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<?php

namespace Elastica\Filter;

/**
 * geo_shape filter or provided shapes
 *
 * Filter provided shape definitions
 *
 * @category Xodoa
 * @package Elastica
 * @author BennieKrijger <benniekrijger@gmail.com>
 * @link http://www.elasticsearch.org/guide/reference/query-dsl/geo-shape-filter/
 */
class GeoShapeProvided extends AbstractGeoShape
{
    const TYPE_ENVELOPE         = 'envelope';
    const TYPE_MULTIPOINT       = 'multipoint';
    const TYPE_POINT            = 'point';
    const TYPE_MULTIPOLYGON     = 'multipolygon';
    const TYPE_LINESTRING       = 'linestring';
    const TYPE_POLYGON          = 'polygon';

    /**
     * Type of the geo_shape
     *
     * @var string
     */
    protected $_shapeType;

    /**
     * Coordinates making up geo_shape
     *
     * @var array Coordinates making up geo_shape
     */
    protected $_coordinates;

    /**
     * Construct geo_shape filter
     *
     * @param string $path        The path/field of the shape searched
     * @param array  $coordinates Points making up the shape
     * @param string $shapeType   Type of the geo_shape:
     *                            point, envelope, linestring, polygon,
     *                            multipoint or multipolygon
     */
    public function __construct($path, array $coordinates, $shapeType = self::TYPE_ENVELOPE)
    {
        $this->_path = $path;
        $this->_shapeType = $shapeType;
        $this->_coordinates = $coordinates;
    }

    /**
     * Converts filter to array
     *
     * @see \Elastica\Filter\AbstractFilter::toArray()
     * @return array
     */
    public function toArray()
    {
        return array(
            'geo_shape' => array(
                $this->_path => array(
                    'shape' => array(
                        'type' => $this->_shapeType,
                        'coordinates' => $this->_coordinates
                    ),
                    'relation' => $this->_relation
                ),
            )
        );
    }
}