<?php
namespace common\models;

use api\components\UserPass;
use Yii;
use yii\base\InvalidConfigException;
use yii\base\NotSupportedException;
use yii\behaviors\TimestampBehavior;
use yii\db\ActiveRecord;
use yii\web\IdentityInterface;

/**
 * Поля модели:
 * @property integer $id
 * @property string  $uuid
 * @property string  $username
 * @property string  $email
 * @property string  $password_hash
 * @property integer $password_hash_strategy
 * @property string  $password_reset_token
 * @property string  $auth_key
 * @property integer $status
 * @property integer $created_at
 * @property integer $updated_at
 *
 * Геттеры-сеттеры:
 * @property string  $password пароль пользователя (только для записи)
 */
class Account extends ActiveRecord implements IdentityInterface {

    const STATUS_DELETED = -10;
    const STATUS_REGISTERED = 0;
    const STATUS_ACTIVE = 10;

    const PASS_HASH_STRATEGY_OLD_ELY = 0;
    const PASS_HASH_STRATEGY_YII2 = 1;

    public static function tableName() {
        return '{{%accounts}}';
    }

    public function behaviors() {
        return [
            TimestampBehavior::className(),
        ];
    }

    public function rules() {
        return [
        ];
    }

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

    /**
     * @inheritdoc
     */
    public static function findIdentityByAccessToken($token, $type = null) {
        throw new NotSupportedException('"findIdentityByAccessToken" is not implemented.');
    }

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

    /**
     * Finds user by password reset token
     *
     * @param string $token password reset token
     *
     * @return static|null
     *
     * TODO: этот метод нужно убрать из базовой модели
     */
    public static function findByPasswordResetToken($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 $token password reset token
     *
     * @return boolean
     *
     * TODO: этот метод нужно убрать из базовой модели
     */
    public static function isPasswordResetTokenValid($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
     * @param integer $passwordHashStrategy
     *
     * @return bool if password provided is valid for current user
     * @throws InvalidConfigException
     */
    public function validatePassword($password, $passwordHashStrategy = NULL) {
        if ($passwordHashStrategy === NULL) {
            $passwordHashStrategy = $this->password_hash_strategy;
        }

        switch($passwordHashStrategy) {
            case self::PASS_HASH_STRATEGY_OLD_ELY:
                $hashedPass = UserPass::make($this->email, $password);
                return $hashedPass === $this->password_hash;

            case self::PASS_HASH_STRATEGY_YII2:
                return Yii::$app->security->validatePassword($password, $this->password_hash);

            default:
                throw new InvalidConfigException('You must set valid password_hash_strategy before you can validate password');
        }
    }

    /**
     * @param string $password
     * @throws InvalidConfigException
     */
    public function setPassword($password) {
        switch($this->password_hash_strategy) {
            case self::PASS_HASH_STRATEGY_OLD_ELY:
                $password = UserPass::make($this->email, $password);
                break;

            case self::PASS_HASH_STRATEGY_YII2:
                $password = Yii::$app->security->generatePasswordHash($password);
                break;

            default:
                throw new InvalidConfigException('You must specify password_hash_strategy before you can set password');
        }

        $this->password_hash = $password;
    }

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

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

    /**
     * Removes password reset token
     *
     * TODO: этот метод нужно отсюда убрать
     */
    public function removePasswordResetToken() {
        $this->password_reset_token = null;
    }

}