1package service
 2
 3import (
 4	"context"
 5
 6	"golang.org/x/crypto/bcrypt"
 7
 8	"git.sr.ht/~gabrielgio/img/pkg/database/repository"
 9	"git.sr.ht/~gabrielgio/img/pkg/ext"
10)
11
12type AuthController struct {
13	authRepository repository.AuthRepository
14	userRepository repository.UserRepository
15	key            []byte
16}
17
18func NewAuthController(
19	authRepository repository.AuthRepository,
20	userRepository repository.UserRepository,
21	key []byte,
22) *AuthController {
23	return &AuthController{
24		authRepository: authRepository,
25		userRepository: userRepository,
26		key:            key,
27	}
28}
29
30func (c *AuthController) Login(ctx context.Context, username, password []byte) ([]byte, error) {
31	id, err := c.authRepository.GetIDByUsername(ctx, string(username))
32	if err != nil {
33		return nil, err
34	}
35
36	hashedPassword, err := c.authRepository.GetPassword(ctx, id)
37	if err != nil {
38		return nil, err
39	}
40
41	if err := bcrypt.CompareHashAndPassword(hashedPassword, password); err != nil {
42		return nil, err
43	}
44
45	token := &ext.Token{
46		UserID:   id,
47		Username: string(username),
48	}
49	return ext.WriteToken(token, c.key)
50}
51
52// InitialRegister register a initial user, it will validate if there is another
53// user stored already. If so an error `InvlidaInput` will be returned
54func (c *AuthController) InitialRegister(ctx context.Context, username, password []byte, path []byte) error {
55	exist, err := c.userRepository.Any(ctx)
56	if err != nil {
57		return err
58	}
59
60	if exist {
61		return InvlidInput
62	}
63
64	hash, err := bcrypt.GenerateFromPassword(password, bcrypt.MinCost)
65	if err != nil {
66		return err
67	}
68
69	_, err = c.userRepository.Create(ctx, &repository.CreateUser{
70		Username: string(username),
71		Password: hash,
72		Path:     string(path),
73	})
74
75	return err
76}