Location Search

<?php

/**
 * Search
 */
class Search {

	public $postcode;
	public $transient_name;
	public $location;
	public $locations_paid = array();
	public $locations_free = array();
	public $locations_ordered;
	public $price_low;
	public $price_high;
	public $ord;
	public $min_price;
	public $max_price;
	public $has_paid_results = false;

	public function __construct( $postcode, $pl, $pu, $dl, $du, $ord ) {

		$this->postcode = $postcode;
		$this->ord = $ord;

		$this->check_location();

		$posts = $this->get_posts();

		foreach ( $posts->posts as $post ) {

			$latlong          = $this->get_lat_longs( $post->ID );
			$paid             = $this->get_paid( $post->ID );
			$rating           = $this->get_rating( $post->ID );
			$price            = $this->get_price( $post->ID );



			$distance = number_format( $this->calculate_distance($latlong[0]), 2, '.', '' );

			if ( ( $distance >= $dl && $distance <= $du && $price >= $pl && $price <= $pu  ) ) {

				$result = array(
					'postcode'         => $postcode,
					'post_id'          => $post->ID,
					'post_title'       => get_the_title( $post->ID ),
					'distance'         => $distance,
					'rating'           => $rating,
					'price'            => $price,
					'paid'             => $paid
				);


				if ($paid) {
					array_push($this->locations_paid, $result);
					$this->has_paid_results = true;
				} else {
					array_push($this->locations_free, $result);
				}


			}

		}

		if($this->ord == 'asc'){
			$this->array_sort( $this->locations_paid, 'distance' );
			$this->array_sort( $this->locations_free, 'distance' );
		} else if($this->ord == 'pl'){
			$this->array_sort( $this->locations_paid, 'price' );
			$this->array_sort( $this->locations_free, 'price' );
		} else if($this->ord == 'ph'){
			$this->array_sort( $this->locations_paid, 'price' );
			$this->array_sort( $this->locations_free, 'price' );

			$this->locations_paid = array_reverse($this->locations_paid);
			$this->locations_free = array_reverse($this->locations_free);
		}



		// join arrays
		$this->locations_ordered = array_merge( $this->locations_paid, $this->locations_free );



		// get cheapest
		$all = $this->locations_ordered;
		$this->array_sort( $all, 'price' );
		reset($all);
		$this->min_price = $all[key($all)]['price'];

		$all = array_reverse($all);
		reset($all);
		$this->max_price = $all[key($all)]['price'];


	}

	/**
	 * Returns the distance in miles between locations
	 *
	 * @param  array $latlong
	 * @return int
	 */
	public function calculate_distance($latlong)
	{
		$lat2 = isset($latlong['lat']) ? $latlong['lat'] : null;
		$lon2 = isset($latlong['lng']) ? $latlong['lng'] : null;

		$lon1 = $this->location['result']['longitude'];
		$lat1 = $this->location['result']['latitude'];

		$theta = $lon1 - $lon2;
		$dist  = sin( deg2rad( $lat1 ) ) * sin( deg2rad( $lat2 ) ) + cos( deg2rad( $lat1 ) ) * cos( deg2rad( $lat2 ) ) * cos( deg2rad( $theta ) );
		$dist  = acos( $dist );
		$dist  = rad2deg( $dist );
		$miles = $dist * 60 * 1.1515;

		return $miles;

	}


	public function check_location() {
		$location_details = $this->get_location();

		if ( $location_details['status'] == 200 ) {
			$this->location = $location_details;
		} else {
			return 'Postcode not found';
		}
	}


	public function get_location() {
		return json_decode( file_get_contents( 'https://api.postcodes.io/postcodes/' . str_replace( ' ', '', $this->postcode ) ), true );
	}


	public function get_posts() {
		$args = array(
			'post_type'      => 'funeral_directors',
			'posts_per_page' => -1,
			'order_by'       => 'funeral_price',
			'order'          => $this->ord,
			'meta_key'     => 'direct_cremation',
			'meta_value'   => '0'
		);

		$posts = new WP_Query( $args );

		return $posts;

	}


	public function get_lat_longs( $post_id ) {
		return get_post_meta( $post_id, 'map_pin_location', false );
	}


	public function get_paid( $post_id ) {
		return get_post_meta( $post_id, 'paid', true );
	}


	public function get_rating( $post_id ) {
		return get_post_meta( $post_id, 'rating', true );
	}


	public function get_price( $post_id ) {
		return get_post_meta( $post_id, 'funeral_price', true );
	}



	public function array_sort( &$array, $key ) {
		$sorter = array();
		$ret    = array();
		reset( $array );
		foreach ( $array as $ii => $va ) {
			$sorter[ $ii ] = $va[ $key ];
		}
		asort( $sorter );
		foreach ( $sorter as $ii => $va ) {
			$ret[ $ii ] = $array[ $ii ];
		}
		$array = $ret;
	}


}