feat[BE]: Add GetClosingKeuanganByKandang endpoint and related service methods

internal/modules/closings/repositories/closingKeuangan.repository.go

@@ -17,6 +17,12 @@ type ClosingKeuanganRepository interface {
 	// All Product Usage
 	GetAllProductUsageByProjectFlockKandangID(ctx context.Context, projectFlockKandangID uint, flagFilters []string) ([]ProductUsageRow, error)
 
+	// Depletion per kandang
+	GetTotalDepletionByProjectFlockKandangID(ctx context.Context, projectFlockKandangID uint) (float64, error)
+
+	// Weight produced from uniformity per kandang
+	GetTotalWeightProducedFromUniformityByProjectFlockKandangID(ctx context.Context, projectFlockKandangID uint) (float64, error)
+
 	// DB returns the underlying GORM DB instance
 	DB() *gorm.DB
 }
@@ -310,6 +316,49 @@ func (r *ClosingKeuanganRepositoryImpl) GetAllProductUsageByProjectFlockKandangI
 	return results, nil
 }
 
+// GetTotalDepletionByProjectFlockKandangID gets total depletion for a specific kandang
+func (r *ClosingKeuanganRepositoryImpl) GetTotalDepletionByProjectFlockKandangID(ctx context.Context, projectFlockKandangID uint) (float64, error) {
+	var result float64
+	err := r.DB().WithContext(ctx).
+		Table("recording_depletions").
+		Select("COALESCE(SUM(recording_depletions.qty), 0)").
+		Joins("JOIN recordings ON recordings.id = recording_depletions.recording_id").
+		Joins("JOIN project_flock_kandangs ON project_flock_kandangs.id = recordings.project_flock_kandangs_id").
+		Where("project_flock_kandangs.id = ?", projectFlockKandangID).
+		Scan(&result).Error
+	return result, err
+}
+
+// GetTotalWeightProducedFromUniformityByProjectFlockKandangID calculates total weight produced from uniformity data for a specific kandang
+// Formula: (mean_up / 1.10) * chick_qty_of_weight / 1000
+func (r *ClosingKeuanganRepositoryImpl) GetTotalWeightProducedFromUniformityByProjectFlockKandangID(ctx context.Context, projectFlockKandangID uint) (float64, error) {
+	if projectFlockKandangID == 0 {
+		return 0, nil
+	}
+
+	var uniformity struct {
+		MeanUp           float64
+		ChickQtyOfWeight float64
+	}
+
+	err := r.DB().WithContext(ctx).
+		Table("project_flock_kandang_uniformity").
+		Select("mean_up, chick_qty_of_weight").
+		Where("project_flock_kandang_id = ?", projectFlockKandangID).
+		Order("id DESC").
+		Limit(1).
+		Scan(&uniformity).Error
+
+	if err != nil {
+		return 0, err
+	}
+
+	// Calculate weight: (mean_up / 1.10) * chick_qty_of_weight / 1000
+	totalWeight := (uniformity.MeanUp / 1.10) * uniformity.ChickQtyOfWeight / 1000
+
+	return totalWeight, nil
+}
+
 // containsIgnoreCase checks if a string contains a substring (case-insensitive)
 func containsIgnoreCase(str, substr string) bool {
 	return strings.Contains(strings.ToUpper(str), strings.ToUpper(substr))