aj
/
chamilo-lms2


			
							12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442
							<?php
/* For licensing terms, see /license.txt */

/**
 * Class AddCourse
 */
class AddCourse
{
    /**
     * Defines the four needed keys to create a course based on several parameters.
     * @param string    The code you want for this course
     * @param string    Prefix added for ALL keys
     * @param string    Prefix added for databases only
     * @param string    Prefix added for paths only
     * @param bool      Add unique prefix
     * @param bool      Use code-independent keys
     * @return array    An array with the needed keys ['currentCourseCode'], ['currentCourseId'], ['currentCourseDbName'], ['currentCourseRepository']
     * @todo Eliminate the global variables.
     * @assert (null) === false
     */
    public static function define_course_keys(
        $wanted_code,
        $prefix_for_all = '',
        $prefix_for_base_name = '',
        $prefix_for_path = '',
        $add_unique_prefix = false,
        $use_code_indepedent_keys = true
    ) {
        $course_table = Database::get_main_table(TABLE_MAIN_COURSE);
        $wanted_code = CourseManager::generate_course_code($wanted_code);
        $keys_course_code = $wanted_code;
        if (!$use_code_indepedent_keys) {
            $wanted_code = '';
        }

        if ($add_unique_prefix) {
            $unique_prefix = substr(md5(uniqid(rand())), 0, 10);
        } else {
            $unique_prefix = '';
        }

        $keys = array();
        $final_suffix = array('CourseId' => '', 'CourseDb' => '', 'CourseDir' => '');
        $limit_numb_try = 100;
        $keys_are_unique = false;
        $try_new_fsc_id = $try_new_fsc_db = $try_new_fsc_dir = 0;

        while (!$keys_are_unique) {
            $keys_course_id = $prefix_for_all.$unique_prefix.$wanted_code.$final_suffix['CourseId'];
            $keys_course_repository = $prefix_for_path.$unique_prefix.$wanted_code.$final_suffix['CourseDir'];
            $keys_are_unique = true;

            // Check whether they are unique.
            $query = "SELECT 1 FROM $course_table 
                      WHERE code='".$keys_course_id."' 
                      LIMIT 0, 1";
            $result = Database::query($query);

            if (Database::num_rows($result)) {
                $keys_are_unique = false;
                $try_new_fsc_id++;
                $final_suffix['CourseId'] = substr(md5(uniqid(rand())), 0, 4);
            }
            if (file_exists(api_get_path(SYS_COURSE_PATH).$keys_course_repository)) {
                $keys_are_unique = false;
                $try_new_fsc_dir++;
                $final_suffix['CourseDir'] = substr(md5(uniqid(rand())), 0, 4);
            }

            if (($try_new_fsc_id + $try_new_fsc_db + $try_new_fsc_dir) > $limit_numb_try) {
                return $keys;
            }
        }

        $keys['currentCourseCode'] = $keys_course_code;
        $keys['currentCourseId'] = $keys_course_id;
        $keys['currentCourseRepository'] = $keys_course_repository;

        return $keys;
    }

    /**
     * Initializes a file repository for a newly created course.
     * @param string Course repository
     * @param string Course code
     * @return int 0
     * @assert (null,null) === false
     */
    public static function prepare_course_repository($course_repository, $course_code)
    {
        $perm = api_get_permissions_for_new_directories();
        $perm_file = api_get_permissions_for_new_files();
        $htmlpage = "<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"utf-8\">\n    <title>Not authorized</title>\n  </head>\n  <body>\n  </body>\n</html>";
        $cp = api_get_path(SYS_COURSE_PATH).$course_repository;

        //Creating document folder
        mkdir($cp, $perm);
        mkdir($cp.'/document', $perm);
        $cpt = $cp.'/document/index.html';
        $fd = fopen($cpt, 'w');
        fwrite($fd, $htmlpage);
        fclose($fd);

        /*
        @chmod($cpt, $perm_file);
        @copy($cpt, $cp . '/document/index.html');
        mkdir($cp . '/document/images', $perm);
        @copy($cpt, $cp . '/document/images/index.html');
        mkdir($cp . '/document/images/gallery/', $perm);
        @copy($cpt, $cp . '/document/images/gallery/index.html');
        mkdir($cp . '/document/shared_folder/', $perm);
        @copy($cpt, $cp . '/document/shared_folder/index.html');
        mkdir($cp . '/document/audio', $perm);
        @copy($cpt, $cp . '/document/audio/index.html');
        mkdir($cp . '/document/flash', $perm);
        @copy($cpt, $cp . '/document/flash/index.html');
        mkdir($cp . '/document/video', $perm);
        @copy($cpt, $cp . '/document/video/index.html');    */

        //Creatind dropbox folder
        mkdir($cp.'/dropbox', $perm);
        $cpt = $cp.'/dropbox/index.html';
        $fd = fopen($cpt, 'w');
        fwrite($fd, $htmlpage);
        fclose($fd);
        @chmod($cpt, $perm_file);
        mkdir($cp.'/group', $perm);
        @copy($cpt, $cp.'/group/index.html');
        mkdir($cp.'/page', $perm);
        @copy($cpt, $cp.'/page/index.html');
        mkdir($cp.'/scorm', $perm);
        @copy($cpt, $cp.'/scorm/index.html');
        mkdir($cp.'/upload', $perm);
        @copy($cpt, $cp.'/upload/index.html');
        mkdir($cp.'/upload/forum', $perm);
        @copy($cpt, $cp.'/upload/forum/index.html');
        mkdir($cp.'/upload/forum/images', $perm);
        @copy($cpt, $cp.'/upload/forum/images/index.html');
        mkdir($cp.'/upload/test', $perm);
        @copy($cpt, $cp.'/upload/test/index.html');
        mkdir($cp.'/upload/blog', $perm);
        @copy($cpt, $cp.'/upload/blog/index.html');
        mkdir($cp.'/upload/learning_path', $perm);
        @copy($cpt, $cp.'/upload/learning_path/index.html');
        mkdir($cp.'/upload/learning_path/images', $perm);
        @copy($cpt, $cp.'/upload/learning_path/images/index.html');
        mkdir($cp.'/upload/calendar', $perm);
        @copy($cpt, $cp.'/upload/calendar/index.html');
        mkdir($cp.'/upload/calendar/images', $perm);
        @copy($cpt, $cp.'/upload/calendar/images/index.html');
        mkdir($cp.'/work', $perm);
        @copy($cpt, $cp.'/work/index.html');
        mkdir($cp.'/upload/announcements', $perm);
        @copy($cpt, $cp.'/upload/announcements/index.html');
        mkdir($cp.'/upload/announcements/images', $perm);
        @copy($cpt, $cp.'/upload/announcements/images/index.html');

