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<?php
namespace PrestoPlayer\Integrations\Lifter;
use PrestoPlayer\Models\Player;
/**
* Lifter LMS integration.
*/
class Lifter {
/**
* Register actions and filters.
*
* @return void
*/
public function register() {
// wait for plugin to be loaded.
add_action( 'plugins_loaded', array( $this, 'addFilters' ) );
add_filter( 'presto_player_load_js', array( $this, 'maybeLoadScripts' ) );
}
/**
* Load scripts if it is a LifterLMS ( lesson,Quiz,Course ) page.
*/
public function maybeLoadScripts( $has_player ) {
if ( function_exists( 'is_lifterlms' ) && is_lifterlms() ) {
return true;
}
return $has_player;
}
/**
* Add filters needed for LifterLMS
*/
public function addFilters() {
// plugins are not active
if ( ! $this->lifterPluginsActive() ) {
return;
}
// display video progress on student table.
add_filter( 'llms_table_get_data_student-course', array( $this, 'displayVideoCompletionData' ), 11, 5 );
// adding islesson attribute to our script.
add_filter( 'presto-settings-block-js-options', array( $this, 'addLifterIsLesson' ) );
// turn on autoplay and checks if it on lesson page or not.
add_filter( 'presto_player/block/default_attributes', array( $this, 'maybeTurnOnAutoplay' ) );
}
/**
* Are the lifter plugins active?
*
* @return boolean
*/
public function lifterPluginsActive() {
return is_plugin_active( 'lifterlms-advanced-videos/lifterlms-advanced-videos.php' ) && is_plugin_active( 'lifterlms/lifterlms.php' );
}
/**
* Is the lifterLMS autoplay on?
*
* @return boolean
*/
public function isLifterAutoplayOn() {
return 'no' !== get_option( 'llms_av_prog_auto_play', 'no' );
}
/**
* Are we on a lesson page.
*
* @return boolean
*/
public function isLessonPage() {
return function_exists( 'is_lesson' ) && is_lesson();
}
/**
* Override our player to turn on autoplay
* if enabled on LifterLMS settings.
*
* @param array $attributes Block attributes.
* @return array
*/
public function maybeTurnOnAutoplay( $attributes ) {
if ( $this->isLessonPage() && $this->isLifterAutoplayOn() ) {
$attributes['autoplay'] = true;
}
return $attributes;
}
/**
* Send whether it's a lifter lesson
*
* @param array $attributes Block attributes.
* @return array
*/
public function addLifterIsLesson( $attributes ) {
if ( $this->isLessonPage() ) {
$attributes['lifter']['isLesson'] = true;
}
return $attributes;
}
/**
* Does the post have a player?
*
* @param integer $id Post id.
* @return boolean
*/
public function hasPlayer( $id ) {
return player::postHasPlayer( $id );
}
/**
* Get the student id.
*
* @return integer
*/
public function getStudentId() {
return llms_filter_input( INPUT_GET, 'student_id', FILTER_SANITIZE_NUMBER_INT );
}
/**
* Render the progress bar
*
* @return void
*/
public function renderProgressBar( $table, $value ) {
return $table->get_progress_bar_html( $value );
}
/**
* Has the student completed the video?
*
* @param integer $student_id Student ID
* @param integer $lesson_id Lesson ID
* @return boolean
*/
public function hasStudentHasCompletedVideo( $student_id, $lesson_id ) {
return (bool) llms_av_has_user_completed_video( $student_id, $lesson_id );
}
/**
* Get the student's current progress.
*
* @param integer $student_id Student ID
* @param integer $lesson_id Lesson ID
* @return number
*/
public function getStudentProgress( $student_id, $lesson_id ) {
$event = llms_av_get_last_user_video_progress_event( $student_id, $lesson_id );
if ( $event ) {
$duration = $event->get_meta( 'duration' );
if ( $duration = $event->get_meta( 'duration' ) ) {
$ts = $event->get_meta( 'ts' ) ? $event->get_meta( 'ts' ) : 0;
$value = LLMS()->grades()->round( ( $ts / $duration ) ) * 100;
return $value;
}
}
return null;
}
/**
* Displays video completion data on the
* student table.
*
* @param string $value Value to display.
* @param string $key Column name
* @param \LLMS_Lesson $lesson LifterLMS Lesson Object
* @param mixed $context Context.
* @param \LLMS_Table_Student_Course $table Table object.
* @return void
*/
public function displayVideoCompletionData( $value, $key, $lesson, $context, $table ) {
// bail if not the video column.
if ( 'video' !== $key ) {
return $value;
}
if ( ! isset( $lesson ) ) {
return $value;
}
// get the lesson id.
$lesson_id = $lesson->post->ID;
if ( empty( $lesson_id ) ) {
return $value;
}
// Bail if lesson does not contain a Presto Player.
if ( ! $this->hasPlayer( $lesson_id ) ) {
return $value;
}
// get the student id.
if ( ! $student_id = $this->getStudentId() ) {
return $value;
}
// show the progress bar at 100% is user completed video.
if ( $this->hasStudentHasCompletedVideo( $student_id, $lesson_id ) ) {
return $this->renderProgressBar( $table, 100 );
}
// show progress bar if user has progress.
if ( $progress = $this->getStudentProgress( $student_id, $lesson_id ) ) {
return $this->renderProgressBar( $table, $progress );
}
// return default value.
return $value;
}
}