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frontend/src/api/services/salesApi.ts

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+// frontend/dashboard/src/api/services/salesApi.ts
+/**
+ * Sales data API service
+ */
+
+import { ApiClient } from '../base/apiClient';
+import {
+  SalesRecord,
+  CreateSalesRequest,
+  ApiResponse,
+} from '../../types/api';
+
+export interface SalesQuery {
+  start_date?: string;
+  end_date?: string;
+  product_name?: string;
+  limit?: number;
+  offset?: number;
+}
+
+export class SalesApi {
+  constructor(private client: ApiClient) {}
+
+  async getSales(query: SalesQuery = {}): Promise<SalesRecord[]> {
+    return this.client.get<SalesRecord[]>('/data/sales', {
+      params: query,
+    });
+  }
+
+  async createSalesRecord(salesData: CreateSalesRequest): Promise<SalesRecord> {
+    return this.client.post<SalesRecord>('/data/sales', salesData);
+  }
+
+  async updateSalesRecord(id: string, updates: Partial<CreateSalesRequest>): Promise<SalesRecord> {
+    return this.client.patch<SalesRecord>(`/data/sales/${id}`, updates);
+  }
+
+  async deleteSalesRecord(id: string): Promise<void> {
+    return this.client.delete(`/data/sales/${id}`);
+  }
+
+  async bulkCreateSales(salesData: CreateSalesRequest[]): Promise<SalesRecord[]> {
+    return this.client.post<SalesRecord[]>('/data/sales/bulk', salesData);
+  }
+
+  async uploadSalesFile(
+    file: File,
+    onProgress?: (progress: number) => void
+  ): Promise<{ imported: number; errors: any[] }> {
+    return this.client.uploadFile('/data/sales/upload', file, onProgress);
+  }
+
+  async getSalesAnalytics(
+    startDate: string,
+    endDate: string
+  ): Promise<{
+    totalRevenue: number;
+    totalQuantity: number;
+    topProducts: Array<{ product_name: string; quantity: number; revenue: number }>;
+    dailyTrends: Array<{ date: string; quantity: number; revenue: number }>;
+  }> {
+    return this.client.get('/data/sales/analytics', {
+      params: { start_date: startDate, end_date: endDate },
+    });
+  }
+
+  async getProductList(): Promise<string[]> {
+    return this.client.get<string[]>('/data/sales/products');
+  }
+}