init

internal/entities/order_item.go

@@ -0,0 +1,89 @@
+package entities
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type Modifiers []map[string]interface{}
+
+func (m Modifiers) Value() (driver.Value, error) {
+	return json.Marshal(m)
+}
+
+func (m *Modifiers) Scan(value interface{}) error {
+	if value == nil {
+		*m = make(Modifiers, 0)
+		return nil
+	}
+
+	bytes, ok := value.([]byte)
+	if !ok {
+		return errors.New("type assertion to []byte failed")
+	}
+
+	return json.Unmarshal(bytes, m)
+}
+
+type OrderItemStatus string
+
+const (
+	OrderItemStatusPending   OrderItemStatus = "pending"
+	OrderItemStatusPreparing OrderItemStatus = "preparing"
+	OrderItemStatusReady     OrderItemStatus = "ready"
+	OrderItemStatusServed    OrderItemStatus = "served"
+	OrderItemStatusCancelled OrderItemStatus = "cancelled"
+)
+
+type OrderItem struct {
+	ID                  uuid.UUID       `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrderID             uuid.UUID       `gorm:"type:uuid;not null;index" json:"order_id" validate:"required"`
+	ProductID           uuid.UUID       `gorm:"type:uuid;not null;index" json:"product_id" validate:"required"`
+	ProductVariantID    *uuid.UUID      `gorm:"type:uuid;index" json:"product_variant_id"`
+	Quantity            int             `gorm:"not null" json:"quantity" validate:"required,min=1"`
+	UnitPrice           float64         `gorm:"type:decimal(10,2);not null" json:"unit_price" validate:"required,min=0"`
+	TotalPrice          float64         `gorm:"type:decimal(10,2);not null" json:"total_price" validate:"required,min=0"`
+	UnitCost            float64         `gorm:"type:decimal(10,2);default:0.00" json:"unit_cost"`
+	TotalCost           float64         `gorm:"type:decimal(10,2);default:0.00" json:"total_cost"`
+	RefundAmount        float64         `gorm:"type:decimal(10,2);default:0.00" json:"refund_amount"`
+	RefundQuantity      int             `gorm:"default:0" json:"refund_quantity"`
+	IsPartiallyRefunded bool            `gorm:"default:false" json:"is_partially_refunded"`
+	IsFullyRefunded     bool            `gorm:"default:false" json:"is_fully_refunded"`
+	RefundReason        *string         `gorm:"size:255" json:"refund_reason,omitempty"`
+	RefundedAt          *time.Time      `gorm:"" json:"refunded_at,omitempty"`
+	RefundedBy          *uuid.UUID      `gorm:"type:uuid" json:"refunded_by,omitempty"`
+	Modifiers           Modifiers       `gorm:"type:jsonb;default:'[]'" json:"modifiers"`
+	Notes               *string         `gorm:"size:500" json:"notes,omitempty"`
+	Metadata            Metadata        `gorm:"type:jsonb;default:'{}'" json:"metadata"`
+	Status              OrderItemStatus `gorm:"default:'pending';size:50" json:"status"`
+	CreatedAt           time.Time       `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt           time.Time       `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Order          Order           `gorm:"foreignKey:OrderID" json:"order,omitempty"`
+	Product        Product         `gorm:"foreignKey:ProductID" json:"product,omitempty"`
+	ProductVariant *ProductVariant `gorm:"foreignKey:ProductVariantID" json:"product_variant,omitempty"`
+}
+
+func (oi *OrderItem) BeforeCreate(tx *gorm.DB) error {
+	if oi.ID == uuid.Nil {
+		oi.ID = uuid.New()
+	}
+	return nil
+}
+
+func (OrderItem) TableName() string {
+	return "order_items"
+}
+
+func (oi *OrderItem) CalculateTotalPrice() {
+	oi.TotalPrice = float64(oi.Quantity) * oi.UnitPrice
+}
+
+func (oi *OrderItem) CanBeModified() bool {
+	return oi.Status == OrderItemStatusPending
+}