tutor / classes / Course.php

Course.php in Tutor LMS – eLearning and online course solution 3.9.2, at classes/Course.php

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1	<?php
2	/**
3	* Manage Course Related Logic
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 stdClass;
18	use TUTOR\Input;
19	use Tutor\Ecommerce\Tax;
20	use Tutor\Models\QuizModel;
21	use Tutor\Helpers\HttpHelper;
22	use Tutor\Models\CourseModel;
23	use Tutor\Ecommerce\Ecommerce;
24	use Tutor\Traits\JsonResponse;
25	use Tutor\Helpers\ValidationHelper;
26	use TutorPro\CourseBundle\Models\BundleModel;
27
28	/**
29	* Course Class
30	*
31	* @since 1.0.0
32	*/
33	class Course extends Tutor_Base {
34	use JsonResponse;
35
36	/**
37	* Course Price type
38	*
39	* @since 3.0.0
40	*
41	* @var string
42	*/
43	const PRICE_TYPE_FREE = 'free';
44	const PRICE_TYPE_PAID = 'paid';
45	const PRICE_TYPE_SUBSCRIPTION = 'subscription';
46
47	/**
48	* Course price and sale price
49	*
50	* @since 3.0.0
51	*/
52	const COURSE_PRICE_TYPE_META = '_tutor_course_price_type';
53	const COURSE_PRICE_META = 'tutor_course_price';
54	const COURSE_SALE_PRICE_META = 'tutor_course_sale_price';
55	const COURSE_SELLING_OPTION_META = 'tutor_course_selling_option';
56	const COURSE_PRODUCT_ID_META = '_tutor_course_product_id';
57
58	/**
59	* Selling option constants
60	*
61	* @since 3.0.0
62	*/
63	const SELLING_OPTION_ONE_TIME = 'one_time';
64	const SELLING_OPTION_SUBSCRIPTION = 'subscription';
65	const SELLING_OPTION_BOTH = 'both'; // onetime and subscription.
66	const SELLING_OPTION_MEMBERSHIP = 'membership';
67	const SELLING_OPTION_ALL = 'all';
68
69	/**
70	* Tax collection settings meta
71	*
72	* @since 3.7.0
73	*/
74	const TAX_ON_SINGLE_META = 'tutor_tax_on_single';
75	const TAX_ON_SUBSCRIPTION_META = 'tutor_tax_on_subscription';
76
77	/**
78	* Additional data meta
79	*
80	* @since 3.6.0
81	*/
82	const COURSE_BENEFITS_META = '_tutor_course_benefits';
83	const COURSE_REQUIREMENTS_META = '_tutor_course_requirements';
84	const COURSE_TARGET_AUDIENCE_META = '_tutor_course_target_audience';
85	const COURSE_MATERIAL_INCLUDE_META = '_tutor_course_material_includes';
86	const COURSE_DURATION_META = '_course_duration';
87
88	/**
89	* Course settings meta
90	*
91	* @since 3.6.0
92	*/
93	const COURSE_ENABLE_QA_META = '_tutor_enable_qa';
94	const PUBLIC_COURSE_META = '_tutor_is_public_course';
95	const COURSE_SETTINGS_META = '_tutor_course_settings';
96	const COURSE_LEVEL_META = '_tutor_course_level';
97
98
99	/**
100	* Additional course meta info
101	*
102	* @var array
103	*/
104	private $additional_meta = array(
105	'_tutor_enable_qa',
106	'_tutor_is_public_course',
107	);
108
109	/**
110	* Constructor
111	*
112	* @since 1.0.0
113	* @since 3.0.0 $register_hooks param added to reuse this class.
114	*
115	* @param bool $register_hooks register hooks.
116	*
117	* @return void
118	*/
119	public function __construct( $register_hooks = true ) {
120	parent::__construct();
121
122	if ( ! $register_hooks ) {
123	return;
124	}
125
126	add_action( 'save_post_' . $this->course_post_type, array( $this, 'save_course_meta' ), 10, 2 );
127
128	add_action( 'wp_ajax_tutor_save_topic', array( $this, 'tutor_save_topic' ) );
129	add_action( 'wp_ajax_tutor_delete_topic', array( $this, 'tutor_delete_topic' ) );
130
131	/**
132	* Frontend Action
133	*/
134	add_action( 'template_redirect', array( $this, 'enroll_now' ) );
135	add_action( 'init', array( $this, 'mark_course_complete' ) );
136
137	/**
138	* Frontend Dashboard
139	*/
140	add_action( 'wp_ajax_tutor_delete_dashboard_course', array( $this, 'tutor_delete_dashboard_course' ) );
141
142	/**
143	* Gutenberg author support
144	*/
145	add_filter( 'wp_insert_post_data', array( $this, 'tutor_add_gutenberg_author' ), 99, 2 );
146
147	/**
148	* Do Stuff for the course save from frontend
149	*/
150	add_action( 'save_tutor_course', array( $this, 'attach_product_with_course' ), 10, 2 );
151
152	/**
153	* Add course level to course settings
154	*
155	* @since v.1.4.1
156	*/
157	add_filter( 'tutor_course_settings_tabs', array( $this, 'add_course_level_to_settings' ) );
158
159	/**
160	* Enable Disable Course Details Page Feature
161	*
162	* @since v.1.4.8
163	*/
164	$this->course_elements_enable_disable();
165
166	/**
167	* Check if course starting, set meta if starting
168	*
169	* @since v.1.4.8
170	*/
171	add_action( 'tutor_lesson_load_before', array( $this, 'tutor_lesson_load_before' ) );
172
173	/**
174	* Filter product in shop page
175	*
176	* @since v.1.4.9
177	*/
178	$this->filter_product_in_shop_page();
179
180	/**
181	* Remove the course price if enrolled
182	*
183	* @since 1.5.8
184	*/
185	add_filter( 'tutor_course_price', array( $this, 'remove_price_if_enrolled' ) );
186
187	/**
188	* Remove course complete button if course completion is strict mode
189	*
190	* @since v.1.6.1
191	*/
192	add_filter( 'tutor_course/single/complete_form', array( $this, 'tutor_lms_hide_course_complete_btn' ) );
193	add_filter( 'get_gradebook_generate_form_html', array( $this, 'get_generate_greadbook' ) );
194
195	/**
196	* Add social share content in header
197	*
198	* @since v.1.6.3
199	*/
200	add_action( 'wp_head', array( $this, 'social_share_content' ) );
201
202	/**
203	* Delete course data after deleted course
204	*
205	* @since v.1.6.6
206	*/
207	add_action( 'deleted_post', array( new CourseModel(), 'delete_course_data' ) );
208
209	/**
210	* Delete course data after deleted course
211	*
212	* @since v.1.8.2
213	*/
214	add_action( 'before_delete_post', array( $this, 'delete_associated_enrollment' ) );
215
216	/**
217	* Show only own uploads in media library if user is instructor
218	*
219	* @since v1.8.9
220	*/
221	add_filter( 'posts_where', array( $this, 'restrict_media' ) );
222
223	/**
224	* Restrict new enrol/purchase button if course member limit reached
225	*
226	* @since v1.9.0
227	*/
228	add_filter( 'tutor_course_restrict_new_entry', array( $this, 'restrict_new_student_entry' ) );
229
230	/**
231	* Reset course progress on retake
232	*
233	* @since v1.9.5
234	*/
235	add_action( 'wp_ajax_tutor_reset_course_progress', array( $this, 'tutor_reset_course_progress' ) );
236
237	/**
238	* Popup for review
239	*
240	* @since v1.9.7
241	*/
242	add_action( 'wp_footer', array( $this, 'popup_review_form' ) );
243	add_action( 'wp_ajax_tutor_clear_review_popup_data', array( $this, 'clear_review_popup_data' ) );
244
245	/**
246	* Do enroll after login if guest take enroll attempt
247	*
248	* @since 1.9.8
249	*/
250	add_action( 'tutor_do_enroll_after_login_if_attempt', array( $this, 'enroll_after_login_if_attempt' ), 10, 2 );
251
252	add_action( 'wp_ajax_tutor_update_course_content_order', array( $this, 'tutor_update_course_content_order' ) );
253
254	add_action( 'wp_ajax_tutor_get_wc_product', array( $this, 'get_wc_product' ) );
255	add_action( 'wp_ajax_tutor_get_wc_products', array( $this, 'get_wc_products' ) );
256
257	add_action( 'wp_ajax_tutor_course_enrollment', array( $this, 'course_enrollment' ) );
258
259	/**
260	* After trash a course redirect to course list page
261	*
262	* @since 2.1.7
263	*/
264	add_action( 'trashed_post', __CLASS__ . '::redirect_to_course_list_page' );
265
266	add_filter( 'tutor_enroll_required_login_class', array( $this, 'add_enroll_required_login_class' ) );
267
268	/**
269	* Remove wp trash button if instructor settings is disabled
270	*
271	* @since 2.7.3
272	*/
273	add_action( 'tutor_option_save_after', array( $this, 'disable_course_trash_instructor' ) );
274
275	/**
276	* New course builder
277	*
278	* @since 3.0.0
279	*/
280	add_action( 'template_redirect', array( $this, 'load_course_builder' ) );
281	add_action( 'tutor_before_course_builder_load', array( $this, 'enqueue_course_builder_assets' ) );
282	add_filter( 'tutor_localize_data', array( $this, 'localize_course_builder_data' ) );
283
284	/**
285	* Ajax list
286	*
287	* @since 3.0.0
288	*/
289	add_action( 'wp_ajax_tutor_create_new_draft_course', array( $this, 'ajax_create_new_draft_course' ) );
290	add_action( 'wp_ajax_tutor_course_list', array( $this, 'ajax_course_list' ) );
291	add_action( 'wp_ajax_tutor_create_course', array( $this, 'ajax_create_course' ) );
292	add_action( 'wp_ajax_tutor_course_details', array( $this, 'ajax_course_details' ) );
293	add_action( 'wp_ajax_tutor_course_contents', array( $this, 'ajax_course_contents' ) );
294	add_action( 'wp_ajax_tutor_update_course', array( $this, 'ajax_update_course' ) );
295	add_action( 'wp_ajax_tutor_unlink_page_builder', array( $this, 'ajax_unlink_page_builder' ) );
296
297	add_filter( 'tutor_user_list_access', array( $this, 'user_list_access_for_instructor' ) );
298	add_filter( 'tutor_user_list_args', array( $this, 'user_list_args_for_instructor' ) );
299
300	add_filter( 'template_include', array( $this, 'handle_password_protected' ) );
301	add_action( 'login_form_postpass', array( $this, 'handle_password_submit' ) );
302	add_filter( 'the_preview', array( $this, 'handle_schedule_courses' ) );
303	}
304
305	/**
306	* Handle schedule courses preview for instructors.
307	*
308	* @since 3.5.0
309	*
310	* @param \WP_Post $content the preview post content.
311	*
312	* @return \WP_Post
313	*/
314	public function handle_schedule_courses( $content ) {
315	global $wp_query;
316	$course_coming_soon_enabled = (int) get_post_meta( $content->ID, '_tutor_course_enable_coming_soon', true );
317	$is_instructor = tutor_utils()->is_instructor_of_this_course( get_current_user_id(), $content->ID, true );
318	if ( ! CourseModel::get_post_types( $content ) \|\| current_user_can( 'administrator' ) \|\| $is_instructor \|\| $course_coming_soon_enabled ) {
319	return $content;
320	}
321
322	$wp_query->set_404();
323	status_header( 404 );
324	nocache_headers();
325	return $content;
326	}
327
328	/**
329	* Handle password protected course and bundle form submission.
330	*
331	* @since 3.2.1
332	*
333	* @return void
334	*/
335	public function handle_password_submit() {
336	if ( Input::has( 'post_password' ) && Input::has( 'course_id' ) ) {
337	$course_id = Input::post( 'course_id', 0, Input::TYPE_NUMERIC );
338	$password_required = post_password_required( $course_id );
339	if ( $password_required ) {
340	set_transient( 'tutor_post_password_error', __( 'Invalid password', 'tutor' ) );
341	}
342	}
343	}
344
345	/**
346	* Handle password protected course/bundle.
347	*
348	* @since 3.0.0
349	*
350	* @param string $template template path.
351	*
352	* @return string template path.
353	*/
354	public function handle_password_protected( $template ) {
355	if ( is_single() ) {
356	$current_post_type = get_post_type( get_the_ID() );
357	$post_types = array( tutor()->course_post_type, tutor()->bundle_post_type );
358	if ( in_array( $current_post_type, $post_types, true ) && post_password_required() ) {
359	remove_all_filters( 'template_include' );
360	return tutor()->path . '/templates/single/password-protected.php';
361	}
362	}
363
364	return $template;
365	}
366
367	/**
368	* Remove move to trash button on WordPress editor for instructor.
369	*
370	* @since 2.7.3
371	*
372	* @return void
373	*/
374	public function disable_course_trash_instructor() {
375	$can_trash_post = tutor_utils()->get_option( 'instructor_can_delete_course' );
376	$role = get_role( tutor()->instructor_role );
377	if ( ! $can_trash_post ) {
378	$role->remove_cap( 'delete_tutor_courses' );
379	$role->remove_cap( 'delete_tutor_course' );
380	} else {
381	$role->add_cap( 'delete_tutor_courses' );
382	$role->add_cap( 'delete_tutor_course' );
383	}
384	}
385
386	/**
387	* Check if the video source type is valid
388	*
389	* @since 3.0.0
390	*
391	* @param string $source_type source type.
392	*
393	* @return boolean
394	*/
395	private function is_valid_video_source_type( string $source_type ): bool {
396	$supported_types = tutor_utils()->get_option( 'supported_video_sources', array() );
397	if ( is_string( $supported_types ) ) {
398	$supported_types = array( $supported_types );
399	}
400
401	return in_array( $source_type, $supported_types, true );
402	}
403
404	/**
405	* Get course selling options.
406	*
407	* @since 3.0.0
408	*
409	* @return array
410	*/
411	public static function get_selling_options() {
412	return array(
413	self::SELLING_OPTION_ONE_TIME,
414	self::SELLING_OPTION_SUBSCRIPTION,
415	self::SELLING_OPTION_BOTH,
416	self::SELLING_OPTION_MEMBERSHIP,
417	self::SELLING_OPTION_ALL,
418	);
419	}
420
421	/**
422	* Get course selling option
423	*
424	* @since 3.0.0
425	*
426	* @param int $course_id course id.
