Lesson.php — Tutor LMS – eLearning and online course solution 2.2.4

tutor / classes / Lesson.php

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Lesson.php

645 lines

1	<?php
2	/**
3	* Manage Lesson
4	*
5	* @package Tutor
6	* @author Themeum <support@themeum.com>
7	* @link https://themeum.com
8	* @since 1.0.0
9	*/
10
11	namespace TUTOR;
12
13	if ( ! defined( 'ABSPATH' ) ) {
14	exit;
15	}
16
17	use Tutor\Models\LessonModel;
18
19	/**
20	* Lesson class
21	*
22	* @since 1.0.0
23	*/
24	class Lesson extends Tutor_Base {
25
26	/**
27	* Register hooks
28	*
29	* @since 1.0.0
30	*
31	* @return void
32	*/
33	public function __construct() {
34	parent::__construct();
35
36	add_action( 'add_meta_boxes', array( $this, 'register_meta_box' ) );
37	add_action( 'save_post_' . $this->lesson_post_type, array( $this, 'save_lesson_meta' ) );
38
39	add_action( 'wp_ajax_tutor_load_edit_lesson_modal', array( $this, 'tutor_load_edit_lesson_modal' ) );
40	add_action( 'wp_ajax_tutor_modal_create_or_update_lesson', array( $this, 'tutor_modal_create_or_update_lesson' ) );
41	add_action( 'wp_ajax_tutor_delete_lesson_by_id', array( $this, 'tutor_delete_lesson_by_id' ) );
42
43	add_filter( 'get_sample_permalink', array( $this, 'change_lesson_permalink' ), 10, 2 );
44	add_action( 'admin_init', array( $this, 'flush_rewrite_rules' ) );
45
46	/**
47	* Add Column
48	*/
49	add_filter( "manage_{$this->lesson_post_type}_posts_columns", array( $this, 'add_column' ), 10, 1 );
50	add_action( "manage_{$this->lesson_post_type}_posts_custom_column", array( $this, 'custom_lesson_column' ), 10, 2 );
51
52	/**
53	* Frontend Action
54	*/
55	add_action( 'template_redirect', array( $this, 'mark_lesson_complete' ) );
56
57	add_action( 'wp_ajax_tutor_render_lesson_content', array( $this, 'tutor_render_lesson_content' ) );
58
59	/**
60	* For public course access
61	*/
62	add_action( 'wp_ajax_nopriv_tutor_render_lesson_content', array( $this, 'tutor_render_lesson_content' ) );
63
64	/**
65	* Autoplay next video
66	*
67	* @since 1.4.9
68	*/
69	add_action( 'wp_ajax_autoload_next_course_content', array( $this, 'autoload_next_course_content' ) );
70
71	/**
72	* Load next course item after click complete button
73	*
74	* @since 1.5.3
75	*/
76	add_action( 'tutor_lesson_completed_after', array( $this, 'tutor_lesson_completed_after' ), 999 );
77
78	/**
79	* Lesson comment & reply ajax handler
80	*
81	* @since 2.0.0
82	*/
83	add_action( 'wp_ajax_tutor_single_course_lesson_load_more', array( $this, 'tutor_single_course_lesson_load_more' ) );
84	add_action( 'wp_ajax_tutor_create_lesson_comment', array( $this, 'tutor_single_course_lesson_load_more' ) );
85	add_action( 'wp_ajax_tutor_reply_lesson_comment', array( $this, 'reply_lesson_comment' ) );
86	}
87
88	/**
89	* Manage load more & comment create
90	*
91	* @since 2.0.6
92	* @return void send wp json data
93	*/
94	public function tutor_single_course_lesson_load_more() {
95	tutor_utils()->checking_nonce();
96	if ( 'tutor_create_lesson_comment' === Input::post( 'action' ) ) {
97	$comment_data = array(
98	'comment_content' => Input::post( 'comment', '', Input::TYPE_KSES_POST ),
99	'comment_post_ID' => Input::post( 'comment_post_ID', 0, Input::TYPE_INT ),
100	'comment_parent' => Input::post( 'comment_parent', 0, Input::TYPE_INT ),
101	);
102	self::create_comment( $comment_data );
103	}
104	ob_start();
105	tutor_load_template( 'single.lesson.comment' );
106	$html = ob_get_clean();
107
108	wp_send_json_success( array( 'html' => $html ) );
109	}
110
111	/**
112	* Registering metabox
113	*
114	* @since 1.0.0
115	* @return void
116	*/
117	public function register_meta_box() {
118	$lesson_post_type = $this->lesson_post_type;
119
120	tutor_meta_box_wrapper( 'tutor-course-select', __( 'Select Course', 'tutor' ), array( $this, 'lesson_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
121
