| Current File : /home/getxxhzo/xpertbee.com/wp-content/plugins/tutor/models/CourseModel.php |
<?php
/**
* Course Model
*
* @package Tutor\Models
* @author Themeum <support@themeum.com>
* @link https://themeum.com
* @since 2.0.6
*/
namespace Tutor\Models;
use Tutor\Helpers\QueryHelper;
/**
* CourseModel Class
*
* @since 2.0.6
*/
class CourseModel {
/**
* WordPress course type name
*
* @var string
*/
const POST_TYPE = 'courses';
const STATUS_PUBLISH = 'publish';
const STATUS_DRAFT = 'draft';
const STATUS_AUTO_DRAFT = 'auto-draft';
const STATUS_PENDING = 'pending';
const STATUS_PRIVATE = 'private';
const STATUS_FUTURE = 'future';
/**
* Course completion modes
*/
const MODE_FLEXIBLE = 'flexible';
const MODE_STRICT = 'strict';
/**
* Course mapped with the product using this meta key
*
* @var string
*/
const WC_PRODUCT_META_KEY = '_tutor_course_product_id';
/**
* Course attachment/downloadable resources meta key
*
* @var string
*/
const ATTACHMENT_META_KEY = '_tutor_attachments';
/**
* Course benefits meta key
*
* @var string
*/
const BENEFITS_META_KEY = '_tutor_course_benefits';
/**
* Course record count
*
* @since 2.0.7
*
* @param string $status course status.
* @return int
*/
public static function count( $status = self::STATUS_PUBLISH ) {
$count_obj = wp_count_posts( self::POST_TYPE );
if ( 'all' === $status ) {
return array_sum( (array) $count_obj );
}
return (int) $count_obj->{$status};
}
/**
* Get courses
*
* @since 1.0.0
*
* @param array $excludes exclude course ids.
* @param array $post_status post status array.
*
* @return array|null|object
*/
public static function get_courses( $excludes = array(), $post_status = array( 'publish' ) ) {
global $wpdb;
$excludes = (array) $excludes;
$exclude_query = '';
if ( count( $excludes ) ) {
$exclude_query = implode( "','", $excludes );
}
$post_status = array_map(
function ( $element ) {
return "'" . $element . "'";
},
$post_status
);
$post_status = implode( ',', $post_status );
$course_post_type = tutor()->course_post_type;
//phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$query = $wpdb->get_results(
$wpdb->prepare(
"SELECT ID,
post_author,
post_title,
post_name,
post_status,
menu_order
FROM {$wpdb->posts}
WHERE post_status IN ({$post_status})
AND ID NOT IN('$exclude_query')
AND post_type = %s;
",
$course_post_type
)
);
//phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
return $query;
}
/**
* Get course count by instructor
*
* @since 1.0.0
*
* @param int $instructor_id instructor ID.
*
* @return null|string
*/
public static function get_course_count_by_instructor( $instructor_id ) {
global $wpdb;
$course_post_type = tutor()->course_post_type;
$count = $wpdb->get_var(
$wpdb->prepare(
"SELECT COUNT(ID)
FROM {$wpdb->posts}
INNER JOIN {$wpdb->usermeta}
ON user_id = %d
AND meta_key = %s
AND meta_value = ID
WHERE post_status = %s
AND post_type = %s;
",
$instructor_id,
'_tutor_instructor_course_id',
'publish',
$course_post_type
)
);
return $count;
}
/**
* Get course by quiz
*
* @since 1.0.0
*
* @param int $quiz_id quiz id.
*
* @return array|bool|null|object|void
*/
public static function get_course_by_quiz( $quiz_id ) {
$quiz_id = tutils()->get_post_id( $quiz_id );
$post = get_post( $quiz_id );
if ( $post ) {
$course = get_post( $post->post_parent );
if ( $course ) {
if ( tutor()->course_post_type !== $course->post_type ) {
$course = get_post( $course->post_parent );
}
return $course;
}
}
return false;
}
/**
* Get courses by a instructor
*
* @since 1.0.0
*
* @param integer $instructor_id instructor id.
* @param array|string $post_status post status.
* @param integer $offset offset.
* @param integer $limit limit.
* @param boolean $count_only count or not.