427	*
428	* @return string
429	*/
430	public static function get_selling_option( $course_id ) {
431	return get_post_meta( $course_id, self::COURSE_SELLING_OPTION_META, true );
432	}
433
434	/**
435	* Validate video source
436	*
437	* @since 3.0.0
438	*
439	* @param array $params array of params.
440	* @param array $errors array of errors.
441	*
442	* @return void
443	*/
444	public function validate_video_source( $params, &$errors ) {
445	if ( isset( $params['video'] ) ) {
446	$video_source_type = isset( $params['video']['source'] ) ? $params['video']['source'] : '';
447	if ( tutor_is_rest() ) {
448	$video_source_type = isset( $params['video']['source_type'] ) ? $params['video']['source_type'] : '';
449	}
450
451	if ( '' === $video_source_type ) {
452	$errors['video_source'] = __( 'Video source is required', 'tutor' );
453	} elseif ( ! $this->is_valid_video_source_type( $video_source_type ) ) {
454	$errors['video_source'] = __( 'Invalid video source', 'tutor' );
455	}
456	}
457	}
458
459	/**
460	* Validate scheduled courses
461	*
462	* @since 3.3.0
463	*
464	* @param array $params array of params.
465	* @param array $errors array of errors.
466	*
467	* @return void
468	*/
469	public function validate_scheduled_course( $params, &$errors ) {
470	if ( isset( $params['post_status'] ) && isset( $params['course_settings'] ) ) {
471	if ( 'future' !== $params['post_status'] ) {
472	return;
473	}
474
475	$course_settings = $params['course_settings'];
476
477	if ( $course_settings['course_enrollment_period'] && 'no' === $course_settings['course_enrollment_period'] ) {
478	return;
479	}
480
481	if ( isset( $course_settings['enrollment_starts_at'] ) && ! empty( $course_settings['enrollment_starts_at'] ) ) {
482	$enrollment_start = strtotime( $course_settings['enrollment_starts_at'] );
483	$scheduled_date = strtotime( $params['post_date_gmt'] );
484
485	if ( $enrollment_start < $scheduled_date ) {
486	$errors['scheduled_course'] = __( 'The enrollment start date cannot be earlier than the course start date', 'tutor' );
487	}
488	}
489	}
490	}
491
492	/**
493	* Prepare course categories & tags
494	*
495	* @since 3.0.0
496	*
497	* @param array $params post params.
498	* @param array $errors array of errors.
499	*
500	* @return void
501	*/
502	public function prepare_course_cats_tags( &$params, &$errors ) {
503	if ( isset( $params['course_categories'] ) ) {
504	if ( ! is_array( $params['course_categories'] ) \|\| empty( $params['course_categories'] ) ) {
505	$errors['course_categories'] = __( 'Invalid course categories', 'tutor' );
506	} else {
507	$params['course_categories'] = $params['course_categories'];
508	}
509	}
510
511	if ( isset( $params['course_tags'] ) ) {
512	if ( ! is_array( $params['course_tags'] ) \|\| empty( $params['course_tags'] ) ) {
513	$errors['course_tags'] = __( 'Invalid course tags', 'tutor' );
514	} else {
515	$params['course_tags'] = $params['course_tags'];
516	}
517	}
518	}
519
520	/**
521	* Setup course categories and tags.
522	*
523	* @since 3.0.0
524	*
525	* @param int $post_id Post ID.
526	* @param array $params Array of params.
527	*
528	* @return void
529	*/
530	public function setup_course_categories_tags( $post_id, $params ) {
531	if ( isset( $params['course_categories'] ) && is_array( $params['course_categories'] ) ) {
532	$valid_category_ids = ValidationHelper::validate_term_ids(
533	$params['course_categories'],
534	CourseModel::COURSE_CATEGORY
535	);
536	wp_set_object_terms( $post_id, $valid_category_ids, CourseModel::COURSE_CATEGORY );
537	} else {
538	wp_set_object_terms( $post_id, array(), CourseModel::COURSE_CATEGORY );
539	}
540
541	if ( isset( $params['course_tags'] ) && is_array( $params['course_tags'] ) ) {
542	$valid_tag_ids = ValidationHelper::validate_term_ids(
543	$params['course_tags'],
544	CourseModel::COURSE_TAG
545	);
546	wp_set_object_terms( $post_id, $valid_tag_ids, CourseModel::COURSE_TAG );
547	} else {
548	wp_set_object_terms( $post_id, array(), CourseModel::COURSE_TAG );
549	}
550	}
551
552	/**
553	* Validate price for course create
554	*
555	* @since 3.0.0
556	*
557	* @param array $params array of params.
558	* @param array $errors array of errors.
559	*
560	* @return void
561	*/
562	public function validate_price( $params, &$errors ) {
563	if ( isset( $params['pricing'] ) ) {
564	$type = $params['pricing']['type'] ?? '';
565
566	if ( '' === $type \|\| ! in_array( $type, array( self::PRICE_TYPE_FREE, self::PRICE_TYPE_PAID ), true ) ) {
567	$errors['pricing'] = __( 'Invalid price type', 'tutor' );
568	}
569
570	if ( self::PRICE_TYPE_PAID === $type ) {
571	$monetize_by = tutor_utils()->get_option( 'monetize_by' );
572	if ( 'wc' === $monetize_by ) {
573	$product_id = (int) isset( $params['pricing']['product_id'] ) ? $params['pricing']['product_id'] : 0;
574	// $product_id = 0 then new WC product will be created.
575	if ( $product_id ) {
576	$product = wc_get_product( $product_id );
577	if ( is_a( $product, 'WC_Product' ) ) {
578	$is_linked_with_course = tutor_utils()->product_belongs_with_course( $product_id );
579	if ( $is_linked_with_course ) {
580	$errors['pricing'] = __( 'Product already linked with course', 'tutor' );
581	}
582	}
583	}
584	}
585	}
586	}
587	}
588
589	/**
590	* Validate price
591	*
592	* @since 3.0.0
593	*
594	* @param array $params array of params.
595	* @param array $errors array of errors.
596	* @param int $course_id course id.
597	*
598	* @return void
599	*/
600	public function validate_price_for_update( $params, &$errors, $course_id ) {
601	if ( isset( $params['pricing'] ) ) {
602	$type = $params['pricing']['type'] ?? '';
603
604	if ( '' === $type \|\| ! in_array( $type, array( self::PRICE_TYPE_FREE, self::PRICE_TYPE_PAID, self::PRICE_TYPE_SUBSCRIPTION ), true ) ) {
605	$errors['pricing'] = __( 'Invalid price type', 'tutor' );
606	}
607
608	if ( self::PRICE_TYPE_PAID === $type ) {
609	$monetize_by = tutor_utils()->get_option( 'monetize_by' );
610	if ( 'wc' === $monetize_by ) {
611	$course_product_id = tutor_utils()->get_course_product_id( $course_id );
612	$product_id = isset( $params['pricing']['product_id'] ) ? (int) $params['pricing']['product_id'] : 0;
613
614	if ( $product_id ) {
615	$product = wc_get_product( $product_id );
616	if ( is_a( $product, 'WC_Product' ) ) {
617	if ( $course_product_id !== $product_id ) {
618	$is_linked_with_course = tutor_utils()->product_belongs_with_course( $product_id );
619	if ( $is_linked_with_course ) {
620	$errors['pricing'] = __( 'Product already linked with course', 'tutor' );
621	}
622	}
623	} else {
624	$errors['pricing'] = __( 'Invalid product', 'tutor' );
625	}
626	} else {
627	/**
628	* If user does not select WC product
629	* Then automatic WC product will be create name with course title.
630	*/
631	if ( ! isset( $params['course_price'] ) \|\| ! floatval( $params['course_price'] ) ) {
632	$errors['pricing'] = __( 'Price is required', 'tutor' );
633	}
634	}
635	}
636	}
637	}
638	}
639
640	/**
641	* Prepare course meta data for update
642	*
643	* @param array $params params.
644	*
645	* @return void
646	*/
647	public function prepare_create_post_meta( $params ) {
648	$additional_content = isset( $params['additional_content'] ) ? $params['additional_content'] : array();
649
650	$course_benefits = isset( $additional_content['course_benefits'] ) ? $additional_content['course_benefits'] : '';
651
652	$course_target_audience = isset( $additional_content['course_target_audience'] ) ? $additional_content['course_target_audience'] : '';
653
654	$course_duration = isset( $additional_content['course_duration'] ) ? array(
655	'hours' => $additional_content['course_duration']['hours'] ?? '',
656	'minutes' => $additional_content['course_duration']['minutes'] ?? '',
657	) : array();
658
659	$course_materials = isset( $additional_content['course_material_includes'] ) ? $additional_content['course_material_includes'] : '';
660
661	$course_requirements = isset( $additional_content['course_requirements'] ) ? $additional_content['course_requirements'] : '';
662
663	$pricing = isset( $params['pricing'] ) ? array(
664	'type' => $params['pricing']['type'] ?? self::PRICE_TYPE_FREE,
665	'product_id' => (int) $params['pricing']['product_id'] ?? -1,
666	) : array(
667	'type' => self::PRICE_TYPE_FREE,
668	'product_id' => -1,
669	);
670
671	// Setup global $_POST array.
672	$_POST['_tutor_course_additional_data_edit'] = true;
673
674	$_POST['tutor_course_price_type'] = $pricing['type'];
675	$_POST['course_duration'] = $course_duration;
676	$_POST['tutor_course_price_type'] = $pricing['type'];
677	$_POST['_tutor_course_product_id'] = $pricing['product_id'];
678	$_POST['_tutor_course_level'] = $params['course_level'];
679	$_POST['course_benefits'] = $course_benefits;
680	$_POST['course_requirements'] = $course_requirements;
681	$_POST['course_target_audience'] = $course_target_audience;
682	$_POST['course_material_includes'] = $course_materials;
683
684	if ( isset( $params['enable_qna'] ) && 'yes' === $params['enable_qna'] ) {
685	$_POST['_tutor_enable_qa'] = 'yes';
686	}
687
688	if ( isset( $params['_tutor_is_public_course'] ) && 'yes' === $params['_tutor_is_public_course'] ) {
689	$_POST['_tutor_is_public_course'] = 'yes';
690	}
691
692	// Set course price.
693	if ( -1 !== $pricing['product_id'] ) {
694	$product = wc_get_product( $pricing['product_id'] );
695	if ( is_a( $product, 'WC_Product' ) ) {
696	$regular_price = $product->get_regular_price();
697	$sale_price = $product->get_sale_price();
698
699	$_POST['course_price'] = $regular_price;
700	$_POST['course_sale_price'] = $sale_price;
701	}
702	}
703	}
704
705	/**
706	* Prepare course meta data for update
707	*
708	* @since 3.0.0
709	*
710	* @param array $params params.
711	*
712	* @throws \Exception Throw new exception.
713	*
714	* @return mixed
715	*/
716	public function prepare_update_post_meta( $params ) {
717	$post_id = (int) $params['ID'];
718
719	$additional_content = isset( $params['additional_content'] ) ? $params['additional_content'] : array();
720
721	if ( ! empty( $additional_content ) ) {
722
723	$course_benefits = isset( $additional_content['course_benefits'] ) ? $additional_content['course_benefits'] : '';
724
725	$course_target_audience = isset( $additional_content['course_target_audience'] ) ? $additional_content['course_target_audience'] : '';
726
727	$course_duration = isset( $additional_content['course_duration'] ) ? array(
728	'hours' => $additional_content['course_duration']['hours'] ?? '',
729	'minutes' => $additional_content['course_duration']['minutes'] ?? '',
730	) : array();
731
732	$course_materials = isset( $additional_content['course_material_includes'] ) ? $additional_content['course_material_includes'] : '';
733
734	$course_requirements = isset( $additional_content['course_requirements'] ) ? $additional_content['course_requirements'] : '';
735
736	if ( '' !== $course_benefits ) {
737	update_post_meta( $post_id, '_tutor_course_benefits', $course_benefits );
738	}
739
740	if ( '' !== $course_requirements ) {
741	update_post_meta( $post_id, '_tutor_course_requirements', $course_requirements );
742	}
743
744	if ( '' !== $course_target_audience ) {
745	update_post_meta( $post_id, '_tutor_course_target_audience', $course_target_audience );
746	}
747
748	if ( '' !== $course_materials ) {
749	update_post_meta( $post_id, '_tutor_course_material_includes', $course_materials );
750	}
751
752	if ( ! empty( $course_duration ) ) {
753	update_post_meta( $post_id, '_course_duration', $course_duration );
754	}
755	}
756
757	if ( isset( $params['pricing'] ) && ! empty( $params['pricing'] ) ) {
758	try {
759	if ( isset( $params['pricing']['type'] ) ) {
760	update_post_meta( $post_id, self::COURSE_PRICE_TYPE_META, $params['pricing']['type'] );
761	}
762	} catch ( \Throwable $th ) {
763	throw new \Exception( $th->getMessage() );
764	}
765	}
766
767	update_post_meta( $post_id, '_tutor_enable_qa', $params['enable_qna'] ?? 'yes' );
768	update_post_meta( $post_id, '_tutor_is_public_course', $params['is_public_course'] ?? 'no' );
769	update_post_meta( $post_id, '_tutor_course_level', $params['course_level'] );
770
771	/**
772	* Save tax collection settings
773	*
774	* @since 3.7.0
775	*/
776	if ( isset( $params['tax_on_single'] ) ) {
777	update_post_meta( $post_id, self::TAX_ON_SINGLE_META, $params['tax_on_single'] );
778	}
779
780	if ( isset( $params['tax_on_subscription'] ) ) {
781	update_post_meta( $post_id, self::TAX_ON_SUBSCRIPTION_META, $params['tax_on_subscription'] );
782	}
783
784	do_action( 'tutor_after_prepare_update_post_meta', $post_id, $params );
785	}
786
787	/**
788	* Prepare course settings meta
789	*
790	* @since 3.0.0
791	*
792	* @param array $params params.
793	*
794	* @return void
795	*/
796	public function prepare_course_settings( $params ) {
797	if ( isset( $params['course_settings'] ) ) {
798	$_POST['_tutor_course_settings'] = $params['course_settings'];
799	}
800	}
801
802	/**
803	* Check access before course builder ajax request.
804	*
805	* @since 3.0.0
806	*
807	* @param int $course_id course id.
