import { apiClient } from "./client";

export interface EntityJoinConfig {
  sourceTable: string;
  sourceColumn: string;
  referenceTable: string;
  referenceColumn: string;
  displayColumn: string;
  aliasColumn: string;
}

export interface EntityJoinResponse {
  data: Record<string, any>[];
  total: number;
  page: number;
  size: number;
  totalPages: number;
  entityJoinInfo?: {
    joinConfigs: EntityJoinConfig[];
    strategy: "full_join" | "cache_lookup";
    performance: {
      queryTime: number;
      cacheHitRate?: number;
    };
  };
}

export interface ReferenceTableColumn {
  columnName: string;
  displayName: string;
  dataType: string;
}

export interface CacheStatus {
  overallHitRate: number;
  caches: Array<{
    cacheKey: string;
    size: number;
    hitRate: number;
    lastUpdated: string;
  }>;
  summary: {
    totalCaches: number;
    totalSize: number;
    averageHitRate: number;
  };
}

/**
 * Entity 조인 기능 API
 */
export const entityJoinApi = {
  /**
   * Entity 조인이 포함된 테이블 데이터 조회
   */
  getTableDataWithJoins: async (
    tableName: string,
    params: {
      page?: number;
      size?: number;
      search?: Record<string, any>;
      sortBy?: string;
      sortOrder?: "asc" | "desc";
      enableEntityJoin?: boolean;
      additionalJoinColumns?: Array<{
        sourceTable: string;
        sourceColumn: string;
        joinAlias: string;
      }>;
      screenEntityConfigs?: Record<string, any>; // 🎯 화면별 엔티티 설정
      dataFilter?: any; // 🆕 데이터 필터
    } = {},
  ): Promise<EntityJoinResponse> => {
    const searchParams = new URLSearchParams();

    if (params.page) searchParams.append("page", params.page.toString());
    if (params.size) searchParams.append("size", params.size.toString());
    if (params.sortBy) searchParams.append("sortBy", params.sortBy);
    if (params.sortOrder) searchParams.append("sortOrder", params.sortOrder);
    if (params.enableEntityJoin !== undefined) {
      searchParams.append("enableEntityJoin", params.enableEntityJoin.toString());
    }

    // 검색 조건 추가
    if (params.search) {
      Object.entries(params.search).forEach(([key, value]) => {
        if (value !== undefined && value !== null && value !== "") {
          searchParams.append(key, String(value));
        }
      });
    }

    // 🔒 멀티테넌시: company_code 자동 필터링 활성화
    const autoFilter = {
      enabled: true,
      filterColumn: "company_code",
      userField: "companyCode",
    };

    const response = await apiClient.get(`/table-management/tables/${tableName}/data-with-joins`, {
      params: {
        ...params,
        search: params.search ? JSON.stringify(params.search) : undefined,
        additionalJoinColumns: params.additionalJoinColumns ? JSON.stringify(params.additionalJoinColumns) : undefined,
        screenEntityConfigs: params.screenEntityConfigs ? JSON.stringify(params.screenEntityConfigs) : undefined, // 🎯 화면별 엔티티 설정
        autoFilter: JSON.stringify(autoFilter), // 🔒 멀티테넌시 필터링
        dataFilter: params.dataFilter ? JSON.stringify(params.dataFilter) : undefined, // 🆕 데이터 필터
      },
    });
    return response.data.data;
  },

  /**
   * 테이블의 Entity 조인 설정 조회
   */
  getEntityJoinConfigs: async (
    tableName: string,
  ): Promise<{
    tableName: string;
    joinConfigs: EntityJoinConfig[];
    count: number;
  }> => {
    const response = await apiClient.get(`/table-management/tables/${tableName}/entity-joins`);
    return response.data.data;
  },

  /**
   * 참조 테이블의 표시 가능한 컬럼 목록 조회
   */
  getReferenceTableColumns: async (
    tableName: string,
  ): Promise<{
    tableName: string;
    columns: ReferenceTableColumn[];
    count: number;
  }> => {
    const response = await apiClient.get(`/table-management/reference-tables/${tableName}/columns`);
    return response.data.data;
  },

  /**
   * 컬럼 Entity 설정 업데이트
   */
  updateEntitySettings: async (
    tableName: string,
    columnName: string,
    settings: {
      webType: string;
      referenceTable?: string;
      referenceColumn?: string;
      displayColumn?: string;
      columnLabel?: string;
      description?: string;
    },
  ): Promise<void> => {
    await apiClient.put(`/table-management/tables/${tableName}/columns/${columnName}/entity-settings`, settings);
  },

  /**
   * 캐시 상태 조회
   */
  getCacheStatus: async (): Promise<CacheStatus> => {
    const response = await apiClient.get(`/table-management/cache/status`);
    return response.data.data;
  },

  /**
   * 캐시 무효화
   */
  invalidateCache: async (params?: { table?: string; keyColumn?: string; displayColumn?: string }): Promise<void> => {
    await apiClient.delete(`/table-management/cache`, { params });
  },

  /**
   * Entity 조인된 테이블의 추가 컬럼 목록 조회 (화면편집기용)
   */
  getEntityJoinColumns: async (
    tableName: string,
  ): Promise<{
    tableName: string;
    joinTables: Array<{
      tableName: string;
      currentDisplayColumn: string;
      availableColumns: Array<{
        columnName: string;
        columnLabel: string;
        dataType: string;
        description?: string;
      }>;
    }>;
    availableColumns: Array<{
      tableName: string;
      columnName: string;
      columnLabel: string;
      dataType: string;
      joinAlias: string;
      suggestedLabel: string;
    }>;
    summary: {
      totalJoinTables: number;
      totalAvailableColumns: number;
    };
  }> => {
    const response = await apiClient.get(`/table-management/tables/${tableName}/entity-join-columns`);
    return response.data.data;
  },

  /**
   * 공통 참조 테이블 자동 캐싱
   */
  preloadCommonCaches: async (): Promise<{
    preloadedCaches: number;
    caches: Array<{
      cacheKey: string;
      size: number;
      hitRate: number;
      lastUpdated: string;
    }>;
  }> => {
    const response = await apiClient.post(`/table-management/cache/preload`);
    return response.data.data;
  },
};