*
* @return array|null|object
*/
public static function get_courses_by_instructor( $instructor_id = 0, $post_status = array( 'publish' ), int $offset = 0, int $limit = PHP_INT_MAX, $count_only = false ) {
global $wpdb;
$offset = sanitize_text_field( $offset );
$limit = sanitize_text_field( $limit );
$instructor_id = tutils()->get_user_id( $instructor_id );
$course_post_type = tutor()->course_post_type;
if ( empty( $post_status ) || 'any' == $post_status ) {
$where_post_status = '';
} else {
! is_array( $post_status ) ? $post_status = array( $post_status ) : 0;
$statuses = "'" . implode( "','", $post_status ) . "'";
$where_post_status = "AND $wpdb->posts.post_status IN({$statuses}) ";
}
$select_col = $count_only ? " COUNT(DISTINCT $wpdb->posts.ID) " : " $wpdb->posts.* ";
$limit_offset = $count_only ? '' : " LIMIT $offset, $limit ";
//phpcs:disable
$query = $wpdb->prepare(
"SELECT $select_col
FROM $wpdb->posts
LEFT JOIN {$wpdb->usermeta}
ON $wpdb->usermeta.user_id = %d
AND $wpdb->usermeta.meta_key = %s
AND $wpdb->usermeta.meta_value = $wpdb->posts.ID
WHERE 1 = 1 {$where_post_status}
AND $wpdb->posts.post_type = %s
AND ($wpdb->posts.post_author = %d OR $wpdb->usermeta.user_id = %d)
ORDER BY $wpdb->posts.post_date DESC $limit_offset",
$instructor_id,
'_tutor_instructor_course_id',
$course_post_type,
$instructor_id,
$instructor_id
);
//phpcs:enable
//phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
return $count_only ? $wpdb->get_var( $query ) : $wpdb->get_results( $query, OBJECT );
}
/**
* Get courses for instructors
*
* @since 1.0.0
*
* @param int $instructor_id Instructor ID.
* @return array|null|object
*/
public function get_courses_for_instructors( $instructor_id = 0 ) {
$instructor_id = tutor_utils()->get_user_id( $instructor_id );
$course_post_type = tutor()->course_post_type;
$courses = get_posts(
array(
'post_type' => $course_post_type,
'author' => $instructor_id,
'post_status' => array( 'publish', 'pending' ),
'posts_per_page' => 5,
)
);
return $courses;
}
/**
* Check a user is main instructor of a course
*
* @since 2.1.6
*
* @param integer $course_id course id.
* @param integer $user_id instructor id ( optional ) default: current user id.
*
* @return boolean
*/
public static function is_main_instructor( $course_id, $user_id = 0 ) {
$course = get_post( $course_id );
$user_id = tutor_utils()->get_user_id( $user_id );
if ( ! $course || self::POST_TYPE !== $course->post_type || $user_id !== (int) $course->post_author ) {
return false;
}
return true;
}
/**
* Mark the course as completed
*
* @since 2.0.7
*
* @param int $course_id course id which is completed.
* @param int $user_id student id who completed the course.
*
* @return bool
*/
public static function mark_course_as_completed( $course_id, $user_id ) {
if ( ! $course_id || ! $user_id ) {
return false;
}
do_action( 'tutor_course_complete_before', $course_id );
/**
* Marking course completed at Comment.
*/
global $wpdb;
$date = date( 'Y-m-d H:i:s', tutor_time() ); //phpcs:ignore
// Making sure that, hash is unique.
do {
$hash = substr( md5( wp_generate_password( 32 ) . $date . $course_id . $user_id ), 0, 16 );
$has_hash = (int) $wpdb->get_var(
$wpdb->prepare(
"SELECT COUNT(comment_ID) from {$wpdb->comments}
WHERE comment_agent = 'TutorLMSPlugin' AND comment_type = 'course_completed' AND comment_content = %s ",
$hash
)
);
} while ( $has_hash > 0 );
$data = array(
'comment_post_ID' => $course_id,
'comment_author' => $user_id,
'comment_date' => $date,
'comment_date_gmt' => get_gmt_from_date( $date ),
'comment_content' => $hash, // Identification Hash.
'comment_approved' => 'approved',
'comment_agent' => 'TutorLMSPlugin',
'comment_type' => 'course_completed',
'user_id' => $user_id,
);
$wpdb->insert( $wpdb->comments, $data );
do_action( 'tutor_course_complete_after', $course_id, $user_id );
return true;
}
/**
* Delete a course by ID
*
* @since 2.0.9
*
* @param int $post_id course id that need to delete.
* @return bool
*/
public static function delete_course( $post_id ) {
if ( get_post_type( $post_id ) !== tutor()->course_post_type ) {
return false;
}
wp_delete_post( $post_id, true );
return true;
}
/**
* Get post ids by post type and parent_id
*
* @since 1.6.6
*
* @param string $post_type post type.
* @param integer $post_parent post parent ID.
*
* @return array
*/
private function get_post_ids( $post_type, $post_parent ) {
$args = array(
'fields' => 'ids',
'post_type' => $post_type,
'post_parent' => $post_parent,
'post_status' => 'any',
'posts_per_page' => -1,
);
return get_posts( $args );
}
/**
* Delete course data when permanently deleting a course.