        //Oral expression question type
        mkdir($cp.'/exercises', $perm);
        @copy($cpt, $cp.'/exercises/index.html');

        // Create .htaccess in the dropbox directory.
        $fp = fopen($cp.'/dropbox/.htaccess', 'w');
        fwrite(
            $fp,
            "AuthName AllowLocalAccess
                       AuthType Basic

                       order deny,allow
                       deny from all

                       php_flag zlib.output_compression off"
        );
        fclose($fp);

        // Build index.php of the course.
        /*$fd = fopen($cp . '/index.php', 'w');

        // str_replace() removes \r that cause squares to appear at the end of each line
        //@todo fix the harcoded include
        $string = str_replace(
            "\r",
            "",
            "<?" . "php
        \$cidReq = \"$course_code\";
        \$dbname = \"$course_code\";

        include(\"" . api_get_path(SYS_CODE_PATH) . "course_home/course_home.php\");
        ?>"
        );
        fwrite($fd, $string);
        @chmod($cp . '/index.php', $perm_file);*/
        return 0;
    }

    /**
     * Gets an array with all the course tables (deprecated?)
     * @return string[]
     * @assert (null) !== null
     */
    public static function get_course_tables()
    {
        $tables = array();
        $tables[] = 'item_property';
        $tables[] = 'tool';
        $tables[] = 'tool_intro';
        $tables[] = 'group_info';
        $tables[] = 'group_category';
        $tables[] = 'group_rel_user';
        $tables[] = 'group_rel_tutor';
        $tables[] = 'userinfo_content';
        $tables[] = 'userinfo_def';
        $tables[] = 'course_description';
        $tables[] = 'calendar_event';
        $tables[] = 'calendar_event_repeat';
        $tables[] = 'calendar_event_repeat_not';
        $tables[] = 'calendar_event_attachment';
        $tables[] = 'announcement';
        $tables[] = 'announcement_attachment';
        $tables[] = 'resource';
        $tables[] = 'student_publication';
        $tables[] = 'student_publication_assignment';
        $tables[] = 'document';
        $tables[] = 'forum_category';
        $tables[] = 'forum_forum';
        $tables[] = 'forum_thread';
        $tables[] = 'forum_post';
        $tables[] = 'forum_mailcue';
        $tables[] = 'forum_attachment';
        $tables[] = 'forum_notification';
        $tables[] = 'forum_thread_qualify';
        $tables[] = 'forum_thread_qualify_log';
        $tables[] = 'link';
        $tables[] = 'link_category';
        $tables[] = 'online_connected';
        $tables[] = 'online_link';
        $tables[] = 'chat_connected';
        $tables[] = 'quiz';
        $tables[] = 'quiz_rel_question';
        $tables[] = 'quiz_question';
        $tables[] = 'quiz_answer';
        $tables[] = 'quiz_question_option';
        $tables[] = 'quiz_question_category';
        $tables[] = 'quiz_question_rel_category';
        $tables[] = 'dropbox_post';
        $tables[] = 'dropbox_file';
        $tables[] = 'dropbox_person';
        $tables[] = 'dropbox_category';
        $tables[] = 'dropbox_feedback';
        $tables[] = 'lp';
        $tables[] = 'lp_item';
        $tables[] = 'lp_view';
        $tables[] = 'lp_item_view';
        $tables[] = 'lp_iv_interaction';
        $tables[] = 'lp_iv_objective';
        $tables[] = 'blog';
        $tables[] = 'blog_comment';
        $tables[] = 'blog_post';
        $tables[] = 'blog_rating';
        $tables[] = 'blog_rel_user';
        $tables[] = 'blog_task';
        $tables[] = 'blog_task_rel_user';
        $tables[] = 'blog_attachment';
        $tables[] = 'permission_group';
        $tables[] = 'permission_user';
        $tables[] = 'permission_task';
        $tables[] = 'role';
        $tables[] = 'role_group';
        $tables[] = 'role_permissions';
        $tables[] = 'role_user';
        $tables[] = 'survey';
        $tables[] = 'survey_question';
        $tables[] = 'survey_question_option';
        $tables[] = 'survey_invitation';
        $tables[] = 'survey_answer';
        $tables[] = 'survey_group';
        $tables[] = 'wiki';
        $tables[] = 'wiki_conf';
        $tables[] = 'wiki_discuss';
        $tables[] = 'wiki_mailcue';
        $tables[] = 'course_setting';
        $tables[] = 'glossary';
        $tables[] = 'notebook';
        $tables[] = 'attendance';
        $tables[] = 'attendance_sheet';
        $tables[] = 'attendance_calendar';
        $tables[] = 'attendance_result';
        $tables[] = 'attendance_sheet_log';
        $tables[] = 'thematic';
        $tables[] = 'thematic_plan';
        $tables[] = 'thematic_advance';

        return $tables;
    }

    /**
     * Executed only before create_course_tables()
     * @return void
     * @assert (null) === null
     */
    public static function drop_course_tables()
    {
        $list = self::get_course_tables();
        foreach ($list as $table) {
            $sql = "DROP TABLE IF EXISTS ".DB_COURSE_PREFIX.$table;
            Database::query($sql);
        }
    }


