/**
 * useDeepAnalysisData Hook
 *
 * 管理深度分析模块的数据获取逻辑：
 * - 按 Tab 懒加载数据
 * - 已加载数据缓存，避免重复请求
 * - 竞态条件处理
 */

import { useState, useCallback, useRef, useEffect } from 'react';
import axios from '@utils/axiosConfig';
import { logger } from '@utils/logger';
import type {
  ApiKey,
  ApiLoadingState,
  DataState,
  UseDeepAnalysisDataReturn,
} from '../types';
import { TAB_API_MAP } from '../types';

/** API 端点映射 */
const API_ENDPOINTS: Record<ApiKey, string> = {
  comprehensive: '/api/company/comprehensive-analysis',
  valueChain: '/api/company/value-chain-analysis',
  keyFactors: '/api/company/key-factors-timeline',
  industryRank: '/api/financial/industry-rank',
};

/** 初始数据状态 */
const initialDataState: DataState = {
  comprehensive: null,
  valueChain: null,
  keyFactors: null,
  industryRank: null,
};

/** 初始 loading 状态 */
const initialLoadingState: ApiLoadingState = {
  comprehensive: false,
  valueChain: false,
  keyFactors: false,
  industryRank: false,
};

/**
 * 深度分析数据 Hook
 *
 * @param stockCode 股票代码
 * @returns 数据、loading 状态、加载函数
 */
export const useDeepAnalysisData = (stockCode: string): UseDeepAnalysisDataReturn => {
  // 数据状态
  const [data, setData] = useState<DataState>(initialDataState);

  // Loading 状态
  const [loading, setLoading] = useState<ApiLoadingState>(initialLoadingState);

  // 已加载的接口记录
  const loadedApisRef = useRef<Record<ApiKey, boolean>>({
    comprehensive: false,
    valueChain: false,
    keyFactors: false,
    industryRank: false,
  });

  // 当前 stockCode（用于竞态条件检测）
  const currentStockCodeRef = useRef(stockCode);

  /**
   * 加载指定 API 数据
   */
  const loadApiData = useCallback(
    async (apiKey: ApiKey) => {
      if (!stockCode) return;

      // 已加载则跳过
      if (loadedApisRef.current[apiKey]) return;

      // 设置 loading
      setLoading((prev) => ({ ...prev, [apiKey]: true }));

      try {
        const endpoint = `${API_ENDPOINTS[apiKey]}/${stockCode}`;
        const { data: response } = await axios.get(endpoint);

        // 检查 stockCode 是否已变更（防止竞态）
        if (currentStockCodeRef.current !== stockCode) return;

        if (response.success) {
          setData((prev) => ({ ...prev, [apiKey]: response.data }));
          loadedApisRef.current[apiKey] = true;
        }
      } catch (err) {
        logger.error('DeepAnalysis', `loadApiData:${apiKey}`, err, { stockCode });
      } finally {
        // 清除 loading（再次检查 stockCode）
        if (currentStockCodeRef.current === stockCode) {
          setLoading((prev) => ({ ...prev, [apiKey]: false }));
        }
      }
    },
    [stockCode]
  );

  /**
   * 根据 Tab 加载对应数据
   */
  const loadTabData = useCallback(
    (tabKey: string) => {
      const apiKey = TAB_API_MAP[tabKey];
      if (apiKey) {
        loadApiData(apiKey);
      }
    },
    [loadApiData]
  );

  /**
   * 重置所有数据
   */
  const resetData = useCallback(() => {
    setData(initialDataState);
    setLoading(initialLoadingState);
    loadedApisRef.current = {
      comprehensive: false,
      valueChain: false,
      keyFactors: false,
      industryRank: false,
    };
  }, []);

  // stockCode 变更时重置并加载默认数据
  useEffect(() => {
    if (stockCode) {
      currentStockCodeRef.current = stockCode;
      resetData();
      // 只加载默认 Tab（comprehensive）
      loadApiData('comprehensive');
    }
  }, [stockCode, loadApiData, resetData]);

  return {
    data,
    loading,
    loadTabData,
    resetData,
  };
};

export default useDeepAnalysisData;