),
border: Border.all(color: AppColors.borderLight),
boxShadow: AppColors.cardShadowLight,
),
child: Icon(icon, size: 20, color: AppColors.textPrimary),
),
if (badgeCount > 0)
Positioned(
right: -5,
top: -5,
child: Container(
constraints: const BoxConstraints(minWidth: 18, minHeight: 18),
padding: const EdgeInsets.symmetric(horizontal: 4),
decoration: BoxDecoration(
color: AppColors.error,
borderRadius: BorderRadius.circular(10),
border: Border.all(color: Colors.white, width: 2),
),
alignment: Alignment.center,
child: Text(
badgeCount > 99 ? '99+' : '$badgeCount',
style: const TextStyle(
color: Colors.white,
fontSize: 10,
fontWeight: FontWeight.w800,
),
),
),
),
],
),
);
}
}
class _RoundToolButton extends StatelessWidget {
final IconData icon;
final VoidCallback onTap;
const _RoundToolButton({required this.icon, required this.onTap});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Container(
width: 42,
height: 42,
margin: const EdgeInsets.only(bottom: 2),
decoration: BoxDecoration(
gradient: AppColors.surfaceGradient,
borderRadius: BorderRadius.circular(21),
border: Border.all(color: AppColors.borderLight),
boxShadow: AppColors.cardShadowLight,
),
child: Icon(icon, size: 21, color: AppColors.primaryDark),
),
);
}
}