import { useState, useCallback } from 'react';
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import { toast } from 'sonner';
import { fileClient } from '../api/fileClient';
import type { FileType } from '../types/file';

// 文件管理钩子
export interface UseFileManagementOptions {
  defaultPageSize?: number;
}

export const useFileManagement = (options: UseFileManagementOptions = {}) => {
  const { defaultPageSize = 10 } = options;

  const [pagination, setPagination] = useState({
    current: 1,
    pageSize: defaultPageSize,
    total: 0,
  });
  const [searchText, setSearchText] = useState('');
  const queryClient = useQueryClient();

  // 获取文件列表
  const {
    data: filesData,
    isLoading,
    error,
    refetch
  } = useQuery({
    queryKey: ['files', pagination.current, pagination.pageSize, searchText],
    queryFn: async () => {
      const response = await fileClient.$get({
        query: {
          page: pagination.current,
          pageSize: pagination.pageSize,
          keyword: searchText || undefined,
        },
      });

      if (!response.ok) {
        throw new Error('获取文件列表失败');
      }

      return await response.json();
    },
  });

  // 更新文件信息
  const updateFileMutation = useMutation({
    mutationFn: async ({ id, data }: { id: number; data: { name: string; description?: string } }) => {
      const response = await fileClient[':id'].$put({
        param: { id: Number(id) },
        json: data,
      });

      if (!response.ok) {
        throw new Error('更新文件失败');
      }

      return await response.json();
    },
    onSuccess: () => {
      toast.success('文件信息更新成功');
      queryClient.invalidateQueries({ queryKey: ['files'] });
    },
    onError: (error: Error) => {
      toast.error(`更新失败: ${error.message}`);
    },
  });

  // 删除文件
  const deleteFileMutation = useMutation({
    mutationFn: async (id: number) => {
      const response = await fileClient[':id'].$delete({
        param: { id: Number(id) },
      });

      if (!response.ok) {
        throw new Error('删除文件失败');
      }
    },
    onSuccess: () => {
      toast.success('文件删除成功');
      queryClient.invalidateQueries({ queryKey: ['files'] });
    },
    onError: (error: Error) => {
      toast.error(`删除失败: ${error.message}`);
    },
  });

  // 搜索文件
  const handleSearch = useCallback((text: string) => {
    setSearchText(text);
    setPagination(prev => ({ ...prev, current: 1 }));
  }, []);

  // 分页处理
  const handlePageChange = useCallback((page: number, pageSize: number) => {
    setPagination(prev => ({ ...prev, current: page, pageSize }));
  }, []);

  // 文件预览
  const handlePreview = useCallback((file: FileType) => {
    if (isPreviewable(file.type)) {
      window.open(file.fullUrl, '_blank');
    } else {
      toast.warning('该文件类型不支持预览');
    }
  }, []);

  // 文件下载
  const handleDownload = useCallback((file: FileType) => {
    const a = document.createElement('a');
    a.href = file.fullUrl;
    a.download = file.name;
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
  }, []);

  // 检查是否为可预览的文件类型
  const isPreviewable = (fileType: string | null) => {
    if (!fileType) return false;
    return fileType.startsWith('image/') || fileType.startsWith('video/');
  };

  return {
    // 数据
    files: filesData?.data || [],
    pagination: filesData?.pagination || pagination,

    // 状态
    isLoading,
    error,
    searchText,

    // 操作
    handleSearch,
    handlePageChange,
    handlePreview,
    handleDownload,
    updateFile: updateFileMutation.mutateAsync,
    deleteFile: deleteFileMutation.mutateAsync,
    refetch,

    // 工具函数
    isPreviewable,
  };
};