122	tutor_meta_box_wrapper( 'tutor-lesson-videos', __( 'Lesson Video', 'tutor' ), array( $this, 'lesson_video_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
123
124	tutor_meta_box_wrapper( 'tutor-lesson-attachments', __( 'Attachments', 'tutor' ), array( $this, 'lesson_attachments_metabox' ), $lesson_post_type, 'advanced', 'default', 'tutor-admin-post-meta' );
125	}
126
127	/**
128	* Lesson metabox
129	*
130	* @since 1.0.0
131	*
132	* @return void
133	*/
134	public function lesson_metabox() {
135	include tutor()->path . 'views/metabox/lesson-metabox.php';
136	}
137
138	/**
139	* Video metabox
140	*
141	* @since 1.0.0
142	*
143	* @return void
144	*/
145	public function lesson_video_metabox() {
146	include tutor()->path . 'views/metabox/video-metabox.php';
147	}
148
149	/**
150	* Attachment metabox
151	*
152	* @since 1.0.0
153	*
154	* @return void
155	*/
156	public function lesson_attachments_metabox() {
157	include tutor()->path . 'views/metabox/lesson-attachments-metabox.php';
158	}
159
160	/**
161	* Saving lesson meta and assets
162	*
163	* @since 1.0.0
164	*
165	* @param integer $post_ID post ID.
166	* @return void
167	*/
168	public function save_lesson_meta( $post_ID ) {
169	$video_source = sanitize_text_field( tutor_utils()->array_get( 'video.source', $_POST ) ); //phpcs:ignore
170	if ( '-1' === $video_source ) {
171	delete_post_meta( $post_ID, '_video' );
172	} elseif ( $video_source ) {
173
174	// Sanitize data through helper method.
175	$video = Input::sanitize_array(
176	$_POST['video'] ?? array(), //phpcs:ignore
177	array(
178	'source_external_url' => 'esc_url',
179	'source_embedded' => 'wp_kses_post',
180	),
181	true
182	);
183	update_post_meta( $post_ID, '_video', $video );
184	}
185
186	// Attachments.
187	$attachments = array();
188	// phpcs:disable WordPress.Security.NonceVerification.Missing
189	if ( ! empty( $_POST['tutor_attachments'] ) ) {
190	//phpcs:ignore -- data sanitized through helper method.
191	$attachments = tutor_utils()->sanitize_array( wp_unslash( $_POST['tutor_attachments'] ) );
192	$attachments = array_unique( $attachments );
193	}
194
195	/**
196	* If !empty attachment then update meta else
197	* delete meta key to prevent empty data in db
198	*
199	* @since 1.8.9
200	*/
201	if ( ! empty( $attachments ) ) {
202	update_post_meta( $post_ID, '_tutor_attachments', $attachments );
203	} else {
204	delete_post_meta( $post_ID, '_tutor_attachments' );
205	}
206
207	}
208
209	/**
210	* Load edit lesson modal
211	*
212	* @since 1.0.0
213	*
214	* @return void
215	*/
216	public function tutor_load_edit_lesson_modal() {
217	tutor_utils()->checking_nonce();
218
219	$lesson_id = Input::post( 'lesson_id', 0, Input::TYPE_INT );
220	$topic_id = Input::post( 'topic_id', 0, Input::TYPE_INT );
221
222	if ( ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) {
223	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
224	}
225
226	/**
227	* If Lesson Not Exists, provide dummy
228	*/
229	$post_arr = array(
230	'ID' => 0,
231	'post_content' => '',
232	'post_type' => $this->lesson_post_type,
233	'post_title' => __( 'Draft Lesson', 'tutor' ),
234	'post_status' => 'publish',
235	'post_author' => get_current_user_id(),
236	'post_parent' => $topic_id,
237	);
238
239	$post = $lesson_id ? get_post( $lesson_id ) : (object) $post_arr;
240
241	ob_start();
242	include tutor()->path . 'views/modal/edit-lesson.php';
243	$output = ob_get_clean();
244
245	wp_send_json_success( array( 'output' => $output ) );
246	}
247
248	/**
249	* Load lesson modal for create or update lesson
250	*
251	* @since 1.0.0
252	* @since 1.5.1 updated
253	*
254	* @return void
255	*/
256	public function tutor_modal_create_or_update_lesson() {
257	tutor_utils()->checking_nonce();
258
259	global $wpdb;
260
261	/**
262	* Allow iframe inside lesson content to support
263	* embed video & other stuff
264	*
265	* @since 2.1.6
266	*/
267	add_filter( 'wp_kses_allowed_html', Input::class . '::allow_iframe', 10, 2 );
