<?php

mb_http_output('UTF-8');

class BookSearch
{
    /** @var SolrClient  */
    private $client;
    /** @var SolrQuery  */
    private $query;
    private $queryParts = array();

    public function __construct()
    {
        $options = array
        (
            'hostname' => Configuration::get('solr.server'),
            'port' => Configuration::get('solr.port'),
            'login' => Configuration::get('solr.username'),
            'password' => Configuration::get('solr.password'),
            'path' => 'solr/bsr1',
        );

        $this->client = new SolrClient($options);
        $this->query = new SolrQuery();
        $this->query->setQuery('*:*');

        $this->query->addField('id');
        $this->query->addField('title');
        $this->query->addField('author');
        $this->query->addField('code');
        $this->query->addField('category');
        $this->query->addField('summary');

        $this->query->addParam('q.op', 'AND');
    }

    public function addQuery($queryText, $queryField = null, $escape = true)
    {
        if($escape) {
            $queryText = SolrUtils::escapeQueryChars($queryText);
        }

        if (strlen($queryField) > 0) {
            $queryText = "$queryField:\"$queryText\"";
        }

        $this->queryParts[] = $queryText;
    }

    public function addResultField($field)
    {
        $this->query->addField($field);
    }

    public function addSortField($field, $order = SolrQuery::ORDER_DESC)
    {
        $this->query->addSortField($field, $order);
    }

    public function addFacet($field, $minCount = 2)
    {
        $this->query->setFacet(true);
        $this->query->addFacetField($field);
        $this->query->setFacetMinCount($minCount, $field);
    }

    public function setYearInterval($beginning = 0, $end = 2500)
    {
    }

    /**
     * @param int $start
     * @param int $count
     * @return SolrObject
     */
    public function getResults($start = 0, $count = 15)
    {
        if (count($this->queryParts) == 0)
            $query = '*:*';
        else {
            $query = implode(' AND ', $this->queryParts);
        }
        $this->query->setQuery($query);
        $this->query->setStart($start);
        $this->query->setRows($count);

        return $this->client->query($this->query)->getResponse();
    }
}