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494 lines
18 KiB
494 lines
18 KiB
<?php
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require_once(dirname(__FILE__).'/../inc/global.inc.php');
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$libpath = api_get_path(LIBRARY_PATH);
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require_once $libpath.'course.lib.php';
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require_once $libpath.'add_course.lib.inc.php';
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require_once $libpath.'course_description.lib.php';
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require_once(dirname(__FILE__).'/webservice.php');
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/**
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* Web services available for the Course module. This class extends the WS class
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*/
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class WSCourse extends WS {
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/**
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* Deletes a course (helper method)
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*
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* @param string Course id field name
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* @param string Course id value
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* @return mixed True if the course was successfully deleted, WSError otherwise
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*/
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protected function deleteCourseHelper($course_id_field_name, $course_id_value) {
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$course_id = $this->getCourseId($course_id_field_name, $course_id_value);
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if($course_id instanceof WSError) {
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return $course_id;
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} else {
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$course_code = CourseManager::get_course_code_from_course_id($course_id);
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CourseManager::delete_course($course_code);
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return true;
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}
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}
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/**
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* Deletes a course
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*
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* @param string API secret key
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* @param string Course id field name
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* @param string Course id value
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*/
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public function DeleteCourse($secret_key, $course_id_field_name, $course_id_value) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$result = $this->deleteCourseHelper($course_id_field_name, $course_id_value);
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if($result instanceof WSError) {
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$this->handleError($result);
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}
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}
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}
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/**
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* Deletes multiple courses
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*
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* @param string API secret key
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* @param array Array of courses with elements of the form array('course_id_field_name' => 'name_of_field', 'course_id_value' => 'value')
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* @return array Array with elements like array('course_id_value' => 'value', 'result' => array('code' => 0, 'message' => 'Operation was successful')). Note that if the result array contains a code different
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* than 0, an error occured
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*/
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public function DeleteCourses($secret_key, $courses) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$results = array();
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foreach($users as $user) {
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$result_tmp = array();
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$result_op = $this->deleteCourseHelper($course['course_id_field_name'], $course['course_id_value']);
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$result_tmp['course_id_value'] = $course['course_id_value'];
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if($result_op instanceof WSError) {
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// Return the error in the results
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$result_tmp['result'] = $result_op->toArray();
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} else {
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$result_tmp['result'] = $this->getSuccessfulResult();
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}
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$results[] = $result_tmp;
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}
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return $results;
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}
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}
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/**
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* Creates a course (helper method)
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*
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* @param string Title
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* @param string Category code
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* @param string Wanted code. If it's not defined, it will be generated automatically
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* @param string Tutor name
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* @param string Course admin user id field name
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* @param string Course admin user id value
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* @param string Course language
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* @param string Course id field name
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* @param string Course id value
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* @param array Course extra fields
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* @return mixed Generated id if creation was successful, WSError otherwise
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*/
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protected function createCourseHelper($title, $category_code, $wanted_code, $tutor_name, $course_admin_user_id_field_name, $course_admin_user_id_value, $language, $course_id_field_name, $course_id_value, $extras) {
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// Add the original course id field name and value to the extra fields if needed
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$extras_associative = array();
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if($course_id_field_name != "chamilo_course_id") {
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$extras_associative[$course_id_field_name] = $course_id_value;
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}
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foreach($extras as $extra) {
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$extras_associative[$extra['field_name']] = $extra['field_value'];
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}
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$course_admin_id = $this->getUserId($course_admin_user_id_field_name, $course_admin_user_id_value);
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if($course_admin_id instanceof WSError) {
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return $course_admin_id;
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}
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if($wanted_code == '') {
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$wanted_code = generate_course_code($title);
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}
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$result = create_course($wanted_code, $title, $tutor_name, $category_code, $language, $course_admin_id, $this->_configuration['db_prefix'], 0);
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if (!$result) {
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return new WSError(202, 'There was an error creating the course');
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} else {
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// Update extra fields
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foreach($extras_associative as $fname => $fvalue) {
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CourseManager::update_course_extra_field_value($result, $fname, $fvalue);
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}
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// Get course id
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$course_info = CourseManager::get_course_information($result);
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return $course_info['id'];
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}
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}
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/**
