<?php

namespace app\components\AbstractParent\Model\SearchModel;

use Yii;
use yii\base\Exception;
use yii\base\Model;
use yii\db\ActiveQuery;
use app\components\data\ActiveDataProvider;

abstract class AbstractSearch extends Model {
    protected $_filterFields = array();
    public $query;

    public function search($params) {
        $query = $this->_getQuery();
        $dataProvider = new ActiveDataProvider(array(
            'query' => $query,
        ));

        if (!($this->load($params) && $this->validate())) {
            return $dataProvider;
        }

        $this->_bindQueryCondition($query);

        if ($this->query && !empty($this->_filterFields)) {
            $conditionArray = array();

            foreach ($this->_filterFields as $field) {
                $conditionArray[] = $field . ' LIKE "%'
                    . strtr($this->query, array('%' => '\%', '_' => '\_', '\\' => '\\\\')) . '%"';
            }
            if (!empty($conditionArray)) {
                $query->andWhere('(' . implode(' || ', $conditionArray) . ')');
            }
        }
        return $dataProvider;
    }

    protected function _bindQueryCondition(ActiveQuery $query)
    {
        return $this;
    }

    protected function addCondition(ActiveQuery $query, $attribute, $partialMatch = false) {
        $value = $this->$attribute;
        if (trim($value) === '') {
            return;
        }
        if ($partialMatch) {
            //$value = '%' . strtr($value, array('%' => '\%', '_' => '\_', '\\' => '\\\\')) . '%';
            $query->andWhere(array('like', $attribute, $value));
        } else {
            $query->andWhere(array($attribute => $value));
        }
    }

    /**
     * @throws \Exception
     * @return ActiveQuery
     */
    protected function _getQuery()
    {
        throw new Exception('Method _getQuery() must be overwrite');
    }

}