import type { MockMethod } from "vite-plugin-mock";

// 模拟聊天记录存储（内存中）
interface ChatMessage {
  id: string;
  role: 'user' | 'assistant';
  content: string;
  time: string;
}

// 生成模拟历史聊天记录
const generateMockChatHistory = (): ChatMessage[] => {
  const history: ChatMessage[] = [
    {
      id: '1',
      role: 'assistant',
      content: '您好！我是您的 AI 智能助手，有什么可以帮助您的吗？',
      time: new Date(Date.now() - 86400000 * 2).toLocaleString()
    },
    {
      id: '2',
      role: 'user',
      content: '如何管理系统用户？',
      time: new Date(Date.now() - 86400000 * 2 + 60000).toLocaleString()
    },
    {
      id: '3',
      role: 'assistant',
      content: '系统用户管理在「用户管理」菜单中，您可以进行以下操作：\n1. 查看用户列表\n2. 添加新用户\n3. 编辑用户信息\n4. 禁用/启用用户账号',
      time: new Date(Date.now() - 86400000 * 2 + 120000).toLocaleString()
    },
    {
      id: '4',
      role: 'user',
      content: '系统有哪些功能模块？',
      time: new Date(Date.now() - 86400000).toLocaleString()
    },
    {
      id: '5',
      role: 'assistant',
      content: '本系统包含以下功能模块：\n- 仪表盘：数据概览\n- 用户管理：系统用户管理\n- 系统管理：菜单、角色管理\n- 数据统计：报表分析\n- AI 助手：智能问答',
      time: new Date(Date.now() - 86400000 + 60000).toLocaleString()
    },
    {
      id: '6',
      role: 'user',
      content: '如何导出数据报表？',
      time: new Date(Date.now() - 43200000).toLocaleString()
    },
    {
      id: '7',
      role: 'assistant',
      content: '导出数据报表步骤：\n1. 进入「数据统计」页面\n2. 选择查询条件\n3. 点击「导出」按钮\n4. 选择导出格式（Excel/PDF）\n5. 下载生成的报表文件',
      time: new Date(Date.now() - 43200000 + 60000).toLocaleString()
    },
    {
      id: '8',
      role: 'user',
      content: '如何配置菜单权限？',
      time: new Date(Date.now() - 3600000).toLocaleString()
    },
    {
      id: '9',
      role: 'assistant',
      content: '菜单权限配置在「系统管理 > 菜单管理」中：\n1. 创建菜单项\n2. 设置菜单图标和路径\n3. 为角色分配菜单权限\n4. 保存后权限即时生效',
      time: new Date(Date.now() - 3600000 + 60000).toLocaleString()
    },
    {
      id: '10',
      role: 'user',
      content: '如何修改个人资料？',
      time: new Date(Date.now() - 1800000).toLocaleString()
    },
    {
      id: '11',
      role: 'assistant',
      content: '修改个人资料：\n1. 点击右上角用户名\n2. 选择「个人中心」\n3. 编辑个人信息\n4. 点击「保存」按钮',
      time: new Date(Date.now() - 1800000 + 60000).toLocaleString()
    },
    {
      id: '12',
      role: 'user',
      content: '帮助',
      time: new Date(Date.now() - 900000).toLocaleString()
    },
    {
      id: '13',
      role: 'assistant',
      content: '我可以帮您：\n- 解答系统使用问题\n- 提供操作指导\n- 解释功能说明\n请直接输入您的问题！',
      time: new Date(Date.now() - 900000 + 60000).toLocaleString()
    }
  ];
  return history;
};

const chatHistory: ChatMessage[] = generateMockChatHistory();

export default [
  // 登录接口
  {
    url: "/api/upms/auth/login",
    method: "post",
    response: ({ body }) => {
      const { username, password } = body;

      if (username === "admin" && password === "123456") {
        return {
          code: 200,
          message: "登录成功",
          data: {
            token: "mock_token_" + Date.now(),
            userInfo: {
              id: "1",
              username: "admin",
              nickname: "管理员",
              avatar: "",
              roles: ["admin"],
            },
          },
        };
      }

      return {
        code: 401,
        message: "用户名或密码错误",
        data: null,
      };
    },
  },

