<?php
class course_request_form extends moodleform {
    function definition() {
        $mform    =& $this->_form;

        $mform->addElement('text','fullname',get_string("fullname"),'maxlength="254" size="50"');
        $mform->addRule('fullname',get_string('missingshortname'),'required', null, 'client');
        $mform->setType('fullname', PARAM_TEXT);

        $mform->addElement('text','shortname',get_string("shortname"),'maxlength="15" size="10"');
        $mform->addRule('shortname',get_string('missingfullname'),'required', null, 'client');
        $mform->setType('shortname', PARAM_TEXT);

        $mform->addElement('htmleditor','summary',get_string("summary"),array('rows'=>'15','cols'=>'50'));
        $mform->addRule('summary',get_string('missingsummary'),'required', null, 'client');
        $mform->setType('summary', PARAM_RAW);

        $mform->addElement('textarea','reason',get_string("courserequestreason"),array('rows'=>'15','cols'=>'50'));
        $mform->addRule('reason',get_string('missingreqreason'),'required', null, 'client');
        $mform->setType('reason', PARAM_TEXT);

        $mform->addElement('text','password',get_string("enrolmentkey"),'size="25"');
        $mform->setType('password', PARAM_RAW);


        $mform->addElement('submit','',get_string("savechanges"));
    }

    function validation($data) {
        $errors=array();
        $foundcourses = null;
        $foundreqcourses = null;

        if (!empty($data['shortname'])) {
            $foundcourses = get_records("course", "shortname", $data['shortname']);
            $foundreqcourses = get_records("course_request", "shortname", $data['shortname']);
        }
        if (!empty($foundreqcourses)) {
            if (!empty($foundcourses)) {
                $foundcourses = array_merge($foundcourses,$foundreqcourses);
            } else {
                $foundcourses = $foundreqcourses;
            }
        }

        if (!empty($foundcourses)) {

            if (!empty($foundcourses)) {
                foreach ($foundcourses as $foundcourse) {
                    if (isset($foundcourse->requester) && $foundcourse->requester) {
                        $pending = 1;
                        $foundcoursenames[] = $foundcourse->fullname.' [*]';
                    } else {
                        $foundcoursenames[] = $foundcourse->fullname;
                    }
                }
                $foundcoursenamestring = addslashes(implode(',', $foundcoursenames));

                $errors["shortname"] = get_string("shortnametaken", "", $foundcoursenamestring);
                if (!empty($pending)) {
                    $errors["shortname"] .= get_string('starpending');
                }
            }
        }
        if (0==count($errors)){
            return true;
        }else {
            return $errors;
        }

    }


}
?>