/**
* Returns the GCal export link for a given event id.
*
* @param int|WP_Post|null $post The Event Post Object or ID, if left empty will give get the current post.
*
* @return string The URL for the GCal export link.
*/
public function googleCalendarLink($post = null)
{
if (is_null($post)) {
$post = self::postIdHelper($post);
}
if (is_numeric($post)) {
$post = WP_Post::get_instance($post);
}
if (!$post instanceof WP_Post) {
return false;
}
// After this point we know that we have a safe WP_Post object
// Fetch if the Event is a Full Day Event
$is_all_day = Tribe__Date_Utils::is_all_day(get_post_meta($post->ID, '_EventAllDay', true));
// Fetch the required Date TimeStamps
$start_date = Tribe__Events__Timezones::event_start_timestamp($post->ID);
// Google Requires that a Full Day event end day happens on the next Day
$end_date = Tribe__Events__Timezones::event_end_timestamp($post->ID) + ($is_all_day ? DAY_IN_SECONDS : 0);
if ($is_all_day) {
$dates = date('Ymd', $start_date) . '/' . date('Ymd', $end_date);
} else {
$dates = date('Ymd', $start_date) . 'T' . date('Hi00', $start_date) . '/' . date('Ymd', $end_date) . 'T' . date('Hi00', $end_date);
}
// Fetch the
$location = trim($this->fullAddressString($post->ID));
$event_details = apply_filters('the_content', get_the_content($post->ID));
// Hack: Add space after paragraph
// Normally Google Cal understands the newline character %0a
// And that character will automatically replace newlines on urlencode()
$event_details = str_replace('</p>', '</p> ', $event_details);
$event_details = strip_tags($event_details);
//Truncate Event Description and add permalink if greater than 996 characters
if (strlen($event_details) > 996) {
$event_url = get_permalink($post->ID);
$event_details = substr($event_details, 0, 996);
//Only add the permalink if it's shorter than 900 characters, so we don't exceed the browser's URL limits
if (strlen($event_url) < 900) {
$event_details .= sprintf(esc_html__(' (View Full %1$s Description Here: %2$s)', 'the-events-calendar'), $this->singular_event_label, $event_url);
}
}
$params = array('action' => 'TEMPLATE', 'text' => urlencode(strip_tags($post->post_title)), 'dates' => $dates, 'details' => urlencode($event_details), 'location' => urlencode($location), 'trp' => 'false', 'sprop' => 'website:' . home_url());
$timezone = Tribe__Events__Timezones::get_event_timezone_string($post->ID);
$timezone = Tribe__Events__Timezones::maybe_get_tz_name($timezone);
// If we have a good timezone string we setup it; UTC doesn't work on Google
if (false !== $timezone) {
$params['ctz'] = urlencode($timezone);
}
/**
* Allow users to Filter our Google Calendar Link params
* @var array Params used in the add_query_arg
* @var int Event ID
*/
$params = apply_filters('tribe_google_calendar_parameters', $params, $post->ID);
$base_url = 'http://www.google.com/calendar/event';
$url = add_query_arg($params, $base_url);
return $url;
}
