优化算法

internal/infra/models/recipe.go

@@ -13,6 +13,28 @@ func (Recipe) TableName() string {
 	return "recipes"
 }
 
+// CalculateTotalRawMaterialProportion 计算配方中所有原料的总比例
+func (r Recipe) CalculateTotalRawMaterialProportion() float32 {
+	var totalPercentage float32
+	for _, ingredient := range r.RecipeIngredients {
+		totalPercentage += ingredient.Percentage
+	}
+	return totalPercentage
+}
+
+// CalculateReferencePricePerKilogram 根据原料参考价计算配方每公斤的成本
+func (r Recipe) CalculateReferencePricePerKilogram() float32 {
+	var totalCost float32
+	for _, ingredient := range r.RecipeIngredients {
+		// 确保 RawMaterial 已经被加载
+		if ingredient.RawMaterial.ID == 0 {
+			return 0.0
+		}
+		totalCost += ingredient.RawMaterial.ReferencePrice * ingredient.Percentage
+	}
+	return totalCost
+}
+
 // RecipeIngredient 配方原料组成模型
 type RecipeIngredient struct {
 	Model