Fix lesson comments being visible to unregistered users in some cases

changelog/fix-lesson-comments-visible-to-unregistered-users

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fixed
+
+Fix lesson comments being visible to unregistered users in some cases

includes/unsupported-theme-handlers/class-sensei-unsupported-theme-handler-cpt.php

@@ -76,7 +76,7 @@ public function handle_request() {
 		add_filter( 'template_include', array( $this, 'force_page_template' ) );
 
 		// Disable comments if not block theme and post type is not lesson.
-		if ( ! $this->is_lesson_cpt_in_block_fse_theme() ) {
+		if ( ! $this->should_show_comments() ) {
 			Sensei_Unsupported_Theme_Handler_Utils::disable_comments();
 		}
 
@@ -121,7 +121,7 @@ public function cpt_page_content_filter( $content ) {
 		$content  = $renderer->render();
 
 		// Disable theme comments.
-		if ( ! $this->is_lesson_cpt_in_block_fse_theme() ) {
+		if ( ! $this->should_show_comments() ) {
 			Sensei_Unsupported_Theme_Handler_Utils::disable_comments();
 		}
 
@@ -247,4 +247,19 @@ public function force_page_template( $template ) {
 	private function is_lesson_cpt_in_block_fse_theme() {
 		return 'lesson' === $this->post_type && Sensei_Utils::is_fse_theme();
 	}
+
+	/**
+	 * Determine if comments should be shown.
+	 *
+	 * Comments are only shown for lessons in block themes if the user can view
+	 * the lesson.
+	 *
+	 * @since $$next-version$$
+	 *
+	 * @return bool
+	 */
+	private function should_show_comments(): bool {
+		return $this->is_lesson_cpt_in_block_fse_theme()
+			&& sensei_can_user_view_lesson();
+	}
 }