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

/**
 * @package chamilo.admin
 * @todo use formvalidator
 */

// name of the language file that needs to be included.
$language_file = 'admin';

// resetting the course id.
$cidReset = true;

require_once '../inc/global.inc.php';
require_once api_get_path(LIBRARY_PATH).'add_courses_to_session_functions.lib.php';

$sessionId = isset($_GET['id_session']) ? intval($_GET['id_session']) : null;
$add = isset($_GET['add']) ? Security::remove_XSS($_GET['add']) : null;

SessionManager::protect_session_edit($sessionId);

$xajax = new xajax();
$xajax->registerFunction(array('search_courses', 'AddCourseToSession', 'search_courses'));

// Setting the section (for the tabs)
$this_section = SECTION_PLATFORM_ADMIN;

// setting breadcrumbs
$interbreadcrumb[] = array('url' => 'index.php', 'name' => get_lang('PlatformAdmin'));
$interbreadcrumb[] = array('url' => 'session_list.php','name' => get_lang('SessionList'));
$interbreadcrumb[] = array('url' => "resume_session.php?id_session=".$sessionId, "name" => get_lang('SessionOverview'));

// Database Table Definitions
$tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
$tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
$tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);

// setting the name of the tool
$tool_name= get_lang('SubscribeCoursesToSession');

$add_type = 'multiple';
if (isset($_GET['add_type']) && $_GET['add_type']!=''){
    $add_type = Security::remove_XSS($_REQUEST['add_type']);
}

$page = isset($_GET['page']) ? Security::remove_XSS($_GET['page']) : null;

$xajax->processRequests();

$htmlHeadXtra[] = $xajax->getJavascript('../inc/lib/xajax/');
$htmlHeadXtra[] = '<script>
function add_course_to_session(code, content) {
	document.getElementById("course_to_add").value = "";
	document.getElementById("ajax_list_courses_single").innerHTML = "";
	destination = document.getElementById("destination");
	for (i=0;i<destination.length;i++) {
		if (destination.options[i].text == content) {
            return false;
		}
	}

	destination.options[destination.length] = new Option(content,code);
	destination.selectedIndex = -1;
	sortOptions(destination.options);
}

function remove_item(origin)
{
	for(var i = 0 ; i<origin.options.length ; i++) {
		if(origin.options[i].selected) {
			origin.options[i]=null;
			i = i-1;
		}
	}
}
</script>';

$errorMsg = '';
$CourseList = $SessionList = array();
$courses = $sessions = array();

if (isset($_POST['formSent']) && $_POST['formSent']) {

    $courseList = $_POST['SessionCoursesList'];
    SessionManager::add_courses_to_session($sessionId, $courseList, true);
    Display::addFlash(Display::return_message(get_lang('Updated')));

    if (isset($add)) {
        header('Location: add_users_to_session.php?id_session='.$sessionId.'&add=true');
    } else {
        header('Location: resume_session.php?id_session='.$sessionId);
    }

    exit;
}

// display the header
Display::display_header($tool_name);

if ($add_type == 'multiple') {
    $link_add_type_unique = '<a href="'.api_get_self().'?id_session='.$sessionId.'&add='.$add.'&add_type=unique">'.
        Display::return_icon('single.gif').get_lang('SessionAddTypeUnique').'</a>';
    $link_add_type_multiple = Display::return_icon('multiple.gif').get_lang('SessionAddTypeMultiple').' ';
} else {
    $link_add_type_unique = Display::return_icon('single.gif').get_lang('SessionAddTypeUnique').'&nbsp;&nbsp;&nbsp;';
    $link_add_type_multiple = '<a href="'.api_get_self().'?id_session='.$sessionId.'&add='.$add.'&add_type=multiple">'.
        Display::return_icon('multiple.gif').get_lang('SessionAddTypeMultiple').'</a>';
}

// the form header
$session_info = SessionManager::fetch($sessionId);
echo '<div class="actions">';
echo $link_add_type_unique.$link_add_type_multiple;
echo '</div>';