268
269	$lesson_id = Input::post( 'lesson_id', 0, Input::TYPE_INT );
270	$topic_id = Input::post( 'current_topic_id', 0, Input::TYPE_INT );
271	$current_topic_id = $topic_id;
272	$course_id = tutor_utils()->get_course_id_by( 'topic', $topic_id );
273
274	if ( ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) {
275	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
276	}
277
278	$title = Input::post( 'lesson_title' );
279	$_lesson_thumbnail_id = Input::post( '_lesson_thumbnail_id', 0, Input::TYPE_INT );
280	$lesson_content = Input::post( 'lesson_content', '', Input::TYPE_KSES_POST );
281	$is_html_active = Input::post( 'is_html_active' ) === 'true' ? true : false;
282	$raw_html_content = Input::post( 'tutor_lesson_modal_editor', '', Input::TYPE_KSES_POST );
283	$post_content = $is_html_active ? $raw_html_content : $lesson_content;
284
285	$lesson_data = array(
286	'post_type' => $this->lesson_post_type,
287	'post_title' => $title,
288	'post_name' => sanitize_title( $title ),
289	'post_content' => $post_content,
290	'post_status' => 'publish',
291	'comment_status' => 'open',
292	'post_author' => get_current_user_id(),
293	'post_parent' => $topic_id,
294	);
295
296	if ( 0 === $lesson_id ) {
297	$lesson_data['menu_order'] = tutor_utils()->get_next_course_content_order_id( $topic_id );
298	$lesson_id = wp_insert_post( $lesson_data );
299
300	if ( $lesson_id ) {
301	do_action( 'tutor/lesson/created', $lesson_id );
302	} else {
303	wp_send_json_error( array( 'message' => __( 'Couldn\'t create lesson.', 'tutor' ) ) );
304	}
305	} else {
306	$lesson_data['ID'] = $lesson_id;
307
308	do_action( 'tutor/lesson_update/before', $lesson_id );
309	wp_update_post( $lesson_data );
310	if ( $_lesson_thumbnail_id ) {
311	update_post_meta( $lesson_id, '_thumbnail_id', $_lesson_thumbnail_id );
312	} else {
313	delete_post_meta( $lesson_id, '_thumbnail_id' );
314	}
315
316	do_action( 'tutor/lesson_update/after', $lesson_id );
317	}
318
319	ob_start();
320	include tutor()->path . 'views/metabox/course-contents.php';
321	$course_contents = ob_get_clean();
322
323	wp_send_json_success( array( 'course_contents' => $course_contents ) );
324	}
325
326	/**
327	* Delete Lesson from course builder by ID
328	*
329	* @since 1.0.0
330	*
331	* @return void
332	*/
333	public function tutor_delete_lesson_by_id() {
334	tutor_utils()->checking_nonce();
335
336	$lesson_id = Input::post( 'lesson_id', 0, Input::TYPE_INT );
337
338	if ( ! tutor_utils()->can_user_manage( 'lesson', $lesson_id ) ) {
339	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
340	}
341
342	wp_delete_post( $lesson_id, true );
343	wp_send_json_success();
344	}
345
346
347	/**
348	* Changed the URI based
349	*
350	* @since 1.0.0
351	*
352	* @param string $uri URI.
353	* @param integer $lesson_id lesson ID.
354	*
355	* @return string
356	*/
357	public function change_lesson_permalink( $uri, $lesson_id ) {
358	$post = get_post( $lesson_id );
359
360	if ( $post && $post->post_type === $this->lesson_post_type ) {
361	$uri_base = trailingslashit( site_url() );
362
363	$sample_course = 'sample-course';
364	$is_course = tutor_utils()->get_course_id_by( 'lesson', get_the_ID() );
365	if ( $is_course ) {
366	$course = get_post( $is_course );
367	if ( $course ) {
368	$sample_course = $course->post_name;
369	}
370	}
371
372	$new_course_base = $uri_base . "course/{$sample_course}/lesson/%pagename%/";
373	$uri[0] = $new_course_base;
374	}
375
376	return $uri;
377	}
378
379
380	/**
381	* Flash rewrite rules
382	*
383	* @since 1.0.0
384	* @return void
385	*/
386	public function flush_rewrite_rules() {
387	$is_required_flush = get_option( 'required_rewrite_flush' );
388	if ( $is_required_flush ) {
389	flush_rewrite_rules();
390	delete_option( 'required_rewrite_flush' );
391	}
392	}
393
394	/**
395	* Add column to lesson HTML table
396	*
397	* @since 1.0.0
398	*
399	* @param array $columns columns.
