<?php
namespace backend\models;

use common\base\BaseActive;
use Yii;
use yii\base\NotSupportedException;
use yii\behaviors\TimestampBehavior;
use yii\web\IdentityInterface;
use yii\behaviors\AttributeBehavior;

/**
 * User model
 *
 * @property integer $id
 * @property string $username
 * @property string $nickname
 * @property string $head_img
 * @property string $password_hash
 * @property string $password_reset_token
 * @property string $email
 * @property string $auth_key
 * @property integer $status
 * @property role $role
 * @property integer $created_at
 * @property integer $updated_at
 * @property integer $last_login_at
 * @property string $password write-only password
 */
class AdminUser extends BaseActive implements IdentityInterface
{
    const STATUS_DELETED = 0;
    const STATUS_ACTIVE = 10;
    const ROLE_ROOT=10;
    const ROLE_MANAGEMENT=30;

    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%admin_user}}';
    }

    /**
     * {@inheritdoc}
     */
    public function behaviors()
    {
        return [
            TimestampBehavior::class,
        ];

    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            ['status', 'default', 'value' => self::STATUS_ACTIVE],
            ['status', 'in', 'range' => [self::STATUS_ACTIVE, self::STATUS_DELETED]],
            ['role','in','range'=>[self::ROLE_ROOT,self::ROLE_MANAGEMENT]],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public static function findIdentity($id)
    {
        return static::findOne(['id' => $id, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * {@inheritdoc}
     */
    public static function findIdentityByAccessToken($token, $type = null)
    {
        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, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * Finds user by password reset token
     *
     * @param string $token password reset token
     * @return static|null
     */
    public static function findByPasswordResetToken($token)
    {
        if (!static::isPasswordResetTokenValid($token)) {
            return null;
        }

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

    /**
     * Finds out if password reset token is valid
     *
     * @param string $token password reset token
     * @return bool
     */
    public static function isPasswordResetTokenValid($token)
    {
        if (empty($token)) {
            return false;
        }

        $timestamp = (int) substr($token, strrpos($token, '_') + 1);
        $expire = Yii::$app->params['user.passwordResetTokenExpire'];
        return $timestamp + $expire >= time();
    }

    /**
     * {@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 $password password to validate
     * @return bool if password provided is valid for current user
     */
    public function validatePassword($password)
    {
        return Yii::$app->security->validatePassword($password, $this->password_hash);
    }

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

    /**
     * Generates "remember me" authentication key
     */
    public function generateAuthKey()
    {
        $this->auth_key = Yii::$app->security->generateRandomString();
    }

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

    /**
     * Removes password reset token
     */
    public function removePasswordResetToken()
    {
        $this->password_reset_token = null;
    }
    /**
     * @return array
     * @throws \yii\base\InvalidConfigException
     */
    public function fields()
    {
        $fields = parent::fields();
        unset($fields['auth_key'], $fields['password_hash'], $fields['password_reset_token']);
        $this->created_at= Yii::$app->formatter->asDatetime($this->created_at);
        $this->updated_at= Yii::$app->formatter->asDatetime($this->updated_at);
        $this->last_login_at= Yii::$app->formatter->asDatetime($this->last_login_at);
        return $fields;
    }

}