feat: create specific price system and adapt product queries

app/repos/productsRepo/productsRepo.go

@@ -2,7 +2,6 @@ package productsRepo
 
 import (
 	"encoding/json"
-	"fmt"
 
 	"git.ma-al.com/goc_daniel/b2b/app/config"
 	"git.ma-al.com/goc_daniel/b2b/app/db"
@@ -16,9 +15,12 @@ import (
 )
 
 type UIProductsRepo interface {
-	GetJSON(p_id_product, p_id_shop, p_id_lang, p_id_customer, b2b_id_country, p_quantity int) (*json.RawMessage, error)
+	// GetJSON(p_id_product, p_id_shop, p_id_lang, p_id_customer, b2b_id_country, p_quantity int) (*json.RawMessage, error)
 	Find(id_lang uint, p find.Paging, filt *filters.FiltersList) (*find.Found[model.ProductInList], error)
 	GetProductVariants(langID uint, productID uint, shopID uint, customerID uint, countryID uint, quantity uint) ([]view.ProductAttribute, error)
+	GetBase(p_id_product, p_id_shop, p_id_lang uint) (view.Product, error)
+	GetPrice(p_id_product uint, productAttributeID *uint, p_id_shop uint, p_id_customer uint, p_id_country uint, p_quantity uint) (view.Price, error)
+	GetVariants(p_id_product, p_id_shop, p_id_lang, p_id_customer, p_id_country, p_quantity uint) ([]view.ProductAttribute, error)
 }
 
 type ProductsRepo struct{}
@@ -27,25 +29,75 @@ func New() UIProductsRepo {
 	return &ProductsRepo{}
 }
 
-func (repo *ProductsRepo) GetJSON(p_id_product, p_id_shop, p_id_lang, p_id_customer, b2b_id_country, p_quantity int) (*json.RawMessage, error) {
-	var productStr string // ← Scan as string first
+func (repo *ProductsRepo) GetBase(p_id_product, p_id_shop, p_id_lang uint) (view.Product, error) {
+	var result view.Product
 
-	err := db.DB.Raw(`CALL get_full_product(?,?,?,?,?,?)`,
-		p_id_product, p_id_shop, p_id_lang, p_id_customer, b2b_id_country, p_quantity).
-		Scan(&productStr).
-		Error
+	err := db.DB.Raw(`CALL get_product_base(?,?,?)`,
+		p_id_product, p_id_shop, p_id_lang).
+		Scan(&result).Error
+
+	return result, err
+}
+
+func (repo *ProductsRepo) GetPrice(
+	p_id_product uint, productAttributeID *uint, p_id_shop uint, p_id_customer uint, p_id_country uint, p_quantity uint,
+) (view.Price, error) {
+
+	type row struct {
+		Price json.RawMessage `gorm:"column:price"`
+	}
+
+	var r row
+	err := db.DB.Raw(`
+        SELECT fn_product_price(?,?,?,?,?,?) AS price`,
+		p_id_product, p_id_shop, p_id_customer, p_id_country, p_quantity, productAttributeID).
+		Scan(&r).Error
 
 	if err != nil {
-		return nil, err
+		return view.Price{}, err
 	}
 
-	// Optional: validate it's valid JSON
-	if !json.Valid([]byte(productStr)) {
-		return nil, fmt.Errorf("invalid json returned from stored procedure")
+	var temp struct {
+		Base         json.Number `json:"base"`
+		FinalTaxExcl json.Number `json:"final_tax_excl"`
+		FinalTaxIncl json.Number `json:"final_tax_incl"`
+		TaxRate      json.Number `json:"tax_rate"`
+		Priority     json.Number `json:"priority"`
 	}
 
-	raw := json.RawMessage(productStr)
-	return &raw, nil
+	if err := json.Unmarshal(r.Price, &temp); err != nil {
+		return view.Price{}, err
+	}
+
+	price := view.Price{
+		Base:         mustParseFloat(temp.Base),
+		FinalTaxExcl: mustParseFloat(temp.FinalTaxExcl),
+		FinalTaxIncl: mustParseFloat(temp.FinalTaxIncl),
+		TaxRate:      mustParseFloat(temp.TaxRate),
+		Priority:     mustParseInt(temp.Priority),
+	}
+
+	return price, nil
+}
+func mustParseFloat(n json.Number) float64 {
+	f, _ := n.Float64()
+	return f
+}
+
+func mustParseInt(n json.Number) int {
+	i, _ := n.Int64()
+	return int(i)
+}
+func (repo *ProductsRepo) GetVariants(p_id_product, p_id_shop, p_id_lang, p_id_customer, p_id_country, p_quantity uint) ([]view.ProductAttribute, error) {
+
+	var results []view.ProductAttribute
+
+	err := db.DB.Raw(`
+		CALL get_product_variants(?,?,?,?,?,?)`,
+		p_id_product, p_id_shop, p_id_lang, p_id_customer, p_id_country, p_quantity).
+		Scan(&results).Error
+
+	return results, err
 }
 
 func (repo *ProductsRepo) Find(langID uint, p find.Paging, filt *filters.FiltersList) (*find.Found[model.ProductInList], error) {