1package usersrv
 2
 3import (
 4	"errors"
 5	"time"
 6
 7	"github.com/arnaucube/gogame/database"
 8	"github.com/arnaucube/gogame/models"
 9	jwt "github.com/dgrijalva/jwt-go"
10	"golang.org/x/crypto/bcrypt"
11	"gopkg.in/mgo.v2/bson"
12)
13
14type Service struct {
15	db *database.Db
16}
17
18func New(db *database.Db) *Service {
19	return &Service{
20		db,
21	}
22}
23
24func hashPassword(password string) (string, error) {
25	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
26	return string(hash), err
27}
28func checkPasswordHash(password, hash string) bool {
29	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
30	return err == nil
31}
32
33func (srv Service) Register(name, password, email string) (*models.User, error) {
34	var userDb models.User
35	err := srv.db.Users.Find(bson.M{"email": email}).One(&userDb)
36	if err == nil {
37		return nil, errors.New("user already exist")
38	}
39
40	hashedPassword, err := hashPassword(password)
41	if err != nil {
42		return nil, err
43	}
44	user, err := models.NewUser(srv.db, name, hashedPassword, email)
45	return user, err
46}
47
48var signingKey = []byte("TODO") // TODO
49
50func (srv Service) Login(email, password string) (*string, *models.User, error) {
51	var userDb models.UserDb
52	err := srv.db.Users.Find(bson.M{"email": email}).One(&userDb)
53	if err != nil {
54		return nil, nil, errors.New("user not exist")
55	}
56	if !checkPasswordHash(password, userDb.Password) {
57		return nil, nil, errors.New("error with password")
58	}
59	user := models.UserDbToUser(srv.db, userDb)
60
61	// create jwt
62	token := jwt.New(jwt.SigningMethodHS256)
63	claims := make(jwt.MapClaims)
64	claims["user"] = true
65	claims["exp"] = time.Now().Add(time.Hour * 24).Unix()
66	token.Claims = claims
67
68	tokenString, err := token.SignedString(signingKey)
69	if err != nil {
70		return nil, nil, errors.New("error creating token")
71	}
72
73	return &tokenString, user, err
74}
75
76// func (srv Service) GetUser(id bson.ObjectId) (*models.User, error) {
77//         // update user stats
78//         user := getUserFromDB
79//         user.GetStats()
80//
81// }
82//
83// func (srv Service) GetUser(id bson.ObjectId) (*models.User, error) {
84//         // update user stats
85//
86// }