package entities

import "time"

// AdjustmentStock tracks FIFO allocation for stock adjustments
// - For INCREASE adjustments (Stockable): Tracks stock added to warehouse
// - For DECREASE adjustments (Usable): Tracks stock consumed from warehouse
type AdjustmentStock struct {
	Id                 uint   `gorm:"primaryKey"`
	StockLogId         uint   `gorm:"column:stock_log_id;not null;index"`
	ProductWarehouseId uint   `gorm:"column:product_warehouse_id;not null"`

	// === FIFO FIELDS FOR INCREASE ADJUSTMENT (Stockable) ===
	// Tracks stock added to warehouse via adjustment INCREASE
	TotalQty  float64 `gorm:"column:total_qty;default:0"`  // Total lot quantity available
	TotalUsed float64 `gorm:"column:total_used;default:0"` // Quantity already used from this lot

	// === FIFO FIELDS FOR DECREASE ADJUSTMENT (Usable) ===
	// Tracks stock consumed from warehouse via adjustment DECREASE
	UsageQty   float64 `gorm:"column:usage_qty;default:0"`   // Actual quantity consumed
	PendingQty float64 `gorm:"column:pending_qty;default:0"` // Pending quantity (waiting for stock)

	CreatedAt time.Time `gorm:"column:created_at;autoCreateTime"`
	UpdatedAt time.Time `gorm:"column:updated_at;autoUpdateTime"`

	// Relations
	StockLog         *StockLog         `gorm:"foreignKey:StockLogId;references:Id"`
	ProductWarehouse *ProductWarehouse `gorm:"foreignKey:ProductWarehouseId;references:Id"`
}