    /**
     * Returns a list of all files in the given course directory. The requested
     * directory will be checked against a "checker" directory to avoid access to
     * protected/unauthorized files
     * @param string Complete path to directory we want to list
     * @param array A list of files to which we want to add the files found
     * @param string Type of base directory from which we want to recover the files
     * @param string $path
     * @param string $media
     * @return array
     * @assert (null,null,null) === false
     * @assert ('abc',array(),'') === array()
     */
    public static function browse_folders($path, $files, $media)
    {
        if ($media == 'images') {
            $code_path = api_get_path(
                    SYS_CODE_PATH
                ).'default_course_document/images/';
        }
        if ($media == 'audio') {
            $code_path = api_get_path(
                    SYS_CODE_PATH
                ).'default_course_document/audio/';
        }
        if ($media == 'flash') {
            $code_path = api_get_path(
                    SYS_CODE_PATH
                ).'default_course_document/flash/';
        }
        if ($media == 'video') {
            $code_path = api_get_path(
                    SYS_CODE_PATH
                ).'default_course_document/video/';
        }
        if ($media == 'certificates') {
            $code_path = api_get_path(
                    SYS_CODE_PATH
                ).'default_course_document/certificates/';
        }
        if (is_dir($path)) {
            $handle = opendir($path);
            while (false !== ($file = readdir($handle))) {
                if (is_dir($path.$file) && strpos($file, '.') !== 0) {
                    $files[]['dir'] = str_replace(
                        $code_path,
                        '',
                        $path.$file.'/'
                    );
                    $files = self::browse_folders(
                        $path.$file.'/',
                        $files,
                        $media
                    );
                } elseif (is_file($path.$file) && strpos($file, '.') !== 0) {
                    $files[]['file'] = str_replace(
                        $code_path,
                        '',
                        $path.$file
                    );
                }
            }
        }
        return $files;
    }

    /**
     * Sorts pictures by type (used?)
     * @param array List of files (sthg like array(0=>array('png'=>1)))
     * @param string File type
     * @param string $type
     * @return array The received array without files not matching type
     * @assert (array(),null) === array()
     */
    public static function sort_pictures($files, $type)
    {
        $pictures = array();
        foreach ($files as $key => $value) {
            if (isset($value[$type]) && $value[$type] != '') {
                $pictures[][$type] = $value[$type];
            }
        }
        return $pictures;
    }

    /**
     * Fills the course database with some required content and example content.
     * @param int Course (int) ID
     * @param string Course directory name (e.g. 'ABC')
     * @param string Language used for content (e.g. 'spanish')
     * @param bool Whether to fill the course with example content
     * @param int $authorId
     * @return bool False on error, true otherwise
     * @version 1.2
     * @assert (null, '', '', null) === false
     * @assert (1, 'ABC', null, null) === false
     * @assert (1, 'TEST', 'spanish', true) === true
     */
    public static function fill_db_course(
        $course_id,
        $course_repository,
        $language,
        $fill_with_exemplary_content = null,
        $authorId = 0
    ) {
        if (is_null($fill_with_exemplary_content)) {
            $fill_with_exemplary_content = api_get_setting('example_material_course_creation') != 'false';
        }
        $course_id = intval($course_id);

        if (empty($course_id)) {
            return false;
        }

        $courseInfo = api_get_course_info_by_id($course_id);
        $authorId = empty($authorId) ? api_get_user_id() : (int) $authorId;

        $tbl_course_homepage = Database::get_course_table(TABLE_TOOL_LIST);
        $TABLEGROUPCATEGORIES = Database::get_course_table(TABLE_GROUP_CATEGORY);
        $TABLEITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
        $TABLETOOLDOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
        $TABLESETTING = Database::get_course_table(TABLE_COURSE_SETTING);
        $TABLEGRADEBOOK = Database::get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
        $TABLEGRADEBOOKLINK = Database::get_main_table(TABLE_MAIN_GRADEBOOK_LINK);

        $visible_for_all = 1;
        $visible_for_course_admin = 0;
        $visible_for_platform_admin = 2;

        /*    Course tools  */

        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 1, '".TOOL_COURSE_DESCRIPTION."','course_description/','info.gif','".self::string2binary(
                api_get_setting(
                    'course_create_active_tools',
                    'course_description'
                )
            )."','0','squaregrey.gif', 0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 2, '".TOOL_CALENDAR_EVENT."','calendar/agenda.php','agenda.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'agenda')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage  (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 3, '".TOOL_DOCUMENT."','document/document.php','folder_document.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'documents')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 4, '".TOOL_LEARNPATH."','lp/lp_controller.php','scorms.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'learning_path')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
             VALUES ($course_id, 5, '".TOOL_LINK."','link/link.php','links.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'links')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage  (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES  ($course_id, 6, '".TOOL_QUIZ."','exercise/exercise.php','quiz.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'quiz')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 7, '".TOOL_ANNOUNCEMENT."','announcements/announcements.php','valves.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'announcements')
            )."','0','squaregrey.gif', 0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 8, '".TOOL_FORUM."','forum/index.php','forum.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'forums')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 9, '".TOOL_DROPBOX."','dropbox/index.php','dropbox.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'dropbox')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 10, '".TOOL_USER."','user/user.php','members.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'users')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 11, '".TOOL_GROUP."','group/group.php','group.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'groups')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 12, '".TOOL_CHAT."','chat/chat.php','chat.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'chat')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 13, '".TOOL_STUDENTPUBLICATION."','work/work.php','works.gif','".self::string2binary(
                api_get_setting(
                    'course_create_active_tools',
                    'student_publications'
                )
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 14, '".TOOL_SURVEY."','survey/survey_list.php','survey.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'survey')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 15, '".TOOL_WIKI."','wiki/index.php','wiki.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'wiki')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 16, '".TOOL_GRADEBOOK."','gradebook/index.php','gradebook.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'gradebook')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 17, '".TOOL_GLOSSARY."','glossary/index.php','glossary.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'glossary')
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 18, '".TOOL_NOTEBOOK."','notebook/index.php','notebook.gif','".self::string2binary(
                api_get_setting('course_create_active_tools', 'notebook')
            )."','0','squaregrey.gif',0,'_self','interaction','0')"
        );

        $setting = intval(self::string2binary(
            api_get_setting('course_create_active_tools', 'attendances')
        ));

