Refactor category validation

validator/category.go

@@ -0,0 +1,36 @@
+// Copyright 2021 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package validator // import "miniflux.app/validator"
+
+import (
+	"miniflux.app/model"
+	"miniflux.app/storage"
+)
+
+// ValidateCategoryCreation validates category creation.
+func ValidateCategoryCreation(store *storage.Storage, userID int64, request *model.CategoryRequest) *ValidationError {
+	if request.Title == "" {
+		return NewValidationError("error.title_required")
+	}
+
+	if store.CategoryTitleExists(userID, request.Title) {
+		return NewValidationError("error.category_already_exists")
+	}
+
+	return nil
+}
+
+// ValidateCategoryModification validates category modification.
+func ValidateCategoryModification(store *storage.Storage, userID, categoryID int64, request *model.CategoryRequest) *ValidationError {
+	if request.Title == "" {
+		return NewValidationError("error.title_required")
+	}
+
+	if store.AnotherCategoryExists(userID, categoryID, request.Title) {
+		return NewValidationError("error.category_already_exists")
+	}
+
+	return nil
+}