<?php
/**
* File containing the class Sensei_Course_Manual_Enrolment_Provider.
*
* @package sensei
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Course enrolment provider for manually enrolling learners.
*
* @since 3.0.0
*/
class Sensei_Course_Manual_Enrolment_Provider extends Sensei_Course_Enrolment_Stored_Status_Provider implements Sensei_Course_Enrolment_Provider_Interface, Sensei_Course_Enrolment_Provider_Debug_Interface {
const DATA_KEY_LEGACY_MIGRATION = 'legacy_manual';
/**
* Singleton instance.
*
* @var self
*/
private static $instance;
/**
* Provides singleton instance of manual provider.
*
* @return Sensei_Course_Manual_Enrolment_Provider
*/
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Sensei_Course_Manual_Enrolment_Provider constructor. Private so it can only be initialized internally.
*/
private function __construct() {}
/**
* Gets the unique identifier of this enrolment provider.
*
* @return int
*/
public function get_id() {
return 'manual';
}
/**
* Gets the descriptive name of the provider.
*
* @return string
*/
public function get_name() {
return esc_html__( 'Manual', 'sensei-lms' );
}
/**
* Check if this course enrolment provider manages enrolment for a particular course.
*
* @param int $course_id Course post ID.
*
* @return bool
*/
public function handles_enrolment( $course_id ) {
return true;
}
/**
* Check if this course enrolment provider is enrolling a user to a course.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool `true` if this provider enrols the learner and `false` if not.
*/
protected function get_initial_enrolment_status( $user_id, $course_id ) {
if ( $this->needs_legacy_migration( $user_id, $course_id ) ) {
return $this->get_legacy_enrolment( $user_id, $course_id );
}
return false;
}
/**
* Enrols a learner manually in a course.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool
*/
public function enrol_learner( $user_id, $course_id ) {
// Check if they are already manually enrolled.
if ( $this->is_enrolled( $user_id, $course_id ) ) {
return true;
}
$this->set_enrolment_status( $user_id, $course_id, true );
Sensei_Course_Enrolment_Manager::trigger_course_enrolment_check( $user_id, $course_id );
if ( ! $this->is_enrolled( $user_id, $course_id ) ) {
return false;
}
/**
* Fire action when a learner is provided with manual enrolment.
*
* @since 3.0.0
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*/
do_action( 'sensei_manual_enrolment_learner_enrolled', $user_id, $course_id );
return true;
}
/**
* Withdraw manual enrolment for a learner in a course.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool
*/
public function withdraw_learner( $user_id, $course_id ) {
// Check if they aren't manually enrolled.
if ( ! $this->is_enrolled( $user_id, $course_id ) ) {
return true;
}
$this->set_enrolment_status( $user_id, $course_id, false );
Sensei_Course_Enrolment_Manager::trigger_course_enrolment_check( $user_id, $course_id );
if ( $this->is_enrolled( $user_id, $course_id ) ) {
return false;
}
/**
* Fire action when a learner's manual enrolment is withdrawn.
*
* @since 3.0.0
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*/
do_action( 'sensei_manual_enrolment_learner_withdrawn', $user_id, $course_id );
return true;
}
/**
* Checks the legacy enrolment status during initial migration.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool
*/
private function get_legacy_enrolment( $user_id, $course_id ) {
$course_progress_comment_id = Sensei_Utils::get_course_progress_comment_id( $course_id, $user_id );
/**
* Allows other providers to have an opinion about whether or not a user was enrolled pre-3.0.0.
* This should only be called once per user/course just after upgrading from a pre-3.0.0 version of Sensei.
*
* Note: This will only allow manual enrolment to not be given. It won't be called for learners without course
* progress.
*
* @since 3.0.0
*
* @hook sensei_is_legacy_enrolled
*
* @param {bool} $is_legacy_enrolled If the user was actually enrolled before 3.0.0 migration.
* @param {int} $user_id User ID.
* @param {int} $course_id Course post ID.
* @param {int|false} $course_progress_comment_id Comment ID for the course progress record (if it exists).
* @return {bool} Filtered value.
*/
$is_legacy_enrolled = apply_filters( 'sensei_is_legacy_enrolled', true, $user_id, $course_id, $course_progress_comment_id );
$this->set_migrated_legacy_enrolment_status( $user_id, $course_id, $is_legacy_enrolled );
return $is_legacy_enrolled;
}
/**
* Check if a user's enrolment status needs to be migrated from pre-3.0.0 enrolment.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool
*/
private function needs_legacy_migration( $user_id, $course_id ) {
if ( ! get_option( 'sensei_enrolment_legacy' ) ) {
return false;
}
// We only migrate people who had course progress.
$course_progress_comment_id = Sensei_Utils::get_course_progress_comment_id( $course_id, $user_id );
if ( ! $course_progress_comment_id ) {
return false;
}
return ! $this->has_migrated_legacy_enrolment( $user_id, $course_id );
}
/**
* Checks if we've migrated legacy enrolment status.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return bool
*/
private function has_migrated_legacy_enrolment( $user_id, $course_id ) {
$course_enrolment = Sensei_Course_Enrolment::get_course_instance( $course_id );
$provider_state = $course_enrolment->get_provider_state( $this, $user_id );
$legacy_manual_value = $provider_state->get_stored_value( self::DATA_KEY_LEGACY_MIGRATION );
return null !== $legacy_manual_value;
}
/**
* Update legacy migration status.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
* @param bool $legacy_enrolment_status Value of legacy enrolment status.
*/
private function set_migrated_legacy_enrolment_status( $user_id, $course_id, $legacy_enrolment_status ) {
$course_enrolment = Sensei_Course_Enrolment::get_course_instance( $course_id );
$provider_state = $course_enrolment->get_provider_state( $this, $user_id );
$provider_state->set_stored_value( self::DATA_KEY_LEGACY_MIGRATION, $legacy_enrolment_status );
$provider_state->save();
}
/**
* Provide debugging information about a user's enrolment in a course.
*
* @param int $user_id User ID.
* @param int $course_id Course post ID.
*
* @return string[] Array of human readable debug messages. Allowed HTML tags: a[href]; strong; em; span[style,class]
*/
public function debug( $user_id, $course_id ) {
$messages = [];
$course_enrolment = Sensei_Course_Enrolment::get_course_instance( $course_id );
$provider_state = $course_enrolment->get_provider_state( $this, $user_id );
$legacy_migration_status = $provider_state->get_stored_value( self::DATA_KEY_LEGACY_MIGRATION );
if ( null === $legacy_migration_status ) {
$messages[] = __( 'Student manual enrollment <strong>was not migrated</strong> from a legacy version of Sensei LMS.', 'sensei-lms' );
if ( false !== get_option( 'sensei_enrolment_legacy' ) ) {
$messages[] = __( 'Student <strong>did not have</strong> course progress at the time of manual enrollment migration.', 'sensei-lms' );
}
} else {
$messages[] = __( 'Student <strong>did have</strong> course progress at the time of manual enrollment migration.', 'sensei-lms' );
if ( false === $legacy_migration_status ) {
$messages[] = __( 'Manual enrollment <strong>was not provided</strong> to the student on legacy migration.', 'sensei-lms' );
} else {
$messages[] = __( 'Manual enrollment <strong>was provided</strong> to the student on legacy migration.', 'sensei-lms' );
}
}
return $messages;
}
/**
* Gets the version of the enrolment provider logic. If this changes, enrolment will be recalculated.
*
* This version should be bumped to the next stable Sensei LMS version whenever this provider is modified.
*
* @return int|string
*/
public function get_version() {
return '3.0.0';
}
}