// Copyright 2026 Mihna123 Software // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. package listing import "log/slog" type Repository interface { GetAll() ([]Listing, error) GetByCategory(category string) ([]Listing, error) } type Service struct { repository Repository } func New(r Repository) *Service { return &Service{repository: r} } func (s *Service) GetAll() ([]Listing, error) { listings, err := s.repository.GetAll() if err != nil { slog.Error("listing service", "error", err) return nil, err } return listings, nil } func (s *Service) GetByCategory(c string) ([]Listing, error) { listings, err := s.repository.GetByCategory(c) if err != nil { slog.Error("listing service", "error", err) return nil, err } return listings, nil }