Add product composition export

src/dataService.ts

@@ -551,6 +551,30 @@ export const fetchProductComposition = async (productId: string): Promise<Produc
     }
 };
 
+export const exportProductCompositions = async (): Promise<number> => {
+    const response = await authFetch('/analytics/product-compositions');
+    const data = await response.json().catch(() => null) as { compositions?: ProductComposition[]; error?: string } | null;
+    if (!response.ok) {
+        throw new Error(data?.error || 'Não foi possível exportar as composições.');
+    }
+
+    const compositions = data?.compositions || [];
+    const blob = new Blob([JSON.stringify({
+        exportedAt: new Date().toISOString(),
+        compositions
+    }, null, 2)], { type: 'application/json;charset=utf-8' });
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement('a');
+    link.href = url;
+    link.download = `composicoes_produtos_${new Date().toISOString().slice(0, 10)}.json`;
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+    URL.revokeObjectURL(url);
+
+    return compositions.length;
+};
+
 const appendClientMetadataFilterParams = (params: URLSearchParams, filters?: Partial<ClientMetadataFilters>) => {
     if (!filters) return;
     if (filters.marketplace) params.set('marketplace', filters.marketplace);