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<?php
namespace CirrusSearch\Search\Rescore;
use CirrusSearch\SearchConfig;
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 */
abstract class FunctionScoreBuilder implements BoostFunctionBuilder {
    /**
     * @var SearchConfig
     */
    protected $config;
    /**
     * @var float global weight of this function score builder
     */
    protected $weight;
    /**
     * @param SearchConfig $config the search config
     * @param float $weight the global weight
     */
    public function __construct( $config, $weight ) {
        $this->config = $config;
        $this->weight = $this->getOverriddenFactor( $weight );
    }
    /**
     * Utility method to extract a factor (float) that can
     * be overridden by a config value or an URI param
     *
     * @param float|array $value
     * @return float
     */
    protected function getOverriddenFactor( $value ) {
        if ( is_array( $value ) ) {
            $returnValue = (float)$value['value'];
            if ( isset( $value['config_override'] ) ) {
                // Override factor with config
                $fromConfig = $this->config->get( $value['config_override'] );
                if ( $fromConfig !== null ) {
                    $returnValue = (float)$fromConfig;
                }
            }
            if ( isset( $value['uri_param_override'] ) ) {
                // Override factor with uri param
                $uriParam = $value['uri_param_override'];
                $request = \RequestContext::getMain()->getRequest();
                if ( $request ) {
                    $fromUri = $request->getVal( $uriParam );
                    if ( $fromUri !== null && is_numeric( $fromUri ) ) {
                        $returnValue = (float)$fromUri;
                    }
                }
            }
            return $returnValue;
        } else {
            return (float)$value;
        }
    }
}