<?php

namespace app\models;

use Yii;
use yii\base\NotSupportedException;
use yii\db\ActiveRecord;
use yii\helpers\Security;
use yii\web\IdentityInterface;

/**
 * This is the model class for table "users".
 *
 * @property string $user_id
 * @property string $username
 * @property string $password
 * @property string $salt
 */
class User extends \yii\db\ActiveRecord implements IdentityInterface
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'users';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['username', 'password'], 'required'],
            [['username', 'password'], 'string', 'max' => 100]
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'user_id' => 'User ID',
            'username' => 'Username',
            'password' => 'Password'
        ];
    }
    /** INCLUDE USER LOGIN VALIDATION FUNCTIONS**/
    /**
     * @inheritdoc
     */
    public static function findIdentity($id)
    {
        return static::findOne($id);
    }

    /**
     * @inheritdoc
     */
    /* modified */
    public static function findIdentityByAccessToken($token, $type = null)
    {
        return static::findOne(['access_token' => $token]);
    }

    /* removed
        public static function findIdentityByAccessToken($token)
        {
            throw new NotSupportedException('"findIdentityByAccessToken" is not implemented.');
        }
    */
    /**
     * Finds user by username
     *
     * @param  string $username
     * @return static|null
     */
    public static function findByUsername($username)
    {
        return static::findOne(['username' => $username]);
    }

    /**
     * Finds user by password reset token
     *
     * @param  string $token password reset token
     * @return static|null
     */
    public static function findByPasswordResetToken($token)
    {
        $expire = \Yii::$app->params['user.passwordResetTokenExpire'];
        $parts = explode('_', $token);
        $timestamp = (int)end($parts);
        if ($timestamp + $expire < time()) {
            // token expired
            return null;
        }

        return static::findOne([
            'password_reset_token' => $token
        ]);
    }

    /**
     * @inheritdoc
     */
    public function getId()
    {
        return $this->getPrimaryKey();
    }

    /**
     * @inheritdoc
     */
    public function getAuthKey()
    {
//        return $this->auth_key;
    }

    /**
     * @inheritdoc
     */
    public function validateAuthKey($authKey)
    {
        return $this->getAuthKey() === $authKey;
    }

    /**
     * Validates password
     *
     * @param  string $password password to validate
     * @return boolean if password provided is valid for current user
     */
    public function validatePassword($password)
    {
        if ($this->password === md5($this->username . $password . $this->salt)) {
            return true;
        }
    }

    /**
     * Generates password hash from password and sets it to the model
     *
     * @param string $password
     */
    public function setPassword($password)
    {
        $this->password_hash = Security::generatePasswordHash($password);
    }

    /**
     * Generates "remember me" authentication key
     */
    public function generateAuthKey()
    {
        $this->auth_key = Security::generateRandomKey();
    }

    /**
     * Generates new password reset token
     */
    public function generatePasswordResetToken()
    {
        $this->password_reset_token = Security::generateRandomKey() . '_' . time();
    }

    /**
     * Removes password reset token
     */
    public function removePasswordResetToken()
    {
        $this->password_reset_token = null;
    }

    public function beforeSave($insert)
    {
        if (parent::beforeSave($insert)) {
            if ($this->isNewRecord) {
                $this->auth_key = Yii::$app->getSecurity()->generateRandomString();
            }
            return true;
        }
        return false;
    }

}