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* Creates a course
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*
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* @param string API secret key
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* @param string Title
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* @param string Category code
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* @param string Wanted code. If it's not defined, it will be generated automatically
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* @param string Tutor name
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* @param string Course admin user id field name
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* @param string Course admin user id value
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* @param string Course language
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* @param string Course id field name
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* @param string Course id value
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* @param array Course extra fields
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* @return int Course id generated
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*/
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public function CreateCourse($secret_key, $title, $category_code, $wanted_code, $tutor_name, $course_admin_user_id_field_name, $course_admin_user_id_value, $language, $course_id_field_name, $course_id_value, $extras) {
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// First, verify the secret key
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$result = $this->createCourseHelper($title, $category_code, $wanted_code, $tutor_name, $course_admin_user_id_field_name, $course_admin_user_id_value, $language, $course_id_field_name, $course_id_value, $extras);
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if($result instanceof WSError) {
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$this->handleError($result);
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} else {
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return $result;
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}
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}
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}
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/**
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* Create multiple courses
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*
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* @param string API secret key
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* @param array Courses to be created, with elements following the structure presented in CreateCourse
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* @return array Array with elements of the form array('course_id_value' => 'original value sent', 'course_id_generated' => 'value_generated', 'result' => array('code' => 0, 'message' => 'Operation was successful'))
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*/
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public function CreateCourses($secret_key, $courses) {
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// First, verify the secret key
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$results = array();
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foreach($courses as $course) {
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$result_tmp = array();
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extract($course);
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$result = $this->createCourseHelper($title, $category_code, $wanted_code, $tutor_name, $course_admin_user_id_field_name, $course_admin_user_id_value, $language, $course_id_field_name, $course_id_value, $extras);
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if($result instanceof WSError) {
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$result_tmp['result'] = $result->toArray();
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$result_tmp['course_id_value'] = $course_id_value;
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$result_tmp['course_id_generated'] = 0;
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} else {
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$result_tmp['result'] = $this->getSuccessfulResult();
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$result_tmp['course_id_value'] = $course_id_value;
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$result_tmp['course_id_generated'] = $result;
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}
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$results[] = $result_tmp;
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}
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return $results;
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}
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}
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/**
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* Edits a course (helper method)
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*
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* @param string Course id field name
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* @param string Course id value
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* @param string Title
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* @param string Category code
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* @param string Department name
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* @param string Department url
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* @param string Course language
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* @param int Visibility
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* @param int Subscribe (0 = denied, 1 = allowed)
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* @param int Unsubscribe (0 = denied, 1 = allowed)
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* @param string Visual code
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* @param array Course extra fields
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* @return mixed True in case of success, WSError otherwise
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*/
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protected function editCourseHelper($course_id_field_name, $course_id_value, $title, $category_code, $department_name, $department_url, $language, $visibility, $subscribe, $unsubscribe, $visual_code, $extras) {
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$course_id = $this->getCourseId($course_id_field_name, $course_id_value);
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if($course_id instanceof WSError) {
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return $course_id;
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} else {
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$attributes = array();
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if(!is_empty($title)) {
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$attributes['title'] = $title;
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}
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if(!is_empty($category_code)) {
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$attributes['category_code'] = $category_code;
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}
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if(!is_empty($department_name)) {
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$attributes['department_name'] = $department_name;
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}
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if(!is_empty($department_url)) {
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$attributes['department_url'] = $department_url;
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}
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if(!is_empty($language)) {
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$attributes['course_language'] = $language;
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}
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if($visibility != '') {
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$attributes['visibility'] = (int)$visibility;
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}
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if($subscribe != '') {
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$attributes['subscribe'] = (int)$subscribe;
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}
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if($unsubscribe != '') {
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$attributes['unsubscribe'] = (int)$unsubscribe;
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}
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if(!is_empty($visual_code)) {
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$attributes['visual_code'] = $visual_code;
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}
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if(!is_empty($attributes)) {
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CourseManager::update_attributes($course_id, $attributes);
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}
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if(!empty($extras)) {
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$course_code = CourseManager::get_course_code_from_course_id($course_id);
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$extras_associative = array();
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foreach($extras as $extra) {
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$extras_associative[$extra['field_name']] = $extra['field_value'];
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}
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foreach($extras_associative as $fname => $fvalue) {
