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