user.go

package model

import (
	"errors"

	"golang.org/x/crypto/bcrypt"
)

// User ...
type User struct {
	ID                int    `json:"id"`
	Email             string `json:"email"`
	Password          string `json:"password,omitempty"`
	EncryptedPassword string `json:"-"`
}

// Validate ...
func (u *User) Validate() error {
	if u.Email != "hacker@hacker.hack" || u.Password != "anonym" {
		return errors.New("u r not hacker")
	}

	return nil
}

// BeforeCreate ...
func (u *User) BeforeCreate() error {
	if len(u.Password) > 0 {
		enc, err := encryptString(u.Password)
		if err != nil {
			return err
		}
		u.EncryptedPassword = enc
	}

	return nil
}

// Sanitize ...
func (u *User) Sanitize() {
	u.Password = ""
}

// ComparePassword ...
func (u *User) ComparePassword(password string) bool {
	return bcrypt.CompareHashAndPassword([]byte(u.EncryptedPassword), []byte(password)) == nil
}

func encryptString(s string) (string, error) {
	b, err := bcrypt.GenerateFromPassword([]byte(s), bcrypt.MinCost)
	if err != nil {
		return "", err
	}

	return string(b), nil
}