808	*
809	* @return void
810	*/
811	public function check_access( $course_id = null ) {
812	$has_access = false;
813
814	if ( $course_id ) {
815	$has_access = tutor_utils()->can_user_edit_course( get_current_user_id(), $course_id );
816	} else {
817	$has_access = User::is_admin() \|\| User::is_instructor();
818	}
819
820	if ( ! $has_access ) {
821	$this->json_response(
822	tutor_utils()->error_message( HttpHelper::STATUS_UNAUTHORIZED ),
823	null,
824	HttpHelper::STATUS_UNAUTHORIZED
825	);
826	}
827	}
828
829	/**
830	* Validate request inputs.
831	*
832	* @param array $params input params.
833	* @param array $exclude exclude key from rules.
834	*
835	* @return object
836	*/
837	public function validate_inputs( $params, $exclude = array() ) {
838	$status_str = implode( ',', CourseModel::get_status_list() );
839	$rules = array(
840	'course_id' => 'required\|numeric',
841	'post_title' => 'required',
842	'post_author' => 'user_exists',
843	'post_status' => "required\|match_string:{$status_str}",
844	'enable_qna' => 'if_input\|match_string:yes,no',
845	'is_public_course' => 'if_input\|match_string:yes,no',
846	);
847
848	foreach ( $exclude as $key ) {
849	if ( isset( $rules[ $key ] ) ) {
850	unset( $rules[ $key ] );
851	}
852	}
853
854	return ValidationHelper::validate( $rules, $params );
855	}
856
857	/**
858	* Create new draft course
859	*
860	* @since 3.0.0
861	*
862	* @return void JSON response
863	*/
864	public function ajax_create_new_draft_course() {
865	tutor_utils()->check_nonce();
866
867	$this->check_access();
868
869	$course_id = wp_insert_post(
870	array(
871	'post_title' => __( 'New Course', 'tutor' ),
872	'post_type' => tutor()->course_post_type,
873	'post_status' => 'draft',
874	'post_name' => 'new-course',
875	)
876	);
877
878	if ( is_wp_error( $course_id ) ) {
879	$this->json_response( $course_id->get_error_message(), null, HttpHelper::STATUS_INTERNAL_SERVER_ERROR );
880	}
881
882	update_post_meta( $course_id, self::COURSE_PRICE_TYPE_META, self::PRICE_TYPE_FREE );
883
884	$link = admin_url( 'admin.php?page=create-course' );
885	if ( Input::post( 'from_dashboard', false, Input::TYPE_BOOL ) ) {
886	$link = tutor_utils()->tutor_dashboard_url( 'create-course' );
887	}
888
889	$link = add_query_arg( array( 'course_id' => $course_id ), $link );
890
891	do_action( 'tutor_draft_course_created', $course_id );
892
893	$this->json_response(
894	__( 'Draft course created', 'tutor' ),
895	$link,
896	HttpHelper::STATUS_CREATED
897	);
898	}
899
900	/**
901	* Get course list
902	*
903	* @since 3.0.0
904	*
905	* @since 3.2.0
906	*
907	* Refactor the arguments & response as per new design
908	*
909	* @return void
910	*/
911	public function ajax_course_list() {
912	$this->check_access();
913
914	$limit = Input::post( 'limit', 10, Input::TYPE_INT );
915	$offset = Input::post( 'offset', 0, Input::TYPE_INT );
916	$search_term = '';
917	$post_status = Input::post( 'post_status', null );
918
919	$filter = json_decode( wp_unslash( $_POST['filter'] ) ); //phpcs:ignore --sanitized already
920	if ( ! empty( $filter ) && property_exists( $filter, 'search' ) ) {
921	$search_term = Input::sanitize( $filter->search );
922	}
923
924	$args = array(
925	'post_status' => is_null( $post_status ) ? 'publish' : $post_status,
926	'posts_per_page' => $limit,
927	'offset' => $offset,
928	's' => $search_term,
929	);
930
931	$exclude = Input::post( 'exclude', array(), Input::TYPE_ARRAY );
932	if ( count( $exclude ) ) {
933	$exclude = array_filter(
934	$exclude,
935	function ( $id ) {
936	return is_numeric( $id );
937	}
938	);
939	$args['post__not_in'] = $exclude;
940	}
941
942	$courses = CourseModel::get_courses_by_args( $args );
943
944	$response = array(
945	'results' => array(),
946	'total_items' => 0,
947	);
948
949	$response['total_items'] = is_a( $courses, 'WP_Query' ) ? $courses->found_posts : 0;
950
951	if ( is_a( $courses, 'WP_Query' ) && $courses->have_posts() ) {
952	$courses = $courses->get_posts();
953	foreach ( $courses as $course ) {
954	$response['results'][] = self::get_mini_info( $course );
955	}
956	}
957
958	$this->json_response(
959	__( 'Course list retrieved successfully!', 'tutor' ),
960	$response
961	);
962	}
963
964	/**
965	* Create course by ajax request.
966	*
967	* @since 3.0.0
968	*
969	* @return void
970	*/
971	public function ajax_create_course() {
972	tutor_utils()->check_nonce();
973
974	$this->check_access();
975
976	$params = Input::sanitize_array(
977	//phpcs:ignore WordPress.Security.NonceVerification.Missing
978	$_POST,
979	array(
980	'post_content' => 'wp_kses_post',
981	'course_material_includes' => 'sanitize_textarea_field',
982	)
983	);
984
985	$params['post_type'] = tutor()->course_post_type;
986
987	// Validate inputs.
988	$errors = array();
989	$validation = $this->validate_inputs( $params, array( 'course_id' ) );
990	if ( ! $validation->success ) {
991	$errors = $validation->errors;
992	}
993
994	if ( User::is_instructor() ) {
995	$params['post_author'] = get_current_user_id();
996	}
997
998	// Validate video source if user set video.
999	$this->validate_video_source( $params, $errors );
1000
1001	// Validate WC product.
1002	$this->validate_price( $params, $errors );
1003
1004	// Set course categories and tags.
1005	$this->prepare_course_cats_tags( $params, $errors );
1006	$this->setup_course_price( $params );
1007
1008	if ( ! empty( $errors ) ) {
1009	$this->json_response( __( 'Invalid input', 'tutor' ), $errors, HttpHelper::STATUS_UNPROCESSABLE_ENTITY );
1010	}
1011
1012	$this->prepare_course_settings( $params );
1013
1014	try {
1015	$this->prepare_create_post_meta( $params );
1016	} catch ( \Exception $e ) {
1017	$this->json_response( $e->getMessage(), null, HttpHelper::STATUS_INTERNAL_SERVER_ERROR );
1018	}
1019
1020	$course_id = wp_insert_post( $params );
1021	if ( is_wp_error( $course_id ) ) {
1022	$this->json_response( $course_id->get_error_message(), null, HttpHelper::STATUS_INTERNAL_SERVER_ERROR );
1023	}
1024
1025	// Set course cats & tags.
1026	$this->setup_course_categories_tags( $course_id, $params );
1027
1028	// Update course thumb.
1029	if ( isset( $params['thumbnail_id'] ) ) {
1030	set_post_thumbnail( $course_id, $params['thumbnail_id'] );
1031	}
1032
1033	$this->json_response(
1034	__( 'Course created successfully', 'tutor' ),
1035	$course_id,
1036	HttpHelper::STATUS_CREATED
1037	);
1038	}
1039
1040	/**
1041	* Setup course price
1042	*
1043	* @since 3.0.0
1044	*
1045	* @param array $params params.
1046	*
1047	* @return void
1048	*/
1049	public function setup_course_price( $params ) {
1050	if ( isset( $params['pricing'] )
1051	&& isset( $params['pricing']['product_id'] )
1052	&& is_numeric( $params['pricing']['product_id'] ) ) {
1053	$_POST['_tutor_course_product_id'] = $params['pricing']['product_id'];
1054	}
1055	}
1056
1057	/**
1058	* Update course by ajax request.
1059	*
1060	* @since 3.0.0
1061	*
1062	* @return void
1063	*/
1064	public function ajax_update_course() {
1065	tutor_utils()->check_nonce();
1066
1067	$params = Input::sanitize_array(
1068	//phpcs:ignore WordPress.Security.NonceVerification.Missing
1069	wp_slash( $_POST ),
1070	array(
1071	'post_content' => 'wp_kses_post',
1072	'course_benefits' => 'sanitize_textarea_field',
1073	'course_target_audience' => 'sanitize_textarea_field',
1074	'course_material_includes' => 'sanitize_textarea_field',
1075	'course_requirements' => 'sanitize_textarea_field',
1076	)
1077	);
1078
1079	$course_id = (int) $params['course_id'];
1080	$this->check_access( $course_id );
1081
1082	$errors = array();
1083	$validation = $this->validate_inputs( $params );
1084	if ( ! $validation->success ) {
1085	$errors = $validation->errors;
1086	}
1087
1088	// Validate video source if user set video.
1089	$this->validate_video_source( $params, $errors );
1090
1091	// Validate WC product.
1092	$this->validate_price_for_update( $params, $errors, $course_id );
1093
1094	// Set course categories and tags.
1095	$this->prepare_course_cats_tags( $params, $errors );
1096
1097	$this->prepare_course_settings( $params );
1098
1099	// Validate scheduled courses.
1100	$this->validate_scheduled_course( $params, $errors );
1101
1102	$this->setup_course_price( $params );
1103
1104	if ( ! empty( $errors ) ) {
1105	$this->json_response( __( 'Invalid input', 'tutor' ), $errors, HttpHelper::STATUS_UNPROCESSABLE_ENTITY );
1106	}
1107
1108	/**
1109	* Can trash a course when user is admin or option `instructor_can_delete_course` is turned on.
1110	*/
1111	if ( CourseModel::STATUS_TRASH === $params['post_status'] ) {
1112	if ( User::is_admin() \|\| tutor_utils()->get_option( 'instructor_can_delete_course', false ) ) {
1113	$params['post_status'] = CourseModel::STATUS_TRASH;
1114	} else {
1115	unset( $params['post_status'] );
1116	}
1117	}
1118
1119	/**
1120	* Can publish a course when user is admin or option `instructor_can_publish_course` is turned on.
1121	* If instructor_can_publish_course is turned off then course status will be pending.
1122	*/
1123	if ( CourseModel::STATUS_PUBLISH === $params['post_status'] ) {
1124	$is_instructor_allowed_to_publish = (bool) tutor_utils()->get_option( 'instructor_can_publish_course', false );
1125	if ( ! User::is_admin() && ! $is_instructor_allowed_to_publish ) {
1126	$params['post_status'] = CourseModel::STATUS_PENDING;
1127	}
1128	}
1129
1130	$is_error = apply_filters( 'tutor_is_error_before_course_update', false, $params );
1131	if ( is_wp_error( $is_error ) ) {
1132	$this->response_bad_request( $is_error->get_error_message() );
1133	}
1134
1135	$params['ID'] = $course_id;
1136	$update_id = wp_update_post( $params, true );
1137	if ( is_wp_error( $update_id ) ) {
1138	$this->json_response( $update_id->get_error_message(), null, HttpHelper::STATUS_INTERNAL_SERVER_ERROR );
1139	}
1140
1141	$this->setup_course_categories_tags( $update_id, $params );
1142	$this->prepare_update_post_meta( $params );
1143
1144	// Update course thumb.
1145	$thumbnail_id = Input::post( 'thumbnail_id', 0, Input::TYPE_INT );
1146	if ( $thumbnail_id ) {
1147	set_post_thumbnail( $update_id, $thumbnail_id );
1148	} else {
1149	delete_post_meta( $update_id, '_thumbnail_id' );
1150	}
1151
1152	$this->json_response(
1153	__( 'Course updated successfully.', 'tutor' ),
1154	$update_id,
1155	HttpHelper::STATUS_OK
1156	);
1157	}
1158
1159	/**
1160	* Unlink page builder from editor.
1161	*
1162	* @since 3.0.0
1163	*
1164	* @return void
1165	*/
1166	public function ajax_unlink_page_builder() {
1167	tutor_utils()->check_nonce();
1168
1169	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1170	$builder = Input::post( 'builder' );
1171	$this->check_access( $course_id );
1172
1173	if ( 'elementor' === $builder ) {
1174	delete_post_meta( $course_id, '_elementor_edit_mode' );
1175	} elseif ( 'droip' === $builder ) {
1176	delete_post_meta( $course_id, 'droip_editor_mode' );
1177	}
1178
1179	$this->json_response(
1180	__( 'Builder unlinked successfully.', 'tutor' ),
1181	$course_id,
1182	HttpHelper::STATUS_OK
1183	);
1184	}
1185
1186	/**
1187	* Get all course contents by course id.
1188	*
1189	* @since 3.0.0
1190	*
1191	* @param int $course_id course id.