        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 19, '".TOOL_ATTENDANCE."','attendance/index.php','attendance.gif','".$setting."','0','squaregrey.gif',0,'_self','authoring','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 20, '".TOOL_COURSE_PROGRESS."','course_progress/index.php','course_progress.gif','".self::string2binary(
                intval(api_get_setting('course_create_active_tools', 'course_progress'))
            )."','0','squaregrey.gif',0,'_self','authoring','0')"
        );

        if (api_get_setting('search_enabled') === 'true') {
            Database::query(
                "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
                VALUES ($course_id, 23, '".TOOL_SEARCH."','search/','info.gif','".self::string2binary(
                    api_get_setting(
                        'course_create_active_tools',
                        'enable_search'
                    )
                )."','0','search.gif',0,'_self','authoring','0')"
            );
        }

        $sql = "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
                VALUES ($course_id, 24,'".TOOL_BLOGS."','blog/blog_admin.php','blog_admin.gif','".intval(self::string2binary(
                api_get_setting('course_create_active_tools', 'blogs'))
            )."','1','squaregrey.gif',0,'_self','admin','0')";
        Database::query($sql);

        /*  Course homepage tools for course admin only  */
        Database::query(
            "INSERT INTO $tbl_course_homepage  (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 25, '".TOOL_TRACKING."','tracking/courseLog.php','statistics.gif','$visible_for_course_admin','1','', 0,'_self','admin','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 26, '".TOOL_COURSE_SETTING."','course_info/infocours.php','reference.gif','$visible_for_course_admin','1','', 0,'_self','admin','0')"
        );
        Database::query(
            "INSERT INTO $tbl_course_homepage (c_id, id, name, link, image, visibility, admin, address, added_tool, target, category, session_id)
            VALUES ($course_id, 27, '".TOOL_COURSE_MAINTENANCE."','course_info/maintenance.php','backup.gif','$visible_for_course_admin','1','',0,'_self', 'admin','0')"
        );

        $alert = api_get_setting('email_alert_manager_on_new_quiz');
        if ($alert === 'true') {
            $defaultEmailExerciseAlert = 1;
        } else {
            $defaultEmailExerciseAlert = 0;
        }

        /* course_setting table (courseinfo tool)   */
        $settings = [
            'email_alert_manager_on_new_doc' => ['title' => '', 'default' => 0, 'category' => 'work'],
            'email_alert_on_new_doc_dropbox' => ['default' => 0, 'category' => 'dropbox'],
            'allow_user_edit_agenda' => ['default' => 0, 'category' => 'agenda'],
            'allow_user_edit_announcement' => ['default' => 0, 'category' => 'announcement'],
            'email_alert_manager_on_new_quiz' => ['default' => $defaultEmailExerciseAlert, 'category' => 'quiz'],
            'allow_user_image_forum' => ['default' => 1, 'category' => 'forum'],
            'course_theme' => ['default' => '', 'category' => 'theme'],
            'allow_learning_path_theme' => ['default' => 1, 'category' => 'theme'],
            'allow_open_chat_window' => ['default' => 1, 'category' => 'chat'],
            'email_alert_to_teacher_on_new_user_in_course' => ['default' => 0, 'category' =>'registration'],
            'allow_user_view_user_list' => ['default' =>1, 'category' =>'user'],
            'display_info_advance_inside_homecourse' => ['default' => 1, 'category' =>'thematic_advance'],
            'email_alert_students_on_new_homework' => ['default' => 0, 'category' =>'work'],
            'enable_lp_auto_launch' => ['default' => 0, 'category' =>'learning_path'],
            'pdf_export_watermark_text' => ['default' =>'', 'category' =>'learning_path'],
            'allow_public_certificates' => [
                'default' => api_get_setting('allow_public_certificates') === 'true' ? 1 : '',
                'category' =>'certificates'
            ],
            'documents_default_visibility' => ['default' =>'visible', 'category' =>'document'],
            'show_course_in_user_language' => ['default' => 2, 'category' => null],
        ];

        $counter = 1;
        foreach ($settings as $variable => $setting) {
            $title = isset($setting['title']) ? $setting['title'] : '';
            Database::query(
                "INSERT INTO $TABLESETTING (id, c_id, title, variable, value, category)
                 VALUES ($counter, $course_id, '".$title."', '".$variable."', '".$setting['default']."', '".$setting['category']."')"
            );
            $counter++;
        }

        /* Course homepage tools for platform admin only */

        /* Group tool */
        Database::insert(
            $TABLEGROUPCATEGORIES,
            [
                'c_id' => $course_id,
                'id' => 2,
                'title' => get_lang('DefaultGroupCategory'),
                'description' => '',
                'max_student' => 8,
                'self_reg_allowed' => 0,
                'self_unreg_allowed' => 0,
                'groups_per_user' => 0,
                'display_order' => 0,
                'doc_state' => 1,
                'calendar_state' => 1,
                'work_state' => 1,
                'announcements_state' => 1,
                'forum_state' => 1,
                'wiki_state' => 1,
                'chat_state' => 1
            ]
        );

        $now = api_get_utc_datetime();

        $files = [
            ['path' => '/shared_folder', 'title' => get_lang('UserFolders'), 'filetype' => 'folder', 'size' => 0],
            ['path' => '/chat_files', 'title' => get_lang('ChatFiles'), 'filetype' => 'folder', 'size' => 0],
        ];

        $counter = 1;
        foreach ($files as $file) {
            self::insertDocument($course_id, $counter, $file, $authorId);
            $counter++;
        }

        $sys_course_path = api_get_path(SYS_COURSE_PATH);
        $perm = api_get_permissions_for_new_directories();
        $perm_file = api_get_permissions_for_new_files();

        $chat_path = $sys_course_path.$course_repository.'/document/chat_files';

        if (!is_dir($chat_path)) {
            @mkdir($chat_path, api_get_permissions_for_new_directories());
        }

