feat: add meValue to product entity and request, update mapper and service to support new energy calculation logic

src/main.ts

@@ -31,6 +31,12 @@ async function bootstrap() {
   app.useGlobalPipes(new GlobalValidationPipe());
   app.useGlobalFilters(new GlobalExceptionFilter());
 
+  // Enable CORS for frontend applications
+  app.enableCors({
+    origin: ['http://localhost:5173', 'http://localhost:5174', 'http://localhost:5175'],
+    credentials: true,
+  });
+
   await app.listen(process.env.APP_PORT || 3000);
 }
 bootstrap();

src/pet-feeder/dto/create-product.request.ts

@@ -60,4 +60,11 @@ export class CreateProductRequest {
   })
   @ApiProperty()
   moisture: number;
+
+  @IsOptional()
+  @ApiProperty({
+    description: 'ME值(kcal/g)，直接配置的代谢能，可选。如果提供则优先使用，否则通过营养成分计算',
+    required: false,
+  })
+  meValue?: number;
 }

src/pet-feeder/entity/product.entity.ts

@@ -56,6 +56,15 @@ export class Product extends BaseEntity {
   })
   moisture: number;
 
+  // ME值(kcal/g)，直接配置的代谢能，可选字段
+  // 如果配置了此值，优先使用；否则通过营养成分计算
+  @Column({
+    type: 'double',
+    nullable: true,
+    comment: 'ME值(kcal/g)，直接配置的代谢能',
+  })
+  meValue: number | null;
+
   @OneToMany(
     () => FeedingPlanProduct,
     (feedingPlanProduct) => feedingPlanProduct.feedingPlan,

src/pet-feeder/mapper/product.mapper.ts

@@ -60,14 +60,24 @@ export class ProductMapper extends BaseMapper<Product, ProductVo> {
   }
 
   toVo(entity: Product): ProductVo {
-    // 计算ME值(每克产品的能量)
-    const mePerGram = this.calculateME(
-      entity.protein,
-      entity.fat,
-      entity.fiber,
-      entity.ash,
-      entity.moisture,
-    );
+    // ME值计算逻辑：
+    // 1. 如果配置了meValue，优先使用配置值
+    // 2. 否则通过营养成分计算
+    let mePerGram: number;
+
+    if (entity.meValue !== null && entity.meValue !== undefined) {
+      // 使用直接配置的ME值(kcal/g)
+      mePerGram = entity.meValue;
+    } else {
+      // 通过营养成分计算ME值
+      mePerGram = this.calculateME(
+        entity.protein,
+        entity.fat,
+        entity.fiber,
+        entity.ash,
+        entity.moisture,
+      );
+    }
 
     // 计算整包产品的总能量
     const totalCalories = mePerGram * entity.totalWeight;
@@ -84,6 +94,7 @@ export class ProductMapper extends BaseMapper<Product, ProductVo> {
       ash: entity.ash,
       moisture: entity.moisture,
       totalWeight: entity.totalWeight,
+      meValue: entity.meValue,
       totalCalories: Number(totalCalories.toFixed(2)), // 保留2位小数
     };
   }

src/pet-feeder/service/product.service.ts

@@ -37,6 +37,7 @@ export class ProductService {
     product.ash = updateProductRequest.ash;
     product.moisture = updateProductRequest.moisture;
     product.totalWeight = updateProductRequest.totalWeight;
+    product.meValue = updateProductRequest.meValue ?? null;
     return this.productRepository.save(product);
   }
 

src/pet-feeder/vo/product.vo.ts

@@ -38,7 +38,13 @@ export class ProductVo extends BaseVo {
   moisture: number;
 
   @ApiProperty({
-    description: '产品总能量(kcal)，基于ME算法计算',
+    description: 'ME值(kcal/g)，直接配置的代谢能，可选',
+    required: false,
+  })
+  meValue: number | null;
+
+  @ApiProperty({
+    description: '产品总能量(kcal)，基于ME算法计算或直接配置',
   })
   totalCalories: number;
 }