EA > Preserve / reconvert links in Microsoft Teams invitations when imported from Outlook

preserve-links.php

<?php
/**
 * Preserve / reconvert links in Microsoft Teams invitations when imported from Outlook.
 *
 * Usage: Add the snippet to your functions.php file or with a plugin like Code Snippets
 *
 * @param array          $event Which Event data was sent
 * @param stdClass|array $item  Raw version of the data sent from EA
 * @param object         $data  The record we are dealing with
 *
 * @return void
 *
 * @author: Andras Guseo
 *
 * Plugins required: The Events Calendar (Event Aggregator)
 * Created: January 10, 2024
 * Last updated: January 31, 2024
 */

function tec_ea_preserve_teams_links( $event, $item, $data ) {
	$current_source = $data->meta[ 'source' ];

	/**
	 * START: valid sources
	 * Limit to the defined source URLs.
	 * If the import is from a different URL, then the rest will be skipped.
	 * Add import source URLs as needed or remove completely if you want this to run on all import sources.
	 */
	$valid_sources = [
		'https://outlook.office365.com/owa/calendar/{long-string}.ics',
		'https://outlook.office365.com/owa/calendar/{other-long-string}.ics',
	];

	// Check if it's a valid source.
	if ( ! in_array( $current_source, $valid_sources ) ) {
		return;
	}

	// Grab the unsafe description
	$description = $item->description;
	$unsafe_description = $item->unsafe_description;

	$has_borked_urls = (bool) strpos( $unsafe_description, "<http" );
	$has_zoom = (bool) strpos( $description, "zoom.us/" );

	// Bail, if the text doesn't have URLs or and Zoom links.
	if (
		! $has_borked_urls === false
		&& ! $has_zoom
	) {
		return;
	}

	if ( $has_borked_urls ) {
		// Regex for URLs starting with "<http". Typically, Microsoft Teams Meetings.
		$search = '/(Click here to join the meeting|Download Teams|Join on the web|Learn More|Meeting options)(?:<)((https:\/\/)(.+?))(?:>)/';

		// Search and replace the description.
		$description = preg_replace( $search, '<a href="$2" target="_blank" title="$1">$1</a>', $unsafe_description );
	}

	if ( $has_zoom ) {
		// Regex for Zoom URLs.
		$search = '/(Join Zoom Meeting)(?:\\n)((https:\/\/.*zoom.us\/)(.+?))(\\nMeeting ID)/';

		// Search and replace the description.
		$description = preg_replace( $search, '<br><a href="$2" target="_blank" title="$1">$1</a>$5', $description );
	}

	// Set post arguments.
	$args = [
		'ID'           => $event[ 'ID' ],
		'post_content' => wp_kses(
			$description,
			wp_kses_allowed_html( 'post' ),
		),
	];

	// Update post.
	wp_update_post( $args );
}

add_action( 'tribe_aggregator_after_insert_post', 'tec_ea_preserve_teams_links', 10, 3 );