        /*    Documents   */
        if ($fill_with_exemplary_content) {

            $files = [
                ['path' => '/images', 'title' => get_lang('Images'), 'filetype' => 'folder', 'size' => 0],
                ['path' => '/images/gallery', 'title' => get_lang('DefaultCourseImages'), 'filetype' => 'folder', 'size' => 0],
                ['path' => '/audio', 'title' => get_lang('Audio'), 'filetype' => 'folder', 'size' => 0],
                ['path' => '/flash', 'title' => get_lang('Flash'), 'filetype' => 'folder', 'size' => 0],
                ['path' => '/video', 'title' => get_lang('Video'), 'filetype' => 'folder', 'size' => 0],
                ['path' => '/certificates', 'title' => get_lang('Certificates'), 'filetype' => 'folder', 'size' => 0]
            ];

            foreach ($files as $file) {
                self::insertDocument($course_id, $counter, $file, $authorId);
                $counter++;
            }

            // FILL THE COURSE DOCUMENT WITH DEFAULT COURSE PICTURES
            $folders_to_copy_from_default_course = array(
                'images',
                'audio',
                'flash',
                'video',
                'certificates',
            );

            $default_course_path = api_get_path(SYS_CODE_PATH).'default_course_document/';

            $default_document_array = array();
            foreach ($folders_to_copy_from_default_course as $folder) {
                $default_course_folder_path = $default_course_path.$folder.'/';
                $files = self::browse_folders(
                    $default_course_folder_path,
                    array(),
                    $folder
                );

                $sorted_array = self::sort_pictures($files, 'dir');
                $sorted_array = array_merge(
                    $sorted_array,
                    self::sort_pictures($files, 'file')
                );
                $default_document_array[$folder] = $sorted_array;
            }

            // Light protection (adding index.html in every document folder)
            $htmlpage = "<!DOCTYPE html>\n<html lang=\"en\">\n <head>\n <meta charset=\"utf-8\">\n <title>Not authorized</title>\n  </head>\n  <body>\n  </body>\n</html>";

            $example_cert_id = 0;
            if (is_array($default_document_array) && count(
                    $default_document_array
                ) > 0
            ) {
                foreach ($default_document_array as $media_type => $array_media) {
                    $path_documents = "/$media_type/";

                    //hack until feature #5242 is implemented
                    if ($media_type == 'images') {
                        $media_type = 'images/gallery';
                        $images_folder = $sys_course_path.$course_repository."/document/images/";

                        if (!is_dir($images_folder)) {
                            //Creating index.html
                            mkdir($images_folder, $perm);
                            $fd = fopen($images_folder.'index.html', 'w');
                            fwrite($fd, $htmlpage);
                            @chmod($images_folder.'index.html', $perm_file);
                        }
                    }

                    $course_documents_folder = $sys_course_path.$course_repository."/document/$media_type/";
                    $default_course_path = api_get_path(SYS_CODE_PATH).'default_course_document'.$path_documents;

                    if (!is_dir($course_documents_folder)) {
                        // Creating index.html
                        mkdir($course_documents_folder, $perm);
                        $fd = fopen(
                            $course_documents_folder.'index.html',
                            'w'
                        );
                        fwrite($fd, $htmlpage);
                        @chmod(
                            $course_documents_folder.'index.html',
                            $perm_file
                        );
                    }

                    if (is_array($array_media) && count($array_media) > 0) {
                        foreach ($array_media as $key => $value) {
                            if (isset($value['dir']) && !empty($value['dir'])) {
                                if (!is_dir($course_documents_folder.$value['dir'])) {
                                    //Creating folder
                                    mkdir(
                                        $course_documents_folder.$value['dir'],
                                        $perm
                                    );

                                    //Creating index.html (for light protection)
                                    $index_html = $course_documents_folder.$value['dir'].'/index.html';
                                    $fd = fopen($index_html, 'w');
                                    fwrite($fd, $htmlpage);
                                    @chmod($index_html, $perm_file);

                                    //Inserting folder in the DB
                                    $folder_path = substr(
                                        $value['dir'],
                                        0,
                                        strlen($value['dir']) - 1
                                    );
                                    $temp = explode('/', $folder_path);
                                    $title = $temp[count($temp) - 1];

                                    //hack until feature #5242 is implemented
                                    if ($title == 'gallery') {
                                        $title = get_lang(
                                            'DefaultCourseImages'
                                        );
                                    }

                                    if ($media_type == 'images/gallery') {
                                        $folder_path = 'gallery/'.$folder_path;
                                    }

                                    Database::query(
                                        "INSERT INTO $TABLETOOLDOCUMENT (c_id, path,title,filetype,size)
                                        VALUES ($course_id,'$path_documents".$folder_path."','".$title."','folder','0')"
                                    );
                                    $image_id = Database:: insert_id();

                                    Database::insert(
                                        $TABLEITEMPROPERTY,
                                        [
                                            'c_id' => $course_id,
                                            'tool' => 'document',
                                            'insert_user_id' => api_get_user_id(),
                                            'insert_date' => $now,
                                            'lastedit_date' => $now,
                                            'ref' => $image_id,
                                            'lastedit_type' => 'DocumentAdded',
                                            'lastedit_user_id' => api_get_user_id(),
                                            'to_group_id' => null,
                                            'to_user_id' =>  null,
                                            'visibility' => 0
                                        ]
                                    );
                                }
                            }

                            if (isset($value['file']) && !empty($value['file'])) {
                                if (!file_exists(
                                    $course_documents_folder.$value['file']
                                )
                                ) {
                                    //Copying file
                                    copy(
                                        $default_course_path.$value['file'],
                                        $course_documents_folder.$value['file']
                                    );
                                    chmod(
                                        $course_documents_folder.$value['file'],
                                        $perm_file
                                    );
                                    //echo $default_course_path.$value['file']; echo ' - '; echo $course_documents_folder.$value['file']; echo '<br />';
                                    $temp = explode('/', $value['file']);
                                    $file_size = filesize(
                                        $course_documents_folder.$value['file']
                                    );

                                    //hack until feature #5242 is implemented
                                    if ($media_type == 'images/gallery') {
                                        $value["file"] = 'gallery/'.$value["file"];
                                    }

                                    //Inserting file in the DB
                                    Database::query(
                                        "INSERT INTO $TABLETOOLDOCUMENT (c_id, path,title,filetype,size)
                                        VALUES ($course_id,'$path_documents".$value["file"]."','".$temp[count($temp) - 1]."','file','$file_size')"
                                    );
                                    $image_id = Database:: insert_id();
                                    if ($image_id) {

