Add an Export-to-Outlook button for The Events Calendar

README.md

This code snipet is based on the events-calendar-outlook-import-fix code. It is aiming at adding a button on the Wordpress Event page to let users export event to various calendars.

Code is licensed under the GPL 2.0 or greater license.

the-events-calendar-outlook-link.php

/**
  * Add Outlook calendar export links
  * irkanu: https://gist.github.com/irkanu/01b30869f5af1fa405d1
  * GeoffEW: https://gist.github.com/GeoffEW/b8f0bb5fc2b8510c6ad4f0b60fcf3fb9
  */
class Tribe__Events__Remove__Export__Links {
	public function __construct() {
		add_action( 'init', array( $this, 'single_event_links' ) );
	}
	public function single_event_links() {
		remove_action(
			'tribe_events_single_event_after_the_content',
			array( $this->ical_provider(), 'single_event_links' )
		);
	// Add "Export to Outlook" buton on single events
	add_action('tribe_events_single_event_after_the_content', 'customized_tribe_single_event_links');
	}

	protected function ical_provider() {
		return function_exists( 'tribe' )
			? tribe( 'tec.iCal' ) // Current
			: 'Tribe__Events__iCal'; // Legacy
	}
}
new Tribe__Events__Remove__Export__Links();
 
function customized_tribe_single_event_links()    {
    if (is_single() && post_password_required()) {
        return;
    }
 
    echo '<div class="tribe-events-cal-links">';
    echo '<a class="tribe-events-gcal tribe-events-button" href="' . tribe_get_gcal_link() . '" title="' . __( 'Add to Google Calendar', 'tribe-events-calendar-pro' ) . '">+ Google Calendar </a>';
    echo '<a class="tribe-events-gcal tribe-events-button" href="' . cquic_get_ical_outlook_link() . '">+ iCal to MS Outlook </a>';
    echo '<a class="tribe-events-ical tribe-events-button" href="' . tribe_get_single_ical_link() . '">+ iCal to Mac/Apple </a>';
    echo '</div><!-- .tribe-events-cal-links -->';
}

function cquic_get_ical_outlook_link() {
                class CQuIC__Events__iCal extends Tribe__Events__iCal{
                    function cquic_ical_outlook_modify( $content ) {
	                $properties  = explode( PHP_EOL, $content );
	                $searchValue = "X-WR-CALNAME";
	                $fl_array    = preg_grep( '/^' . "$searchValue" . '.*/', $properties );
	                $keynum      = key( $fl_array );
	                unset( $properties[ $keynum ] );
	                $content     = implode( "\n", $properties );
	                return $content;
                    }
                }
                add_filter( 'tribe_ical_properties', 'cquic_ical_outlook_modify', 10, 2 );
		$output = CQuIC__Events__iCal::get_ical_link();
	
		return apply_filters( 'cquic_get_ical_outlook_link', $output );
	}