Dockerfile

service/stock/unit_conversion_service.go

@@ -0,0 +1,103 @@
+package service
+
+// unit_conversion_service.go
+// 单位换算服务层
+//
+// 职责：
+// 1. GetConversionFactor - 获取单位换算系数
+//    查询UnitConversion表，返回fromUnit→toUnit的换算系数
+//
+// 2. ConvertWithCeil - 向上取整换算（用于容量计算）
+//    公式：ceil(fromQty / factor)
+//    示例：50瓶 ÷ 20（瓶/箱）= 2.5 → ceil = 3箱
+//
+// 3. ConvertExact - 精确换算（用于出入库数量计算）
+//    公式：fromQty / factor
+//    示例：50瓶 ÷ 20（瓶/箱）= 2.5箱
+//
+// 核心逻辑：
+// - 从UnitConversion表查询换算系数
+// - 向上取整确保不满一个单位也占用空间
+// - 只能在同一CapacityUnitType（枚举类型）内换算
+
+import (
+	dao "assets/dao/stock"
+	dto "assets/model/dto/stock"
+	entity "assets/model/entity/stock"
+	"context"
+
+	"gitea.com/red-future/common/utils"
+	"go.mongodb.org/mongo-driver/v2/bson"
+)
+
+var UnitConversion = new(unitConversion)
+
+type unitConversion struct{}
+
+// Create 创建单位换算规则
+func (s *unitConversion) Create(ctx context.Context, req *dto.CreateUnitConversionReq) (res *dto.CreateUnitConversionRes, err error) {
+	var conversion *entity.UnitConversion
+	if err = utils.Struct(req, &conversion); err != nil {
+		return
+	}
+
+	ids, err := dao.UnitConversion.Insert(ctx, conversion)
+	if err != nil {
+		return
+	}
+
+	id := ids[0].(bson.ObjectID)
+	res = &dto.CreateUnitConversionRes{
+		Id: &id,
+	}
+	return
+}
+
+// Update 更新单位换算规则
+func (s *unitConversion) Update(ctx context.Context, req *dto.UpdateUnitConversionReq) (err error) {
+	update := bson.M{}
+
+	if req.ConversionCode != "" {
+		update["conversionCode"] = req.ConversionCode
+	}
+	if req.ConversionName != "" {
+		update["conversionName"] = req.ConversionName
+	}
+	if req.UnitType != "" {
+		update["unitType"] = req.UnitType
+	}
+	if req.FromUnit != "" {
+		update["fromUnit"] = req.FromUnit
+	}
+	if req.ToUnit != "" {
+		update["toUnit"] = req.ToUnit
+	}
+	if req.ConversionFactor > 0 {
+		update["conversionFactor"] = req.ConversionFactor
+	}
+	if req.Remark != "" {
+		update["remark"] = req.Remark
+	}
+
+	err = dao.UnitConversion.Update(ctx, req.Id, update)
+	return
+}
+
+// Delete 删除单位换算规则
+func (s *unitConversion) Delete(ctx context.Context, req *dto.DeleteUnitConversionReq) (err error) {
+	err = dao.UnitConversion.DeleteFake(ctx, req.Id)
+	return
+}
+
+// List 查询单位换算列表
+func (s *unitConversion) List(ctx context.Context, req *dto.ListUnitConversionReq) (res *dto.ListUnitConversionRes, err error) {
+	list, err := dao.UnitConversion.List(ctx, req.UnitType, req.FromUnit, req.ToUnit)
+	if err != nil {
+		return
+	}
+
+	res = &dto.ListUnitConversionRes{
+		List: list,
+	}
+	return
+}