"use client";

import { useCallback } from "react";
import { toast } from "sonner";

/**
 * 触发浏览器文件下载。
 * chatbot-ui / agent-ui / doc-writer-ui / analysis-ui 的导出功能共用。
 */
export function useFileExport() {
  const download = useCallback(
    (content: string, filename: string, successMsg = "已导出") => {
      const blob = new Blob([content], { type: "application/octet-stream" });
      const url = URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.href = url;
      a.download = filename;
      a.style.display = "none";
      document.body.appendChild(a);
      a.click();
      setTimeout(() => {
        document.body.removeChild(a);
        URL.revokeObjectURL(url);
      }, 30000);
      toast.success(successMsg);
    },
    [],
  );

  return { download };
}