  // 获取用户信息
  {
    url: "/api/upms/user/info",
    method: "get",
    response: () => {
      return {
        code: 200,
        message: "success",
        data: {
          id: "1",
          username: "admin",
          nickname: "管理员",
          avatar: "",
          roles: ["admin"],
          email: "admin@example.com",
          phone: "13800138000",
        },
      };
    },
  },

  // 获取菜单列表
  {
    url: "/api/upms/menu/list",
    method: "get",
    response: () => {
      return {
        code: 200,
        message: "success",
        data: [
          {
            id: "1",
            name: "仪表盘",
            path: "/dashboard",
            icon: "Odometer",
          },
          {
            id: "2",
            name: "用户管理",
            path: "/user",
            icon: "User",
          },
          {
            id: "3",
            name: "系统管理",
            path: "/system",
            icon: "Setting",
            children: [
              {
                id: "3-1",
                name: "菜单管理",
                path: "/system/menu",
                icon: "Menu",
              },
              {
                id: "3-2",
                name: "角色管理",
                path: "/system/role",
                icon: "UserFilled",
              },
            ],
          },
          {
            id: "4",
            name: "数据统计",
            path: "/statistics",
            icon: "TrendCharts",
          },
          {
            id: "5",
            name: "AI 助手",
            path: "/ai-chat",
            icon: "ChatDotRound",
          },
          {
            id: "6",
            name: "文件管理",
            path: "/file",
            icon: "Folder",
          },
        ],
      };
    },
  },

  // 用户列表
  {
    url: "/api/upms/user/list",
    method: "get",
    response: ({ query }) => {
      const { page = 1, size = 10 } = query;

      // 生成模拟数据
      const list = Array.from({ length: size }, (_, i) => ({
        id: String((page - 1) * size + i + 1),
        username: `user${(page - 1) * size + i + 1}`,
        nickname: `用户${(page - 1) * size + i + 1}`,
        email: `user${(page - 1) * size + i + 1}@example.com`,
        status: Math.random() > 0.3 ? 1 : 0,
        createTime: "2024-01-01 12:00:00",
      }));

      return {
        code: 200,
        message: "success",
        data: {
          list,
          total: 100,
        },
      };
    },
  },

  // 退出登录
  {
    url: "/api/upms/auth/logout",
    method: "post",
    response: () => {
      return {
        code: 200,
        message: "退出成功",
        data: null,
      };
    },
  },

  // 获取聊天记录列表（分页）
  {
    url: "/api/upms/ai/chat/history",
    method: "get",
    response: ({ query }) => {
      const page = parseInt(query.page as string) || 1;
      const size = parseInt(query.size as string) || 10;

      // 计算分页
      const total = chatHistory.length;
      const start = (page - 1) * size;
      const end = start + size;
      const list = chatHistory.slice(start, end);

      return {
        code: 200,
        message: "success",
        data: {
          list,
          total,
          page,
          size,
          hasMore: end < total
        }
      };
    },
  },

  // AI 对话接口 (POST - 返回 JSON，适用于代理模式)
  {
    url: "/api/upms/ai/chat",
    method: "post",
    response: ({ body }) => {
      const { question } = body;

      // AI 回复知识库
      const knowledgeBase: Record<string, string> = {
        "如何管理系统用户？": "系统用户管理在「用户管理」菜单中，您可以进行以下操作：\n1. 查看用户列表\n2. 添加新用户\n3. 编辑用户信息\n4. 禁用/启用用户账号",
        "如何配置菜单权限？": "菜单权限配置在「系统管理 > 菜单管理」中：\n1. 创建菜单项\n2. 设置菜单图标和路径\n3. 为角色分配菜单权限\n4. 保存后权限即时生效",
        "系统有哪些功能模块？": "本系统包含以下功能模块：\n- 仪表盘：数据概览\n- 用户管理：系统用户管理\n- 系统管理：菜单、角色管理\n- 数据统计：报表分析\n- AI 助手：智能问答",
        "如何导出数据报表？": "导出数据报表步骤：\n1. 进入「数据统计」页面\n2. 选择查询条件\n3. 点击「导出」按钮\n4. 选择导出格式（Excel/PDF）\n5. 下载生成的报表文件",
        "如何修改个人资料？": "修改个人资料：\n1. 点击右上角用户名\n2. 选择「个人中心」\n3. 编辑个人信息\n4. 点击「保存」按钮",
        "你好": "您好！很高兴为您服务，请问有什么可以帮助您的？",
        "帮助": "我可以帮您：\n- 解答系统使用问题\n- 提供操作指导\n- 解释功能说明\n请直接输入您的问题！"
      };

