feat: dtos for wishList service;

feat: validator for guid;
feat: created interface for wishlist service

backend/internal/services/wishlist.go

@@ -0,0 +1,27 @@
+// Copyright (c) 2025 Nikolai Papin
+//
+// This file is part of Easywish
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package services
+
+import "easywish/internal/dto"
+
+type WishListService interface {
+	CreateWishList(cinfo dto.ClientInfo, object dto.NewWishListDto) (*dto.WishListDto, error)
+	CreateWish(cinfo dto.ClientInfo, object dto.NewWishDto) (*dto.WishDto, error)
+	GetWishListByGuid(cinfo dto.ClientInfo, guid string) (*dto.WishListDto, error)
+	GetUserWishListsPaginated(cinfo dto.ClientInfo, amount int, page int) (*[]dto.WishListDto, error)
+}