feat[BE-127]: create available qty API and inisiate sales order and delivery order

internal/entities/marketing_delivery_product.go

@@ -0,0 +1,24 @@
+package entities
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type MarketingDeliveryProduct struct {
+	Id                 uint           `gorm:"primaryKey;autoIncrement"`
+	MarketingProductId uint           `gorm:"uniqueIndex;not null"`
+	Qty                float64        `gorm:"type:numeric(15,3);not null"`
+	UnitPrice          float64        `gorm:"type:numeric(15,3);not null"`
+	TotalWeight        float64        `gorm:"type:numeric(15,3);not null"`
+	AvgWeight          float64        `gorm:"type:numeric(15,3);not null"`
+	TotalPrice         float64        `gorm:"type:numeric(15,3);not null"`
+	DeliveryDate       *time.Time     `gorm:"type:timestamptz"`
+	VehicleNumber      string         `gorm:"type:varchar(50)"`
+	CreatedAt          time.Time      `gorm:"autoCreateTime"`
+	UpdatedAt          time.Time      `gorm:"autoUpdateTime"`
+	DeletedAt          gorm.DeletedAt `gorm:"index" json:"-"`
+
+	MarketingProduct MarketingProduct `gorm:"foreignKey:MarketingProductId;references:Id"`
+}