      // 查找回复
      let reply = '';
      for (const key in knowledgeBase) {
        if (question.includes(key) || key.includes(question)) {
          reply = knowledgeBase[key];
          break;
        }
      }

      // 默认回复
      if (!reply) {
        reply = `感谢您的提问！关于"${question}"，我建议您：\n\n1. 查看相关功能模块的说明文档\n2. 联系系统管理员获取帮助\n3. 或者尝试在快捷问题中寻找类似问题\n\n如果您需要更详细的帮助，请联系技术支持。`;
      }

      return {
        code: 200,
        message: "success",
        data: { reply }
      };
    },
  },

  // AI 对话接口 (GET - SSE 流式输出，适用于 Mock 模式)
  {
    url: "/api/upms/ai/chat",
    method: "get",
    rawResponse: async (req, res) => {
      // 从 query 参数获取问题
      const url = new URL(req.url || '', `http://${req.headers.host}`);
      const question = url.searchParams.get('question') || '';

      // AI 回复知识库
      const knowledgeBase: Record<string, string> = {
        "如何管理系统用户？": "系统用户管理在「用户管理」菜单中，您可以进行以下操作：\n1. 查看用户列表\n2. 添加新用户\n3. 编辑用户信息\n4. 禁用/启用用户账号",
        "如何配置菜单权限？": "菜单权限配置在「系统管理 > 菜单管理」中：\n1. 创建菜单项\n2. 设置菜单图标和路径\n3. 为角色分配菜单权限\n4. 保存后权限即时生效",
        "系统有哪些功能模块？": "本系统包含以下功能模块：\n- 仪表盘：数据概览\n- 用户管理：系统用户管理\n- 系统管理：菜单、角色管理\n- 数据统计：报表分析\n- AI 助手：智能问答",
        "如何导出数据报表？": "导出数据报表步骤：\n1. 进入「数据统计」页面\n2. 选择查询条件\n3. 点击「导出」按钮\n4. 选择导出格式（Excel/PDF）\n5. 下载生成的报表文件",
        "如何修改个人资料？": "修改个人资料：\n1. 点击右上角用户名\n2. 选择「个人中心」\n3. 编辑个人信息\n4. 点击「保存」按钮",
        "你好": "您好！很高兴为您服务，请问有什么可以帮助您的？",
        "帮助": "我可以帮您：\n- 解答系统使用问题\n- 提供操作指导\n- 解释功能说明\n请直接输入您的问题！"
      };

      // 查找回复
      let reply = '';
      for (const key in knowledgeBase) {
        if (question.includes(key) || key.includes(question)) {
          reply = knowledgeBase[key];
          break;
        }
      }

      // 默认回复
      if (!reply) {
        reply = `感谢您的提问！关于"${question}"，我建议您：\n\n1. 查看相关功能模块的说明文档\n2. 联系系统管理员获取帮助\n3. 或者尝试在快捷问题中寻找类似问题\n\n如果您需要更详细的帮助，请联系技术支持。`;
      }

      // 设置 SSE 响应头
      res.setHeader('Content-Type', 'text/event-stream');
      res.setHeader('Cache-Control', 'no-cache');
      res.setHeader('Connection', 'keep-alive');

      // 流式发送回复，每个字延迟 50ms
      const chars = reply.split('');
      for (let i = 0; i < chars.length; i++) {
        const data = {
          content: chars[i],
          index: i,
          total: chars.length,
          done: i === chars.length - 1
        };
        res.write(`data: ${JSON.stringify(data)}\n\n`);
        await new Promise(resolve => setTimeout(resolve, 50));
      }

      res.end();
    },
  },

  // ========== 文件管理接口 ==========

  // 获取文件列表
  {
    url: "/api/file/list",
    method: "get",
    response: ({ query }) => {
      const page = parseInt(query.page as string) || 1;
      const size = parseInt(query.size as string) || 10;
      const filename = (query.filename as string) || '';
      const fileType = (query.fileType as string) || '';

