fix: resolve UTC date matching and implement per-product ASIN breakdown table for Line experiments

test-calc.js

@@ -0,0 +1,69 @@
+import fs from 'fs';
+import path from 'path';
+
+// read dummy data or mock 
+const mockSalesData = [
+    {
+        asin: 'B08F2J8S1Y',
+        line: 'LEGENDS',
+        year: 2026,
+        week: 1,
+        unitsTotal: 10,
+        salesTotal: 100,
+    },
+    {
+        asin: 'B08F2J8S1Y',
+        line: 'LEGENDS',
+        year: 2026,
+        week: 2,
+        unitsTotal: 15,
+        salesTotal: 150,
+    }
+];
+
+const experimentAsins = ['LINE:LEGENDS'];
+
+const lines = new Set();
+const explicitAsins = new Set();
+experimentAsins.forEach(a => {
+    const val = (a || '').trim().toUpperCase();
+    if (val.startsWith('LINE:')) {
+        lines.add(val.substring(5).trim());
+    } else if (val) {
+        explicitAsins.add(val);
+    }
+});
+
+const asinSet = new Set(explicitAsins);
+if (lines.size > 0 && mockSalesData) {
+    mockSalesData.forEach(r => {
+        const line = (r.line || '').trim().toUpperCase();
+        if (line && lines.has(line)) {
+            if (r.asin) asinSet.add(r.asin.toUpperCase());
+        }
+    });
+}
+
+console.log('Resolved ASINs:', Array.from(asinSet));
+
+// Date test
+const startDateStr = '2026-01-01';
+const endDateStr = '2026-01-14';
+
+const startDate = new Date(startDateStr);
+const endDate = new Date(endDateStr);
+
+console.log('Start Date UTC:', startDate.toISOString(), 'Local:', startDate.toString());
+console.log('End Date UTC:', endDate.toISOString(), 'Local:', endDate.toString());
+
+const recordDate1 = new Date(2026, 0, 1); // week 1
+const recordDate2 = new Date(2026, 0, 8); // week 2
+const recordDate3 = new Date(2026, 0, 15); // week 3
+
+console.log('Week 1 Record Date Local:', recordDate1.toString());
+console.log('Week 1 included in experiment?', recordDate1 >= startDate && recordDate1 <= endDate);
+console.log('Week 2 Record Date Local:', recordDate2.toString());
+console.log('Week 2 included in experiment?', recordDate2 >= startDate && recordDate2 <= endDate);
+console.log('Week 3 Record Date Local:', recordDate3.toString());
+console.log('Week 3 included in experiment?', recordDate3 >= startDate && recordDate3 <= endDate);
+