<?php
/**
 * The admin-specific functionality of the plugin.
 *
 * @link       https://datamad.co.uk/wordpress-plugins/admin-events-extended/
 * @since      0.0.1
 *
 * @package    Admin_Events_Extended
 * @subpackage Admin_Events_Extended/admin
 */

/**
 * The admin-specific functionality of the plugin.
 *
 * Defines the plugin name, version, and two examples hooks for how to
 * enqueue the admin-specific stylesheet and JavaScript.
 *
 * @package    Admin_Events_Extended
 * @subpackage Admin_Events_Extended/admin
 * @author     Todd Halfpenny <todd@toddhalfpenny.com>
 */
class Admin_Events_Extended_Admin {

	/**
	 * The ID of this plugin.
	 *
	 * @since    0.0.1
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    0.0.1
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    0.0.1
	 * @param      string $plugin_name       The name of this plugin.
	 * @param      string $version    The version of this plugin.
	 */
	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version = $version;

	}

	/**
	 * Hook that handles the HTTP responses
	 *
	 * @since  0.0.1
	 * @param array  $response HTTP response.
	 * @param array  $args HTTP request arguments.
	 * @param string $url The request URL.
	 * @return array Updated HTTP response.
	 */
	public function aee_handle_http_requests( $response, $args, $url ) {
		// Parse request and response body to a hash for human readable log output.
		$log_response = $response;
		// if ( isset( $args['body'] ) ) {
		// 	parse_str( $args['body'], $args['body_parsed'] );
		// } else {
		// 	return $response;
		// }

		if ( isset( $log_response['body'] ) ) {
			parse_str( $log_response['body'], $log_response['body_parsed'] );
		} else {
			return $response;
		}

		$logfile = plugin_dir_path( __FILE__ ) . '/http_requests.log';

		if ( $this->is_community_events_call( $url ) ) {
			$my_json = json_decode( $log_response['body'] );
			if ( $this->is_near_london( $my_json->location->latitude, $my_json->location->longitude ) ) {

				$london_events = json_decode( $this->get_london_events() );

				array_unshift( $my_json->events, $london_events );

				/*
				Temp Log code
				file_put_contents( $logfile, json_encode( $my_json->events ), FILE_APPEND );
				file_put_contents( $logfile, "\n\n", FILE_APPEND );
				*/
				$log_response['body'] = json_encode( $my_json );
				return $log_response;
			}
		}

		return $response;

		/*
		Write into logfile
		file_put_contents( $logfile, sprintf( "### %s, URL: %s\nREQUEST: %sRESPONSE: %s\n", date( 'c' ), $url, print_r( $args, true ), print_r( $log_response, true ) ), FILE_APPEND );
		return $response;
		*/
	}


	/**
	 * Is the URL the one used to get community events
	 *
	 * @since  0.0.1
	 * @param  string $url The URL that has been called.
	 * @return boolean      Is the URL the one used to get community events.
	 */
	private function is_community_events_call( $url ) {
		if ( 'https://api.wordpress.org/events/1.0/' == $url ) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Is the event near London
	 *
	 * @since  0.0.1
	 * @param  integer $lat  Latitude.
	 * @param  integer $long Longitude.
	 * @return boolean       Is the event near London.
	 */
	private function is_near_london( $lat, $long ) {
		$london_lat = 51.51279;
		$london_long = -0.09184;
		if ( ( $lat > ( $london_lat - 1.8 ) ) &&
				 ( $lat < ( $london_lat + 1.8 ) ) &&
				 ( $long > ( $london_long - 1.8 ) ) &&
				 ( $long < ( $london_long + 1.8 ) ) ) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Gets the events from external API
	 *
	 * @since  0.0.1
	 * @return object Object representing one event.
	 */
	private function get_london_events() {
		$my_events  = array();

		$url = 'https://api.meetup.com/London-WordPress/events?photo-host=public&sig_id=20603821&sig=590d8cc9ba769db34c73bac1e2c54c8dc5d405f9';

		$response = wp_remote_get( $url );
		if (  wp_remote_retrieve_response_code( $response ) == 200 ) {
			$body = wp_remote_retrieve_body( $response );
			$body_json = json_decode( $body );

			// We just take the first event, for now.
			$first_event = reset( $body_json );

			// Try to get local time - only works if setting is on the site, otherwise use GMT.
			$time_zone_str = get_option( 'timezone_string' );
			if ( '' != $time_zone_str ) {
				$my_date = get_date_from_gmt( date( 'Y-m-d H:i:s', $first_event->time / 1000 ) );
			} else {
				$my_date = date( 'Y-m-d H:i:s', $first_event->time / 1000 );
			}

			$my_event = array(
				'type'  => 'meetup',
				'title' => $first_event->name,
				'url'   => $first_event->link,
				'meetup' => 'London WordPress',
				'meetup_url' => 'https://www.meetup.com/London-WordPress/',
				'date'   => $my_date,
				'location' => array(
					'location' => $first_event->venue->city . ', ' . $first_event->venue->name,
					'country' => 'gb',
					),
				);
		}

		return json_encode( $my_event );
	}
}