import fs from 'node:fs';
import ExcelJS from 'exceljs';

const out = 'C:/Users/HP/AppData/Local/Temp/claude/c--Users-HP-Desktop-Dev-Agentic-AI/8b30e040-7edd-46bd-97f0-c9d03d3965cf/scratchpad';

// ── PDF: header, page count, embedded images ──
const pdf = fs.readFileSync(`${out}/report.pdf`);
const pdfStr = pdf.toString('latin1');
const pages = (pdfStr.match(/\/Type\s*\/Page[^s]/g) || []).length;
const images = (pdfStr.match(/\/Subtype\s*\/Image/g) || []).length;
console.log(`PDF   header=${pdf.subarray(0, 5).toString()} pages=${pages} images=${images} hasEOF=${pdfStr.trimEnd().endsWith('%%EOF')}`);

// ── OOXML: valid zip + expected parts ──
const zipParts = (buf) => {
  const s = buf.toString('latin1');
  const names = new Set();
  const rx = /PK\x03\x04[\s\S]{22}/g;
  let m;
  while ((m = rx.exec(s))) {
    const nameLen = buf.readUInt16LE(m.index + 26);
    const extraLen = buf.readUInt16LE(m.index + 28);
    names.add(buf.subarray(m.index + 30, m.index + 30 + nameLen).toString('utf8'));
    rx.lastIndex = m.index + 30 + nameLen + extraLen;
  }
  return [...names];
};

for (const [name, must] of [
  ['docx', 'word/document.xml'],
  ['pptx', 'ppt/presentation.xml'],
  ['xlsx', 'xl/workbook.xml'],
]) {
  const buf = fs.readFileSync(`${out}/report.${name}`);
  const parts = zipParts(buf);
  const media = parts.filter((p) => /media\//.test(p));
  const slides = parts.filter((p) => /slides\/slide\d+\.xml$/.test(p));
  const sheets = parts.filter((p) => /worksheets\/sheet\d+\.xml$/.test(p));
  console.log(
    `${name.toUpperCase().padEnd(5)} zip=${buf.subarray(0, 2).toString() === 'PK'} parts=${parts.length} ` +
    `core=${parts.includes(must)} media=${media.length}` +
    (slides.length ? ` slides=${slides.length}` : '') +
    (sheets.length ? ` sheets=${sheets.length}` : ''),
  );
}

// ── XLSX: read it back and confirm the data survived ──
const wb = new ExcelJS.Workbook();
await wb.xlsx.readFile(`${out}/report.xlsx`);
console.log('XLSX  sheets:', wb.worksheets.map((w) => `${w.name}(${w.rowCount}r)`).join(', '));
const data = wb.getWorksheet('Top batches');
if (data) {
  console.log('XLSX  header:', data.getRow(1).values.slice(1).join(' | '));
  console.log('XLSX  row2  :', data.getRow(2).values.slice(1).join(' | '));
}
process.exit(0);