1192	*
1193	* @return array
1194	*/
1195	public function get_course_contents( $course_id ) {
1196	$data = array();
1197	$topics = tutor_utils()->get_topics( $course_id );
1198
1199	if ( $topics->have_posts() ) {
1200	foreach ( $topics->get_posts() as $post ) {
1201	$current_topic = array(
1202	'id' => $post->ID,
1203	'title' => $post->post_title,
1204	'summary' => $post->post_content,
1205	'contents' => array(),
1206	);
1207
1208	$topic_contents = tutor_utils()->get_course_contents_by_topic( $post->ID, -1 );
1209
1210	if ( $topic_contents->have_posts() ) {
1211	foreach ( $topic_contents->get_posts() as $post ) {
1212	if ( tutor()->quiz_post_type === $post->post_type ) {
1213	$questions = tutor_utils()->get_questions_by_quiz( $post->ID );
1214	$post->total_question = is_array( $questions ) ? count( $questions ) : 0;
1215	}
1216
1217	array_push( $current_topic['contents'], $post );
1218	}
1219	}
1220
1221	$current_topic = apply_filters( 'tutor_filter_course_content', $current_topic );
1222
1223	array_push( $data, $current_topic );
1224	}
1225	}
1226
1227	return $data;
1228	}
1229
1230	/**
1231	* Get course contents
1232	*
1233	* @since 3.0.0
1234	*/
1235	public function ajax_course_contents() {
1236	tutor_utils()->check_nonce();
1237
1238	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1239
1240	$this->check_access( $course_id );
1241
1242	if ( tutor()->course_post_type !== get_post_type( $course_id ) ) {
1243	$errors['course_id'] = __( 'Invalid course id', 'tutor' );
1244	}
1245
1246	if ( ! empty( $errors ) ) {
1247	$this->json_response( __( 'Invalid input', 'tutor' ), $errors, HttpHelper::STATUS_UNPROCESSABLE_ENTITY );
1248	}
1249
1250	$contents = $this->get_course_contents( $course_id );
1251
1252	$this->json_response(
1253	__( 'Course contents fetched successfully', 'tutor' ),
1254	$contents
1255	);
1256	}
1257
1258	/**
1259	* Get course details by ID
1260	*
1261	* @since 3.0.0
1262	*
1263	* @return void
1264	*/
1265	public function ajax_course_details() {
1266	tutor_utils()->check_nonce();
1267
1268	$errors = array();
1269	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1270
1271	$this->check_access( $course_id );
1272
1273	if ( tutor()->course_post_type !== get_post_type( $course_id ) ) {
1274	$errors['course_id'] = __( 'Invalid course id', 'tutor' );
1275	}
1276
1277	if ( ! empty( $errors ) ) {
1278	$this->json_response( __( 'Invalid input', 'tutor' ), $errors, HttpHelper::STATUS_UNPROCESSABLE_ENTITY );
1279	}
1280
1281	$price_type = tutor_utils()->price_type( $course_id );
1282	$monetize_by = tutor_utils()->get_option( 'monetize_by' );
1283
1284	$product_name = '';
1285	$price = 0;
1286	$sale_price = 0;
1287	$product_id = tutor_utils()->get_course_product_id( $course_id );
1288
1289	if ( 'wc' === $monetize_by ) {
1290	$product = wc_get_product( $product_id );
1291	if ( $product ) {
1292	$product_name = $product->get_name();
1293	$price = $product->get_regular_price();
1294	$sale_price = $product->get_sale_price();
1295	}
1296	}
1297
1298	if ( 'tutor' === $monetize_by ) {
1299	$price = get_post_meta( $course_id, self::COURSE_PRICE_META, true );
1300	$sale_price = get_post_meta( $course_id, self::COURSE_SALE_PRICE_META, true );
1301	}
1302
1303	$course_pricing = array(
1304	'type' => $price_type,
1305	'product_id' => $product_id,
1306	'product_name' => $product_name,
1307	'price' => $price,
1308	'sale_price' => $sale_price,
1309	);
1310
1311	$video_intro = get_post_meta( $course_id, '_video', true );
1312	if ( $video_intro ) {
1313	$source = $video_intro['source'] ?? '';
1314	if ( 'html5' === $source ) {
1315	$poster_url = wp_get_attachment_url( $video['poster'] ?? 0 );
1316	$source_html5 = wp_get_attachment_url( $video['source_video_id'] ?? 0 );
1317	$video['poster_url'] = $poster_url;
1318	$video['source_html5'] = $source_html5;
1319	}
1320	}
1321
1322	$course = get_post( $course_id, ARRAY_A );
1323	if ( $course ) {
1324	$course['post_name'] = urldecode( $course['post_name'] );
1325	}
1326
1327	$editors = tutor_utils()->get_editor_list( $course_id );
1328
1329	$data = array(
1330	'editors' => array_values( $editors ),
1331	'editor_used' => tutor_utils()->get_editor_used( $course_id ),
1332	'preview_link' => get_preview_post_link( $course_id ),
1333	'post_author' => tutor_utils()->get_tutor_user( $course['post_author'] ),
1334	'course_categories' => wp_get_post_terms( $course_id, CourseModel::COURSE_CATEGORY ),
1335	'course_tags' => wp_get_post_terms( $course_id, CourseModel::COURSE_TAG ),
1336	'thumbnail_id' => get_post_meta( $course_id, '_thumbnail_id', true ),
1337	'thumbnail' => get_the_post_thumbnail_url( $course_id ),
1338
1339	'enable_qna' => get_post_meta( $course_id, '_tutor_enable_qa', true ),
1340	'is_public_course' => get_post_meta( $course_id, '_tutor_is_public_course', true ),
1341	'course_level' => get_post_meta( $course_id, '_tutor_course_level', true ),
1342	'video' => $video_intro,
1343	'course_duration' => get_post_meta( $course_id, '_course_duration', true ),
1344	'course_benefits' => get_post_meta( $course_id, '_tutor_course_benefits', true ),
1345	'course_requirements' => get_post_meta( $course_id, '_tutor_course_requirements', true ),
1346	'course_target_audience' => get_post_meta( $course_id, '_tutor_course_target_audience', true ),
1347	'course_material_includes' => get_post_meta( $course_id, '_tutor_course_material_includes', true ),
1348	'monetize_by' => $monetize_by,
1349	'course_pricing' => $course_pricing,
1350	'course_settings' => get_post_meta( $course_id, '_tutor_course_settings', true ),
1351	'step_completion_status' => array(
1352	'basic' => true,
1353	'curriculum' => false,
1354	'additional' => false,
1355	'certificate' => false,
1356	),
1357	);
1358
1359	$tax_on_single = get_post_meta( $course_id, self::TAX_ON_SINGLE_META, true );
1360	$tax_on_subscription = get_post_meta( $course_id, self::TAX_ON_SUBSCRIPTION_META, true );
1361
1362	$data['tax_collection'] = array(
1363	'tax_on_single' => '' === $tax_on_single ? '1' : $tax_on_single,
1364	'tax_on_subscription' => '' === $tax_on_subscription ? '1' : $tax_on_subscription,
1365	);
1366
1367	$data = apply_filters( 'tutor_course_details_response', array_merge( $course, $data ) );
1368
1369	$this->json_response( __( 'Data retrieved successfully!', 'tutor' ), $data );
1370	}
1371
1372	/**
1373	* Load course builder.
1374	*
1375	* @since 3.0.0
1376	*
1377	* @return void
1378	*/
1379	public function load_course_builder() {
1380	global $pagenow;
1381
1382	$has_pro = tutor()->has_pro;
1383	$has_access_role = User::has_any_role( array( User::ADMIN, User::INSTRUCTOR ) );
1384
1385	$course_id = Input::get( 'course_id', 0, Input::TYPE_INT );
1386	$backend_builder = is_admin() && 'admin.php' === $pagenow && 'create-course' === Input::get( 'page' );
1387	$backend_edit = $backend_builder && $course_id;
1388
1389	$is_frontend_builder = tutor_utils()->is_tutor_frontend_dashboard( 'create-course' );
1390	$frontend_edit = $is_frontend_builder && $course_id;
1391
1392	if ( $has_access_role && ( $backend_edit \|\| ( $has_pro && $frontend_edit ) ) ) {
1393	$post_type = get_post_type( $course_id );
1394	$can_edit_course = tutor_utils()->can_user_edit_course( get_current_user_id(), $course_id );
1395
1396	if ( tutor()->course_post_type === $post_type && ( User::is_admin() \|\| $can_edit_course ) ) {
1397	/**
1398	* Edit trash course behavior
1399	*
1400	* @since 3.0.0
1401	*/
1402	if ( CourseModel::STATUS_TRASH === get_post_status( $course_id ) ) {
1403	$message = User::is_admin()
1404	? __( 'You cannot edit this course because it is in the Trash. Please restore it and try again', 'tutor' )
1405	: tutor_utils()->error_message();
1406	wp_die( esc_html( $message ) );
1407	}
1408
1409	$this->load_course_builder_view();
1410	}
1411	}
1412	}
1413
1414	/**
1415	* Enqueue course builder assets like CSS, JS
1416	*
1417	* @since 3.0.0
1418	*
1419	* @return void
1420	*/
1421	public function enqueue_course_builder_assets() {
1422	// Fix: function print_emoji_styles is deprecated since version 6.4.0!
1423	remove_action( 'wp_print_styles', 'print_emoji_styles' );
1424	remove_action( 'wp_head', 'wp_admin_bar_header' );
1425	add_action( 'wp_head', 'wp_enqueue_admin_bar_header_styles' );
1426
1427	do_action( 'tutor_course_builder_before_wp_editor_load' );
1428	wp_enqueue_script( 'wp-tinymce' );
1429	wp_enqueue_script( 'mce-view' );
1430	wp_enqueue_editor();
1431
1432	wp_enqueue_media();
1433	wp_enqueue_script( 'tutor-course-builder', tutor()->url . 'assets/js/tutor-course-builder.js', array( 'wp-date', 'wp-i18n', 'wp-element', 'wp-api' ), TUTOR_VERSION, true );
1434	wp_set_script_translations( 'tutor-course-builder', 'tutor', tutor()->path . 'languages/' );
1435
1436	wp_localize_script(
1437	'mce-view',
1438	'mceViewL10n',
1439	array(
1440	'shortcodes' => ! empty( $GLOBALS['shortcode_tags'] ) ? array_keys( $GLOBALS['shortcode_tags'] ) : array(),
1441	)
1442	);
1443	}
1444
1445	/**
1446	* Localize custom course builder data for _tutorobject.
1447	*
1448	* @since 3.3.1
1449	*
1450	* @param array $data the localized data.
1451	*
1452	* @return array
1453	*/
1454	public function localize_course_builder_data( $data ) {
1455	global $pagenow;
1456
1457	$course_id = Input::get( 'course_id', 0, Input::TYPE_INT );
1458	$backend_builder = is_admin() && 'admin.php' === $pagenow && 'create-course' === Input::get( 'page' );
1459	$backend_edit = $backend_builder && $course_id;
1460
1461	$is_frontend_builder = tutor_utils()->is_tutor_frontend_dashboard( 'create-course' );
1462	$frontend_edit = $is_frontend_builder && $course_id;
1463
1464	if ( ! $backend_edit && ! $frontend_edit ) {
1465	return $data;
1466	}
1467
1468	/**
1469	* Prepare course builder data.
1470	*/
1471	$default_data = ( new Assets( false ) )->get_default_localized_data();
1472
1473	if ( isset( $default_data['current_user']['data']['id'] ) ) {
1474	$tutor_user = tutor_utils()->get_tutor_user( $default_data['current_user']['data']['id'] );
1475	$default_data['current_user']['data']['tutor_profile_photo_url'] = $tutor_user->tutor_profile_photo_url;
1476	}
1477
1478	/**
1479	* Localized only options to protect sensitive info like API keys.
1480	*/
1481	$required_options = array(
1482	'monetize_by',
1483	'enable_course_marketplace',
1484	'course_permalink_base',
1485	'supported_video_sources',
1486	'enrollment_expiry_enabled',
1487	'enable_q_and_a_on_course',
1488	'instructor_can_delete_course',
1489	'chatgpt_enable',
1490	'hide_admin_bar_for_users',
1491	'enable_redirect_on_course_publish_from_frontend',
1492	'instructor_can_publish_course',
1493	'instructor_can_change_course_author',
1494	'instructor_can_manage_co_instructors',
1495	);
1496
1497	$full_settings = get_option( 'tutor_option', array() );
1498	$settings = Options_V2::get_only( $required_options );
1499	$settings['course_builder_logo_url'] = wp_get_attachment_image_url( $full_settings['tutor_frontend_course_page_logo_id'] ?? 0, 'full' );
1500	$settings['chatgpt_key_exist'] = tutor()->has_pro && ! empty( $full_settings['chatgpt_api_key'] ?? '' );
1501	$settings['youtube_api_key_exist'] = ! empty( $full_settings['lesson_video_duration_youtube_api_key'] ?? '' );
1502
1503	$settings['enable_tax'] = Tax::get_setting( 'enable_tax', true );
1504	$settings['is_tax_included_in_price'] = Tax::is_tax_included_in_price();
1505	$settings['enable_individual_tax_control'] = Tax::get_setting( 'enable_individual_tax_control' );
1506
1507	$new_data = array( 'settings' => $settings );
1508
1509	$data = array_merge( $default_data, $new_data );
1510
1511	/**
1512	* Course builder dashboard URL based on role and settings.
1513	*/
1514	$dashboard_url = tutor_utils()->tutor_dashboard_url();
1515	if ( User::is_admin() ) {
1516	$dashboard_url = get_admin_url();
1517	}
1518
1519	/**
1520	* EDD product list
1521	*/
1522	$monetize_by = tutor_utils()->get_option( 'monetize_by' );
1523	if ( 'edd' === $monetize_by && tutor_utils()->has_edd() ) {
1524	$data['edd_products'] = tutor_utils()->get_edd_products();
1525	}
1526
1527	$difficulty_levels = array();
1528	foreach ( tutor_utils()->course_levels() as $value => $label ) {
1529	$difficulty_levels[] = array(
1530	'label' => $label,
1531	'value' => $value,
1532	);
1533	}
1534
1535	$supported_video_sources = array();
1536	$saved_video_source_list = (array) ( $settings['supported_video_sources'] ?? array() );
1537
1538	foreach ( tutor_utils()->get_video_sources( true ) as $value => $label ) {
1539	if ( in_array( $value, $saved_video_source_list, true ) ) {
1540	$supported_video_sources[] = array(
1541	'label' => $label,
1542	'value' => $value,
1543	);
1544	}
1545	}
1546
1547	$data['dashboard_url'] = $dashboard_url;
1548	$data['backend_course_list_url'] = get_admin_url( null, 'admin.php?page=tutor' );
1549	$data['frontend_course_list_url'] = tutor_utils()->tutor_dashboard_url( 'my-courses' );
1550	$data['timezones'] = tutor_global_timezone_lists();
1551	$data['difficulty_levels'] = $difficulty_levels;
1552	$data['supported_video_sources'] = $supported_video_sources;
1553	$data['wp_rest_nonce'] = wp_create_nonce( 'wp_rest' );
1554
1555	if ( 'en_US' !== $data['local'] ) {
1556	$data['course_builder_basic_locales'] = tutils()->get_script_locale_data( 'tutor-course-builder-basic', $data['local'] );
1557	$data['course_builder_curriculum_locales'] = tutils()->get_script_locale_data( 'tutor-course-builder-curriculum', $data['local'] );
1558	$data['course_builder_additional_locales'] = tutils()->get_script_locale_data( 'tutor-course-builder-additional', $data['local'] );
1559	}
1560
1561	$data = apply_filters( 'tutor_course_builder_localized_data', $data );
1562
1563	return $data;
1564	}
1565
1566	/**
1567	* Load view for course builder.
1568	*
1569	* @since 3.0.0
1570	*
1571	* @return void
1572	*/
1573	public function load_course_builder_view() {
1574	/**
1575	* Hide admin menu and footer.
