WIP New v2 plugin with widget and shortcode, and more WP friendly markup.

includes/squat-radar-connector.php

@@ -0,0 +1,73 @@
+<?php
+
+
+class Squat_Radar_Connector {
+
+	const BASE_URL = 'https://radar.squat.net';
+	const API_EVENTS = '/api/1.2/search/events.json';
+
+	function get_events( $query ) {
+
+		$url = self::BASE_URL . self::API_EVENTS . '?' . build_query( $query );
+		$response = wp_remote_get( $url );
+		if ( is_wp_error( $response ) ) {
+			throw new Squat_Radar_Connector_Exception( $response->get_error_message() );
+		}
+		$code = wp_remote_retrieve_response_code( $response );
+		if ( $code != 200) {
+			throw new Squat_Radar_Connector_Exception( wp_remote_retrieve_body( $response ), $code );
+		}
+		return json_decode( wp_remote_retrieve_body( $response ), true);
+
+	}
+
+	function decode_search_url( $url ) {
+		$matches = [];
+		$result = [];
+		// Urldecode not required here because of the regex match.
+		// Radar paramaters here are transcoded so will match.
+		if (preg_match('|//radar.squat.net/([a-z]{2})/events/([a-zA-Z0-9/]*)|', $url, $matches)) {
+			$result['language'] = $matches[1];
+			foreach (array_chunk(explode('/', $matches[2]), 2) as $key_value_pair) {
+				$result['facets'][$key_value_pair[0]] = $key_value_pair[1];
+			}
+		}
+
+		return $result;
+	}
+
+	function encode_api_query( $facets = [], $fields = [], $language = '', $limit = 10 ) {
+		$query = [];
+
+		// Urlencode should do nothing here @see comment in decode_search_url.
+		// If someone has snuck something in it will however help.
+		foreach ( $facets as $key => $value ) {
+			$query[] = ['facets[' . urlencode($key) . '][]' => urlencode($value)];
+		}
+		if ( ! empty($fields) ) {
+			$query['fields'] = urlencode(implode(',', $fields));
+		}
+		if ( ! empty($language) ) {
+			$query['language'] = urlencode($language);
+		}
+		if ( ! empty($limit) ) {
+			$query['limit'] = urlencode($limit);
+		}
+		return $query;
+	}
+
+	function events( $facets, $fields = [], $language = NULL, $limit = 10, $expiration = 10800, $reset = FALSE ) {
+		$transient_key = 'squat_radar_events_' . sha1(implode($facets) . implode($fields) . $language . $limit);
+		if (! $reset && $data = get_transient( $transient_key )) {
+			return $data;
+		}
+
+		$query = $this->encode_api_query( $facets, $fields, $language, $limit );
+		$events = $this->get_events($query);
+
+		set_transient( $transient_key, $events, $expiration );
+		return $events;
+	}
+}
+
+class Squat_Radar_Connector_Exception extends Exception { }