                                        $sql = "UPDATE $TABLETOOLDOCUMENT SET id = iid WHERE iid = $image_id";
                                        Database::query($sql);

                                        if ($path_documents.$value['file'] == '/certificates/default.html') {
                                            $example_cert_id = $image_id;
                                        }
                                        $docId = Database::insert(
                                            $TABLEITEMPROPERTY,
                                            [
                                                'c_id' => $course_id,
                                                'tool' => 'document',
                                                'insert_user_id' => api_get_user_id(),
                                                'insert_date' => $now,
                                                'lastedit_date' => $now,
                                                'ref' => $image_id,
                                                'lastedit_type' => 'DocumentAdded',
                                                'lastedit_user_id' => api_get_user_id(),
                                                'to_group_id' => null,
                                                'to_user_id' =>  null,
                                                'visibility' => 1
                                            ]
                                        );
                                        if ($docId) {
                                            $sql = "UPDATE $TABLEITEMPROPERTY SET id = iid WHERE iid = $docId";
                                            Database::query($sql);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }

            $agenda = new Agenda('course');
            $agenda->set_course($courseInfo);
            $agenda->addEvent(
                $now,
                $now,
                0,
                get_lang('AgendaCreationTitle'),
                get_lang('AgendaCreationContenu')
            );

            /*  Links tool */

            $link = new Link();
            $link->setCourse($courseInfo);
            $links = [
                [
                    'c_id' => $course_id,
                    'url' => 'http://www.google.com',
                    'title' => 'Google',
                    'description' => get_lang('Google'),
                    'category_id' => 0,
                    'on_homepage' => 0,
                    'target' => '_self',
                    'session_id' => 0
                ],
                [
                    'c_id' => $course_id,
                    'url' => 'http://www.wikipedia.org',
                    'title' => 'Wikipedia',
                    'description' => get_lang('Wikipedia'),
                    'category_id' => 0,
                    'on_homepage' => 0,
                    'target' => '_self',
                    'session_id' => 0
                ]
            ];

            foreach ($links as $params) {
                $link->save($params);
            }

            /* Announcement tool */
            AnnouncementManager::add_announcement(
                $courseInfo,
                0,
                get_lang('AnnouncementExampleTitle'),
                get_lang('AnnouncementEx'),
                ['everyone' => 'everyone'],
                null,
                null,
                $now
            );

            $manager = Database::getManager();

            /* Introduction text */
            $intro_text = '<p style="text-align: center;">
                            <img src="' . api_get_path(REL_CODE_PATH).'img/mascot.png" alt="Mr. Chamilo" title="Mr. Chamilo" />
                            <h2>' . get_lang('IntroductionText').'</h2>
                         </p>';

            $toolIntro = new Chamilo\CourseBundle\Entity\CToolIntro();
            $toolIntro
                ->setCId($course_id)
                ->setId(TOOL_COURSE_HOMEPAGE)
                ->setSessionId(0)
                ->setIntroText($intro_text);
            $manager->persist($toolIntro);

            $toolIntro = new Chamilo\CourseBundle\Entity\CToolIntro();
            $toolIntro
                ->setCId($course_id)
                ->setId(TOOL_STUDENTPUBLICATION)
                ->setSessionId(0)
                ->setIntroText(get_lang('IntroductionTwo'));
            $manager->persist($toolIntro);


            $toolIntro = new Chamilo\CourseBundle\Entity\CToolIntro();
            $toolIntro
                ->setCId($course_id)
                ->setId(TOOL_WIKI)
                ->setSessionId(0)
                ->setIntroText(get_lang('IntroductionWiki'));
            $manager->persist($toolIntro);

            $manager->flush();

            /*  Exercise tool */
            $exercise = new Exercise($course_id);
            $exercise->exercise = get_lang('ExerciceEx');
            $html = '<table width="100%" border="0" cellpadding="0" cellspacing="0">
                        <tr>
                        <td width="220" valign="top" align="left">
                            <img src="' . api_get_path(WEB_CODE_PATH).'default_course_document/images/mr_chamilo/doubts.png">
                        </td>
                        <td valign="top" align="left">' . get_lang('Antique').'</td></tr>
                    </table>';
            $exercise->type = 1;
            $exercise->setRandom(0);
            $exercise->active = 1;
            $exercise->results_disabled = 0;
            $exercise->description = $html;
            $exercise->save();

            $exercise_id = $exercise->id;

            $question = new MultipleAnswer();
            $question->question = get_lang('SocraticIrony');
            $question->description = get_lang('ManyAnswers');
            $question->weighting = 10;
            $question->position = 1;
            $question->course = $courseInfo;
            $question->save($exercise_id);
            $questionId = $question->id;

            $answer = new Answer($questionId, $courseInfo['real_id']);

            $answer->createAnswer(get_lang('Ridiculise'), 0, get_lang('NoPsychology'), -5, 1);
            $answer->createAnswer(get_lang('AdmitError'), 0, get_lang('NoSeduction'), -5, 2);
            $answer->createAnswer(get_lang('Force'), 1, get_lang('Indeed'), 5, 3);
            $answer->createAnswer(get_lang('Contradiction'), 1, get_lang('NotFalse'), 5, 4);

            $answer->save();

            /* Forum tool */

            require_once api_get_path(SYS_CODE_PATH).'forum/forumfunction.inc.php';

            $params = [
                'forum_category_title' => get_lang('ExampleForumCategory'),
                'forum_category_comment' => ''
            ];

            $forumCategoryId = store_forumcategory($params, $courseInfo, false);

            $params = [
                'forum_category' => $forumCategoryId,
                'forum_title' => get_lang('ExampleForum'),
                'forum_comment' => '',
                'default_view_type_group' => ['default_view_type' => 'flat'],
            ];

            $forumId = store_forum($params, $courseInfo, true);

            $forumInfo = get_forum_information($forumId, $courseInfo['real_id']);

            $params = [
                'post_title' => get_lang('ExampleThread'),
                'forum_id' => $forumId,
                'post_text' => get_lang('ExampleThreadContent'),
                'calification_notebook_title' => '',
                'numeric_calification' => '',
                'weight_calification' => '',
                'forum_category' => $forumCategoryId,
                'thread_peer_qualify' => 0,
            ];

            store_thread($forumInfo, $params, $courseInfo, false);

