<?php

namespace backend\models;

use Yii;

/**
 * This is the model class for table "{{%admin}}".
 *
 * @property integer $id
 * @property string $username
 * @property string $auth_key
 * @property string $password_hash
 * @property string $password_reset_token
 * @property string $email
 * @property integer $role
 * @property integer $status
 * @property integer $created_at
 * @property integer $updated_at
 */
class Admin extends \yii\db\ActiveRecord implements \yii\web\IdentityInterface  
{
    
    const STATUS_DELETED = 0;  
    const STATUS_ACTIVE = 10;
    
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return '{{%admin}}';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['username', 'auth_key', 'password_hash', 'email'], 'required'],
            [['role', 'status', 'create_time', 'update_time'], 'integer'],
            [['username', 'password_hash', 'password_reset_token', 'email'], 'string', 'max' => 255],
            [['auth_key'], 'string', 'max' => 32],
            [['username'], 'unique'],
            [['email'], 'unique'],
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'username' => 'Username',
            'auth_key' => 'Auth Key',
            'password_hash' => 'Password Hash',
            'password_reset_token' => 'Password Reset Token',
            'email' => 'Email',
            'role' => 'Role',
            'status' => 'Status',
            'create_time' => 'Created Time',
            'update_time' => 'Updated Time',
        ];
    }
    
    public function behaviors() {
        return [
            [
                'class' => \yii\behaviors\TimestampBehavior::className(),
                'createdAtAttribute' => 'create_time',
                'updatedAtAttribute' => 'update_time',
            ]
        ];
    }
    
    /** 
     * @inheritdoc 
     */  
    public static function findIdentity($id)  
    {  
        return static::findOne(['id' => $id, 'status' => self::STATUS_ACTIVE]);  
    }  
  
    /** 
     * @inheritdoc 
     */  
    public static function findIdentityByAccessToken($token, $type = null)  
    {  
        return static::findOne(['access_token' => $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, '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 $token password reset token 
     * @return boolean 
     */  
    public static function isPasswordResetTokenValid($token)  
    {  
        if (empty($token)) {  
            return false;  
        }  
        $expire = Yii::$app->params['user.passwordResetTokenExpire'];  
        $parts = explode('_', $token);  
        $timestamp = (int) end($parts);  
        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 $password password to validate 
     * @return boolean if password provided is valid for current user 
     */  
    public function validatePassword($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;  
    }  
}