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auth.go
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auth.go
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package handlers
import (
"errors"
"fmt"
"log"
"time"
"github.com/dgrijalva/jwt-go/v4"
"golang.org/x/crypto/bcrypt"
"github.com/snykk/go_gin_ca/config"
"github.com/snykk/go_gin_ca/constants"
"github.com/snykk/go_gin_ca/datatransfers"
"github.com/snykk/go_gin_ca/models"
)
func (m *module) AuthenticateUser(credentials datatransfers.UserLogin) (token string, err error) {
var user models.User
if user, err = m.db.userRepository.GetUserByUsername(credentials.Username); err != nil {
return "", errors.New("incorrect credentials")
}
if err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(credentials.Password)); err != nil {
return "", errors.New("incorrect credentials")
}
return generateToken(user)
}
func generateToken(user models.User) (string, error) {
now := time.Now()
expiry := time.Now().Add(constants.AuthenticationTimeout)
token := jwt.NewWithClaims(jwt.SigningMethodHS256, datatransfers.JWTClaims{
ID: user.ID,
IsAdmin: user.IsAdmin,
ExpiresAt: expiry.Unix(),
IssuedAt: now.Unix(),
})
return token.SignedString([]byte(config.AppConfig.JWTSecret))
}
func (m *module) RegisterUser(credentials datatransfers.UserSignup) (err error) {
var hashedPassword []byte
if hashedPassword, err = bcrypt.GenerateFromPassword([]byte(credentials.Password), bcrypt.DefaultCost); err != nil {
return errors.New("failed hashing password")
}
if _, err = m.db.userRepository.InsertUser(models.User{
Username: credentials.Username,
Email: credentials.Email,
Password: string(hashedPassword),
IsAdmin: credentials.IsAdmin,
Bio: credentials.Bio,
}); err != nil {
log.Print(err)
return fmt.Errorf("error inserting user. %v", err)
}
return
}