package models

import (
	"fmt"
	"golang.org/x/crypto/bcrypt"
)

type User struct {
	ID       int64  `xorm:"int(11) autoincr not null unique pk"`
	Name     string `xorm:"varchar(250)"`
	Username string `xorm:"varchar(250) not null"`
	Password string `xorm:"varchar(250) not null"`
	Email    string `xorm:"varchar(250) not null"`
	Created  int64  `xorm:"created"`
	Updated  int64  `xorm:"updated"`
}

func (User) TableName() string {
	return "users"
}

// Hash a password
func HashPassword(password string) (string, error) {
	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
	return string(bytes), err
}

// Check user credentials
func CheckUserCredentials(username, password string) (User, error) {

	// Check if the user exists
	var user = User{Username: username}
	exists, err := x.Get(&user)
	if err != nil {
		return User{}, err
	}

	if !exists {
		return User{}, fmt.Errorf("User does not exist!")
	}

	// Check the users password
	err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password))

	if err != nil {
		return User{}, err
	}

	return user, nil
}