            /* Gradebook tool */
            $course_code = $courseInfo['code'];
            // father gradebook
            Database::query(
                "INSERT INTO $TABLEGRADEBOOK (name, description, user_id, course_code, parent_id, weight, visible, certif_min_score, session_id, document_id)
                VALUES ('$course_code','',1,'$course_code',0,100,0,75,NULL,$example_cert_id)"
            );
            $gbid = Database:: insert_id();
            Database::query(
                "INSERT INTO $TABLEGRADEBOOK (name, description, user_id, course_code, parent_id, weight, visible, certif_min_score, session_id, document_id)
                VALUES ('$course_code','',1,'$course_code',$gbid,100,1,75,NULL,$example_cert_id)"
            );
            $gbid = Database:: insert_id();
            Database::query(
                "INSERT INTO $TABLEGRADEBOOKLINK (type, ref_id, user_id, course_code, category_id, created_at, weight, visible, locked)
                VALUES (1,$exercise_id,1,'$course_code',$gbid,'$now',100,1,0)"
            );
        }

        //Installing plugins in course
        $app_plugin = new AppPlugin();
        $app_plugin->install_course_plugins($course_id);
        return true;
    }

    /**
     * @param int $course_id
     * @param int $counter
     * @param array $file
     * @param int $authorId
     */
    public static function insertDocument($course_id, $counter, $file, $authorId = 0)
    {
        $tableItem = Database::get_course_table(TABLE_ITEM_PROPERTY);
        $tableDocument = Database::get_course_table(TABLE_DOCUMENT);

        $now = api_get_utc_datetime();
        $sql = "INSERT INTO $tableDocument (id, c_id, path,title,filetype,size, readonly, session_id)
                VALUES ($counter, $course_id, '".$file['path']."', '".$file['title']."', '".$file['filetype']."', '".$file['size']."', 0, 0)";
        Database::query($sql);
        $docId = Database:: insert_id();

        $authorId = empty($authorId) ? api_get_user_id() : (int) $authorId;

        if ($docId) {
            $sql = "UPDATE $tableDocument SET id = iid WHERE iid = $docId";
            Database::query($sql);

            $id = Database::insert(
                $tableItem,
                [
                    'id' => $counter,
                    'c_id' => $course_id,
                    'tool' => 'document',
                    'insert_user_id' => $authorId,
                    'insert_date' => $now,
                    'lastedit_date' => $now,
                    'ref' => $docId,
                    'lastedit_type' => 'DocumentAdded',
                    'lastedit_user_id' => $authorId,
                    'to_group_id' => null,
                    'to_user_id' =>  null,
                    'visibility' => 0
                ]
            );

            if ($id) {
                $sql = "UPDATE $tableItem SET id = iid WHERE iid = $id";
                Database::query($sql);
            }
        }
    }

    /**
     * string2binary converts the string "true" or "false" to the boolean true false (0 or 1)
     * This is used for the Chamilo Config Settings as these store true or false as string
     * and the api_get_setting('course_create_active_tools') should be 0 or 1 (used for
     * the visibility of the tool)
     * @param string $variable
     * @author Patrick Cool, patrick.cool@ugent.be
     * @assert ('true') === true
     * @assert ('false') === false
     */
    public static function string2binary($variable)
    {
        if ($variable == 'true') {
            return true;
        }
        if ($variable == 'false') {
            return false;
        }
    }

    /**
     * Function register_course to create a record in the course table of the main database
     * @param array Course details (see code for details)
     * @return int  Created course ID
     * @todo use an array called $params instead of lots of params
     * @assert (null) === false
     */
    public static function register_course($params)
    {
        global $error_msg, $firstExpirationDelay;

        $title = $params['title'];
        $code = $params['code'];
        $visual_code = $params['visual_code'];
        $directory = $params['directory'];
        $tutor_name = isset($params['tutor_name']) ? $params['tutor_name'] : null;
        $category_code = isset($params['course_category']) ? $params['course_category'] : '';
        $course_language = isset($params['course_language']) && !empty($params['course_language']) ? $params['course_language'] : api_get_setting(
            'platformLanguage'
        );
        $user_id = empty($params['user_id']) ? api_get_user_id() : intval($params['user_id']);
        $department_name = isset($params['department_name']) ?
            $params['department_name'] : null;
        $department_url = isset($params['department_url']) ?
            $params['department_url'] : null;
        $disk_quota = isset($params['disk_quota']) ?
            $params['disk_quota'] : null;

        if (!isset($params['visibility'])) {
            $default_course_visibility = api_get_setting(
                'courses_default_creation_visibility'
            );
            if (isset($default_course_visibility)) {
                $visibility = $default_course_visibility;
            } else {
                $visibility = COURSE_VISIBILITY_OPEN_PLATFORM;
            }
        } else {
            $visibility = $params['visibility'];
        }

        $subscribe = isset($params['subscribe']) ? (int) $params['subscribe'] : $visibility == COURSE_VISIBILITY_OPEN_PLATFORM ? 1 : 0;
        $unsubscribe = isset($params['unsubscribe']) ? intval($params['unsubscribe']) : 0;
        $expiration_date = isset($params['expiration_date']) ? $params['expiration_date'] : null;
        $teachers = isset($params['teachers']) ? $params['teachers'] : null;
        $status = isset($params['status']) ? $params['status'] : null;

        $TABLECOURSE = Database::get_main_table(TABLE_MAIN_COURSE);
        $TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);

        $ok_to_register_course = true;

