/
usecase.go
55 lines (45 loc) · 1.08 KB
/
usecase.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
package cart
type UseCase interface {
GetCartInfo() ([]Cart, error)
AddItemToCart(item Cart) (string, error)
DeleteItemFromCart(id int64) (string, error)
ResetCart() (string, error)
}
func NewUseCase(repo Repository) UseCase {
return &useCase{repo: repo}
}
type useCase struct {
repo Repository
}
// AddItemToCart implements UseCase
func (uc *useCase) AddItemToCart(item Cart) (string, error) {
err := uc.repo.UpdateInsert(&item)
if err != nil {
return "", err
}
return "item added to cart", nil
}
// DeleteItemFromCart implements UseCase
func (uc *useCase) DeleteItemFromCart(id int64) (string, error) {
err := uc.repo.Delete(id)
if err != nil {
return "Cannot Delete Item / Item has empty", err
}
return "item deleted", nil
}
// GetCartInfo implements UseCase
func (uc *useCase) GetCartInfo() ([]Cart, error) {
res, err := uc.repo.GetAll()
if err != nil {
return nil, err
}
return res, nil
}
// ResetCart implements UseCase
func (uc *useCase) ResetCart() (string, error) {
err := uc.repo.DeleteAll()
if err != nil {
return "", err
}
return "cart has been reset", nil
}