import fs from "node:fs/promises";
import { FileBlob, SpreadsheetFile } from "@oai/artifact-tool";

const sourcePath = "C:/Users/milu/OneDrive - Exxeta/Dokumente/Assessor Zeiterfassung/ASSESSOR_Zeiterfassung_Sep2026_Jul2027_Form_wie_vorher.xlsx";
const outputPath = "C:/Users/milu/OneDrive - Exxeta/Dokumente/VS CODE/ASSESSOR-2-5/outputs/01a089e9-f688-7f21-87c9-db223e98841f/ASSESSOR_Zeiterfassung_Aug2026_Jul2027_aktualisiert.xlsx";
const outputDir = "C:/Users/milu/OneDrive - Exxeta/Dokumente/VS CODE/ASSESSOR-2-5/outputs/01a089e9-f688-7f21-87c9-db223e98841f";

const source = await SpreadsheetFile.importXlsx(await FileBlob.load(sourcePath));
const result = await SpreadsheetFile.importXlsx(await FileBlob.load(outputPath));

const unchanged = [];
for (const sheet of source.worksheets.items) {
  if (sheet.name === "September 2026") continue;
  const sourceUsed = sheet.getUsedRange();
  const resultSheet = result.worksheets.getItem(sheet.name);
  const resultUsed = resultSheet.getUsedRange();
  unchanged.push({
    sheet: sheet.name,
    address: sourceUsed?.address ?? null,
    sameAddress: sourceUsed?.address === resultUsed?.address,
    sameValues: JSON.stringify(sourceUsed?.values ?? []) === JSON.stringify(resultUsed?.values ?? []),
    sameFormulas: JSON.stringify(sourceUsed?.formulas ?? []) === JSON.stringify(resultUsed?.formulas ?? []),
  });
}
console.log(JSON.stringify({ unchanged }, null, 2));

const summary = await result.inspect({
  kind: "sheet,table,formula",
  maxChars: 14000,
  tableMaxRows: 5,
  tableMaxCols: 40,
  options: { maxResults: 100 },
});
console.log(summary.ndjson);

const errors = await result.inspect({
  kind: "match",
  searchTerm: "#REF!|#DIV/0!|#VALUE!|#NAME\\?|#N/A|#NUM!|#NULL!|#SPILL!|#CALC!",
  options: { useRegex: true, maxResults: 300 },
  summary: "saved-file formula error scan",
});
console.log(errors.ndjson);

for (const sheetName of ["August 2026", "September 2026"]) {
  const preview = await result.render({ sheetName, autoCrop: "all", scale: 1, format: "png" });
  await fs.writeFile(`${outputDir}/saved_${sheetName.replace(/[^a-z0-9_-]+/gi, "_")}.png`, new Uint8Array(await preview.arrayBuffer()));
}