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login.go
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login.go
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package user
import (
"github.com/pkg/errors"
"github.com/dzeban/conduit/app"
"github.com/dzeban/conduit/password"
)
// LoginRequest describes request JSON for login handler
type LoginRequest struct {
User LoginUser `json:"user"`
}
type LoginUser struct {
Email string `json:"email"`
Password string `json:"password"` // NOTE: Plaintext password from user
}
func (r *LoginRequest) Validate() error {
if r.User.Email == "" {
return errorEmailIsRequired
}
if r.User.Password == "" {
return errorPasswordIsRequired
}
return nil
}
// Login checks the user request and logins the user
func (s *Service) Login(req *LoginRequest) (*app.User, error) {
// Validate request
err := req.Validate()
if err != nil {
return nil, app.ServiceError(err)
}
// Lookup user by email
user, err := s.store.GetUser(req.User.Email)
if err != nil {
return nil, app.InternalError(errors.Wrap(err, "failed to get user"))
}
if user == nil {
return nil, app.ServiceError(errorUserNotFound)
}
// Check password
ok, err := password.Check(req.User.Password, user.PasswordHash)
if err != nil {
return nil, app.InternalError(errors.Wrap(err, "failed to check password during login"))
}
if !ok {
return nil, app.AuthError(errorPasswordMismatch)
}
// Return the user
return user, nil
}