400	* @return array
401	*/
402	public function add_column( $columns ) {
403	$date_col = $columns['date'];
404	unset( $columns['date'] );
405	$columns['course'] = __( 'Course', 'tutor' );
406	$columns['date'] = $date_col;
407
408	return $columns;
409	}
410
411	/**
412	* Add custom lesson column.
413	*
414	* @since 1.0.0
415	*
416	* @param string $column column name.
417	* @param integer $post_id post ID.
418	*
419	* @return mixed
420	*/
421	public function custom_lesson_column( $column, $post_id ) {
422	if ( 'course' === $column ) {
423
424	$course_id = tutor_utils()->get_course_id_by( 'lesson', $post_id );
425	if ( $course_id ) {
426	echo wp_kses(
427	'<a href="' . admin_url( 'post.php?post=' . $course_id . '&action=edit' ) . '">' . get_the_title( $course_id ) . '</a>',
428	array( 'a' => array( 'href' => true ) )
429	);
430	}
431	}
432	}
433
434	/**
435	* Mark lesson completed
436	*
437	* @since 1.0.0
438	*
439	* @return void
440	*/
441	public function mark_lesson_complete() {
442	if ( 'tutor_complete_lesson' !== Input::post( 'tutor_action' ) ) {
443	return;
444	}
445	// Checking nonce.
446	tutor_utils()->checking_nonce();
447
448	$user_id = get_current_user_id();
449
450	// TODO: need to show view if not signed_in.
451	if ( ! $user_id ) {
452	die( esc_html__( 'Please Sign-In', 'tutor' ) );
453	}
454
455	$lesson_id = Input::post( 'lesson_id', 0, Input::TYPE_INT );
456
457	if ( ! $lesson_id ) {
458	return;
459	}
460
461	$validated = apply_filters( 'tutor_validate_lesson_complete', true, $user_id, $lesson_id );
462	if ( ! $validated ) {
463	return;
464	}
465
466	do_action( 'tutor_lesson_completed_before', $lesson_id );
467	/**
468	* Marking lesson at user meta, meta format, _tutor_completed_lesson_id_{id} and value = tutor_time();
469	*/
470	LessonModel::mark_lesson_complete( $lesson_id );
471
472	do_action( 'tutor_lesson_completed_email_after', $lesson_id, $user_id );
473	do_action( 'tutor_lesson_completed_after', $lesson_id, $user_id );
474	}
475
476	/**
477	* Render the lesson content
478	*
479	* @since 1.0.0
480	*
481	* @return void
482	*/
483	public function tutor_render_lesson_content() {
484	tutor_utils()->checking_nonce();
485
486	$lesson_id = Input::post( 'lesson_id', 0, Input::TYPE_INT );
487
488	$ancestors = get_post_ancestors( $lesson_id );
489	$course_id = ! empty( $ancestors ) ? array_pop( $ancestors ) : $lesson_id;
490
491	// Course must be public or current user must be enrolled to access this lesson.
492	if ( get_post_meta( $course_id, '_tutor_is_public_course', true ) !== 'yes' && ! tutor_utils()->is_enrolled( $course_id ) ) {
493
494	$is_admin = tutor_utils()->has_user_role( 'administrator' );
495	$allowed = $is_admin ? true : tutor_utils()->is_instructor_of_this_course( get_current_user_id(), $course_id );
496
497	if ( ! $allowed ) {
498	http_response_code( 400 );
499	exit;
500	}
501	}
502
503	ob_start();
504	global $post;
505
506	$post = get_post( $lesson_id ); //phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
507	setup_postdata( $post );
508	tutor_lesson_content();
509	wp_reset_postdata();
510
511	$html = ob_get_clean();
512
513	wp_send_json_success( array( 'html' => $html ) );
514	}
515
516	/**
517	* Load next course item automatically
518	*
519	* @since 1.4.9
520	*
521	* @return void
522	*/
523	public function autoload_next_course_content() {
524	tutor_utils()->checking_nonce();
525
526	$post_id = Input::post( 'post_id', 0, Input::TYPE_INT );
527	$content_id = tutor_utils()->get_post_id( $post_id );
528	$contents = tutor_utils()->get_course_prev_next_contents_by_id( $content_id );
529
530	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
531	$next_url = false;
532	if ( $autoload_course_content ) {
533	$next_url = get_the_permalink( $contents->next_id );
534	}
535	wp_send_json_success( array( 'next_url' => $next_url ) );
536	}
537
538	/**
539	* Load next course item after click complete button
540	*
541	* @since 1.5.3
542	*
543	* @param integer $content_id content ID.
