unfinish: fifo system

internal/entities/stock_allocation.go

@@ -0,0 +1,33 @@
+package entities
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+const (
+	StockAllocationStatusPending  = "PENDING"
+	StockAllocationStatusActive   = "ACTIVE"
+	StockAllocationStatusReleased = "RELEASED"
+)
+
+// StockAllocation links a usable record (consumption) with an incoming stock record.
+// The combination lets us trace FIFO deductions while keeping each module focused on its own fields.
+type StockAllocation struct {
+	Id                 uint           `gorm:"primaryKey"`
+	ProductWarehouseId uint           `gorm:"not null;index"`
+	StockableType      string         `gorm:"size:100;not null;index:stock_allocations_lookup,priority:1"`
+	StockableId        uint           `gorm:"not null;index:stock_allocations_lookup,priority:2"`
+	UsableType         string         `gorm:"size:100;not null;index:stock_allocations_usage_lookup,priority:1"`
+	UsableId           uint           `gorm:"not null;index:stock_allocations_usage_lookup,priority:2"`
+	Qty                float64        `gorm:"type:numeric(15,3);not null"`
+	Status             string         `gorm:"size:20;not null;default:ACTIVE"`
+	Note               *string        `gorm:"type:text"`
+	CreatedAt          time.Time      `gorm:"autoCreateTime"`
+	UpdatedAt          time.Time      `gorm:"autoUpdateTime"`
+	ReleasedAt         *time.Time     `gorm:"index"`
+	DeletedAt          gorm.DeletedAt `gorm:"index"`
+
+	ProductWarehouse *ProductWarehouse `gorm:"foreignKey:ProductWarehouseId;references:Id"`
+}