文件改名

internal/infra/models/pig_batch.go

@@ -0,0 +1,109 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+/*
+	和猪只、猪群本身相关的模型
+*/
+
+// PigBatchStatus 定义了猪批次所处的不同阶段或状态
+type PigBatchStatus string
+
+const (
+	BatchStatusWeaning   PigBatchStatus = "保育" // 从断奶到保育结束
+	BatchStatusGrowing   PigBatchStatus = "生长" // 生长育肥阶段
+	BatchStatusFinishing PigBatchStatus = "育肥" // 最后的育肥阶段
+	BatchStatusForSale   PigBatchStatus = "待售" // 达到出栏标准
+	BatchStatusSold      PigBatchStatus = "已出售"
+	BatchStatusArchived  PigBatchStatus = "已归档" // 批次结束（如全群淘汰等）
+)
+
+// PigBatchOriginType 定义了猪批次的来源
+type PigBatchOriginType string
+
+const (
+	OriginTypeSelfFarrowed PigBatchOriginType = "自繁"
+	OriginTypePurchased    PigBatchOriginType = "外购"
+)
+
+// PigBatch 是猪批次的核心模型，代表了一群被共同管理的猪
+type PigBatch struct {
+	gorm.Model
+	BatchNumber  string             `gorm:"size:50;not null;uniqueIndex;comment:批次编号,如 2024-W25-A01"`
+	OriginType   PigBatchOriginType `gorm:"size:20;not null;comment:批次来源 (自繁, 外购)"`
+	StartDate    time.Time          `gorm:"not null;comment:批次开始日期 (如转入日或购买日)"`
+	EndDate      time.Time          `gorm:"not null;comment:批次结束日期 (全部淘汰或售出)"`
+	InitialCount int                `gorm:"not null;comment:初始数量"`
+	Status       PigBatchStatus     `gorm:"size:20;not null;index;comment:批次状态"`
+}
+
+func (PigBatch) TableName() string {
+	return "pig_batches"
+}
+
+// IsActive 判断猪批次是否处于活跃状态
+func (pb PigBatch) IsActive() bool {
+	return pb.Status != BatchStatusSold && pb.Status != BatchStatusArchived
+}
+
+// LogChangeType 定义了猪批次数量变更的类型
+type LogChangeType string
+
+const (
+	ChangeTypeDeath       LogChangeType = "死亡"
+	ChangeTypeCull        LogChangeType = "淘汰"
+	ChangeTypeSale        LogChangeType = "销售"
+	ChangeTypeTransferIn  LogChangeType = "转入"
+	ChangeTypeTransferOut LogChangeType = "转出"
+	ChangeTypeTreatment   LogChangeType = "治疗" // 仅改变健康状态，不改变总数
+	ChangeTypeRecovering  LogChangeType = "康复" // 仅改变健康状态，不改变总数
+	ChangeTypeCorrection  LogChangeType = "盘点校正"
+)
+
+// PigBatchLog 记录了猪批次数量或状态的每一次变更
+type PigBatchLog struct {
+	gorm.Model
+	PigBatchID  uint          `gorm:"not null;index;comment:关联的猪批次ID"`
+	ChangeType  LogChangeType `gorm:"size:20;not null;comment:变更类型"`
+	ChangeCount int           `gorm:"not null;comment:数量变化,负数表示减少"`
+	Reason      string        `gorm:"size:255;comment:变更原因描述"`
+	BeforeCount int           `gorm:"not null;comment:变更前总数"`
+	AfterCount  int           `gorm:"not null;comment:变更后总数"`
+	OperatorID  uint          `gorm:"comment:操作员ID"`
+	HappenedAt  time.Time     `gorm:"primaryKey;comment:事件发生时间"`
+}
+
+func (PigBatchLog) TableName() string {
+	return "pig_batch_logs"
+}
+
+// WeighingBatch 记录了一次批次称重的信息
+type WeighingBatch struct {
+	gorm.Model
+	WeighingTime time.Time `gorm:"primaryKey;comment:称重时间"`
+	Description  string    `gorm:"size:255;comment:批次称重描述"`
+	PigBatchID   uint      `gorm:"not null;index;comment:关联的猪批次ID"`
+}
+
+func (WeighingBatch) TableName() string {
+	return "weighing_batches"
+}
+
+// WeighingRecord 记录了单次称重信息
+type WeighingRecord struct {
+	gorm.Model
+	Weight          float64   `gorm:"not null;comment:单只猪重量 (kg)"`
+	WeighingBatchID uint      `gorm:"not null;index;comment:关联的批次称重ID"`
+	PenID           uint      `gorm:"not null;index;comment:所在猪圈ID"`
+	OperatorID      uint      `gorm:"not null;comment:操作员ID"`
+	Remark          string    `gorm:"size:255;comment:备注"`
+	WeighingTime    time.Time `gorm:"primaryKey;comment:称重时间"`
+}
+
+func (WeighingRecord) TableName() string {
+	return "weighing_records"
+}