1576	*
1577	* @since 3.3.0
1578	*/
1579	echo '<style>
1580	#adminmenumain, #wpfooter, .notice, #tutor-page-wrap { display: none !important; }
1581	#wpcontent { margin: 0 !important; padding: 0 !important; }
1582	#wpbody-content { padding-bottom: 0px !important; float: none; }
1583	</style>';
1584
1585	do_action( 'tutor_before_course_builder_load' );
1586	include_once tutor()->path . 'views/pages/course-builder.php';
1587	do_action( 'tutor_after_course_builder_load' );
1588	}
1589
1590	/**
1591	* Add enroll require login class
1592	*
1593	* @since 2.6.0
1594	*
1595	* @param string $class_name css class name.
1596	*
1597	* @return string
1598	*/
1599	public function add_enroll_required_login_class( $class_name ) {
1600	$enabled_tutor_login = tutor_utils()->get_option( 'enable_tutor_native_login', null, true, true );
1601	if ( ! $enabled_tutor_login ) {
1602	return '';
1603	}
1604
1605	return $class_name;
1606	}
1607
1608	/**
1609	* Get list of WC products.
1610	*
1611	* @since 2.5.0
1612	* @since 3.0.0 exclude_linked_products, course_id are added.
1613	*
1614	* @return void
1615	*/
1616	public function get_wc_products() {
1617	$exclude = array();
1618	$exclude_linked_products = Input::has( 'exclude_linked_products' );
1619	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1620
1621	if ( $exclude_linked_products ) {
1622	$exclude = tutor_utils()->get_linked_product_ids();
1623	}
1624
1625	if ( $course_id ) {
1626	$linked_product_id = tutor_utils()->get_course_product_id( $course_id );
1627	if ( $linked_product_id ) {
1628	$exclude = array_filter( $exclude, fn( $id )=> $linked_product_id !== (int) $id );
1629	}
1630	}
1631
1632	$exclude = array_unique( $exclude );
1633
1634	$this->json_response(
1635	__( 'Products retrieved successfully!', 'tutor' ),
1636	tutor_utils()->get_wc_products_db( $exclude ),
1637	HttpHelper::STATUS_OK
1638	);
1639	}
1640
1641	/**
1642	* Get course associate WC product info by Ajax request
1643	*
1644	* @since 2.0.7
1645	*
1646	* @return void
1647	*/
1648	public function get_wc_product() {
1649	tutor_utils()->checking_nonce();
1650	$product_id = Input::post( 'product_id' );
1651	$product = wc_get_product( $product_id );
1652	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1653
1654	$is_linked_with_course = tutor_utils()->product_belongs_with_course( $product_id );
1655
1656	/**
1657	* If selected product is already linked with
1658	* a course & it is not the current course the
1659	* return error
1660	*
1661	* @since 2.1.0
1662	*/
1663	if ( is_object( $is_linked_with_course ) && $is_linked_with_course->post_id != $course_id ) {
1664	wp_send_json_error(
1665	__( 'One product can not be added to multiple course!', 'tutor' )
1666	);
1667	}
1668
1669	if ( $product ) {
1670	$data = array(
1671	'name' => $product->get_name(),
1672	'regular_price' => $product->get_regular_price(),
1673	'sale_price' => $product->get_sale_price(),
1674	);
1675	wp_send_json_success( $data );
1676	} else {
1677	wp_send_json_error( __( 'Product not found', 'tutor' ) );
1678	}
1679	}
1680
1681	/**
1682	* Update course content order
1683	*
1684	* @since 1.0.0
1685	* @return void
1686	*/
1687	public function tutor_update_course_content_order() {
1688	tutor_utils()->checking_nonce();
1689
1690	if ( Input::has( 'content_parent' ) ) {
1691	$content_parent = Input::post( 'content_parent', array(), Input::TYPE_ARRAY );
1692	$topic_id = tutor_utils()->array_get( 'parent_topic_id', $content_parent );
1693	$content_id = tutor_utils()->array_get( 'content_id', $content_parent );
1694
1695	if ( ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) {
1696	wp_send_json_success( array( 'message' => __( 'Access Denied!', 'tutor' ) ) );
1697	exit;
1698	}
1699
1700	// Update the parent topic id of the content.
1701	global $wpdb;
1702	$wpdb->update( $wpdb->posts, array( 'post_parent' => $topic_id ), array( 'ID' => $content_id ) );
1703	}
1704
1705	// Save course content order.
1706	$this->save_course_content_order();
1707
1708	wp_send_json_success();
1709	}
1710
1711	/**
1712	* Restrict new student entry
1713	*
1714	* @since 1.0.0
1715	* @param mixed $content content.
1716	*
1717	* @return mixed
1718	*/
1719	public function restrict_new_student_entry( $content ) {
1720
1721	if ( ! tutor_utils()->is_course_fully_booked() ) {
1722	// No restriction if not fully booked.
1723	return $content;
1724	}
1725
1726	return '<div class="list-item-booking booking-full tutor-d-flex tutor-align-center"><div class="booking-progress tutor-d-flex"><span class="tutor-mr-8 tutor-color-warning tutor-icon-circle-info"></span></div><div class="tutor-fs-7 tutor-fw-medium">' .
1727	__( 'Fully Booked', 'tutor' )
1728	. '</div></div>';
1729	}
1730
1731	/**
1732	* Restrict media
1733	*
1734	* @since 1.0.0
1735	* @param string $where where clause.
1736	* @return string
1737	*/
1738	public function restrict_media( $where ) {
1739	$action = Input::post( 'action' );
1740	if ( 'query-attachments' === $action && tutor_utils()->is_instructor() ) {
1741	if ( ! tutor_utils()->has_user_role( array( 'administrator', 'editor' ) ) ) {
1742	$where .= ' AND post_author=' . get_current_user_id();
1743	}
1744	}
1745
1746	return $where;
1747	}
1748
1749	/**
1750	* Save course content order
1751	*
1752	* @since 1.0.0
1753	* @return void
1754	*/
1755	private function save_course_content_order() {
1756	global $wpdb;
1757
1758	$new_order = Input::post( 'tutor_topics_lessons_sorting' );
1759	if ( ! empty( $new_order ) ) {
1760	$order = json_decode( $new_order, true );
1761
1762	if ( is_array( $order ) && count( $order ) ) {
1763	$i = 0;
1764	foreach ( $order as $topic ) {
1765	$i++;
1766	$wpdb->update(
1767	$wpdb->posts,
1768	array( 'menu_order' => $i ),
1769	array( 'ID' => $topic['topic_id'] )
1770	);
1771
1772	/**
1773	* Removing All lesson with topic
1774	*/
1775
1776	$wpdb->update(
1777	$wpdb->posts,
1778	array( 'post_parent' => 0 ),
1779	array( 'post_parent' => $topic['topic_id'] )
1780	);
1781
1782	/**
1783	* Lesson Attaching with topic ID
1784	* Sorting lesson
1785	*/
1786	if ( isset( $topic['lesson_ids'] ) ) {
1787	$lesson_ids = $topic['lesson_ids'];
1788	} else {
1789	$lesson_ids = array();
1790	}
1791	if ( count( $lesson_ids ) ) {
1792	foreach ( $lesson_ids as $lesson_key => $lesson_id ) {
1793	$wpdb->update(
1794	$wpdb->posts,
1795	array(
1796	'post_parent' => $topic['topic_id'],
1797	'menu_order' => $lesson_key,
1798	),
1799	array( 'ID' => $lesson_id )
1800	);
1801	}
1802	}
1803	}
1804	}
1805	}
1806	}
1807
1808	/**
1809	* Insert Topic and attached it with Course
1810	*
1811	* @since 1.0.0
1812	*
1813	* @param integer $post_ID post ID.
1814	* @param object $post post object.
1815	*
1816	* @return void
1817	*/
1818	public function save_course_meta( $post_ID, $post ) {
1819	global $wpdb;
1820
1821	do_action( 'tutor_save_course', $post_ID, $post );
1822
1823	/**
1824	* Save course price type
1825	*/
1826	$price_type = Input::post( 'tutor_course_price_type' );
1827	if ( $price_type ) {
1828	update_post_meta( $post_ID, self::COURSE_PRICE_TYPE_META, $price_type );
1829	}
1830
1831	//phpcs:disable WordPress.Security.NonceVerification.Missing
1832	// Course Duration.
1833	if ( ! empty( $_POST['course_duration'] ) ) {
1834	$video = Input::post( 'course_duration', array(), Input::TYPE_ARRAY );
1835	update_post_meta( $post_ID, '_course_duration', $video );
1836	}
1837
1838	if ( ! empty( $_POST['_tutor_course_level'] ) ) {
1839	$course_level = Input::post( '_tutor_course_level' );
1840	update_post_meta( $post_ID, '_tutor_course_level', $course_level );
1841	}
1842
1843	$additional_data_edit = Input::post( '_tutor_course_additional_data_edit' );
1844	if ( $additional_data_edit ) {
1845	if ( ! empty( $_POST['course_benefits'] ) ) {
1846	$course_benefits = Input::post( 'course_benefits', '', Input::TYPE_KSES_POST );
1847	update_post_meta( $post_ID, '_tutor_course_benefits', $course_benefits );
1848	} elseif ( ! tutor_is_rest() ) {
1849	delete_post_meta( $post_ID, '_tutor_course_benefits' );
1850	}
1851
1852	if ( ! empty( $_POST['course_requirements'] ) ) {
1853	$requirements = Input::post( 'course_requirements', '', Input::TYPE_KSES_POST );
1854	update_post_meta( $post_ID, '_tutor_course_requirements', $requirements );
1855	} elseif ( ! tutor_is_rest() ) {
1856	delete_post_meta( $post_ID, '_tutor_course_requirements' );
1857	}
1858
1859	if ( ! empty( $_POST['course_target_audience'] ) ) {
1860	$target_audience = Input::post( 'course_target_audience', '', Input::TYPE_KSES_POST );
1861	update_post_meta( $post_ID, '_tutor_course_target_audience', $target_audience );
1862	} elseif ( ! tutor_is_rest() ) {
1863	delete_post_meta( $post_ID, '_tutor_course_target_audience' );
1864	}
1865
1866	if ( ! empty( $_POST['course_material_includes'] ) ) {
1867	$material_includes = Input::post( 'course_material_includes', '', Input::TYPE_KSES_POST );
1868	update_post_meta( $post_ID, '_tutor_course_material_includes', $material_includes );
1869	} elseif ( ! tutor_is_rest() ) {
1870	delete_post_meta( $post_ID, '_tutor_course_material_includes' );
1871	}
1872	//phpcs:enable WordPress.Security.NonceVerification.Missing
1873	}
1874
1875	/**
1876	* Sorting Topics and lesson
1877	*/
1878	$this->save_course_content_order();
1879
1880	// Additional data like course intro video.
1881	if ( $additional_data_edit ) {
1882	// Sanitize data through helper method.
1883	$video = Input::sanitize_array(
1884	$_POST['video'] ?? array(), //phpcs:ignore
1885	array(
1886	'source_external_url' => 'esc_url',
1887	'source_embedded' => 'wp_kses_post',
1888	),
1889	true
1890	);
1891	$video_source = tutor_utils()->array_get( 'source', $video );
1892	if ( -1 !== $video_source ) {
1893	update_post_meta( $post_ID, '_video', $video );
1894	} elseif ( ! tutor_is_rest() ) {
1895	delete_post_meta( $post_ID, '_video' );
1896	}
1897	}
1898
1899	/**
1900	* Adding author to instructor automatically
1901	*/
1902
1903	// Override post author id.
1904	$author_id = isset( $_POST['post_author_override'] ) ? $_POST['post_author_override'] : $post->post_author; //phpcs:ignore
1905	$attached = (int) $wpdb->get_var(
1906	$wpdb->prepare(
1907	"SELECT COUNT(umeta_id) FROM {$wpdb->usermeta}
1908	WHERE user_id = %d
1909	AND meta_key = '_tutor_instructor_course_id'
1910	AND meta_value = %d ",
1911	$author_id,
1912	$post_ID
1913	)
1914	);
1915
1916	if ( ! $attached ) {
1917	add_user_meta( $author_id, '_tutor_instructor_course_id', $post_ID );
1918	}
1919
1920	/**
1921	* Disable question and answer for this course
1922	*
1923	* @since 1.7.0
1924	*/
1925	if ( $additional_data_edit ) {
1926	foreach ( $this->additional_meta as $key ) {
1927	//phpcs:ignore WordPress.Security.NonceVerification.Missing
1928	update_post_meta( $post_ID, $key, ( isset( $_POST[ $key ] ) ? 'yes' : 'no' ) );
1929	}
1930	}
1931
1932	do_action( 'tutor_save_course_after', $post_ID, $post );
1933	}
1934
1935	/**
1936	* Save course topic
1937	*
1938	* @since 1.0.0
1939	* @since 3.0.0 response and input name updated.
1940	*
1941	* @return void
1942	*/
1943	public function tutor_save_topic() {
1944	tutor_utils()->check_nonce();
1945
1946	$is_update = false;
1947	$errors = array();
1948	$topic_title = Input::post( 'title' );
1949
1950	if ( empty( $topic_title ) ) {
1951	$errors['topic_title'] = __( 'Topic title is required!', 'tutor' );
1952	$this->json_response(
1953	__( 'Invalid inputs', 'tutor' ),
1954	$errors,
1955	HttpHelper::STATUS_UNPROCESSABLE_ENTITY
1956	);
1957	}
1958
1959	// Gather parameters.
1960	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
1961	$topic_id = Input::post( 'topic_id', 0, Input::TYPE_INT );
1962	$topic_summary = Input::post( 'summary', '', Input::TYPE_KSES_POST );
1963
1964	$next_topic_order_id = tutor_utils()->get_next_topic_order_id( $course_id, $topic_id );
1965
1966	// Validate if user can manage the topic.
1967	if ( ! tutor_utils()->can_user_manage( 'course', $course_id ) \|\| ( $topic_id && ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) ) {
1968	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
1969	}
1970
1971	// Create payload to create/update the topic.
1972	$post_arr = array(
1973	'post_type' => 'topics',
1974	'post_title' => $topic_title,
1975	'post_content' => $topic_summary,
1976	'post_status' => 'publish',
1977	'post_author' => get_current_user_id(),
1978	'post_parent' => $course_id,
1979	'menu_order' => $next_topic_order_id,
1980	);
1981
1982	if ( $topic_id ) {
1983	$is_update = true;
1984	$post_arr['ID'] = $topic_id;
1985	}
1986
1987	$current_topic_id = wp_insert_post( $post_arr );
1988
1989	if ( $is_update ) {
1990	$this->json_response(
1991	__( 'Topic updated successfully!', 'tutor' ),
1992	$current_topic_id
1993	);
1994	} else {
1995	$this->json_response(
1996	__( 'Topic created successfully!', 'tutor' ),
1997	$current_topic_id,
1998	HttpHelper::STATUS_CREATED
1999	);
2000	}
2001	}
2002
2003	/**
2004	* Delete a course topic
2005	*
2006	* @since 1.0.0
2007	* @since 3.0.0 code refactor and response updated.
