feat: restrict data to Amazon customers only (DE/FR/ES/IT/UK/SC)

services/dataProcessor.ts

@@ -151,6 +151,14 @@ const getColumnValue = (row: any, aliases: string[]): string => {
     }
     return '';
 };
+// Allowed Customers Whitelist
+const ALLOWED_CUSTOMERS = ['Amazon DE', 'Amazon FR', 'Amazon ES', 'Amazon IT', 'Amazon UK', 'Amazon SC'];
+
+const isAllowedCustomer = (customer: string): boolean => {
+    if (!customer) return false;
+    const normCustomer = customer.trim().toLowerCase();
+    return ALLOWED_CUSTOMERS.some(allowed => allowed.toLowerCase() === normCustomer);
+};
 
 // --- SALES / SELL OUT MAPPING ---
 
@@ -216,8 +224,8 @@ export const processCSV = (fileOrContent: File | string): Promise<SalesRecord[]>
                     const data: SalesRecord[] = results.data.map((row: any, index: number) => {
                         return mapRowToRecord(row, index);
                     })
-          // Relaxed filtering: Only exclude rows with absolutely no year info even after backfill
+                        // Filter: Valid Year AND Allowed Customer
-          .filter((r: SalesRecord) => r.year > 0);
+                        .filter((r: SalesRecord) => r.year > 0 && isAllowedCustomer(r.customer));
 
                     resolve(data);
                 } catch (err) {
@@ -240,8 +248,8 @@ export const processExcel = async (file: File): Promise<SalesRecord[]> => {
         const data: SalesRecord[] = jsonData.map((row: any, index: number) => {
             return mapRowToRecord(row, index);
         })
-        // Relaxed filtering
+            // Filter: Valid Year AND Allowed Customer
-        .filter((r: SalesRecord) => r.year > 0);
+            .filter((r: SalesRecord) => r.year > 0 && isAllowedCustomer(r.customer));
 
         return data;
     } catch (error) {