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CourseManager::update_extra_field_value($course_code, $fname, $fvalue);
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}
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}
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return true;
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}
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}
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/**
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* Edits a course
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*
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* @param string API secret key
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* @param string Course id field name
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* @param string Course id value
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* @param string Title
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* @param string Category code
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* @param string Department name
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* @param string Department url
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* @param string Course language
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* @param int Visibility
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* @param int Subscribe (0 = denied, 1 = allowed)
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* @param int Unsubscribe (0 = denied, 1 = allowed)
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* @param string Visual code
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* @param array Course extra fields
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*/
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public function EditCourse($secret_key, $course_id_field_name, $course_id_value, $title, $category_code, $department_name, $department_url, $language, $visibility, $subscribe, $unsubscribe, $visual_code, $extras) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$result = $this->editCourseHelper($course_id_field_name, $course_id_value, $title, $category_code, $department_name, $department_url, $language, $visibility, $subscribe, $unsubscribe, $visual_code, $extras);
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if($result instanceof WSError) {
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$this->handleError($result);
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}
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}
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}
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/**
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* List courses
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*
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* @param string API secret key
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* @param string Course id field name. Use "chamilo_course_id" to use internal id
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* @return array An array with elements of the form ('id' => 'Course internal id', 'code' => 'Course code', 'title' => 'Course title', 'language' => 'Course language', 'visibility' => 'Course visibility',
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* 'category_name' => 'Name of the category of the course', 'number_students' => 'Number of students in the course', 'external_course_id' => 'External course id')
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*/
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public function ListCourses($secret_key, $course_id_field_name) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$courses_result = array();
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$category_names = array();
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$courses = CourseManager::get_courses_list();
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foreach($courses as $course) {
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$course_tmp = array();
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$course_tmp['id'] = $course['id'];
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$course_tmp['code'] = $course['code'];
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$course_tmp['title'] = $course['title'];
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$course_tmp['language'] = $course['course_language'];
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$course_tmp['visibility'] = $course['visibility'];
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// Determining category name
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if($category_names[$course['category_code']]) {
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$course_tmp['category_name'] = $category_names[$course['category_code']];
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} else {
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$category = CourseManager::get_course_category($course['category_code']);
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$category_names[$course['category_code']] = $category['name'];
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$course_tmp['category_name'] = $category['name'];
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}
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// Determining number of students registered in course
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$user_list = CourseManager::get_user_list_from_course_code($course['code'], false);
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$course_tmp['number_students'] = count($user_list);
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// Determining external course id
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$course_tmp['external_course_id'] = CourseManager::get_course_extra_field_value($course_field_name, $course['code']);
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$courses_result[] = $course_tmp;
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}
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return $courses_result;
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}
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}
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/**
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* Subscribe or unsubscribe user to a course (helper method)
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*
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* @param string Course id field name. Use "chamilo_course_id" to use internal id
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* @param string Course id value.
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* @param string User id field name. Use "chamilo_user_id" to use internal id
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* @param string User id value
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* @param int Set to 1 to subscribe, 0 to unsubscribe
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* @param int Status (STUDENT or TEACHER) Used for subscription only
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* @return mixed True if subscription or unsubscription was successful, false otherwise
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*/
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protected function changeUserSubscription($course_id_field_name, $course_id_value, $user_id_field_name, $user_id_value, $state, $status = STUDENT) {
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$course_id = $this->getCourseId($course_id_field_name, $course_id_value);
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if($course_id instanceof WSError) {
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return $course_id;
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} else {
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$user_id = $this->getUserId($user_id_field_name, $user_id_value);
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if($user_id instanceof WSError) {
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return $user_id;
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} else {
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$course_code = CourseManager::get_course_code_from_course_id($course_id);
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if($state == 0) {
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// Unsubscribe user
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CourseManager::unsubscribe_user($user_id, $course_code);
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return true;
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} else {
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// Subscribe user
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if(CourseManager::subscribe_user($user_id, $course_code, $status)) {
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return true;
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} else {
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return new WSError(203, 'An error occured subscribing to this course');
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}
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}
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}
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}
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}
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/**
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* Subscribe user to a course
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*
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* @param string API secret key
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* @param string Course id field name. Use "chamilo_course_id" to use internal id
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* @param string Course id value.