544	* @return void
545	*/
546	public function tutor_lesson_completed_after( $content_id ) {
547	$contents = tutor_utils()->get_course_prev_next_contents_by_id( $content_id );
548	$autoload_course_content = (bool) get_tutor_option( 'autoload_next_course_content' );
549	if ( $autoload_course_content ) {
550	wp_redirect( get_the_permalink( $contents->next_id ) );
551	} else {
552	wp_redirect( get_the_permalink( $content_id ) );
553	}
554	die();
555	}
556
557	/**
558	* Replay lesson comment
559	*
560	* @since 1.0.0
561	*
562	* @return void\|null
563	*/
564	public function reply_lesson_comment() {
565	tutor_utils()->checking_nonce();
566	$comment_data = array(
567	'comment_content' => Input::post( 'comment', '', Input::TYPE_KSES_POST ),
568	'comment_post_ID' => Input::post( 'comment_post_ID', 0, Input::TYPE_INT ),
569	'comment_parent' => Input::post( 'comment_parent', 0, Input::TYPE_INT ),
570	);
571	$comment_id = self::create_comment( $comment_data );
572	if ( false === $comment_id ) {
573	wp_send_json_error();
574	return;
575	}
576	$reply = get_comment( $comment_id );
577	ob_start();
578	?>
579	<div class="tutor-comments-list tutor-child-comment tutor-mt-32" id="lesson-comment-<?php echo esc_attr( $reply->comment_ID ); ?>">
580	<div class="comment-avatar">
581	<img src="<?php echo esc_url( get_avatar_url( $reply->user_id ) ); ?>" alt="">
582	</div>
583	<div class="tutor-single-comment">
584	<div class="tutor-actual-comment tutor-mb-12">
585	<div class="tutor-comment-author">
586	<span class="tutor-fs-6 tutor-fw-bold">
587	<?php echo esc_html( $reply->comment_author ); ?>
588	</span>
589	<span class="tutor-fs-7 tutor-ml-0 tutor-ml-sm-10">
590	<?php echo esc_html( human_time_diff( strtotime( $reply->comment_date ), tutor_time() ) . __( ' ago', 'tutor' ) ); ?>
591	</span>
592	</div>
593	<div class="tutor-comment-text tutor-fs-6 tutor-mt-4">
594	<?php echo esc_html( $reply->comment_content ); ?>
595	</div>
596	</div>
597	</div>
598	</div>
599	<?php
600	$html = ob_get_clean();
601	wp_send_json_success( array( 'html' => $html ) );
602	}
603
604	/**
605	* Get comments
606	*
607	* @since 2.0.6
608	* @see Checkout arguments details: https://developer.wordpress.org/reference/classes/wp_comment_query/__construct/
609	*
610	* @param array $args arguments.
611	* @return mixed based on arguments
612	*/
613	public static function get_comments( array $args ) {
614	$comments = get_comments( $args );
615	return $comments;
616	}
617
618	/**
619	* Create comment
620	*
621	* @since 1.0.0
622	*
623	* @param array $request request.
624	* @return mixed comment id on success, false on failure
625	*/
626	public static function create_comment( array $request ) {
627	$current_user = wp_get_current_user();
628	$default_data = array(
629	'comment_content' => '',
630	'comment_post_ID' => '',
631	'comment_parent' => '',
632	'user_id' => $current_user->ID,
633	'comment_author' => $current_user->user_login,
634	'comment_author_email' => $current_user->user_email,
635	'comment_author_url' => $current_user->user_url,
636	'comment_agent' => 'Tutor',
637	);
638	$comment_data = wp_parse_args( $request, $default_data );
639	return wp_insert_comment( $comment_data );
640	}
641
642	}
643
644
645