<?php

namespace app\models;

use Yii;
use yii\base\NotSupportedException;
use yii\behaviors\BlameableBehavior;
use yii\behaviors\TimestampBehavior;
use yii\db\ActiveQuery;
use yii\db\ActiveRecord;
use yii\web\IdentityInterface;

/**
 * User model
 *
 * @property integer $id
 * @property string $password_hash
 * @property string $password_reset_token
 * @property string $email
 * @property string $auth_key
 * @property integer $status
 * @property integer $created_at
 * @property integer $updated_at
 * @property string $password write-only password
 */
class User extends ActiveRecord implements IdentityInterface {

    public $form_password;

    const STATUS_PASSIVE = 0;
    const STATUS_ACTIVE = 10;

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

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

    /**
     * @inheritdoc
     */
    public function rules() {
        return [
            ['status', 'default', 'value' => self::STATUS_ACTIVE],
            ['status', 'in', 'range' => [self::STATUS_ACTIVE, self::STATUS_PASSIVE]],
            [['auth_key', 'password_hash', 'email'], 'required'],
            [['status', 'created_at', 'updated_at', 'created_by', 'updated_by'], 'integer'],
            [['password_hash', 'password_reset_token', 'firstname', 'lastname'], 'string', 'max' => 255],
            [['auth_key'], 'string', 'max' => 32],
            [['email'], 'string', 'min' => 5, 'max' => 254],
            [['email'], 'unique'],
            [['email'], 'email'],
            [['email'], 'trim'],
            [['password_reset_token'], 'unique'],
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels() {
        return [
            'id' => Yii::t('user', 'ID'),
            'firstname' => Yii::t('user', 'Name'),
            'lastname' => Yii::t('user', 'Surname'),
            'form_password' => Yii::t('user', 'Password'),
            'auth_key' => Yii::t('user', 'Auth Key'),
            'password_hash' => Yii::t('user', 'Password Hash'),
            'password_reset_token' => Yii::t('user', 'Password Reset Token'),
            'email' => Yii::t('user', 'Email'),
            'status' => Yii::t('app', 'Status'),
            'created_at' => Yii::t('app', 'Created At'),
            'updated_at' => Yii::t('app', 'Updated At'),
            'created_by' => Yii::t('app', 'Created By'),
            'updated_by' => Yii::t('app', 'Updated By'),
            'authItems' => Yii::t('user', 'Auth Items'),
        ];
    }

    /**
     * @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(['auth_key' => $token, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * Finds user by email
     *
     * @param string $email
     * @return static|null
     */
    public static function findByEmail($email) {
        return static::findOne(['email' => $email, '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;
        }

        $timestamp = (int) substr($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 $password password to validate
     * @return boolean if password provided is valid for current user
     */
    public function validatePassword($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;
    }

    /**
     * @return ActiveQuery
     */
    public function getAuthItems() {
        return $this->hasMany(AuthItem::className(), ['name' => 'item_name'])
                        ->via('authItemLinks');
    }

    public function getAuthItemLinks() {
        return $this->hasMany(AuthAssignment::className(), ['user_id' => 'id']);
    }

    /**
     * 
     * @return string fullname
     */
    public function getFullname() {
        $parts = [$this->firstname, $this->lastname];
        foreach ($parts as $key => $value) {
            if (!$value)
                unset($parts[$key]);
        }
        return join(' ', $parts);
    }

}