import * as XLSX from "xlsx";
import { getMediaTrackingResult } from "@/service/media-tracking/media-tracking";
import { saveAs } from "file-saver";

type ExportParams = {
  mediaTrackingId: number;
};

export async function exportMediaTrackingToExcel({
  mediaTrackingId,
}: ExportParams) {
  let page = 0;
  let totalPages = 1;
  const allData: any[] = [];

  while (page < totalPages) {
    const res = await getMediaTrackingResult({
      id: mediaTrackingId,
      page,
    });

    const data = res?.data?.data;
    if (!data) break;

    totalPages = data.totalPages;
    allData.push(...data.content);

    page++;
  }

  if (allData.length === 0) {
    throw new Error("Tidak ada data untuk di-export");
  }

  function extractDomain(url?: string): string {
    if (!url) return "-";
    try {
      return new URL(url).hostname;
    } catch {
      return "-";
    }
  }

  const rows = allData.map((item, index) => ({
    No: index + 1,
    "Media Online": extractDomain(item.link),
    "Judul Berita": item.title ?? "-",
    "Link Berita": item.link ?? "-",
    Validasi: item.validationStatus ?? "-",
    View: item.viewCount ?? 0,
    Share: item.shareCount ?? 0,
    Komentar: item.commentCount ?? 0,
    Tanggal: item.createdAt
      ? new Date(item.createdAt).toLocaleString("id-ID")
      : "-",
  }));

  const worksheet = XLSX.utils.json_to_sheet(rows);
  const workbook = XLSX.utils.book_new();

  XLSX.utils.book_append_sheet(workbook, worksheet, "Media Tracking");

  const excelBuffer = XLSX.write(workbook, {
    bookType: "xlsx",
    type: "array",
  });

  const blob = new Blob([excelBuffer], {
    type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  });

  saveAs(blob, `media-tracking-${mediaTrackingId}.xlsx`);
}