feat: automatic ads data loading and attributed sales line in chart

services/dataProcessor.ts

@@ -352,9 +352,11 @@ export const processAdsCSV = (file: File): Promise<AdsRecord[]> => {
     });
 };
 
-export const processAdsExcel = async (file: File): Promise<AdsRecord[]> => {
+export const processAdsExcel = async (fileOrBuffer: File | ArrayBuffer): Promise<AdsRecord[]> => {
     try {
-        const arrayBuffer = await file.arrayBuffer();
+        const arrayBuffer = fileOrBuffer instanceof File
+            ? await fileOrBuffer.arrayBuffer()
+            : fileOrBuffer;
         const workbook = XLSX.read(arrayBuffer);
         const allData: AdsRecord[] = [];
 
@@ -542,6 +544,29 @@ export const mergeSalesAndAdsData = (salesData: SalesRecord[], adsData: AdsRecor
 
 // --- EXISTING HELPERS ---
 
+// Filter Ads Data by Country, Year, Week, and ASIN
+export const filterAdsData = (adsData: AdsRecord[], filters: FilterState): AdsRecord[] => {
+    return adsData.filter(ad => {
+        // Country/Customer match (ads use 'country', sales use 'customer')
+        const countryMatch = filters.customer.length === 0 ||
+            filters.customer.some(c => c.toUpperCase() === ad.country.toUpperCase());
+
+        // Year match
+        const yearMatch = filters.year.length === 0 ||
+            filters.year.includes(ad.year.toString());
+
+        // Week match (filters use "W1", "W2" format)
+        const weekStr = `W${ad.week}`;
+        const weekMatch = filters.week.length === 0 || filters.week.includes(weekStr);
+
+        // ASIN match
+        const asinMatch = filters.asin.length === 0 ||
+            filters.asin.some(a => a.toUpperCase() === ad.asin.toUpperCase());
+
+        return countryMatch && yearMatch && weekMatch && asinMatch;
+    });
+};
+
 export const filterData = (data: SalesRecord[], filters: FilterState): SalesRecord[] => {
     return data.filter(item => {
         // 1. Month Logic: Handle "Apr-23" matching "Apr" filter