/**
 * DC模块 - 数据资产Hook
 * 
 * 管理数据资产库的状态和数据获取
 */

import { useState, useEffect } from 'react';
import type { Asset, AssetTabType } from '../types/portal';

// Mock数据
const mockAssets: Asset[] = [
  {
    id: 'asset-001',
    name: '2025糖尿病研究_AI提取结果.xlsx',
    type: 'processed',
    source: 'tool-b',
    rowCount: 150,
    tags: ['糖尿病', 'AI结构化'],
    modifiedAt: '2025-12-01T11:45:00Z',
    fileSize: 245760,
    fileKey: 'dc/outputs/task-001-result.xlsx'
  },
  {
    id: 'asset-002',
    name: '高血压病历原始数据.xlsx',
    type: 'raw',
    source: 'upload',
    rowCount: 320,
    tags: ['高血压', '原始数据'],
    modifiedAt: '2025-12-02T09:00:00Z',
    fileSize: 512000,
    fileKey: 'dc/uploads/hypertension-raw.xlsx'
  },
  {
    id: 'asset-003',
    name: '多中心数据合并结果.xlsx',
    type: 'processed',
    source: 'tool-a',
    rowCount: 580,
    tags: ['多中心', '数据合并'],
    modifiedAt: '2025-11-30T16:20:00Z',
    fileSize: 1048576,
    fileKey: 'dc/outputs/merged-data.xlsx'
  }
];

export const useAssets = (activeTab: AssetTabType) => {
  const [assets, setAssets] = useState<Asset[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  // 获取资产列表
  const fetchAssets = async () => {
    try {
      setLoading(true);
      
      // TODO: 替换为真实API调用
      // const response = await fetch(`/api/v1/dc/assets?type=${activeTab}`);
      // const data = await response.json();
      
      // 模拟API延迟
      await new Promise(resolve => setTimeout(resolve, 300));
      
      // 根据Tab筛选
      let filteredAssets = mockAssets;
      if (activeTab === 'processed') {
        filteredAssets = mockAssets.filter(a => a.type === 'processed');
      } else if (activeTab === 'raw') {
        filteredAssets = mockAssets.filter(a => a.type === 'raw');
      }
      
      setAssets(filteredAssets);
      setError(null);
    } catch (err) {
      setError(err instanceof Error ? err.message : '获取资产列表失败');
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    fetchAssets();
  }, [activeTab]);

  // 刷新资产列表
  const refresh = () => {
    fetchAssets();
  };

  // 删除资产
  const deleteAsset = async (id: string) => {
    // TODO: 实现删除逻辑
    console.log('Delete asset:', id);
    setAssets(assets.filter(a => a.id !== id));
  };

  return {
    assets,
    loading,
    error,
    refresh,
    deleteAsset
  };
};