        // Check whether all the needed parameters are present.
        if (empty($code)) {
            $error_msg[] = 'courseSysCode is missing';
            $ok_to_register_course = false;
        }
        if (empty($visual_code)) {
            $error_msg[] = 'courseScreenCode is missing';
            $ok_to_register_course = false;
        }
        if (empty($directory)) {
            $error_msg[] = 'courseRepository is missing';
            $ok_to_register_course = false;
        }

        if (empty($title)) {
            $error_msg[] = 'title is missing';
            $ok_to_register_course = false;
        }

        if (empty($expiration_date)) {
            $expiration_date = api_get_utc_datetime(
                time() + $firstExpirationDelay
            );
        } else {
            $expiration_date = api_get_utc_datetime($expiration_date);
        }

        if ($visibility < 0 || $visibility > 4) {
            $error_msg[] = 'visibility is invalid';
            $ok_to_register_course = false;
        }

        if (empty($disk_quota)) {
            $disk_quota = api_get_setting('default_document_quotum');
        }

        $time = api_get_utc_datetime();

        if (stripos($department_url, 'http://') === false && stripos(
                $department_url,
                'https://'
            ) === false
        ) {
            $department_url = 'http://'.$department_url;
        }
        //just in case
        if ($department_url == 'http://') {
            $department_url = '';
        }
        $course_id = 0;

        if ($ok_to_register_course) {
            // Here we must add 2 fields.
            $course_id = Database::insert(
                $TABLECOURSE,
                [
                    'code' => $code,
                    'directory' => $directory,
                    'course_language' => $course_language,
                    'title' => $title,
                    'description' => get_lang('CourseDescription'),
                    'category_code' => $category_code,
                    'visibility' => $visibility,
                    'show_score' => 1,
                    'disk_quota' => intval($disk_quota),
                    'creation_date' => $time,
                    'expiration_date' => $expiration_date,
                    'last_edit' => $time,
                    'last_visit' => NULL,
                    'tutor_name' => $tutor_name,
                    'department_name' => $department_name,
                    'department_url' => $department_url,
                    'subscribe' => intval($subscribe),
                    'unsubscribe' => intval($unsubscribe),
                    'visual_code' => $visual_code
                ]
            );

            if ($course_id) {
                $sort = api_max_sort_value('0', api_get_user_id());
                // Default true
                $addTeacher = isset($params['add_user_as_teacher']) ? $params['add_user_as_teacher'] : true;
                if ($addTeacher) {

                    $i_course_sort = CourseManager:: userCourseSort(
                        $user_id,
                        $code
                    );
                    if (!empty($user_id)) {
                        $sql = "INSERT INTO ".$TABLECOURSUSER." SET
                                c_id     = '" . $course_id."',
                                user_id         = '" . intval($user_id)."',
                                status          = '1',
                                is_tutor        = '0',
                                sort            = '" . ($i_course_sort)."',
                                relation_type = 0,
                                user_course_cat = '0'";
                        Database::query($sql);
                    }
                }

                if (!empty($teachers)) {
                    if (!is_array($teachers)) {
                        $teachers = array($teachers);
                    }
                    foreach ($teachers as $key) {
                        //just in case
                        if ($key == $user_id) {
                            continue;
                        }
                        if (empty($key)) {
                            continue;
                        }
                        $sql = "INSERT INTO ".$TABLECOURSUSER." SET
                            c_id     = '" . Database::escape_string($course_id)."',
                            user_id         = '" . Database::escape_string($key)."',
                            status          = '1',
                            is_tutor        = '0',
                            sort            = '" . ($sort + 1)."',
                            relation_type = 0,
                            user_course_cat = '0'";
                        Database::query($sql);
                    }
                }

                // Adding the course to an URL.
                if (api_is_multiple_url_enabled()) {
                    $url_id = 1;
                    if (api_get_current_access_url_id() != -1) {
                        $url_id = api_get_current_access_url_id();
                    }
                    UrlManager::add_course_to_url($course_id, $url_id);
                } else {
                    UrlManager::add_course_to_url($course_id, 1);
                }

                // Add event to the system log.
                $user_id = api_get_user_id();
                Event::addEvent(
                    LOG_COURSE_CREATE,
                    LOG_COURSE_CODE,
                    $code,
                    api_get_utc_datetime(),
                    $user_id,
                    $course_id
                );

                $send_mail_to_admin = api_get_setting(
                    'send_email_to_admin_when_create_course'
                );

                // @todo Improve code to send to all current portal administrators.
                if ($send_mail_to_admin == 'true') {
                    $siteName = api_get_setting('siteName');
                    $recipient_email = api_get_setting('emailAdministrator');
                    $recipient_name = api_get_person_name(
                        api_get_setting('administratorName'),
                        api_get_setting('administratorSurname')
                    );
                    $iname = api_get_setting('Institution');
                    $subject = get_lang(
                            'NewCourseCreatedIn'
                        ).' '.$siteName.' - '.$iname;
                    $message = get_lang(
                            'Dear'
                        ).' '.$recipient_name.",\n\n".get_lang(
                            'MessageOfNewCourseToAdmin'
                        ).' '.$siteName.' - '.$iname."\n";
                    $message .= get_lang('CourseName').' '.$title."\n";
                    $message .= get_lang(
                            'Category'
                        ).' '.$category_code."\n";
                    $message .= get_lang('Tutor').' '.$tutor_name."\n";
                    $message .= get_lang('Language').' '.$course_language;

                    $userInfo = api_get_user_info($user_id);

                    $additionalParameters = array(
                        'smsType' => SmsPlugin::NEW_COURSE_BEEN_CREATED,
                        'userId' => $user_id,
                        'courseName' => $title,
                        'creatorUsername' => $userInfo['username']
                    );

                    api_mail_html(
                        $recipient_name,
                        $recipient_email,
                        $subject,
                        $message,
                        $siteName,
                        $recipient_email,
                        null,
                        null,
                        null,
                        $additionalParameters
                    );
                }
            }
        }

        return $course_id;
    }

    /**
     * Generate a new id for c_tool table
     * @param int $courseId The course id
     * @return int the new id
     */
    public static function generateToolId($courseId)
    {
        $newIdResultData = Database::select(
            'id + 1 AS new_id',
            Database::get_course_table(TABLE_TOOL_LIST),
            [
                'where' => ['c_id = ?' => intval($courseId)],
                'order' => 'id',
                'limit' => 1
            ],
            'first'
        );

        if ($newIdResultData === false) {
            return 1;
        }

        return $newIdResultData['new_id'] > 0 ? $newIdResultData['new_id'] : 1;
    }

}