2008	*
2009	* @return void
2010	*/
2011	public function tutor_delete_topic() {
2012	tutor_utils()->check_nonce();
2013
2014	$topic_id = Input::post( 'topic_id', 0, Input::TYPE_INT );
2015	if ( ! $topic_id \|\| ! is_numeric( $topic_id ) \|\| ! tutor_utils()->can_user_manage( 'topic', $topic_id ) ) {
2016	$this->json_response(
2017	tutor_utils()->error_message(),
2018	null,
2019	HttpHelper::STATUS_FORBIDDEN
2020	);
2021	}
2022
2023	global $wpdb;
2024
2025	// Assign course ID to orphan content IDs since the topic will be deleted.
2026	$course_id = tutor_utils()->get_course_id_by( 'topic', $topic_id );
2027	$content_ids = tutor_utils()->get_course_content_ids_by( null, 'topic', $topic_id );
2028	foreach ( $content_ids as $content_id ) {
2029	update_post_meta( $content_id, '_tutor_course_id_for_lesson', $course_id );
2030	// Actually all kind of contents.
2031	// This keyword '_tutor_course_id_for_lesson' used just to support backward compatibility.
2032	}
2033
2034	// Set contents under the topic orphan.
2035	$wpdb->update( $wpdb->posts, array( 'post_parent' => 0 ), array( 'post_parent' => $topic_id ) );
2036
2037	// Then delete the topic from database.
2038	$wpdb->delete( $wpdb->postmeta, array( 'post_id' => $topic_id ) );
2039	wp_delete_post( $topic_id );
2040
2041	$this->json_response(
2042	__( 'Topic deleted successfully!', 'tutor' )
2043	);
2044	}
2045
2046	/**
2047	* Handle enroll now action
2048	*
2049	* @since 1.0.0
2050	*
2051	* @return void
2052	*/
2053	public function enroll_now() {
2054
2055	if ( '_tutor_course_enroll_now' !== Input::post( 'tutor_course_action' ) \|\| ! Input::has( 'tutor_course_id' ) ) {
2056	return;
2057	}
2058
2059	// Checking Nonce.
2060	tutor_utils()->checking_nonce();
2061
2062	$user_id = get_current_user_id();
2063	if ( ! $user_id ) {
2064	exit( esc_html__( 'Please Sign In first', 'tutor' ) );
2065	}
2066
2067	$course_id = Input::post( 'tutor_course_id', 0, Input::TYPE_INT );
2068
2069	/**
2070	* TODO: need to check purchase information
2071	*/
2072
2073	$is_purchasable = tutor_utils()->is_course_purchasable( $course_id );
2074
2075	/**
2076	* If is is not purchasable, it's free, and enroll right now
2077	* If purchasable, then process purchase.
2078	*
2079	* @since: v.1.0.0
2080	*/
2081	if ( $is_purchasable ) { //phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedIf
2082	// Process purchase.
2083
2084	} else {
2085	// Free enroll.
2086	tutor_utils()->do_enroll( $course_id );
2087	}
2088
2089	$referer_url = wp_get_referer();
2090	wp_safe_redirect( tutor_utils()->get_nocache_url( $referer_url ) );
2091	exit;
2092	}
2093
2094	/**
2095	* Mark complete completed
2096	*
2097	* @since 1.0.0
2098	*
2099	* @since 3.7.1 Filter hook: tutor_user_can_complete_course added
2100	*
2101	* @return void
2102	*/
2103	public function mark_course_complete() {
2104	$tutor_action = Input::post( 'tutor_action' );
2105	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
2106	if ( 'tutor_complete_course' !== $tutor_action \|\| ! $course_id ) {
2107	return;
2108	}
2109
2110	$permalink = get_the_permalink( $course_id );
2111
2112	// Checking nonce.
2113	tutor_utils()->checking_nonce();
2114
2115	$user_id = get_current_user_id();
2116
2117	// TODO: need to show view if not signed_in.
2118	if ( ! $user_id ) {
2119	die( esc_html__( 'Please Sign-In', 'tutor' ) );
2120	}
2121
2122	/**
2123	* Filter hook provided to restrict course completion. This is useful
2124	* for specific cases like prerequisites. WP_Error should be returned
2125	* from the filter value to prevent the completion.
2126	*/
2127	$can_complete = apply_filters( 'tutor_user_can_complete_course', true, $user_id, $course_id );
2128	if ( is_wp_error( $can_complete ) ) {
2129	tutor_utils()->redirect_to( $permalink, $can_complete->get_error_message(), 'error' );
2130	} else {
2131	CourseModel::mark_course_as_completed( $course_id, $user_id );
2132	// Set temporary identifier to show review pop up.
2133	self::set_review_popup_data( $user_id, $course_id, $permalink );
2134
2135	wp_safe_redirect( $permalink );
2136	exit;
2137	}
2138	}
2139
2140	/**
2141	* Set data for review popup.
2142	*
2143	* @since 2.2.5
2144	* @since 2.4.0 removed $permalink param. store user meta instead of option data.
2145	*
2146	* @param int $user_id user id.
2147	* @param int $course_id course id.
2148	*
2149	* @return void
2150	*/
2151	public static function set_review_popup_data( $user_id, $course_id ) {
2152	if ( get_tutor_option( 'enable_course_review' ) ) {
2153	$rating = tutor_utils()->get_course_rating_by_user( $course_id, $user_id );
2154	if ( ! $rating \|\| ( empty( $rating->rating ) && empty( $rating->review ) ) ) {
2155	$meta_key = User::get_review_popup_meta( $course_id );
2156	add_user_meta( $user_id, $meta_key, $course_id, true );
2157	}
2158	}
2159	}
2160
2161	/**
2162	* Popup review form on course details
2163	*
2164	* @since 1.0.0
2165	* @return void
2166	*/
2167	public function popup_review_form() {
2168	if ( is_user_logged_in() ) {
2169	$user_id = get_current_user_id();
2170	$course_id = get_the_ID();
2171	$meta_key = User::get_review_popup_meta( $course_id );
2172	$review_course_id = (int) get_user_meta( $user_id, $meta_key, true );
2173
2174	if ( is_single() && $course_id === $review_course_id ) {
2175	include tutor()->path . 'views/modal/review.php';
2176	}
2177	}
2178	}
2179
2180	/**
2181	* Review popup data clear
2182	*
2183	* @since 2.4.0
2184	*
2185	* @return void
2186	*/
2187	public function clear_review_popup_data() {
2188	tutils()->checking_nonce();
2189
2190	if ( is_user_logged_in() ) {
2191	$user_id = get_current_user_id();
2192	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
2193
2194	if ( $course_id ) {
2195	$meta_key = User::get_review_popup_meta( $course_id );
2196	delete_user_meta( $user_id, $meta_key, $course_id );
2197	}
2198
2199	wp_send_json_success();
2200	}
2201	}
2202
2203	/**
2204	* Delete course delete from frontend dashboard
2205	*
2206	* @since 2.0.0
2207	* @return void
2208	*/
2209	public function tutor_delete_dashboard_course() {
2210	tutor_utils()->checking_nonce();
2211
2212	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
2213	if ( ! tutor_utils()->can_user_manage( 'course', $course_id ) ) {
2214	wp_send_json_error( array( 'message' => __( 'Access Denied', 'tutor' ) ) );
2215	}
2216
2217	/**
2218	* Co-instructor can not delete a course
2219	*
2220	* @since 2.1.6
2221	*/
2222	if ( false === CourseModel::is_main_instructor( $course_id ) ) {
2223	wp_send_json_error( array( 'message' => __( 'Only main instructor can delete this course', 'tutor' ) ) );
2224	}
2225
2226	// Check if user is only an instructor.
2227	if ( ! current_user_can( 'administrator' ) ) {
2228	// Check if instructor can trash course.
2229	$can_trash_post = tutor_utils()->get_option( 'instructor_can_delete_course' );
2230
2231	if ( ! $can_trash_post ) {
2232	wp_send_json_error( tutor_utils()->error_message() );
2233	}
2234	}
2235
2236	$trash_course = wp_update_post(
2237	array(
2238	'ID' => $course_id,
2239	'post_status' => 'trash',
2240	)
2241	);
2242
2243	if ( $trash_course ) {
2244	wp_send_json_success( __( 'Course has been trashed successfully ', 'tutor' ) );
2245	}
2246	wp_send_json_success();
2247	}
2248
2249	/**
2250	* Main author change from gutenberg editor
2251	*
2252	* @since 2.0.0
2253	*
2254	* @param array $data data.
2255	* @param array $postarr post array.
2256	*
2257	* @return mixed
2258	*/
2259	public function tutor_add_gutenberg_author( $data, $postarr ) {
2260	$gutenberg_enabled = tutor_utils()->get_option( 'enable_gutenberg_course_edit' );
2261	$post_type = $postarr['post_type'];
2262	$courses_post_type = tutor()->course_post_type;
2263
2264	if ( false === is_admin() \|\| false === $gutenberg_enabled \|\| $post_type !== $courses_post_type ) {
2265	return $data;
2266	}
2267
2268	/**
2269	* Only admin can change main author
2270	*/
2271	if ( $courses_post_type === $post_type && ! current_user_can( 'administrator' ) ) {
2272	global $wpdb;
2273	$post_ID = (int) tutor_utils()->avalue_dot( 'ID', $postarr );
2274	$post_author = (int) $wpdb->get_var( $wpdb->prepare( "SELECT post_author FROM {$wpdb->posts} WHERE ID = %d ", $post_ID ) );
2275
2276	if ( $post_author > 0 ) {
2277	$data['post_author'] = $post_author;
2278	} else {
2279	$data['post_author'] = get_current_user_id();
2280	}
2281	}
2282
2283	return $data;
2284	}
2285
2286
2287	/**
2288	* Attach product with course when course save from frontend or backend.
2289	*
2290	* @since 1.3.4
2291	*
2292	* @since 3.0.0 Store regular & sale price in meta to make compatible with Tutor monetization
2293	*
2294	* @param integer $post_ID course ID.
2295	* @param array $post_data created course post details.
2296	*
2297	* @return void
2298	*/
2299	public function attach_product_with_course( $post_ID, $post_data ) {
2300	$monetize_by = tutor_utils()->get_option( 'monetize_by' );
2301	$product_id = Input::post( '_tutor_course_product_id', 0, Input::TYPE_INT );
2302
2303	/**
2304	* For native monetization, just return
2305	* No need to attach anything.
2306	*/
2307	if ( Ecommerce::MONETIZE_BY === $monetize_by ) {
2308	return;
2309	}
2310
2311	/**
2312	* When course moved paid to free
2313	* Keep the product linked and return.
2314	*/
2315	if ( -1 === $product_id ) {
2316	return;
2317	}
2318
2319	/**
2320	* Free user can only select product from dropdown
2321	*/
2322	if ( tutor()->has_pro === false && 'wc' === $monetize_by ) {
2323	if ( $product_id > 0 ) {
2324	update_post_meta( $post_ID, self::COURSE_PRODUCT_ID_META, $product_id );
2325	}
2326
2327	return;
2328	}
2329
2330	$attached_product_id = tutor_utils()->get_course_product_id( $post_ID );
2331	$course_price = Input::post( 'course_price', 0, Input::TYPE_NUMERIC );
2332	$sale_price = Input::post( 'course_sale_price', 0, Input::TYPE_NUMERIC );
2333
2334	if ( ! $course_price \|\| $sale_price >= $course_price ) {
2335	return;
2336	}
2337
2338	$course = get_post( $post_ID );
2339
2340	update_post_meta( $post_ID, self::COURSE_PRICE_TYPE_META, self::PRICE_TYPE_PAID );
2341
2342	if ( 'wc' === $monetize_by ) {
2343
2344	$is_update = ( $product_id && wc_get_product( $product_id ) ) ? true : false;
2345
2346	if ( $is_update ) {
2347	update_post_meta( $post_ID, self::COURSE_PRODUCT_ID_META, $product_id );
2348
2349	$product_id = self::create_wc_product( $course->post_title, $course_price, $sale_price, $product_id );
2350	$product_obj = wc_get_product( $product_id );
2351	if ( $product_obj->is_type( 'subscription' ) ) {
2352	update_post_meta( $product_id, '_subscription_price', $course_price );
2353	}
2354
2355	// Set course regular & sale price.
2356	self::set_course_regular_and_sale_price( $post_ID, $product_obj->get_regular_price(), $product_obj->get_sale_price() );
2357	} else {
2358	// Create new WC product name with course title.
2359	$product_id = self::create_wc_product( $course->post_title, $course_price, $sale_price );
2360	if ( $product_id ) {
2361	$product_obj = wc_get_product( $product_id );
2362
2363	self::sync_course_with_wc_product( $post_ID, $product_id );
2364
2365	// Set course regular & sale price.
2366	self::set_course_regular_and_sale_price( $post_ID, $product_obj->get_regular_price(), $product_obj->get_sale_price() );
2367	}
2368	}
2369
2370	$course_post_thumbnail = Input::post( 'thumbnail_id', 0, Input::TYPE_INT );
2371	if ( $product_id && $course_post_thumbnail ) {
2372	set_post_thumbnail( $product_id, $course_post_thumbnail );
2373	}
2374	} elseif ( 'edd' === $monetize_by ) {
2375
2376	$is_update = false;
2377
2378	if ( $attached_product_id ) {
2379	$edd_price = get_post_meta( $attached_product_id, 'edd_price', true );
2380	if ( $edd_price ) {
2381	$is_update = true;
2382	}
2383	}
2384
2385	if ( $is_update ) {
2386	// Update the product.
2387	update_post_meta( $attached_product_id, 'edd_price', $course_price );
2388	} else {
2389	// Create new product.
2390
2391	$post_arr = array(
2392	'post_type' => 'download',
2393	'post_title' => $course->post_title,
2394	'post_status' => 'publish',
2395	'post_author' => get_current_user_id(),
2396	);
2397	$download_id = wp_insert_post( $post_arr );
2398	if ( $download_id ) {
2399	// EDD edd_price.