$ajax_search = $add_type == 'unique' ? true : false;
$nosessionCourses = $sessionCourses = array();
if ($ajax_search) {

    $sql="SELECT code, title, visual_code, id_session
			FROM $tbl_course course
			INNER JOIN $tbl_session_rel_course session_rel_course
				ON course.code = session_rel_course.course_code
				AND session_rel_course.id_session = ".intval($sessionId)."
			ORDER BY ".(sizeof($courses)?"(code IN(".implode(',',$courses).")) DESC,":"")." title";

    if (api_is_multiple_url_enabled()) {
        $tbl_course_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
        $access_url_id = api_get_current_access_url_id();
        if ($access_url_id != -1){
            $sql="SELECT code, title, visual_code, id_session
			FROM $tbl_course course
			INNER JOIN $tbl_session_rel_course session_rel_course
				ON course.code = session_rel_course.course_code
				AND session_rel_course.id_session = ".intval($sessionId)."
				INNER JOIN $tbl_course_rel_access_url url_course ON (url_course.course_code=course.code)
				WHERE access_url_id = $access_url_id
			ORDER BY ".(sizeof($courses)?"(code IN(".implode(',',$courses).")) DESC,":"")." title";
        }
    }

    $result = Database::query($sql);
    $Courses = Database::store_result($result);

    foreach ($Courses as $course) {
        $sessionCourses[$course['code']] = $course ;
    }
} else {
    $sql = "SELECT code, title, visual_code, id_session
			FROM $tbl_course course
			LEFT JOIN $tbl_session_rel_course session_rel_course
				ON course.code = session_rel_course.course_code
				AND session_rel_course.id_session = ".intval($sessionId)."
			ORDER BY ".(sizeof($courses)?"(code IN(".implode(',',$courses).")) DESC,":"")." title";

    if (api_is_multiple_url_enabled()) {
        $tbl_course_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
        $access_url_id = api_get_current_access_url_id();
        if ($access_url_id != -1){
            $sql="SELECT code, title, visual_code, id_session
				FROM $tbl_course course
				LEFT JOIN $tbl_session_rel_course session_rel_course
					ON course.code = session_rel_course.course_code
					AND session_rel_course.id_session = ".intval($sessionId)."
				INNER JOIN $tbl_course_rel_access_url url_course ON (url_course.course_code=course.code)
				WHERE access_url_id = $access_url_id
				ORDER BY ".(sizeof($courses)?"(code IN(".implode(',',$courses).")) DESC,":"")." title";
        }
    }
    $result = Database::query($sql);
    $Courses = Database::store_result($result);
    foreach ($Courses as $course) {
        if ($course['id_session'] == $sessionId) {
            $sessionCourses[$course['code']] = $course ;
        } else {
            $nosessionCourses[$course['code']] = $course ;
        }
    }
}
unset($Courses);
?>
    <form name="formulaire" method="post" action="<?php echo api_get_self(); ?>?page=<?php echo $page; ?>&id_session=<?php echo $sessionId; ?><?php if(!empty($_GET['add'])) echo '&add=true' ; ?>" style="margin:0px;" <?php if($ajax_search){echo ' onsubmit="valide();"';}?>>
        <legend><?php echo $tool_name.' ('.$session_info['name'].')'; ?></legend>
        <input type="hidden" name="formSent" value="1" />

        <?php
        if (!empty($errorMsg)) {
            Display::display_normal_message($errorMsg); //main API
        }
        ?>

        <table border="0" cellpadding="5" cellspacing="0" width="100%" align="center">
            <tr>
                <td width="45%" align="center"><b><?php echo get_lang('CourseListInPlatform') ?> :</b></td>

                <td width="10%">&nbsp;</td>
                <td align="center" width="45%"><b><?php echo get_lang('CourseListInSession') ?> :</b></td>
            </tr>

            <?php if($add_type == 'multiple') { ?>
                <tr><td width="45%" align="center">
                        <?php echo get_lang('FirstLetterCourse'); ?> :
                        <select name="firstLetterCourse" onchange = "xajax_search_courses(this.value,'multiple')">
                            <option value="%">--</option>
                            <?php
                            echo Display :: get_alphabet_options();
                            echo Display :: get_numeric_options(0,9,'');
                            ?>
                        </select>
                    </td>
                    <td>&nbsp;</td></tr>
            <?php } ?>

