fix: logic to show BSR improvements (rank drops) in green

debug_merge.ts

@@ -0,0 +1,42 @@
+import XLSX from 'xlsx';
+import { readFileSync } from 'fs';
+import { processAdsExcel, mergeSalesAndAdsData } from './services/dataProcessor';
+
+async function run() {
+    // Load ads directly
+    const buf = readFileSync('/tmp/Ads-Weekly.xlsx').buffer;
+    const adsData = await processAdsExcel(buf);
+
+    console.log('Total ads records:', adsData.length);
+
+    // Find INKEE ads
+    const inkeeAds = adsData.filter(a => a.asin.includes('B0CQ'));
+    console.log('INKEE ads rows:', inkeeAds.length);
+
+    if (inkeeAds.length > 0) {
+        console.log('INKEE ad years:', [...new Set(inkeeAds.map(a => a.year))]);
+        console.log('INKEE ad weeks:', [...new Set(inkeeAds.map(a => a.week))].sort((a, b) => a - b));
+        console.log('INKEE cost sample:', inkeeAds.slice(0, 3).map(a => ({ year: a.year, week: a.week, asin: a.asin, cost: a.cost, country: a.country })));
+
+        // What does "DE" country map to?
+        const deAds = inkeeAds.filter(a => a.country.includes('DE'));
+        console.log('\nINKEE DE ads count:', deAds.length);
+        if (deAds.length > 0) {
+            console.log('First DE ad:', deAds[0]);
+        }
+    }
+
+    // Now simulate merge with a mock sales record
+    const mockSales = [
+        {
+            id: 'test', year: 2025, week: 1, asin: 'B0CQTLZRCV', customer: 'Amazon DE',
+            sellOut: 500, units: 5, month: 'Jan', sku: 'TEST', title: 'INKEE', line: 'Inkee', articleName: 'INKEE'
+        }
+    ] as any[];
+
+    const merged = mergeSalesAndAdsData(mockSales, adsData);
+    const inkeeRow = merged.find(m => m.asin === 'B0CQTLZRCV' && m.year === 2025);
+    console.log('\nMerged INKEE row:', inkeeRow ? { cost: inkeeRow.cost, salesAds: inkeeRow.salesAds, clicks: inkeeRow.clicks } : 'NOT FOUND');
+}
+
+run().catch(console.error);