Fixed WP_Filesystem initialization and resource file extension

- [Fixed] Properly initialized WP_Filesystem
- [Fixed] Changed resource files to use HTML extension
- [Added] New HTML file for admin requirements notice
- [Removed] PHP file for admin requirements notice

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## ## 2024-05-26
+- [Fixed] Properly initialise WP_Filesystem
+- [Fixed] Use HTML file extension for resouurce files
+
 ## 2024-05-23
 - [Removed] Vendor Folder
 - [Added] Vendor folder to gitignore

src/resources/admin-requirements-notice.html

@@ -0,0 +1,3 @@
+<div class="notice notice-error">
+	<p>%1$s %2$s <a href="%3$s" target="_blank">%4$s</a> %5$s</p>
+</div>

src/src/admin/class-admin-notifications.php

@@ -70,7 +70,7 @@ class Admin_Notifications {
 	public static function print_requirement_notice(): void {
 
 		$notice = ( WP_Filesystem_Utility::get_filesystem() )
-			->get_contents( Config::get( 'plugin_dir' ) . 'resources/admin-requirements-notice.php' );
+			->get_contents( Config::get( 'plugin_dir' ) . 'resources/admin-requirements-notice.html' );
 		printf(
 			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 			$notice,

src/src/utilities/class-wp-filesystem-utility.php

@@ -75,8 +75,7 @@ public static function get_filesystem(): object {
 
 		if ( null === self::$filesystem ) {
 
-			require_once \ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php';
-			require_once \ABSPATH . 'wp-admin/includes/class-wp-filesystem-direct.php';
+			WP_Filesystem();
 			self::$filesystem = new WP_Filesystem_Direct( true );
 		}