9.16/1

backend/src/main/java/com/example/demo/dashboard/DashboardController.java

@@ -0,0 +1,27 @@
+package com.example.demo.dashboard;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/dashboard")
+public class DashboardController {
+
+    private final DashboardService dashboardService;
+
+    public DashboardController(DashboardService dashboardService) {
+        this.dashboardService = dashboardService;
+    }
+
+    @GetMapping("/overview")
+    public ResponseEntity<DashboardOverviewResponse> overview(@RequestHeader(name = "X-Shop-Id", required = false) Long shopId) {
+        long sid = (shopId == null ? 1L : shopId);
+        return ResponseEntity.ok(dashboardService.getOverview(sid));
+    }
+}
+
+
+

backend/src/main/java/com/example/demo/dashboard/DashboardOverviewResponse.java

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+package com.example.demo.dashboard;
+
+import java.math.BigDecimal;
+
+public class DashboardOverviewResponse {
+    private BigDecimal todaySalesAmount;
+    private BigDecimal monthGrossProfit;
+    private BigDecimal stockTotalQuantity;
+
+    public DashboardOverviewResponse(BigDecimal todaySalesAmount, BigDecimal monthGrossProfit, BigDecimal stockTotalQuantity) {
+        this.todaySalesAmount = todaySalesAmount;
+        this.monthGrossProfit = monthGrossProfit;
+        this.stockTotalQuantity = stockTotalQuantity;
+    }
+
+    public BigDecimal getTodaySalesAmount() {
+        return todaySalesAmount;
+    }
+
+    public BigDecimal getMonthGrossProfit() {
+        return monthGrossProfit;
+    }
+
+    public BigDecimal getStockTotalQuantity() {
+        return stockTotalQuantity;
+    }
+}
+
+
+

backend/src/main/java/com/example/demo/dashboard/DashboardRepository.java

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+package com.example.demo.dashboard;
+
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+import org.springframework.stereotype.Repository;
+
+import java.math.BigDecimal;
+
+@Repository
+public class DashboardRepository {
+
+    @PersistenceContext
+    private EntityManager entityManager;
+
+    public BigDecimal sumTodaySalesOrders(Long shopId) {
+        Object result = entityManager.createNativeQuery(
+                "SELECT COALESCE(SUM(amount), 0) FROM sales_orders " +
+                "WHERE shop_id = :shopId AND status = 'approved' AND DATE(order_time) = CURRENT_DATE()"
+        ).setParameter("shopId", shopId).getSingleResult();
+        return toBigDecimal(result);
+    }
+
+    public BigDecimal sumMonthGrossProfitApprox(Long shopId) {
+        Object result = entityManager.createNativeQuery(
+                "SELECT COALESCE(SUM(soi.amount - soi.quantity * COALESCE(pp.purchase_price, 0)), 0) AS gp " +
+                "FROM sales_orders so " +
+                "JOIN sales_order_items soi ON soi.order_id = so.id " +
+                "LEFT JOIN product_prices pp ON pp.product_id = soi.product_id AND pp.shop_id = so.shop_id " +
+                "WHERE so.shop_id = :shopId AND so.status = 'approved' " +
+                "AND so.order_time >= DATE_FORMAT(CURRENT_DATE(), '%Y-%m-01') " +
+                "AND so.order_time < DATE_ADD(DATE_FORMAT(CURRENT_DATE(), '%Y-%m-01'), INTERVAL 1 MONTH)"
+        ).setParameter("shopId", shopId).getSingleResult();
+        return toBigDecimal(result);
+    }
+
+    public BigDecimal sumTotalInventoryQty(Long shopId) {
+        Object result = entityManager.createNativeQuery(
+                "SELECT COALESCE(SUM(quantity), 0) FROM inventories WHERE shop_id = :shopId"
+        ).setParameter("shopId", shopId).getSingleResult();
+        return toBigDecimal(result);
+    }
+
+    private BigDecimal toBigDecimal(Object value) {
+        if (value == null) return BigDecimal.ZERO;
+        if (value instanceof BigDecimal) return (BigDecimal) value;
+        if (value instanceof Number) return BigDecimal.valueOf(((Number) value).doubleValue());
+        try {
+            return new BigDecimal(value.toString());
+        } catch (Exception e) {
+            return BigDecimal.ZERO;
+        }
+    }
+}
+
+
+

backend/src/main/java/com/example/demo/dashboard/DashboardService.java

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+package com.example.demo.dashboard;
+
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+
+@Service
+public class DashboardService {
+    private final DashboardRepository dashboardRepository;
+
+    public DashboardService(DashboardRepository dashboardRepository) {
+        this.dashboardRepository = dashboardRepository;
+    }
+
+    public DashboardOverviewResponse getOverview(long shopId) {
+        BigDecimal todaySales = dashboardRepository.sumTodaySalesOrders(shopId);
+        BigDecimal monthGrossProfit = dashboardRepository.sumMonthGrossProfitApprox(shopId);
+        BigDecimal stockTotalQty = dashboardRepository.sumTotalInventoryQty(shopId);
+        return new DashboardOverviewResponse(todaySales, monthGrossProfit, stockTotalQty);
+    }
+}
+
+
+