基于Flutter3.32+DeepSeek电脑端AI流式对话程序

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:shirne_dialog/shirne_dialog.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:system_tray/system_tray.dart';
import 'package:window_manager/window_manager.dart';

import 'controller/app.dart';
import 'controller/chat.dart';

// 引入路由配置
import 'router/index.dart';

void main() async {
  // 初始化存储服务
  await GetStorage.init();

  // 将.env文件内容加载到dotenv中
  await dotenv.load(fileName: '.env');

  // 注册GetxController
  Get.put(AppStore());
  Get.put(ChatStore());

  // 初始化window_manager窗口
  WidgetsFlutterBinding.ensureInitialized();
  await windowManager.ensureInitialized();
  WindowOptions windowOptions = WindowOptions(
    size: Size(850, 620),
    center: true,
    backgroundColor: Colors.transparent,
    skipTaskbar: false,
    titleBarStyle: TitleBarStyle.hidden
  );
  windowManager.waitUntilReadyToShow(windowOptions, () async {
    windowManager.setAsFrameless();
    windowManager.setHasShadow(true);
    await windowManager.show();
    await windowManager.focus();
  });

  // 初始化托盘
  initSystemTray();

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    // 获取AppStore实例
    final appStore = AppStore.to;

    return GetMaterialApp(
      title: 'FLUTTER3 WINSEEK',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Color(0xFF4F6BFE)),
        useMaterial3: true,
        fontFamily: Platform.isWindows ? 'Microsoft YaHei' : null,
      ),
      // 初始路由
      initialRoute: appStore.isLogin ? '/' : '/login',
      // 路由页面
      getPages: routePages,
      // 初始弹窗key
      navigatorKey: MyDialog.navigatorKey,
      localizationsDelegates: [
        // Add your ShirneDialogLocalizations delegate here
        ShirneDialogLocalizations.delegate,
      ],
    );
  }
}

// 创建系统托盘图标
Future<void> initSystemTray() async {
  String trayIco = 'assets/images/tray.ico';
  SystemTray systemTray = SystemTray();

  // 初始化系统托盘
  await systemTray.initSystemTray(
    title: 'system-tray',
    iconPath: trayIco,
  );

  // 右键菜单
  final Menu menu = Menu();
  await menu.buildFrom([
    MenuItemLabel(label: '打开主界面', image: 'assets/images/tray.ico', onClicked: (menuItem) async => await windowManager.show()),
    MenuItemLabel(label: '隐藏窗口', image: 'assets/images/tray.ico', onClicked: (menuItem) async => await windowManager.hide()),
    MenuItemLabel(label: '设置中心', image: 'assets/images/tray.ico', onClicked: (menuItem) => Get.toNamed('/setting')),
    MenuItemLabel(label: '锁屏', image: 'assets/images/tray.ico', onClicked: (menuItem) => {}),
    MenuItemLabel(label: '关闭程序并退出', image: 'assets/images/tray.ico', onClicked: (menuItem) async => await windowManager.destroy()),
  ]);
  await systemTray.setContextMenu(menu);

  // 右键事件
  systemTray.registerSystemTrayEventHandler((eventName) async {
    debugPrint('eventName: $eventName');
    if (eventName == kSystemTrayEventClick) {
      Platform.isWindows ? await windowManager.show() : systemTray.popUpContextMenu();
    } else if (eventName == kSystemTrayEventRightClick) {
      Platform.isWindows ? systemTray.popUpContextMenu() : await windowManager.show();
    }
  });
}

# 项目名称
APP_NAME = 'Flutter3-WinSeek'

# DeepSeek API配置
DEEPSEEK_API_KEY = apikey
DEEPSEEK_BASE_URL = https://api.deepseek.com

// 获取.env环境变量baseUrl和apiKey
String baseURL = dotenv.get('DEEPSEEK_BASE_URL');
String apiKEY = dotenv.get('DEEPSEEK_API_KEY');

return Scaffold(
  backgroundColor: Colors.grey[50],
  body: DragToResizeArea(
    child: Row(
      children: [
        // 侧边栏
        AnimatedSize(
          duration: const Duration(milliseconds: 300),
          curve: Curves.easeInOut,
          child: Container(
            width: collapsed ? 0 : 260,
            decoration: BoxDecoration(
              border: Border(right: BorderSide(color: Colors.grey.withAlpha(50)))
            ),
            child: Material(
              color: Color(0xFFF3F3F3),
              child: Sidebar(),
            ),
          ),
        ),
        // 主体容器
        Expanded(
          child: Column(
            children: [
              // 自定义导航栏
              SizedBox(
                height: 30.0,
                child: Row(
                  children: [
                    IconButton(
                      onPressed: () {
                        setState(() {
                          collapsed = !collapsed;
                        });
                      },
                      icon: Icon(collapsed ? Icons.format_indent_increase : Icons.format_indent_decrease, size: 16.0,),
                      tooltip: collapsed ? '展开' : '收缩',
                    ),
                    Expanded(
                      child: DragToMoveArea(
                        child: SizedBox(
                          height: double.infinity,
                        ),
                      ),
                    ),
                    // 右上角操作按钮
                    WinBtns(
                      leading: Row(
                        children: [
                          ...
                        ],
                      ),
                    ),
                  ],
                ),
              ),
              // 右侧主面板
              Expanded(
                child: Container(
                  child: widget.child,
                ),
              ),
            ],
          ),
        ),
      ],
    ),
  ),
);

