WIP ical feed rendering

includes/templates/endpoints/ical-download.php

@@ -11,33 +11,71 @@
 // Exit if accessed directly.
 defined( 'ABSPATH' ) || exit; // @codeCoverageIgnore
 
+use GatherPress\Core\Calendars;
 use GatherPress\Core\Event;
 
-// Start collecting all output.
-ob_start();
 
-// Prepare event data.
-$gatherpress_event    = new Event( get_queried_object_id() );
-$gatherpress_filename = $gatherpress_event->get_datetime_start( 'Y-m-d' ) . '_' . $gatherpress_event->event->post_name . '.ics';
+// Output the event as an iCalendar (.ics) file.
+function gatherpress_output_ics_file() {
+    // Start output buffering to capture all output.
+    ob_start();
 
-// Send file headers.
-header( 'Content-Description: .ics for ' . $gatherpress_event->event->post_title );
-header( 'Content-Disposition: inline; filename=' . $gatherpress_filename );
-header( 'Content-type: text/calendar; charset=' . strtolower( get_option( 'blog_charset' ) ) . ';' );
-header( 'Pragma: 0' );
-header( 'Expires: 0' );
+    // Get the event and prepare the filename.
+    $event    = new Event( get_queried_object_id() );
+    $filename = gatherpress_generate_ics_filename( $event );
 
-// Generate ical.
-echo wp_kses_post( $gatherpress_event->get_ics_calendar_download() );
+    // Send headers for downloading the .ics file.
+    gatherpress_send_ics_headers( $filename );
 
-// Get collected output and render it.
-$gatherpress_ics_file = ob_get_contents();
+    // Output the generated iCalendar content.
+    echo wp_kses_post( Calendars::get_ics_calendar_download() );
 
-// Calculate and send the file size.
-$gatherpress_filesize = strlen( $gatherpress_ics_file );
-header( 'Content-Length: ' . $gatherpress_filesize );
+    // Get the generated output and calculate file size.
+    $ics_content = ob_get_contents();
+    $filesize    = strlen( $ics_content );
 
-ob_end_clean();
-echo wp_kses_post( $gatherpress_ics_file );
+    // Send the file size in the header.
+    header( 'Content-Length: ' . $filesize );
 
-exit();
+    // End output buffering and clean up.
+    ob_end_clean();
+
+    // Output the iCalendar content.
+    echo wp_kses_post( $ics_content );
+
+    exit(); // Terminate the script after the file has been output.
+}
+
+// Generate the .ics filename based on the event date and name.
+function gatherpress_generate_ics_filename( Event $event ) {
+    $date      = $event->get_datetime_start( 'Y-m-d' );
+    $post_name = $event->event->post_name;
+    return $date . '_' . $post_name . '.ics';
+}
+
+// Send the necessary headers for the iCalendar file download.
+function gatherpress_send_ics_headers( $filename ) {
+
+    $charset = strtolower( get_option( 'blog_charset' ) );
+
+    // Content description
+    header( 'Content-Description: File Transfer' );
+
+    // Ensure proper content type for the calendar file
+    header( 'Content-Type: text/calendar; charset=' . $charset );
+
+    // Force download in most browsers while keeping inline for compatibility.
+    header( 'Content-Disposition: attachment; filename="' . $filename . '"' );
+
+    // Disable caching to avoid browser caching issues.
+    header( 'Cache-Control: no-store, no-cache, must-revalidate' );
+    header( 'Cache-Control: post-check=0, pre-check=0', false );
+    header( 'Pragma: no-cache' );
+    header( 'Expires: 0' );
+
+    // Prevent content sniffing which might lead to MIME type mismatch.
+    header( 'X-Content-Type-Options: nosniff' );
+}
+
+// Call the function to output the .ics file.
+gatherpress_output_ics_file();

includes/templates/endpoints/ical-feed.php

@@ -11,30 +11,73 @@
 // Exit if accessed directly.
 defined( 'ABSPATH' ) || exit; // @codeCoverageIgnore
 
-// Start collecting all output.
-ob_start();
+use GatherPress\Core\Calendars;
+use GatherPress\Core\Event;
 
-// Prepare event data.
-$gatherpress_filename = 'all-events.ics';
 
-// Send file headers.
-header( 'Content-Description: .ics for all events' );
-header( 'Content-Disposition: attachment; filename=' . $gatherpress_filename );
-header( 'Content-type: text/calendar; charset=' . get_option( 'blog_charset' ) . ';' );
-header( 'Pragma: 0' );
-header( 'Expires: 0' );
+// Output the event as an iCalendar (.ics) file.
+function gatherpress_output_ics_file() {
+    // Start output buffering to capture all output.
+    ob_start();
 
-// Generate ical.
-echo wp_kses_post( 'hello subscribeable ical feed world.' );
+    // Get the event and prepare the filename.
+    // $event    = new Event( get_queried_object_id() );
+    // $filename = gatherpress_generate_ics_filename( $event );
+    $filename = 'calendar.ics';
 
-// Get collected output and render it.
-$gatherpress_ics_file = ob_get_contents();
+    // Send headers for downloading the .ics file.
+    gatherpress_send_ics_headers( $filename );
 
-// Calculate and send the file size.
-$gatherpress_filesize = strlen( $gatherpress_ics_file );
-header( 'Content-Length: ' . $gatherpress_filesize );
+    // Output the generated iCalendar content.
+    echo wp_kses_post( Calendars::get_ics_calendar_feed() );
 
-ob_end_clean();
-echo wp_kses_post( $gatherpress_ics_file );
+    // Get the generated output and calculate file size.
+    $ics_content = ob_get_contents();
+    $filesize    = strlen( $ics_content );
 
-exit();
+    // Send the file size in the header.
+    header( 'Content-Length: ' . $filesize );
+
+    // End output buffering and clean up.
+    ob_end_clean();
+
+    // Output the iCalendar content.
+    echo wp_kses_post( $ics_content );
+
+    exit(); // Terminate the script after the file has been output.
+}
+
+// Generate the .ics filename based on the event date and name.
+/* 
+function gatherpress_generate_ics_filename( Event $event ) {
+    $date      = $event->get_datetime_start( 'Y-m-d' );
+    $post_name = $event->event->post_name;
+    return $date . '_' . $post_name . '.ics';
+} */
+
+// Send the necessary headers for the iCalendar file download.
+function gatherpress_send_ics_headers( $filename ) {
+
+    $charset = strtolower( get_option( 'blog_charset' ) );
+
+    // Content description
+    header( 'Content-Description: File Transfer' );
+
+    // Ensure proper content type for the calendar file
+    header( 'Content-Type: text/calendar; charset=' . $charset );
+
+    // Force download in most browsers while keeping inline for compatibility.
+    header( 'Content-Disposition: attachment; filename="' . $filename . '"' );
+
+    // Disable caching to avoid browser caching issues.
+    header( 'Cache-Control: no-store, no-cache, must-revalidate' );
+    header( 'Cache-Control: post-check=0, pre-check=0', false );
+    header( 'Pragma: no-cache' );
+    header( 'Expires: 0' );
+
+    // Prevent content sniffing which might lead to MIME type mismatch.
+    header( 'X-Content-Type-Options: nosniff' );
+}
+
+// Call the function to output the .ics file.
+gatherpress_output_ics_file();