// MindsDB连接器 - 模拟实现，避免第三方包兼容性问题
export interface MindsDBConfig {
  host: string
  port: number
  username: string
  password: string
  database?: string
}

export interface AIQueryRequest {
  query: string
  model?: string
  parameters?: Record<string, any>
  useCache?: boolean
}

export interface SearchRequest {
  keyword: string
  type: "user" | "traffic" | "all"
  filters?: Record<string, any>
  limit?: number
  offset?: number
}

export interface VersionInfo {
  version: string
  timestamp: string
  changes: string[]
  author: string
}

// 模拟数据
const mockUsers = [
  {
    id: "user_001",
    type: "user",
    username: "张三",
    phone: "13800138001",
    email: "zhangsan@example.com",
    tags: ["高价值用户", "活跃用户"],
    rfm_score: 85,
    last_active: "2024-01-15T10:30:00Z",
    created_at: "2023-06-01T08:00:00Z",
    relevance_score: 0.95,
  },
  {
    id: "user_002",
    type: "user",
    username: "李四",
    phone: "13800138002",
    email: "lisi@example.com",
    tags: ["新用户", "潜在客户"],
    rfm_score: 65,
    last_active: "2024-01-14T15:20:00Z",
    created_at: "2024-01-01T09:00:00Z",
    relevance_score: 0.88,
  },
]

const mockTrafficKeywords = [
  {
    id: "keyword_001",
    type: "traffic",
    keyword: "数据分析",
    category: "技术",
    search_volume: 12000,
    competition: "高",
    cpc: 3.5,
    trend_data: [100, 120, 110, 130, 125],
    last_updated: "2024-01-15T12:00:00Z",
    relevance_score: 0.92,
  },
  {
    id: "keyword_002",
    type: "traffic",
    keyword: "用户画像",
    category: "营销",
    search_volume: 8500,
    competition: "中",
    cpc: 2.8,
    trend_data: [80, 90, 95, 100, 105],
    last_updated: "2024-01-15T11:30:00Z",
    relevance_score: 0.87,
  },
]

export class MindsDBConnector {
  private connected = false
  private cache: Map<string, any> = new Map()

  constructor(private config: MindsDBConfig) {}

  // 连接到MindsDB（模拟）
  async connect(): Promise<void> {
    try {
      // 模拟连接延迟
      await new Promise((resolve) => setTimeout(resolve, 100))
      this.connected = true
      console.log("MindsDB连接成功（模拟）")
    } catch (error) {
      console.error("MindsDB连接失败:", error)
      throw error
    }
  }

  // 断开连接
  async disconnect(): Promise<void> {
    if (this.connected) {
      this.connected = false
    }
  }

  // AI增强查询（模拟）
  async aiQuery(request: AIQueryRequest): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    const cacheKey = `ai_query_${JSON.stringify(request)}`

    // 检查缓存
    if (request.useCache && this.cache.has(cacheKey)) {
      return this.cache.get(cacheKey)
    }

    try {
      // 模拟AI查询结果
      const result = {
        response: `基于查询"${request.query}"的AI分析结果`,
        confidence: 0.85,
        suggestions: [`${request.query}相关建议1`, `${request.query}相关建议2`, `${request.query}相关建议3`],
        insights: [
          {
            title: "数据洞察1",
            description: `关于"${request.query}"的重要发现`,
            confidence: 0.9,
          },
          {
            title: "数据洞察2",
            description: `"${request.query}"的趋势分析`,
            confidence: 0.8,
          },
        ],
        intent: this.analyzeIntent(request.query),
        filters: this.generateFilters(request.query),
      }

      // 缓存结果
      if (request.useCache) {
        this.cache.set(cacheKey, result)
      }

      return result
    } catch (error) {
      console.error("AI查询失败:", error)
      throw error
    }
  }

  // 智能搜索（模拟）
  async intelligentSearch(request: SearchRequest): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    const cacheKey = `search_${JSON.stringify(request)}`

    // 检查缓存
    if (this.cache.has(cacheKey)) {
      return this.cache.get(cacheKey)
    }

    try {
      let results: any[] = []

      switch (request.type) {
        case "user":
          results = this.searchUsers(request)
          break
        case "traffic":
          results = this.searchTraffic(request)
          break
        case "all":
          results = [...this.searchUsers(request), ...this.searchTraffic(request)]
          break
      }

      // 应用过滤器
      if (request.filters) {
        results = this.applyFilters(results, request.filters)
      }

      // 分页
      const start = request.offset || 0
      const end = start + (request.limit || 50)
      results = results.slice(start, end)

      // 缓存结果
      this.cache.set(cacheKey, results)

      return results
    } catch (error) {
      console.error("智能搜索失败:", error)
      throw error
    }
  }

  // 搜索用户
  private searchUsers(request: SearchRequest): any[] {
    const keyword = request.keyword.toLowerCase()
    return mockUsers.filter(
      (user) =>
        user.username.toLowerCase().includes(keyword) ||
        user.phone.includes(keyword) ||
        user.email.toLowerCase().includes(keyword) ||
        user.tags.some((tag) => tag.toLowerCase().includes(keyword)),
    )
  }