2400	update_post_meta( $download_id, 'edd_price', $course_price );
2401
2402	update_post_meta( $post_ID, self::COURSE_PRODUCT_ID_META, $download_id );
2403	// Mark product for EDD.
2404	update_post_meta( $download_id, '_tutor_product', 'yes' );
2405
2406	$course_post_thumbnail = get_post_meta( $post_ID, '_thumbnail_id', true );
2407	if ( $course_post_thumbnail ) {
2408	set_post_thumbnail( $download_id, $course_post_thumbnail );
2409	}
2410	}
2411	}
2412	}
2413	}
2414
2415	/**
2416	* Add Course level to course settings
2417	*
2418	* @since 1.4.1
2419	*
2420	* @param array $args arguments.
2421	* @return array
2422	*/
2423	public function add_course_level_to_settings( $args ) {
2424	$course_id = get_the_ID();
2425	$levels = tutor_utils()->course_levels();
2426	$course_level = get_post_meta( $course_id, '_tutor_course_level', true );
2427
2428	$args['general']['fields']['_tutor_course_level'] = array(
2429	'type' => 'select',
2430	'label' => __( 'Difficulty Level', 'tutor' ),
2431	'label_title' => __( 'Enable', 'tutor' ),
2432	'options' => $levels,
2433	'value' => $course_level ? $course_level : 'intermediate',
2434	'desc' => __( 'Course difficulty level', 'tutor' ),
2435	);
2436
2437	return $args;
2438	}
2439
2440	/**
2441	* Check if course starting
2442	*
2443	* @since 1.4.8
2444	* @return void
2445	*/
2446	public function tutor_lesson_load_before() {
2447	$course_id = tutor_utils()->get_course_id_by_content( get_the_ID() );
2448	$completed_lessons = tutor_utils()->get_completed_lesson_count_by_course( $course_id );
2449	if ( is_user_logged_in() ) {
2450	$is_course_started = get_post_meta( $course_id, '_tutor_course_started', true );
2451	if ( ! $completed_lessons && ! $is_course_started ) {
2452	update_post_meta( $course_id, '_tutor_course_started', tutor_time() );
2453	do_action( 'tutor/course/started', $course_id );
2454	}
2455	}
2456	}
2457
2458	/**
2459	* Add Course level to course settings
2460	*
2461	* @since 1.4.8
2462	* @return void
2463	*/
2464	public function course_elements_enable_disable() {
2465	add_filter( 'tutor_course/single/completing-progress-bar', array( $this, 'enable_disable_course_progress_bar' ) );
2466	add_filter( 'tutor_course/single/material_includes', array( $this, 'enable_disable_material_includes' ) );
2467	add_filter( 'tutor_course/single/content', array( $this, 'enable_disable_course_content' ) );
2468	add_filter( 'tutor_course/single/benefits_html', array( $this, 'enable_disable_course_benefits' ) );
2469	add_filter( 'tutor_course/single/requirements_html', array( $this, 'enable_disable_course_requirements' ) );
2470	add_filter( 'tutor_course/single/audience_html', array( $this, 'enable_disable_course_target_audience' ) );
2471	add_filter( 'tutor_course/single/nav_items', array( $this, 'enable_disable_course_nav_items' ), 999, 2 );
2472	}
2473
2474	/**
2475	* Enable disable course progress bar
2476	*
2477	* @since 1.4.8
2478	*
2479	* @param string $html HTML string.
2480	* @return string
2481	*/
2482	public function enable_disable_course_progress_bar( $html ) {
2483	$disable_option = ! (bool) tutor_utils()->get_option( 'enable_course_progress_bar', true, true );
2484	if ( $disable_option ) {
2485	return '';
2486	}
2487	return $html;
2488	}
2489
2490	/**
2491	* Enable disable material includes
2492	*
2493	* @since 1.4.8
2494	*
2495	* @param string $html HTML string.
2496	* @return string
2497	*/
2498	public function enable_disable_material_includes( $html ) {
2499	$disable_option = ! (bool) get_tutor_option( 'enable_course_material', true, true );
2500	if ( $disable_option ) {
2501	return '';
2502	}
2503	return $html;
2504	}
2505
2506	/**
2507	* Enable disable course content
2508	*
2509	* @since 1.4.8
2510	*
2511	* @param string $html HTML string.
2512	* @return string
2513	*/
2514	public function enable_disable_course_content( $html ) {
2515	$disable_option = ! (bool) tutor_utils()->get_option( 'enable_course_description', true, true );
2516	if ( $disable_option ) {
2517	return '';
2518	}
2519	return $html;
2520	}
2521
2522	/**
2523	* Enable disable course benefits
2524	*
2525	* @since 1.4.8
2526	*
2527	* @param string $html HTML string.
2528	* @return string
2529	*/
2530	public function enable_disable_course_benefits( $html ) {
2531	$disable_option = ! (bool) tutor_utils()->get_option( 'enable_course_benefits', true, true );
2532	if ( $disable_option ) {
2533	return '';
2534	}
2535	return $html;
2536	}
2537
2538	/**
2539	* Enable disable course requirements
2540	*
2541	* @since 1.4.8
2542	*
2543	* @param string $html HTML string.
2544	* @return string
2545	*/
2546	public function enable_disable_course_requirements( $html ) {
2547	$disable_option = ! (bool) tutor_utils()->get_option( 'enable_course_requirements', true, true );
2548	if ( $disable_option ) {
2549	return '';
2550	}
2551	return $html;
2552	}
2553
2554	/**
2555	* Enable disable course target audience
2556	*
2557	* @since 1.4.8
2558	*
2559	* @param string $html HTML string.
2560	* @return string
2561	*/
2562	public function enable_disable_course_target_audience( $html ) {
2563	$disable_option = ! (bool) tutor_utils()->get_option( 'enable_course_target_audience', true, true );
2564	if ( $disable_option ) {
2565	return '';
2566	}
2567	return $html;
2568	}
2569
2570	/**
2571	* Enable disable course nav items
2572	*
2573	* @since 1.4.8
2574	*
2575	* @param array $items item list.
2576	* @param integer $course_id course ID.
2577	*
2578	* @return array
2579	*/
2580	public function enable_disable_course_nav_items( $items, $course_id ) {
2581	global $wp_query, $post;
2582	$enable_q_and_a_on_course = (bool) get_tutor_option( 'enable_q_and_a_on_course' );
2583	$disable_course_announcements = ! (bool) tutor_utils()->get_option( 'enable_course_announcements', true, true );
2584	$disable_qa_for_this_course = ( $wp_query->is_single && ! empty( $post ) ) ? get_post_meta( $post->ID, '_tutor_enable_qa', true ) != 'yes' : false;
2585
2586	// Whether Q&A enabled.
2587	if ( ! $enable_q_and_a_on_course \|\| $disable_qa_for_this_course ) {
2588	if ( tutor_utils()->array_get( 'questions', $items ) ) {
2589	unset( $items['questions'] );
2590	}
2591	}
2592
2593	// Whether announcment enabled.
2594	if ( $disable_course_announcements ) {
2595	if ( tutor_utils()->array_get( 'announcements', $items ) ) {
2596	unset( $items['announcements'] );
2597	}
2598	}
2599
2600	// Hide review section if disabled.
2601	if ( ! get_tutor_option( 'enable_course_review' ) ) {
2602	unset( $items['reviews'] );
2603	}
2604
2605	// Whether enrollment require.
2606	$is_enrolled = tutor_utils()->is_enrolled();
2607
2608	return array_filter(
2609	$items,
2610	function ( $item ) use ( $is_enrolled ) {
2611	if ( isset( $item['require_enrolment'] ) && $item['require_enrolment'] ) {
2612	return $is_enrolled;
2613	}
2614	return true;
2615	}
2616	);
2617	}
2618
2619	/**
2620	* Filter product in shop page
2621	*
2622	* @since 1.4.9
2623	* @return void\|null
2624	*/
2625	public function filter_product_in_shop_page() {
2626	$hide_course_from_shop_page = (bool) get_tutor_option( 'hide_course_from_shop_page' );
2627	if ( ! $hide_course_from_shop_page ) {
2628	return;
2629	}
2630	add_action( 'woocommerce_product_query', array( $this, 'filter_woocommerce_product_query' ) );
2631	add_filter( 'edd_downloads_query', array( $this, 'filter_edd_downloads_query' ), 10, 2 );
2632	add_action( 'pre_get_posts', array( $this, 'filter_archive_meta_query' ), 1 );
2633	}
2634
2635
2636	/**
2637	* Tutor product meta query
2638	*
2639	* @since 1.4.9
2640	* @return array
2641	*/
2642	public function tutor_product_meta_query() {
2643	$meta_query = array(
2644	'key' => '_tutor_product',
2645	'compare' => 'NOT EXISTS',
2646	);
2647	return $meta_query;
2648	}
2649
2650	/**
2651	* Filter product in woocommerce shop page
2652	*
2653	* @since 1.4.9
2654	*
2655	* @param \WP_Query $wp_query WP Query instance.
2656	* @return \WP_Query
2657	*/
2658	public function filter_woocommerce_product_query( $wp_query ) {
2659	$product_ids = $this->get_connected_wc_product_ids();
2660	$wp_query->set( 'post__not_in', $product_ids );
2661	return $wp_query;
2662	}
2663
2664	/**
2665	* Get connected woocommerce product ids for course and course bundle
2666	*
2667	* @since 2.7.2
2668	*
2669	* @return array
2670	*/
2671	public function get_connected_wc_product_ids() {
2672	global $wpdb;
2673
2674	$results = $wpdb->get_results(
2675	$wpdb->prepare(
2676	"SELECT DISTINCT pm.meta_value product_id
2677	FROM {$wpdb->posts} p
2678	INNER JOIN {$wpdb->postmeta} pm ON pm.post_id = p.ID
2679	AND pm.meta_key = %s
2680	WHERE post_type IN( 'courses','course-bundle' )",
2681	'_tutor_course_product_id'
2682	)
2683	);
2684
2685	$ids = array();
2686	if ( is_array( $results ) && count( $results ) ) {
2687	$ids = array_column( $results, 'product_id' );
2688	}
2689
2690	return $ids;
2691	}
2692
2693	/**
2694	* Filter product in edd downloads shortcode page
2695	*
2696	* @since 1.4.9
2697	*
2698	* @param \WP_Query $query WP Query instance.
2699	* @return \WP_Query
2700	*/
2701	public function filter_edd_downloads_query( $query ) {
2702	$query['meta_query'][] = $this->tutor_product_meta_query();
2703	return $query;
2704	}
2705
2706	/**
2707	* Filter product in edd downloads archive page
2708	*
2709	* @since 1.4.9
2710	*
2711	* @param \WP_Query $wp_query WP Query instance.
2712	* @return \WP_Query
2713	*/
2714	public function filter_archive_meta_query( $wp_query ) {
2715	if ( ! is_admin() && $wp_query->is_archive && $wp_query->get( 'post_type' ) === 'download' ) {
2716	$wp_query->set( 'meta_query', array( $this->tutor_product_meta_query() ) );
2717	}
2718	return $wp_query;
2719	}
2720
2721	/**
2722	* Removed course price if already enrolled at single course
2723	*
2724	* @since 1.5.8
2725	*
2726	* @param string $html HTML string.
2727	* @return string
2728	*/
2729	public function remove_price_if_enrolled( $html ) {
2730	$should_removed = apply_filters( 'should_remove_price_if_enrolled', true );
2731
2732	if ( $should_removed ) {
2733	$course_id = get_the_ID();
2734	$enrolled = tutor_utils()->is_enrolled( $course_id );
2735	if ( $enrolled ) {
2736	$html = '';
2737	}
2738	}
2739	return $html;
2740	}
2741
2742	/**
2743	* Check if all lessons and quizzes done before mark course complete.
2744	*
2745	* @since 1.5.8
2746	*
2747	* @param string $html HTML string.
2748	* @return string
2749	*/
2750	public function tutor_lms_hide_course_complete_btn( $html ) {
2751
2752	$completion_mode = tutor_utils()->get_option( 'course_completion_process' );
2753	if ( 'strict' !== $completion_mode ) {
2754	return $html;
2755	}
2756
2757	$completed_lesson = tutor_utils()->get_completed_lesson_count_by_course();
2758	$lesson_count = tutor_utils()->get_lesson_count_by_course();
2759
2760	if ( $completed_lesson < $lesson_count ) {
2761	return '<div class="tutor-alert tutor-warning tutor-mt-28">
2762	<div class="tutor-alert-text">
2763	<span class="tutor-alert-icon tutor-fs-4 tutor-icon-circle-info tutor-mr-12"></span>
2764	<span>' . __( 'Complete all lessons to mark this course as complete', 'tutor' ) . '</span>
2765	</div>
2766	</div>';
2767	}
2768
2769	$quizzes = array();
2770	$assignments = array();
2771
2772	$course_contents = tutor_utils()->get_course_contents_by_id();
2773	if ( tutor_utils()->count( $course_contents ) ) {
2774	foreach ( $course_contents as $content ) {
2775	if ( 'tutor_quiz' === $content->post_type ) {
2776	$quizzes[] = $content;
2777	}
2778	if ( 'tutor_assignments' === $content->post_type ) {
2779	$assignments[] = $content;
2780	}
2781	}
2782	}
2783
2784	$required_assignment_pass = 0;
2785
2786	foreach ( $assignments as $row ) {
2787
2788	$assignment_submission = tutor_utils()->is_assignment_submitted( $row->ID );
2789	$is_reviewed_by_instructor = ! count( $assignment_submission )
2790	? false
2791	: get_comment_meta( $assignment_submission[0]->comment_ID, 'evaluate_time', true );
2792
2793	if ( $assignment_submission && $is_reviewed_by_instructor ) {
2794	$pass_mark = tutor_utils()->get_assignment_option( $row->ID, 'pass_mark' );
2795	$has_passed = false;
2796	foreach ( $assignment_submission as $submission ) {
2797	$given_mark = (int) get_comment_meta( $submission->comment_ID, 'assignment_mark', true );
2798	if ( $given_mark >= $pass_mark ) {
2799	$has_passed = true;
2800	break;
2801	}
2802	}
2803	if ( ! $has_passed ) {
2804	$required_assignment_pass++;
2805	}
2806	} else {
2807	$required_assignment_pass++;
2808	}
2809	}
2810
2811	$is_quiz_pass = true;
2812	$required_quiz_pass = 0;
2813
2814	if ( tutor_utils()->count( $quizzes ) ) {
2815	foreach ( $quizzes as $quiz ) {
2816
2817	$attempt = tutor_utils()->get_quiz_attempt( $quiz->ID );
2818	if ( $attempt ) {
2819	$passing_grade = tutor_utils()->get_quiz_option( $quiz->ID, 'passing_grade', 0 );
2820	$earned_percentage = QuizModel::calculate_attempt_earned_percentage( $attempt );
2821
2822	if ( $earned_percentage < $passing_grade ) {
2823	$required_quiz_pass++;
2824	$is_quiz_pass = false;
2825	}
2826	} else {
2827	$required_quiz_pass++;
2828	$is_quiz_pass = false;
2829	}
2830	}
2831	}
2832
2833	if ( ! $is_quiz_pass \|\| $required_assignment_pass > 0 ) {
2834	$_msg = '';
2835	$quiz_str = _n( 'quiz', 'quizzes', $required_quiz_pass, 'tutor' );
2836	$assignment_str = _n( 'assignment', 'assignments', $required_assignment_pass, 'tutor' );
2837
2838	if ( ! $is_quiz_pass && 0 == $required_assignment_pass ) {
2839	/* translators: %1$s: number of quiz/assignment pass required; %2$s: quiz/assignment string */
2840	$_msg = sprintf( __( 'You have to pass %1$s %2$s to complete this course.', 'tutor' ), $required_quiz_pass, $quiz_str );
2841	}
2842
2843	if ( $is_quiz_pass && $required_assignment_pass > 0 ) {
2844	//phpcs:ignore
2845	$_msg = sprintf( __( 'You have to pass %1$s %2$s to complete this course.', 'tutor' ), $required_assignment_pass, $assignment_str );
2846	}
2847
2848	if ( ! $is_quiz_pass && $required_assignment_pass > 0 ) {
2849	/* translators: %1$s: number of quiz pass required; %2$s: quiz string; %3$s: number of assignment pass required; %4$s: assignment string */
2850	$_msg = sprintf( __( 'You have to pass %1$s %2$s and %3$s %4$s to complete this course.', 'tutor' ), $required_quiz_pass, $quiz_str, $required_assignment_pass, $assignment_str );
2851	}
2852
2853	return '<div class="tutor-alert tutor-warning tutor-mt-28">
2854	<div class="tutor-alert-text">
2855	<span class="tutor-alert-icon tutor-fs-4 tutor-icon-circle-info tutor-mr-12"></span>
2856	<span>' . $_msg . '</span>
2857	</div>
2858	</div>';
2859	}
2860
2861	return $html;
2862	}
2863
2864	/**
2865	* Generate Gradebook
2866	*
2867	* @since 1.5.8
2868	*
2869	* @param string $html HTML string.
