import { useState } from "react";
import { useRouter } from "next/router";
// services
import { UserService } from "services/user.service";
// ui
import { Button } from "@plane/ui";
// helpers
import { renderFormattedPayloadDate } from "helpers/date-time.helper";

const userService = new UserService();

export const DownloadActivityButton = () => {
  // states
  const [isDownloading, setIsDownloading] = useState(false);
  // router
  const router = useRouter();
  const { workspaceSlug, userId } = router.query;

  const handleDownload = async () => {
    const today = renderFormattedPayloadDate(new Date());

    if (!workspaceSlug || !userId || !today) return;

    setIsDownloading(true);

    const csv = await userService
      .downloadProfileActivity(workspaceSlug.toString(), userId.toString(), {
        date: today,
      })
      .finally(() => setIsDownloading(false));

    // create a Blob object
    const blob = new Blob([csv], { type: "text/csv" });

    // create URL for the Blob object
    const url = window.URL.createObjectURL(blob);

    // create a link element
    const a = document.createElement("a");
    a.href = url;
    a.download = `profile-activity-${Date.now()}.csv`;
    document.body.appendChild(a);

    // simulate click on the link element to trigger download
    a.click();

    // cleanup
    window.URL.revokeObjectURL(url);
    document.body.removeChild(a);
  };

  return (
    <Button onClick={handleDownload} loading={isDownloading}>
      {isDownloading ? "Downloading" : "Download today's activity"}
    </Button>
  );
};