add new endpoints

app/repos/cartsRepo/cartsRepo.go

@@ -11,7 +11,10 @@ type UICartsRepo interface {
 	CreateNewCart(user_id uint) (model.CustomerCart, error)
 	UserHasCart(user_id uint, cart_id uint) (uint, error)
 	UpdateCartName(user_id uint, cart_id uint, new_name string) error
+	RetrieveCartsInfo(user_id uint) ([]model.CustomerCart, error)
 	RetrieveCart(user_id uint, cart_id uint) (*model.CustomerCart, error)
+	CheckProductExists(product_id uint, product_attribute_id *uint) (uint, error)
+	AddProduct(user_id uint, cart_id uint, product_id uint, product_attribute_id *uint, amount uint) error
 }
 
 type CartsRepo struct{}
@@ -38,7 +41,7 @@ func (repo *CartsRepo) CreateNewCart(user_id uint) (model.CustomerCart, error) {
 	name = constdata.DEFAULT_NEW_CART_NAME
 
 	cart := model.CustomerCart{
-		UserID: uint64(user_id),
+		UserID: user_id,
 		Name:   &name,
 	}
 	err := db.DB.Create(&cart).Error
@@ -69,14 +72,62 @@ func (repo *CartsRepo) UpdateCartName(user_id uint, cart_id uint, new_name strin
 	return err
 }
 
+func (repo *CartsRepo) RetrieveCartsInfo(user_id uint) ([]model.CustomerCart, error) {
+	var carts []model.CustomerCart
+
+	err := db.DB.
+		Table("b2b_customer_carts").
+		Where("user_id = ?", user_id).
+		Scan(&carts).
+		Error
+
+	return carts, err
+}
+
 func (repo *CartsRepo) RetrieveCart(user_id uint, cart_id uint) (*model.CustomerCart, error) {
 	var cart model.CustomerCart
 
 	err := db.DB.
-		Preload("b2b_carts_products").
+		Preload("Products").
 		Where("user_id = ? AND cart_id = ?", user_id, cart_id).
 		First(&cart).
 		Error
 
 	return &cart, err
 }
+
+func (repo *CartsRepo) CheckProductExists(product_id uint, product_attribute_id *uint) (uint, error) {
+	var amt uint
+
+	if product_attribute_id == nil {
+		err := db.DB.
+			Table("ps_product_shop").
+			Select("COUNT(*) AS amt").
+			Where("id_product = ?", product_id).
+			Scan(&amt).
+			Error
+		return amt, err
+
+	} else {
+		err := db.DB.
+			Table("ps_product_shop AS ps").
+			Joins("INNER JOIN ps_product_attribute_shop AS pas ON pas.id_product = ps.id_product").
+			Select("COUNT(*) AS amt").
+			Where("ps.id_product = ? AND pas.id_product_attribute = ?", product_id, *product_attribute_id).
+			Scan(&amt).
+			Error
+		return amt, err
+	}
+}
+
+func (repo *CartsRepo) AddProduct(user_id uint, cart_id uint, product_id uint, product_attribute_id *uint, amount uint) error {
+	product := model.CartProduct{
+		CartID:             cart_id,
+		ProductID:          product_id,
+		ProductAttributeID: product_attribute_id,
+		Amount:             amount,
+	}
+	err := db.DB.Create(&product).Error
+
+	return err
+}