2870	* @return string
2871	*/
2872	public function get_generate_greadbook( $html ) {
2873	if ( ! tutor_utils()->is_completed_course() ) {
2874	return '';
2875	}
2876	return $html;
2877	}
2878
2879	/**
2880	* Add social share content in header
2881	*
2882	* @since 1.6.3
2883	* @return void
2884	*/
2885	public function social_share_content() {
2886	global $wp_query, $post;
2887	if ( $wp_query->is_single && ! empty( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] === $this->course_post_type ) { ?>
2888	<!--Facebook-->
2889	<meta property="og:type" content="website"/>
2890	<meta property="og:image" content="<?php echo esc_url( get_tutor_course_thumbnail_src() ); ?>" />
2891	<meta property="og:description" content="<?php echo esc_html( $post->post_content ); ?>" />
2892	<!--Twitter-->
2893	<meta name="twitter:image" content="<?php echo esc_url( get_tutor_course_thumbnail_src() ); ?>">
2894	<meta name="twitter:description" content="<?php echo esc_html( $post->post_content ); ?>">
2895	<!--Google+-->
2896	<meta itemprop="image" content="<?php echo esc_url( get_tutor_course_thumbnail_src() ); ?>">
2897	<meta itemprop="description" content="<?php echo esc_html( $post->post_content ); ?>">
2898	<?php
2899	}
2900	}
2901
2902	/**
2903	* Delete associated enrollment
2904	*
2905	* @since 1.8.2
2906	*
2907	* @param integer $post_id post ID.
2908	* @return void
2909	*/
2910	public function delete_associated_enrollment( $post_id ) {
2911	global $wpdb;
2912
2913	$enroll_id = $wpdb->get_var(
2914	$wpdb->prepare(
2915	"SELECT
2916	post_id
2917	FROM
2918	{$wpdb->postmeta}
2919	WHERE
2920	meta_key='_tutor_enrolled_by_order_id'
2921	AND meta_value = %d
2922	",
2923	$post_id
2924	)
2925	);
2926
2927	if ( is_numeric( $enroll_id ) && $enroll_id > 0 ) {
2928
2929	$course_id = get_post_field( 'post_parent', $enroll_id );
2930	$user_id = get_post_field( 'post_author', $enroll_id );
2931
2932	tutor_utils()->cancel_course_enrol( $course_id, $user_id );
2933	}
2934	}
2935
2936	/**
2937	* Reset course progress.
2938	*
2939	* @since 1.5.8
2940	* @return void
2941	*/
2942	public function tutor_reset_course_progress() {
2943	tutor_utils()->checking_nonce();
2944	$course_id = Input::post( 'course_id' );
2945
2946	if ( ! $course_id \|\| ! is_numeric( $course_id ) \|\| ! tutor_utils()->is_enrolled( $course_id ) ) {
2947	wp_send_json_error( array( 'message' => __( 'Invalid Course ID or Access Denied.', 'tutor' ) ) );
2948	return;
2949	}
2950
2951	tutor_utils()->delete_course_progress( $course_id );
2952	wp_send_json_success( array( 'redirect_to' => tutor_utils()->get_course_first_lesson( $course_id ) ) );
2953	}
2954
2955	/**
2956	* Do enroll if guest attempt to enroll and course is free
2957	*
2958	* @since 1.9.8
2959	*
2960	* @param integer $course_id course ID.
2961	* @param integer $user_id user ID.
2962
2963	* @return void
2964	*/
2965	public function enroll_after_login_if_attempt( int $course_id, int $user_id ) {
2966	$course_id = sanitize_text_field( $course_id );
2967	$is_allowed = apply_filters( 'tutor_allow_guest_attempt_enrollment', true, $course_id, $user_id );
2968
2969	if ( $course_id && $is_allowed ) {
2970	$is_purchasable = tutor_utils()->is_course_purchasable( $course_id );
2971	if ( ! $is_purchasable ) {
2972	tutor_utils()->do_enroll( $course_id, $order_id = 0, $user_id );
2973	do_action( 'guest_attempt_after_enrollment', $course_id );
2974	}
2975	}
2976	}
2977
2978	/**
2979	* Handle course enrollment
2980	*
2981	* @since 2.1.0
2982	* @return void
2983	*/
2984	public function course_enrollment() {
2985	tutor_utils()->checking_nonce();
2986
2987	$course_id = Input::post( 'course_id', 0, Input::TYPE_INT );
2988	$user_id = get_current_user_id();
2989
2990	if ( $course_id ) {
2991	$password_protected = post_password_required( $course_id );
2992	if ( $password_protected ) {
2993	wp_send_json_error( __( 'This course is password protected', 'tutor' ) );
2994	}
2995	$enroll = tutor_utils()->do_enroll( $course_id, 0, $user_id );
2996	if ( $enroll ) {
2997	wp_send_json_success( __( 'Enrollment successfully done!', 'tutor' ) );
2998	} else {
2999	wp_send_json_error( __( 'Enrollment failed, please try again!', 'tutor' ) );
3000	}
3001	} else {
3002	wp_send_json_error( __( 'Invalid course ID', 'tutor' ) );
3003	}
3004	}
3005
3006	/**
3007	* After trash a course direct to the course list page
3008	*
3009	* @since 2.1.7
3010	*
3011	* @param integer $post_id int course id.
3012	*
3013	* @return void
3014	*/
3015	public static function redirect_to_course_list_page( int $post_id ): void {
3016	$post = get_post( $post_id );
3017	if ( tutor()->course_post_type === $post->post_type ) {
3018	$is_gutenberg_enabled = tutor_utils()->get_option( 'enable_gutenberg_course_edit' );
3019	if ( ! $is_gutenberg_enabled ) {
3020	wp_safe_redirect( admin_url( 'admin.php?page=tutor' ) );
3021	exit;
3022	}
3023	}
3024	}
3025
3026	/**
3027	* Create or update WooCommerce product
3028	*
3029	* If product id not set it will create new one.
3030	*
3031	* @since 2.2.0
3032	*
3033	* @param string $title product title.
3034	* @param string $reg_price product price.
3035	* @param string $sale_price product sale price.
3036	* @param int $product_id product ID.
3037	* @param string $status product status.
3038	*
3039	* @return integer Product id or return 0 if WC not exists
3040	*/
3041	public static function create_wc_product( $title, $reg_price, $sale_price, $product_id = 0, $status = 'publish' ) {
3042	if ( ! tutor_utils()->has_wc() ) {
3043	return 0;
3044	}
3045
3046	$product_obj = new \WC_Product();
3047	if ( $product_id ) {
3048	$product_obj = wc_get_product( $product_id );
3049	}
3050
3051	$product_obj->set_name( $title );
3052	$product_obj->set_status( $status );
3053	$product_obj->set_price( $reg_price );
3054	$product_obj->set_regular_price( $reg_price );
3055
3056	if ( $sale_price > 0 ) {
3057	$product_obj->set_sale_price( $sale_price );
3058	} else {
3059	$product_obj->set_sale_price( null );
3060	}
3061
3062	$product_obj->set_sold_individually( true );
3063
3064	return $product_obj->save();
3065	}
3066
3067	/**
3068	* Get course/bundle mini info
3069	*
3070	* @since 3.0.0
3071	*
3072	* @param object $post Course or bundle post.
3073	*
3074	* @return array
3075	*/
3076	public static function get_mini_info( object $post ) {
3077	$is_purchasable = tutor_utils()->is_course_purchasable( $post->ID );
3078	$course_price = tutor_utils()->get_raw_course_price( $post->ID );
3079	$regular_price = tutor_get_formatted_price( $course_price->regular_price );
3080	$sale_price = ! empty( $course_price->sale_price ) ? tutor_get_formatted_price( $course_price->sale_price ) : null;
3081
3082	$info = array(
3083	'id' => $post->ID,
3084	'title' => $post->post_title,
3085	'image' => get_tutor_course_thumbnail_src( 'post-thumbnail', $post->ID ),
3086	'is_purchasable' => $is_purchasable,
3087	'regular_price' => $regular_price,
3088	'sale_price' => $sale_price,
3089	);
3090
3091	$card_data = apply_filters( 'tutor_course_mini_info', $info, $post );
3092
3093	return $card_data;
3094	}
3095
3096	/**
3097	* Get course/bundle card data
3098	*
3099	* This method will return all data that contain in
3100	* course card
3101	*
3102	* @since 3.0.0
3103	*
3104	* @param object $post Course or bundle post.
3105	*
3106	* @return array
3107	*/
3108	public static function get_card_data( object $post ) {
3109	$info = self::get_mini_info( $post );
3110
3111	$info['last_updated'] = tutor_i18n_get_formated_date( $post->post_modified_at );
3112	$info['course_duration'] = tutor_utils()->get_course_duration( $post->ID, false );
3113	$info['total_enrolled'] = tutor_utils()->count_enrolled_users_by_course( $post->ID );
3114
3115	$card_data = apply_filters( 'tutor_course_card_data', $info, $post );
3116
3117	return $card_data;
3118	}
3119
3120	/**
3121	* Filter user list access for instructor
3122	*
3123	* @since 3.0.0
3124	*
3125	* @param bool $access access.
3126	*
3127	* @return bool
3128	*/
3129	public function user_list_access_for_instructor( $access ) {
3130	$is_instructor = User::is_instructor();
3131	return $access \|\| $is_instructor;
3132	}
3133
3134	/**
3135	* Filter user list args for instructor
3136	*
3137	* @since 3.0.0
3138	*
3139	* @param array $args args.
3140	*
3141	* @return array
3142	*/
3143	public function user_list_args_for_instructor( $args ) {
3144	if ( User::is_instructor() ) {
3145	if ( isset( $args['fields'] ) && isset( $args['fields']['user_email'] ) ) {
3146	unset( $args['fields']['user_email'] );
3147	}
3148	}
3149
3150	$filter = json_decode( wp_unslash( $_POST['filter'] ?? '{}' ) );//phpcs:ignore
3151	if ( isset( $filter->role ) && is_array( $filter->role ) ) {
3152	$args['role__in'] = array_map( 'sanitize_text_field', $filter->role );
3153	}
3154
3155	return $args;
3156	}
3157
3158	/**
3159	* Get a list of possible course status.
3160	*
3161	* @since 3.6.2
3162	*
3163	* @return array
3164	*/
3165	public static function course_status_list() {
3166	return array(
3167	'publish',
3168	'private',
3169	'draft',
3170	'trash',
3171	'pending',
3172	'future',
3173	);
3174	}
3175
3176	/**
3177	* Link a course/bundle post to a WooCommerce product.
3178	*
3179	* @since 3.8.2
3180	*
3181	* @param int $post_ID The WordPress post ID of the course.
3182	* @param int $product_id The WooCommerce product ID to associate with the course.
3183	* @return void
3184	*/
3185	public static function sync_course_with_wc_product( $post_ID, $product_id ) {
3186
3187	update_post_meta( $post_ID, self::COURSE_PRODUCT_ID_META, $product_id );
3188
3189	// Mark product for woocommerce.
3190	update_post_meta( $product_id, '_virtual', 'yes' );
3191	update_post_meta( $product_id, '_tutor_product', 'yes' );
3192	}
3193
3194	/**
3195	* Map Tutor's course prices to WooCommerce.
3196	*
3197	* @since 3.8.2
3198	*
3199	* @param int $post_ID The WordPress post ID of the course.
3200	* @param string\|int\|float $regular_price The regular price.
3201	* @param string\|int\|float $sale_price The sale price.
3202	* @return void
3203	*/
3204	private static function set_course_regular_and_sale_price( $post_ID, $regular_price, $sale_price ) {
3205
3206	// Set course regular & sale price.
3207	update_post_meta( $post_ID, self::COURSE_PRICE_META, $regular_price );
3208	update_post_meta( $post_ID, self::COURSE_SALE_PRICE_META, $sale_price );
3209	}
3210	}
3211