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Filename : Users.php
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<?php

namespace app\models;

use Yii;

/**
 * This is the model class for table "users".
 *
 * @property int $id
 * @property string $email
 * @property string $password
 * @property string $firstname
 * @property string|null $lastname
 * @property int $role
 * @property int|null $school_id
 * @property string|null $authkey
 * @property string|null $secret
 * @property int $status
 * @property string $created
 *
 * @property Blogs[] $blogs
 * @property Schools $school
 * @property Schools[] $schools
 */
class Users extends \yii\db\ActiveRecord implements \yii\web\IdentityInterface
{

    const ROLE_SUPER_ADMIN = 1; 
    const ROLE_SCHOOL_MANAGER = 2;
    const ROLE_BLOG_EDITOR = 3;

     public $newpassword;
    
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return 'users';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['email', 'password', 'firstname', 'role', 'status', 'created'], 'required'],
            [['role', 'school_id', 'status'], 'integer'],
            [['created'], 'safe'],

            [['email', 'firstname', 'lastname'], 'string', 'max' => 50],
            [['authKey', 'secret'], 'string', 'max' => 300],
             [['password'], 'string', 'max' => 300],
            [['newpassword'], 'string', 'min' => 6,'max' => 300],
            [['email'], 'unique'],
            [['school_id'], 'exist', 'skipOnError' => true, 'targetClass' => Schools::className(), 'targetAttribute' => ['school_id' => 'id']],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => Yii::t('app', 'ID'),
            'email' => Yii::t('app', 'Email'),
            'password' => Yii::t('app', 'Password'),
            'newpassword' => Yii::t('app', 'Password'),
            'firstname' => Yii::t('app', 'Firstname'),
            'lastname' => Yii::t('app', 'Lastname'),
            'role' => Yii::t('app', 'User Role'),
            'school_id' => Yii::t('app', 'School'),
            'authKey' => Yii::t('app', 'Auth Key'),
            'secret' => Yii::t('app', 'Secret'),
            'status' => Yii::t('app', 'Status'),
            'created' => Yii::t('app', 'Created'),
        ];
    }

    /**
     * Gets query for [[Blogs]].
     *
     * @return \yii\db\ActiveQuery
     */
    public function getBlogs()
    {
        return $this->hasMany(Blogs::className(), ['user_id' => 'id'])->inverseOf('user');
    }

    /**
     * Gets query for [[School]].
     *
     * @return \yii\db\ActiveQuery
     */
    public function getSchool()
    {
        return $this->hasOne(Schools::className(), ['id' => 'school_id'])->inverseOf('users');
    }

    /**
     * Gets query for [[Schools]].
     *
     * @return \yii\db\ActiveQuery
     */
    public function getSchools()
    {
        return $this->hasMany(Schools::className(), ['user_id' => 'id'])->inverseOf('user');
    }

    public static function isUserSuperAdmin($id)
    {
        if (static::findOne(['id' => $id, 'role' => self::ROLE_SUPER_ADMIN])) {
            return true;
        } else {
            return false;
        }
    }
     public static function isUserSchoolManager($id)
    {
        if (static::findOne(['id' => $id, 'role' => self::ROLE_SCHOOL_MANAGER])) {
            return true;
        } else {
            return false;
        }
    }
     public static function isUserBlogEditor($id)
    {
        if (static::findOne(['id' => $id, 'role' => self::ROLE_BLOG_EDITOR])) {
            return true;
        } else {
            return false;
        }
    }


 /**
     * @inheritdoc
     */
    public static function findIdentity($id)
    {
        return static::findOne($id);
    }

    /**
     * @inheritdoc
     */
    public static function findIdentityByAccessToken($token, $type = null)
    {
         throw new yii\base\NotSupportedException();
         
    }

    public static function findByEmail($email){
        return self::findOne(['email'=>$email, 'status' => 1]);

    }
    /**
     * @inheritdoc
     *  @return int|string current user ID
     */
    public function getId()
    {
        return $this->id;
    }  

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

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

    public function validatePassword($password){

        return Yii::$app->getSecurity()->validatePassword($password, $this->password);
    }
    public function beforeSave($insert)
    {
        if (parent::beforeSave($insert)) {
           
            if ($this->isNewRecord) {
                $this->password = \Yii::$app->getSecurity()->generatePasswordHash($this->password);
                $this->authKey = \Yii::$app->security->generateRandomString();          
            } 
            else if(!$this->isNewRecord){
                if($this->newpassword)
                $this->password = \Yii::$app->getSecurity()->generatePasswordHash($this->newpassword);

            }
            return true;

    }
}

}