// src/services/mcpService.js
// MCP (Model Context Protocol) 服务层
// 用于与FastAPI后端的MCP工具进行交互

import axios from 'axios';
import { getApiBase } from '../utils/apiConfig';
import { logger } from '../utils/logger';

/**
 * MCP API客户端
 */
class MCPService {
  constructor() {
    this.baseURL = `${getApiBase()}/mcp`;
    this.client = axios.create({
      baseURL: this.baseURL,
      timeout: 60000, // 60秒超时（MCP工具可能需要较长时间）
      headers: {
        'Content-Type': 'application/json',
      },
    });

    // 请求拦截器
    this.client.interceptors.request.use(
      (config) => {
        logger.debug('MCPService', 'Request', {
          url: config.url,
          method: config.method,
          data: config.data,
        });
        return config;
      },
      (error) => {
        logger.error('MCPService', 'Request Error', error);
        return Promise.reject(error);
      }
    );

    // 响应拦截器
    this.client.interceptors.response.use(
      (response) => {
        logger.debug('MCPService', 'Response', {
          url: response.config.url,
          status: response.status,
          data: response.data,
        });
        return response.data;
      },
      (error) => {
        logger.error('MCPService', 'Response Error', {
          url: error.config?.url,
          status: error.response?.status,
          message: error.message,
        });
        return Promise.reject(error);
      }
    );
  }

  /**
   * 列出所有可用的MCP工具
   * @returns {Promise<Object>} 工具列表
   */
  async listTools() {
    try {
      const response = await this.client.get('/tools');
      return {
        success: true,
        data: response.tools || [],
      };
    } catch (error) {
      return {
        success: false,
        error: error.message || '获取工具列表失败',
      };
    }
  }

  /**
   * 获取特定工具的定义
   * @param {string} toolName - 工具名称
   * @returns {Promise<Object>} 工具定义
   */
  async getTool(toolName) {
    try {
      const response = await this.client.get(`/tools/${toolName}`);
      return {
        success: true,
        data: response,
      };
    } catch (error) {
      return {
        success: false,
        error: error.message || '获取工具定义失败',
      };
    }
  }

  /**
   * 调用MCP工具
   * @param {string} toolName - 工具名称
   * @param {Object} arguments - 工具参数
   * @returns {Promise<Object>} 工具执行结果
   */
  async callTool(toolName, toolArguments) {
    try {
      const response = await this.client.post('/tools/call', {
        tool: toolName,
        arguments: toolArguments,
      });
      return {
        success: true,
        data: response.data || response,
      };
    } catch (error) {
      return {
        success: false,
        error: error.response?.data?.detail || error.message || '工具调用失败',
      };
    }
  }

  /**
   * 智能对话 - 根据用户输入自动选择合适的工具
   * @param {string} userMessage - 用户消息
   * @param {Array} conversationHistory - 对话历史（可选）
   * @returns {Promise<Object>} AI响应
   */
  async chat(userMessage, conversationHistory = []) {
    try {
      // 这里可以实现智能路由逻辑
      // 根据用户输入判断应该调用哪个工具

      // 示例：关键词匹配
      if (userMessage.includes('新闻') || userMessage.includes('资讯')) {
        return await this.callTool('search_china_news', {
          query: userMessage.replace(/新闻|资讯/g, '').trim(),
          top_k: 5,
        });
      } else if (userMessage.includes('概念') || userMessage.includes('板块')) {
        const query = userMessage.replace(/概念|板块/g, '').trim();
        return await this.callTool('search_concepts', {
          query,
          size: 5,
          sort_by: 'change_pct',
        });
      } else if (userMessage.includes('涨停')) {
        const query = userMessage.replace(/涨停/g, '').trim();
        return await this.callTool('search_limit_up_stocks', {
          query,
          mode: 'hybrid',
          page_size: 5,
        });
      } else if (/^[0-9]{6}$/.test(userMessage.trim())) {
        // 6位数字 = 股票代码
        return await this.callTool('get_stock_basic_info', {
          seccode: userMessage.trim(),
        });
      } else {
        // 默认：搜索新闻
        return await this.callTool('search_china_news', {
          query: userMessage,
          top_k: 5,
        });
      }
    } catch (error) {
      return {
        success: false,
        error: error.message || '对话处理失败',
      };
    }
  }

  /**
   * 工具类别枚举
   */
  static TOOL_CATEGORIES = {
    NEWS: 'news', // 新闻搜索
    STOCK: 'stock', // 股票信息
    CONCEPT: 'concept', // 概念板块
    LIMIT_UP: 'limit_up', // 涨停分析
    RESEARCH: 'research', // 研报搜索
    ROADSHOW: 'roadshow', // 路演信息
    FINANCIAL: 'financial', // 财务数据
    TRADE: 'trade', // 交易数据
  };

  /**
   * 常用工具快捷方式
   */
  async searchNews(query, topK = 5, exactMatch = false) {
    return await this.callTool('search_china_news', {
      query,
      top_k: topK,
      exact_match: exactMatch,
    });
  }

  async searchConcepts(query, size = 10, sortBy = 'change_pct') {
    return await this.callTool('search_concepts', {
      query,
      size,
      sort_by: sortBy,
    });
  }

  async searchLimitUpStocks(query, mode = 'hybrid', pageSize = 10) {
    return await this.callTool('search_limit_up_stocks', {
      query,
      mode,
      page_size: pageSize,
    });
  }

  async getStockInfo(seccode) {
    return await this.callTool('get_stock_basic_info', {
      seccode,
    });
  }

  async getStockConcepts(stockCode, size = 10) {
    return await this.callTool('get_stock_concepts', {
      stock_code: stockCode,
      size,
    });
  }

  async searchResearchReports(query, mode = 'hybrid', size = 5) {
    return await this.callTool('search_research_reports', {
      query,
      mode,
      size,
    });
  }

  async getConceptStatistics(days = 7, minStockCount = 3) {
    return await this.callTool('get_concept_statistics', {
      days,
      min_stock_count: minStockCount,
    });
  }
}

// 导出单例实例
export const mcpService = new MCPService();

// 导出类（供测试使用）
export default MCPService;