*
* @since 1.6.6
* @since 2.0.9 updated
*
* @param integer $post_id post ID.
* @return bool
*/
public function delete_course_data( $post_id ) {
$course_post_type = tutor()->course_post_type;
if ( get_post_type( $post_id ) !== $course_post_type ) {
return false;
}
global $wpdb;
$lesson_post_type = tutor()->lesson_post_type;
$assignment_post_type = tutor()->assignment_post_type;
$quiz_post_type = tutor()->quiz_post_type;
$topic_ids = $this->get_post_ids( 'topics', $post_id );
// Course > Topic > ( Lesson | Quiz | Assignment ).
if ( ! empty( $topic_ids ) ) {
foreach ( $topic_ids as $topic_id ) {
$content_post_type = array( $lesson_post_type, $assignment_post_type, $quiz_post_type );
$topic_content_ids = $this->get_post_ids( $content_post_type, $topic_id );
foreach ( $topic_content_ids as $content_id ) {
/**
* Delete Quiz data
*/
if ( get_post_type( $content_id ) === 'tutor_quiz' ) {
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempts', array( 'quiz_id' => $content_id ) );
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_attempt_answers', array( 'quiz_id' => $content_id ) );
$questions_ids = $wpdb->get_col( $wpdb->prepare( "SELECT question_id FROM {$wpdb->prefix}tutor_quiz_questions WHERE quiz_id = %d ", $content_id ) );
if ( is_array( $questions_ids ) && count( $questions_ids ) ) {
$in_question_ids = "'" . implode( "','", $questions_ids ) . "'";
//phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$wpdb->query( "DELETE FROM {$wpdb->prefix}tutor_quiz_question_answers WHERE belongs_question_id IN({$in_question_ids}) " );
}
$wpdb->delete( $wpdb->prefix . 'tutor_quiz_questions', array( 'quiz_id' => $content_id ) );
}
/**
* Delete assignment data ( Assignments, Assignment Submit, Assignment Evalutation )
*
* @since 2.0.9
*/
if ( get_post_type( $content_id ) === $assignment_post_type ) {
QueryHelper::delete_comment_with_meta(
array(
'comment_type' => 'tutor_assignment',
'comment_post_ID' => $content_id,
)
);
}
wp_delete_post( $content_id, true );
}
// Delete zoom meeting.
$wpdb->delete(
$wpdb->posts,
array(
'post_parent' => $topic_id,
'post_type' => 'tutor_zoom_meeting',
)
);
/**
* Delete Google Meet Record Related to Course Topic
*
* @since 2.1.0
*/
$wpdb->delete(
$wpdb->posts,
array(
'post_parent' => $topic_id,
'post_type' => 'tutor-google-meet',
)
);
wp_delete_post( $topic_id, true );
}
}
$child_post_ids = $this->get_post_ids( array( 'tutor_announcements', 'tutor_enrolled', 'tutor_zoom_meeting', 'tutor-google-meet' ), $post_id );
if ( ! empty( $child_post_ids ) ) {
foreach ( $child_post_ids as $child_post_id ) {
wp_delete_post( $child_post_id, true );
}
}
/**
* Delete earning, gradebook result, course complete data
*
* @since 2.0.9
*/
$wpdb->delete( $wpdb->prefix . 'tutor_earnings', array( 'course_id' => $post_id ) );
$wpdb->delete( $wpdb->prefix . 'tutor_gradebooks_results', array( 'course_id' => $post_id ) );
$wpdb->delete(
$wpdb->comments,
array(
'comment_type' => 'course_completed',
'comment_post_ID' => $post_id,
)
);
/**
* Delete onsite notification record & _tutor_instructor_course_id user meta
*
* @since 2.1.0
*/
$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}tutor_notifications WHERE post_id=%d AND type IN ('Announcements','Q&A','Enrollments')", $post_id ) );
$wpdb->delete(
$wpdb->usermeta,
array(
'meta_key' => '_tutor_instructor_course_id',
'meta_value' => $post_id,
)
);
/**
* Delete Course rating and review
*
* @since 2.0.9
*/
QueryHelper::delete_comment_with_meta(
array(
'comment_type' => 'tutor_course_rating',
'comment_post_ID' => $post_id,
)
);
/**
* Delete Q&A and its status ( read, replied etc )
*
* @since 2.0.9
*/
QueryHelper::delete_comment_with_meta(
array(
'comment_type' => 'tutor_q_and_a',
'comment_post_ID' => $post_id,
)
);
/**
* Delete caches
*/
$attempt_cache = new \Tutor\Cache\QuizAttempts();
if ( $attempt_cache->has_cache() ) {
$attempt_cache->delete_cache();
}
return true;
}
/**
* Get paid courses
*
* To identify course is connected with any product
* like WC Product or EDD product meta key will be used
*
* @since 2.2.0
*
* @param string $meta_key course product id meta key.
