feat: creat main products query

app/utils/responseErrors/responseErrors.go

@@ -56,6 +56,9 @@ var (
 	ErrMaxAmtOfCartsReached              = errors.New("maximal amount of carts reached")
 	ErrUserHasNoSuchCart                 = errors.New("user does not have cart with given id")
 	ErrProductOrItsVariationDoesNotExist = errors.New("product or its variation with given ids does not exist")
+
+	// Typed errors for data parsing
+	ErrJSONBody = errors.New("invalid JSON body")
 )
 
 // Error represents an error with HTTP status code
@@ -153,6 +156,9 @@ func GetErrorCode(c fiber.Ctx, err error) string {
 	case errors.Is(err, ErrProductOrItsVariationDoesNotExist):
 		return i18n.T_(c, "error.product_or_its_variation_does_not_exist")
 
+	case errors.Is(err, ErrJSONBody):
+		return i18n.T_(c, "error.err_json_body")
+
 	default:
 		return i18n.T_(c, "error.err_internal_server_error")
 	}
@@ -191,7 +197,8 @@ func GetErrorStatus(err error) int {
 		errors.Is(err, ErrNoRootFound),
 		errors.Is(err, ErrMaxAmtOfCartsReached),
 		errors.Is(err, ErrUserHasNoSuchCart),
-		errors.Is(err, ErrProductOrItsVariationDoesNotExist):
+		errors.Is(err, ErrProductOrItsVariationDoesNotExist),
+		errors.Is(err, ErrJSONBody):
 		return fiber.StatusBadRequest
 	case errors.Is(err, ErrEmailExists):
 		return fiber.StatusConflict