import XLSX from 'xlsx';
import { readFileSync } from 'fs';

const buf = readFileSync('/Users/christianvidalwolf/github/CrazeAnalytix/docs/plans/Ads_Performance_Export_2026-02-26.xlsx');
const wb = XLSX.read(buf, { type: 'buffer' });

console.log('Sheets:', wb.SheetNames);

for (const sheetName of wb.SheetNames) {
    const ws = wb.Sheets[sheetName];
    const rows: any[] = XLSX.utils.sheet_to_json(ws, { defval: '' });

    if (rows.length === 0) { console.log(`Sheet "${sheetName}" is empty`); continue; }

    console.log(`\n=== Sheet: "${sheetName}" (${rows.length} rows) ===`);
    const headers = Object.keys(rows[0]);
    console.log('Columns:', headers.join(' | '));
    console.log('First 3 rows:');
    rows.slice(0, 3).forEach(r => console.log(' ', JSON.stringify(r).slice(0, 300)));

    // Look for key columns
    const weekCol = headers.find(h => /week|woche|semana/i.test(h));
    const asinCol = headers.find(h => /asin/i.test(h));
    const countryCol = headers.find(h => /country|marketplace|portfolio|land|país/i.test(h));
    const costCol = headers.find(h => /^cost$|^spend$|^ausgaben$|^gasto$/i.test(h) || (/cost|spend/i.test(h) && !/acos|of sales/i.test(h)));
    const salesCol = headers.find(h => /sales|umsatz|ventas/i.test(h) && !/acos|cost of/i.test(h));

    console.log(`\nKey columns: week="${weekCol}" | asin="${asinCol}" | country="${countryCol}" | cost="${costCol}" | sales="${salesCol}"`);

    if (weekCol && costCol) {
        const weeks = [...new Set(rows.map(r => r[weekCol!]))];
        console.log('Unique weeks:', weeks.sort());
        const totalCost = rows.reduce((s, r) => s + (parseFloat(String(r[costCol!]).replace(',', '.')) || 0), 0);
        const totalSales = salesCol ? rows.reduce((s, r) => s + (parseFloat(String(r[salesCol!]).replace(',', '.')) || 0), 0) : 0;
        console.log(`Total cost: ${totalCost.toFixed(2)}, Total sales: ${totalSales.toFixed(2)}`);
    }
}