            <tr>
                <td width="45%" align="center">

                    <?php
                    if (!($add_type == 'multiple')) {
                        ?>
                        <input type="text" id="course_to_add" onkeyup="xajax_search_courses(this.value,'single')" />
                        <div id="ajax_list_courses_single"></div>
                    <?php
                    } else {
                        ?>
                        <div id="ajax_list_courses_multiple">
                            <select id="origin" name="NoSessionCoursesList[]" multiple="multiple" size="20" style="width:360px;"> <?php
                                foreach($nosessionCourses as $enreg) {
                                    ?>
                                    <option value="<?php echo $enreg['code']; ?>" <?php echo 'title="'.htmlspecialchars($enreg['title'].' ('.$enreg['visual_code'].')',ENT_QUOTES).'"'; if(in_array($enreg['code'],$CourseList)) echo 'selected="selected"'; ?>>
                                        <?php echo $enreg['title'].' ('.$enreg['visual_code'].')'; ?>
                                    </option>
                                <?php
                                }
                                ?></select>
                        </div>
                    <?php
                    }
                    unset($nosessionCourses);
                    ?>
                </td>
                <td width="10%" valign="middle" align="center">
                    <?php
                    if ($ajax_search) {
                        ?>
                        <button class="arrowl" type="button" onclick="remove_item(document.getElementById('destination'))"></button>
                    <?php
                    } else {
                        ?>
                        <button class="arrowr" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))"></button>
                        <br /><br />
                        <button class="arrowl" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))"></button>
                    <?php
                    }
                    ?>
                    <br /><br /><br /><br /><br /><br />
                    <?php
                    if (isset($_GET['add'])) {
                        echo '<button class="save" type="button" value="" onclick="valide()" >'.get_lang('NextStep').'</button>';
                    } else {
                        echo '<button class="save" type="button" value="" onclick="valide()" >'.get_lang('SubscribeCoursesToSession').'</button>';
                    }
                    ?>
                </td>
                <td width="45%" align="center"><select id='destination' name="SessionCoursesList[]" multiple="multiple" size="20" style="width:360px;">

                        <?php
                        foreach($sessionCourses as $enreg) {
                            ?>
                            <option value="<?php echo $enreg['code']; ?>" title="<?php echo htmlspecialchars($enreg['title'].' ('.$enreg['visual_code'].')',ENT_QUOTES); ?>">
                                <?php echo $enreg['title'].' ('.$enreg['visual_code'].')'; ?>
                            </option>
                        <?php
                        }
                        unset($sessionCourses);
                        ?>
                    </select></td>
            </tr>
        </table>
    </form>
    <script>
        function moveItem(origin , destination) {
            for(var i = 0 ; i<origin.options.length ; i++) {
                if(origin.options[i].selected) {
                    destination.options[destination.length] = new Option(origin.options[i].text,origin.options[i].value);
                    origin.options[i]=null;
                    i = i-1;
                }
            }
            destination.selectedIndex = -1;
            sortOptions(destination.options);
        }

        function sortOptions(options) {
            newOptions = new Array();
            for (i = 0 ; i<options.length ; i++) {
                newOptions[i] = options[i];
            }

            newOptions = newOptions.sort(mysort);
            options.length = 0;

            for(i = 0 ; i < newOptions.length ; i++){
                options[i] = newOptions[i];
            }
        }

        function mysort(a, b) {
            if(a.text.toLowerCase() > b.text.toLowerCase()){
                return 1;
            }
            if(a.text.toLowerCase() < b.text.toLowerCase()){
                return -1;
            }
            return 0;
        }

        function valide() {
            var options = document.getElementById('destination').options;
            for (i = 0 ; i<options.length ; i++)
                options[i].selected = true;

            document.forms.formulaire.submit();
        }
    </script>
<?php
Display::display_footer();