return Container(
  width: double.infinity,
  padding: EdgeInsets.symmetric(vertical: 10.0),
  child: Column(
    spacing: 6.0,
    children: [
      // 技能栏
      if (widget.skillbar)
      ScrollConfiguration(
        behavior: CustomScrollBehavior(),
        child: SingleChildScrollView(
          scrollDirection: Axis.horizontal,
          padding: EdgeInsets.symmetric(horizontal: 15.0),
          child: Row(
            spacing: 4.0,
            children: [
              ...
            ]
          ),
        ),
      ),
      // 编辑框
      Container(
        margin: EdgeInsets.symmetric(horizontal: 15.0),
        padding: EdgeInsets.all(10.0),
        decoration: BoxDecoration(
          color: Colors.white,
          border: Border.all(color: Colors.grey.withAlpha(100), width: .5),
          borderRadius: BorderRadius.circular(15.0),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withAlpha(20),
              offset: Offset(0.0, 3.0),
              blurRadius: 6.0,
              spreadRadius: 0.0,
            ),
          ]
        ),
        child: Column(
          spacing: 10.0,
          children: [
            // 输入框
            ConstrainedBox(
              constraints: BoxConstraints(minHeight: 48.0, maxHeight: 150.0),
              child: TextField(
                ...
              ),
            ),
            // 操作栏
            Row(
              spacing: 10.0,
              children: [
                SizedBox(
                  height: 30.0,
                  child: TextButton(
                    onPressed: () {
                      setState(() {
                        isDeep =! isDeep;
                      });
                    },
                    style: ButtonStyle(
                      backgroundColor: WidgetStateProperty.all(isDeep ? Color(0xFF4F6BFE).withAlpha(30) : Colors.grey[200]),
                      padding: WidgetStateProperty.all(EdgeInsets.symmetric(horizontal: 10.0)),
                    ),
                    child: Row(
                      spacing: 4.0,
                      children: [
                        Icon(Icons.stream, color: isDeep ? Color(0xFF4F6BFE) : Colors.black, size: 18.0,),
                        Text('深度思考(R1)', style: TextStyle(color: isDeep ? Color(0xFF4F6BFE) : Colors.black, fontSize: 13.0),),
                      ],
                    ),
                  ),
                ),
                SizedBox(
                  height: 30.0,
                  child: TextButton(
                    onPressed: () {
                      setState(() {
                        isNetwork =! isNetwork;
                      });
                    },
                    style: ButtonStyle(
                      backgroundColor: WidgetStateProperty.all(isNetwork ? Color(0xFF4F6BFE).withAlpha(30) : Colors.grey[200]),
                      padding: WidgetStateProperty.all(EdgeInsets.symmetric(horizontal: 10.0)),
                    ),
                    child: Row(
                      spacing: 4.0,
                      children: [
                        Icon(Icons.travel_explore, color: isNetwork ? Color(0xFF4F6BFE) : Colors.black, size: 18.0,),
                        Text('联网', style: TextStyle(color: isNetwork ? Color(0xFF4F6BFE) : Colors.black, fontSize: 13.0),),
                      ],
                    ),
                  ),
                ),
                Spacer(),
                SizedBox(
                  height: 30.0,
                  width: 30.0,
                  child: PopupMenuButton(
                    icon: Icon(Icons.add),
                    padding: EdgeInsets.zero,
                    tooltip: '',
                    offset: Offset(-35.0, 0),
                    constraints: BoxConstraints(maxWidth: 160),
                    color: Colors.white,
                    itemBuilder: (BuildContext context) {
                      return [
                        PopupMenuItem(value: 'camera', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.camera_alt_outlined), Text('拍照识文字')],)),
                        PopupMenuItem(value: 'image', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.image_outlined), Text('图片识文字')],)),
                        PopupMenuItem(value: 'file', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.file_present_outlined), Text('文件')],)),
                      ];
                    },
                    onSelected: (value) {
                      debugPrint(value);
                    },
                  ),
                ),
                SizedBox(
                  height: 30.0,
                  width: 30.0,
                  child: IconButton(
                    onPressed: disabled ? null : () => handleSubmit(),
                    icon: loading ?
                      SizedBox(height: 16.0, width: 16.0, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2.0,))
                      :
                      Icon(Icons.send, color: Colors.white, size: 18.0)
                    ,
                    style: ButtonStyle(
                      backgroundColor: WidgetStateProperty.all(disabled ? Color(0xFF4F6BFE).withAlpha(100) : Color(0xFF4F6BFE)),
                      padding: WidgetStateProperty.all(EdgeInsets.zero)
                    ),
                    disabledColor: Colors.red,
                  ),
                )
              ],
            ),
          ],
        ),
      ),
    ],
  )
);

final response = await dio.post(
  '$baseURL/v1/chat/completions',
  options: Options(
    // 响应超时
    receiveTimeout: const Duration(seconds: 60),
    headers: {
      "Content-Type": "application/json",
      "Authorization": "Bearer $apiKEY",
    },
    // 设置响应类型为流式响应
    responseType: ResponseType.stream,
  ),
  data: {
    // 多轮会话
    'messages': widget.multiConversation ? chatStore.historySession : [{'role': 'user', 'content': editorValue}],
    'model': 'deepseek-chat', // deepseek-chat对话模型 deepseek-reasoner推理模型
    'stream': true, // 流式输出
    'max_tokens': 8192, // 限制一次请求中模型生成 completion 的最大 token 数(默认使用 4096)
    'temperature': 0.4, // 严谨采样 越低越严谨(默认1)
  }
);