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* @param string User id field name. Use "chamilo_user_id" to use internal id
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* @param string User id value
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* @param int Status (1 = Teacher, 5 = Student)
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*/
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public function SubscribeUserToCourse($secret_key, $course_id_field_name, $course_id_value, $user_id_field_name, $user_id_value, $status) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$result = $this->changeUserSubscription($course_id_field_name, $course_id_value, $user_id_field_name, $user_id_value, 1, $status);
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if($result instanceof WSError) {
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$this->handleError($result);
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}
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}
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}
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/**
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* Unsusbscribe user from course
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*
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* @param string API secret key
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* @param string Course id field name. Use "chamilo_course_id" to use internal id
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* @param string Course id value.
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* @param string User id field name. Use "chamilo_user_id" to use internal id
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* @param string User id value
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*/
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public function UnsubscribeUserFromCourse($secret_key, $course_id_field_name, $course_id_value, $user_id_field_name, $user_id_value) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$result = $this->changeUserSubscription($course_id_field_name, $course_id_value, $user_id_field_name, $user_id_value, 0);
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if($result instanceof WSError) {
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$this->handleError($result);
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}
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}
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}
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/**
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* Returns the descriptions of a course, along with their id
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*
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* @param string API secret key
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* @param string Course id field name
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* @param string Course id value
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* @return array Returns an array with elements of the form ('course_desc_id' => 1, 'course_desc_title' => 'Title', 'course_desc_content' => 'Content')
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*/
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public function GetCourseDescriptions($secret_key, $course_id_field_name, $course_id_value) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$course_id = $this->getCourseId($course_id_field_name, $course_id_value);
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if($course_id instanceof WSError) {
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return $course_id;
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} else {
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// Course exists, get its descriptions
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$descriptions = CourseDescription::get_descriptions($course_id);
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$results = array();
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foreach($descriptions as $description) {
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$results[] = array('course_desc_id' => $description->get_description_type(),
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'course_desc_title' => $description->get_title(),
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'course_desc_content' => $description->get_content());
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}
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return $results;
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}
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}
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}
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/**
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* Edit course description
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*
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* @param string API secret key
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* @param string Course id field name
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* @param string Course id value
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* @param int Category id from course description
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* @param string Description title
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* @param string Course description content
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*/
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public function EditCourseDescription($secret_key, $course_id_field_name, $course_id_value, $course_desc_id, $course_desc_title, $course_desc_content) {
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$verifKey = $this->verifyKey($secret_key);
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if($verifKey instanceof WSError) {
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$this->handleError($verifKey);
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} else {
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$course_id = $this->getCourseId($course_id_field_name, $course_id_value);
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if($course_id instanceof WSError) {
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return $course_id;
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} else {
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// Create the new course description
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$cd = new CourseDescription();
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$cd->set_description_type($course_desc_id);
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$cd->set_title($course_desc_title);
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$cd->set_content($course_desc_content);
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$cd->set_session_id(0);
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// Get course info
|
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$course_info = CourseManager::get_course_information(CourseManager::get_course_code_from_course_id($course_id));
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// Check if this course description exists
|
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$descriptions = CourseDescription::get_descriptions($course_id);
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$exists = false;
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foreach($descriptions as $description) {
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if($description->get_description_type() == $course_desc_id) {
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$exists = true;
|
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}
|
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}
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if (!$exists) {
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$cd->set_progress(0);
|
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$cd->insert($course_info['db_name']);
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} else {
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$cd->update($course_info['db_name']);
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}
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}
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}
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}
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}
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