      // 模拟文件数据
      const allFiles = [
        { id: '1', filename: '项目需求文档.pdf', fileType: 'document', size: 2048576, uploader: '张三', uploadTime: '2026-03-15 10:30:00', url: '' },
        { id: '2', filename: '产品原型图.png', fileType: 'image', size: 512000, uploader: '李四', uploadTime: '2026-03-15 09:15:00', url: 'https://via.placeholder.com/800x600.png?text=Product+Prototype' },
        { id: '3', filename: '会议记录.docx', fileType: 'document', size: 102400, uploader: '王五', uploadTime: '2026-03-14 16:45:00', url: '' },
        { id: '4', filename: '演示视频.mp4', fileType: 'video', size: 52428800, uploader: '赵六', uploadTime: '2026-03-14 14:20:00', url: '' },
        { id: '5', filename: '背景音乐.mp3', fileType: 'audio', size: 3145728, uploader: '孙七', uploadTime: '2026-03-13 11:00:00', url: '' },
        { id: '6', filename: '数据库备份.sql', fileType: 'other', size: 10485760, uploader: '张三', uploadTime: '2026-03-13 09:30:00', url: '' },
        { id: '7', filename: '系统架构图.jpg', fileType: 'image', size: 1536000, uploader: '李四', uploadTime: '2026-03-12 15:20:00', url: 'https://via.placeholder.com/800x600.png?text=Architecture' },
        { id: '8', filename: 'API文档.pdf', fileType: 'document', size: 3145728, uploader: '王五', uploadTime: '2026-03-12 10:00:00', url: '' },
        { id: '9', filename: '测试报告.xlsx', fileType: 'document', size: 512000, uploader: '赵六', uploadTime: '2026-03-11 16:30:00', url: '' },
        { id: '10', filename: '部署脚本.sh', fileType: 'other', size: 10240, uploader: '孙七', uploadTime: '2026-03-11 09:00:00', url: '' },
        { id: '11', filename: '用户手册.pdf', fileType: 'document', size: 4194304, uploader: '张三', uploadTime: '2026-03-10 14:00:00', url: '' },
        { id: '12', filename: '团队合影.jpg', fileType: 'image', size: 2621440, uploader: '李四', uploadTime: '2026-03-10 10:30:00', url: 'https://via.placeholder.com/800x600.png?text=Team+Photo' },
      ];

      // 筛选
      let filteredFiles = allFiles.filter(file => {
        const matchName = filename ? file.filename.toLowerCase().includes(filename.toLowerCase()) : true;
        const matchType = fileType ? file.fileType === fileType : true;
        return matchName && matchType;
      });

      // 分页
      const total = filteredFiles.length;
      const start = (page - 1) * size;
      const end = start + size;
      const list = filteredFiles.slice(start, end);

      return {
        code: 200,
        message: "success",
        data: {
          list,
          total,
          page,
          size
        }
      };
    },
  },

  // 上传文件
  {
    url: "/api/file/upload",
    method: "post",
    response: () => {
      return {
        code: 200,
        message: "上传成功",
        data: {
          id: String(Date.now()),
          filename: '新上传文件.pdf',
          fileType: 'document',
          size: 1024000,
          uploader: 'admin',
          uploadTime: new Date().toLocaleString(),
          url: ''
        }
      };
    },
  },

  // 删除文件
  {
    url: "/api/file/delete",
    method: "delete",
    response: () => {
      return {
        code: 200,
        message: "删除成功",
        data: null
      };
    },
  },

  // 下载文件
  {
    url: "/api/file/download",
    method: "get",
    rawResponse: async (req, res) => {
      const url = new URL(req.url || '', `http://${req.headers.host}`);
      const id = url.searchParams.get('id') || 'unknown';
      const filename = `file_${id}.txt`;

      res.setHeader('Content-Type', 'application/octet-stream');
      res.setHeader('Content-Disposition', `attachment; filename="${filename}"`);
      res.write('This is a mock file content for download.');
      res.end();
    },
  },
] as MockMethod[];