  // 搜索流量关键词
  private searchTraffic(request: SearchRequest): any[] {
    const keyword = request.keyword.toLowerCase()
    return mockTrafficKeywords.filter(
      (traffic) => traffic.keyword.toLowerCase().includes(keyword) || traffic.category.toLowerCase().includes(keyword),
    )
  }

  // 应用过滤器
  private applyFilters(results: any[], filters: Record<string, any>): any[] {
    return results.filter((item) => {
      return Object.entries(filters).every(([key, value]) => {
        if (typeof value === "object" && value.$gte) {
          return item[key] >= value.$gte
        }
        return item[key] === value
      })
    })
  }

  // 分析查询意图
  private analyzeIntent(query: string): string {
    const lowerQuery = query.toLowerCase()

    if (lowerQuery.includes("高价值") || lowerQuery.includes("vip")) {
      return "high_value_users"
    }
    if (lowerQuery.includes("最近") || lowerQuery.includes("活跃")) {
      return "recent_activity"
    }
    if (lowerQuery.includes("流量") || lowerQuery.includes("关键词")) {
      return "traffic_analysis"
    }

    return "general_search"
  }

  // 生成过滤器
  private generateFilters(query: string): Record<string, any> {
    const filters: Record<string, any> = {}
    const lowerQuery = query.toLowerCase()

    if (lowerQuery.includes("高价值")) {
      filters.rfm_score = { $gte: 80 }
    }
    if (lowerQuery.includes("最近")) {
      filters.last_active = { $gte: new Date(Date.now() - 7 * 24 * 60 * 60 * 1000) }
    }

    return filters
  }

  // 用户数据分析（模拟）
  async analyzeUserBehavior(userId: string): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      return {
        prediction: "高价值用户",
        confidence: 0.85,
        explanation: `用户${userId}具有高活跃度和消费潜力`,
      }
    } catch (error) {
      console.error("用户行为分析失败:", error)
      throw error
    }
  }

  // 流量预测（模拟）
  async predictTrafficTrends(keyword: string, timeframe = "30d"): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      return {
        predicted_volume: Math.floor(Math.random() * 10000) + 5000,
        trend_direction: Math.random() > 0.5 ? "上升" : "下降",
        confidence_interval: [0.7, 0.9],
        factors: ["季节性变化", "行业趋势", "竞争环境"],
      }
    } catch (error) {
      console.error("流量预测失败:", error)
      throw error
    }
  }

  // 版本管理（模拟）
  async createVersion(data: any, author: string, changes: string[]): Promise<VersionInfo> {
    const version = `v${Date.now()}`
    const timestamp = new Date().toISOString()

    const versionInfo: VersionInfo = {
      version,
      timestamp,
      changes,
      author,
    }

    try {
      // 模拟存储版本信息
      console.log("创建版本:", versionInfo)
      return versionInfo
    } catch (error) {
      console.error("创建版本失败:", error)
      throw error
    }
  }

  // 获取版本历史（模拟）
  async getVersionHistory(limit = 50): Promise<VersionInfo[]> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      // 模拟版本历史数据
      return [
        {
          version: "v1704067200000",
          timestamp: "2024-01-01T00:00:00Z",
          changes: ["初始版本", "基础功能实现"],
          author: "系统管理员",
        },
        {
          version: "v1704153600000",
          timestamp: "2024-01-02T00:00:00Z",
          changes: ["添加用户搜索功能", "优化界面显示"],
          author: "开发团队",
        },
      ]
    } catch (error) {
      console.error("获取版本历史失败:", error)
      throw error
    }
  }

  // 恢复到指定版本（模拟）
  async restoreVersion(version: string): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      console.log(`恢复到版本: ${version}`)
      return { success: true, message: `已恢复到版本 ${version}` }
    } catch (error) {
      console.error("恢复版本失败:", error)
      throw error
    }
  }

  // 实时数据同步（模拟）
  async syncRealTimeData(source: string, data: any): Promise<void> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      console.log(`同步数据源 ${source}:`, data)
    } catch (error) {
      console.error("实时数据同步失败:", error)
      throw error
    }
  }

  // 清理缓存
  clearCache(): void {
    this.cache.clear()
  }

  // 获取系统状态（模拟）
  async getSystemStatus(): Promise<any> {
    if (!this.connected) {
      await this.connect()
    }

    try {
      return {
        userCount: 4000000000, // 40亿用户
        keywordCount: 150000,
        versionCount: 25,
        avgResponseTime: 120,
        cacheSize: this.cache.size,
        connected: this.connected,
      }
    } catch (error) {
      console.error("获取系统状态失败:", error)
      throw error
    }
  }
}

// 单例模式
let mindsDBInstance: MindsDBConnector | null = null

export function getMindsDBConnector(config?: MindsDBConfig): MindsDBConnector {
  if (!mindsDBInstance && config) {
    mindsDBInstance = new MindsDBConnector(config)
  }

  if (!mindsDBInstance) {
    // 提供默认配置
    const defaultConfig: MindsDBConfig = {
      host: "localhost",
      port: 47334,
      username: "mindsdb",
      password: "",
      database: "mindsdb",
    }
    mindsDBInstance = new MindsDBConnector(defaultConfig)
  }

  return mindsDBInstance
}
