<?php
/****************************************************************
 *  moodle.func.php by Fumi.Iseki for Modlos
 *
 *
 * function  hasPermit($courseid)
 * function  get_display_username($firstname, $lastname)
 * function  get_names_from_display_username($username)
 *
 * function  get_userinfo_by_username($username)
 * function  get_userinfo_by_name($firstname, $lastname='')
 * function  get_userinfo_by_id($id)
 *
 ****************************************************************/


if (!defined('CMS_MODULE_PATH')) exit();

require_once(realpath(CMS_MODULE_PATH.'/include/jbxl_moodle_tools.php'));


function  hasPermit($course_id=0)
{
    global $USER;

    if ($USER->id==0) return false;
    if (isguestuser($USER->id)) return false;
    if (jbxl_is_admin($USER->id)) return true;
    if ($course_id==0 or $course_id==null) return false;

    $cntxt = jbxl_get_course_context($course_id);
    if (jbxl_is_teacher($USER->id, $cntxt, false)) return true;
    if (jbxl_is_assistant($USER->id, $cntxt)) return true;

    return false;
}


//
// only use to display
//

function  get_display_username($firstname, $lastname)
{
    global $CFG;

    if ($CFG->fullnamedisplay=='lastname firstname') {
        $username = $lastname.' '.$firstname;
    }
    else if ($CFG->fullnamedisplay=='language' and current_language()=='ja_utf8') {
        $username = $lastname.' '.$firstname;
    }
    else {
        $username = $firstname.' '.$lastname;
    }

    if ($username==' ') $username = '';

    return $username;
}


function  get_names_from_display_username($username)
{
    global $CFG;

    //$names = explode(' ', $username);
    $names = preg_split("/ /", $username, 0, PREG_SPLIT_NO_EMPTY);
    if ($names==null) return null;

    if ($CFG->fullnamedisplay=='lastname firstname') {
        $firstN = $names[1];
        $lastN  = $names[0];
    }
    else if ($CFG->fullnamedisplay=='language' and current_language()=='ja_utf8') {
        $firstN = $names[1];
        $lastN  = $names[0];
    }
    else {
        $firstN = $names[0];
        $lastN  = $names[1];
    }
    
    $retname['firstname'] = $firstN;
    $retname['lastname']  = $lastN;

    return $retname;
}


function  get_userinfo_by_username($username)
{
    global $DB;

    $user_info = $DB->get_record('user', array('username'=>$username, 'deleted'=>'0'));
    return $user_info;
}


function  get_userinfo_by_name($firstname, $lastname='')
{
    global $DB;

    if ($lastname=='') {
        $names = preg_split("/ /", $firstname, 0, PREG_SPLIT_NO_EMPTY);
        $firstname = $names[0];
        $lastname  = $names[1];
    }

    $user_infos = $DB->get_records('user', array('firstname'=>$firstname, 'lastname'=>$lastname, 'deleted'=>'0'));
    $user_info = current($user_infos);
    return $user_info;
}


function  get_userinfo_by_id($id)
{
    global $DB;

    if ($id<=0) return null;

    $user_info = $DB->get_record('user', array('id'=>$id, 'deleted'=>'0'));
    return $user_info;
}