Elton Minetto
86 lines
1.6 KiB
Go
86 lines
1.6 KiB
Go
package book
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import (
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"strings"
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"time"
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"github.com/eminetto/clean-architecture-go-v2/entity"
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)
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//Service book usecase
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type Service struct {
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repo Repository
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}
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//NewService create new service
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func NewService(r Repository) *Service {
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return &Service{
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repo: r,
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}
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}
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//CreateBook create a book
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func (s *Service) CreateBook(title string, author string, pages int, quantity int) (entity.ID, error) {
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b, err := entity.NewBook(title, author, pages, quantity)
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if err != nil {
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return b.ID, err
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}
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return s.repo.Create(b)
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}
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//GetBook get a book
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func (s *Service) GetBook(id entity.ID) (*entity.Book, error) {
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b, err := s.repo.Get(id)
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if b == nil {
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return nil, entity.ErrNotFound
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}
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if err != nil {
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return nil, err
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}
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return b, nil
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}
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//SearchBooks search books
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func (s *Service) SearchBooks(query string) ([]*entity.Book, error) {
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books, err := s.repo.Search(strings.ToLower(query))
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if err != nil {
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return nil, err
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}
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if len(books) == 0 {
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return nil, entity.ErrNotFound
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}
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return books, nil
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}
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//ListBooks list books
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func (s *Service) ListBooks() ([]*entity.Book, error) {
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books, err := s.repo.List()
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if err != nil {
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return nil, err
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}
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if len(books) == 0 {
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return nil, entity.ErrNotFound
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}
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return books, nil
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}
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//DeleteBook Delete a book
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func (s *Service) DeleteBook(id entity.ID) error {
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_, err := s.GetBook(id)
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if err != nil {
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return err
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}
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return s.repo.Delete(id)
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}
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//UpdateBook Update a book
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func (s *Service) UpdateBook(e *entity.Book) error {
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err := e.Validate()
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if err != nil {
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return err
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}
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e.UpdatedAt = time.Now()
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return s.repo.Update(e)
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}
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