* @param array $args wp_query args.
*
* @return array
*/
public static function get_paid_courses( string $meta_key, array $args = array() ): array {
$current_user = wp_get_current_user();
$default_args = array(
'post_type' => 'courses',
'post_status' => 'publish',
'no_found_rows' => true,
'posts_per_page' => -1,
'relation' => 'AND',
'meta_query' => array(
array(
'key' => sanitize_text_field( $meta_key ),
'value' => 0,
'compare' => '!=',
'type' => 'NUMERIC',
),
),
);
// Check if the current user is an admin.
if ( ! current_user_can( 'administrator' ) ) {
$args['author'] = $current_user->ID;
}
$query = new \WP_Query( wp_parse_args( $args, $default_args ) );
if ( $query->have_posts() ) {
return $query->posts;
}
return array();
}
/**
* Check the course is completeable or not
*
* @since 2.4.0
*
* @param int $course_id course id.
* @param int $user_id user id.
*
* @return boolean
*/
public static function can_complete_course( $course_id, $user_id ) {
$mode = tutor_utils()->get_option( 'course_completion_process' );
if ( self::MODE_FLEXIBLE === $mode ) {
return true;
}
if ( self::MODE_STRICT === $mode ) {
$completed_lesson = tutor_utils()->get_completed_lesson_count_by_course( $course_id, $user_id );
$lesson_count = tutor_utils()->get_lesson_count_by_course( $course_id, $user_id );
if ( $completed_lesson < $lesson_count ) {
return false;
}
$quizzes = array();
$assignments = array();
$course_contents = tutor_utils()->get_course_contents_by_id( $course_id );
if ( tutor_utils()->count( $course_contents ) ) {
foreach ( $course_contents as $content ) {
if ( 'tutor_quiz' === $content->post_type ) {
$quizzes[] = $content;
}
if ( 'tutor_assignments' === $content->post_type ) {
$assignments[] = $content;
}
}
}
foreach ( $quizzes as $row ) {
$result = QuizModel::get_quiz_result( $row->ID );
if ( 'pass' !== $result ) {
return false;
}
}
if ( tutor()->has_pro ) {
foreach ( $assignments as $row ) {
$result = \TUTOR_ASSIGNMENTS\Assignments::get_assignment_result( $row->ID, $user_id );
if ( 'pass' !== $result ) {
return false;
}
}
}
return true;
}
return false;
}
/**
* Check a course can be auto complete by an enrolled student.
*
* @since 2.4.0
*
* @param int $course_id course id.
* @param int $user_id user id.
*
* @return boolean
*/
public static function can_autocomplete_course( $course_id, $user_id ) {
$auto_course_complete_option = (bool) tutor_utils()->get_option( 'auto_course_complete_on_all_lesson_completion' );
if ( ! $auto_course_complete_option ) {
return false;
}
$is_course_completed = tutor_utils()->is_completed_course( $course_id, $user_id );
if ( $is_course_completed ) {
return false;
}
$course_stats = tutor_utils()->get_course_completed_percent( $course_id, $user_id, true );
if ( $course_stats['total_count'] && $course_stats['completed_count'] === $course_stats['total_count'] ) {
return self::can_complete_course( $course_id, $user_id );
} else {
return false;
}
}
/**
* Get review progress link when course progress 100% and
* User has pending or fail quiz or assignment
*
* @since 2.4.0
*
* @param int $course_id course id.
* @param int $user_id user id.
*
* @return string course content permalink.
*/
public static function get_review_progress_link( $course_id, $user_id ) {
$course_progress = tutor_utils()->get_course_completed_percent( $course_id, $user_id, true );
$completed_percent = (int) $course_progress['completed_percent'];
$course_contents = tutor_utils()->get_course_contents_by_id( $course_id );
$permalink = '';
if ( tutor_utils()->count( $course_contents ) && 100 === $completed_percent ) {
foreach ( $course_contents as $content ) {
if ( 'tutor_quiz' === $content->post_type ) {
$result = QuizModel::get_quiz_result( $content->ID, $user_id );
if ( 'pass' !== $result ) {
$permalink = get_the_permalink( $content->ID );
break;
}
}
if ( tutor()->has_pro && 'tutor_assignments' === $content->post_type ) {
$result = \TUTOR_ASSIGNMENTS\Assignments::get_assignment_result( $content->ID, $user_id );
if ( 'pass' !== $result ) {
$permalink = get_the_permalink( $content->ID );
break;
}
}
}
}
// Fallback link.
if ( empty( $permalink ) ) {
$permalink = tutils()->get_course_first_lesson( $course_id );
}
return $permalink;
}
}