/**
* 判断用户是否有权限参加此考试,判断包括:
* 1.是否在权限列表 0
* 2.考试是否存在或可见 -1
* 3.如果是vip考试,是否在不同机器上登陆过 -2
* 4.可选。是否已经交卷 -3
* @param number $eid 比赛编号
* @param string $user_id 用户ID]
* @param boolean $havetaken 是否判断已经参加考试过
* @return number|array 返回数字表示没有权限，否则有
*/
public function checkExamPrivilege($eid, $user_id, $havetaken = false)
{
$hasPrivilege = $this->getPrivilege($user_id, $eid);
if (!(checkAdmin(2) || $hasPrivilege)) {
return 0;
}
$field = array('title', 'start_time', 'end_time', 'isvip', 'visible');
$row = ExamBaseModel::instance()->getExamInfoById($eid, $field);
if (empty($row)) {
return -1;
}
if (C('OJ_VIP_CONTEST')) {
if ($row['isvip'] == 'Y') {
$today = date('Y-m-d');
$ip1 = $_SERVER['REMOTE_ADDR'];
$sql = "SELECT `user_id` FROM `loginlog` WHERE `user_id`='{$user_id}' AND `time`>='{$today}' AND ip<>'{$ip1}' AND\n\t\t\t\t `user_id` NOT IN( SELECT `user_id` FROM `privilege` WHERE `rightstr`='administrator' or `rightstr`='contest_creator') ORDER BY `time` DESC limit 0,1";
$tmprow = M()->query($sql);
if ($tmprow) {
return -2;
}
}
}
if ($havetaken) {
$where = array('user_id' => $user_id, 'exam_id' => $eid);
$field = array('score');
$score = StudentBaseModel::instance()->queryOne($where, $field);
if (!is_null($score['score']) && $score['score'] >= 0) {
return -3;
}
}
return $row;
}
public function index()
{
if (!$this->isSuperAdmin()) {
if ($this->isCreator()) {
$userId = $this->userInfo['user_id'];
$_where = array('isprivate' => 0, 'creator' => array('eq', $userId), '_logic' => 'or');
$where = array('visible' => 'Y', '_complex' => $_where, '_logic' => 'and');
} else {
$where = array('user_id' => $this->userInfo['user_id']);
$fields = array('rightstr');
$privileges = M('ex_privilege')->field($fields)->where($where)->select();
$examIds = array(0);
foreach ($privileges as $privilege) {
$rightstr = $privilege['rightstr'];
$examIds[] = intval(substr($rightstr, 1));
}
$where = array('visible' => 'Y', 'exam_id' => array('in', $examIds));
}
} else {
$where = array('visible' => 'Y');
}
$mypage = splitpage('exam', $where);
$where['order'] = array('end_time desc');
$where['limit'] = $mypage['sqladd'];
$field = array('exam_id', 'title', 'start_time', 'end_time');
$row = ExamBaseModel::instance()->queryData($where, $field);
$this->zadd('row', $row);
$this->zadd('mypage', $mypage);
$this->auto_display();
}
/**
* 是否可以查看某场考试的信息
* @param $eid
* @param bool|false $isReturn
* @return mixed
*/
protected function isCanWatchInfo($eid, $isReturn = false)
{
$field = array('creator', 'isprivate', 'end_time');
$res = ExamBaseModel::instance()->getExamInfoById(intval($eid), $field);
$hasPrivilege = false;
if ($res['isprivate'] == PrivilegeBaseModel::PROBLEM_PUBLIC && $this->isCreator()) {
$hasPrivilege = true;
}
if (!($this->isSuperAdmin() || $this->isOwner4ExamByUserId($res['creator']) || $hasPrivilege)) {
$this->echoError('You have no privilege of this exam');
}
if ($isReturn) {
return $res;
}
}
public function exam()
{
if (!$this->isOwner4ExamByExamId($this->id)) {
$this->echoError('You have no privilege!');
} else {
$data = array('visible' => 'N');
ExamBaseModel::instance()->updateById($this->id, $data);
$this->success("考试删除成功", U("Teacher/Index/index", array('page' => $this->page)), 2);
//if the exam was deleted
//the info of exam was deleted
// $query="DELETE FROM `exp_question` WHERE `exam_id`='$id'";
// $query="DELETE FROM `ex_privilege` WHERE `rightstr`='e$id'";
// $query="DELETE FROM `ex_stuanswer` WHERE `exam_id`='$id'";
// $query="DELETE FROM `ex_student` WHERE `exam_id`='$id'";
}
}
private function saveFillAnswer($user_id, $eid, $issave)
{
$cntfill = 0;
$tempsql = "";
$fillsum = 0;
$fillq = $this->getQuestion4ExamByType($eid, FillBaseModel::FILL_PROBLEM_TYPE, $issave);
if (!$issave) {
$field = array('fillscore', 'prgans', 'prgfill');
$score = ExamBaseModel::instance()->getExamInfoById($eid, $field);
}
foreach ($fillq as $value) {
$aid = $value['answer_id'];
$fid = $value['fill_id'];
$name = $fid . "tkda";
if (isset($_POST["{$name}{$aid}"])) {
$myanswer = $_POST["{$name}{$aid}"];
$myanswer = test_input($myanswer);
$myanswer = addslashes($myanswer);
if ($cntfill == 0) {
$tempsql = "INSERT INTO `ex_stuanswer` VALUES('{$user_id}','{$eid}','3','{$fid}','{$aid}','{$myanswer}')";
$cntfill = 1;
} else {
$tempsql = $tempsql . ",('{$user_id}','{$eid}','3','{$fid}','{$aid}','{$myanswer}')";
}
if (!$issave) {
$rightans = addslashes($value['answer']);
if ($myanswer == $rightans && strlen($myanswer) == strlen($rightans)) {
if ($value['kind'] == 1) {
$fillsum += $score['fillscore'];
} else {
if ($value['kind'] == 2) {
$fillsum = $fillsum + $score['prgans'] / $value['answernum'];
} else {
if ($value['kind'] == 3) {
$fillsum = $fillsum + $score['prgfill'] / $value['answernum'];
}
}
}
}
}
}
}
if (!empty($tempsql)) {
$tempsql = $tempsql . " on duplicate key update `answer`=values(`answer`)";
M()->execute($tempsql);
}
if (!$issave) {
return $fillsum;
}
}
public function getBaseScoreByExamId($eid)
{
$field = array('choosescore', 'judgescore', 'fillscore', 'prgans', 'prgfill', 'programscore');
$allScore = ExamBaseModel::instance()->getExamInfoById($eid, $field);
return $allScore;
}
private function dojudgeone($eid, $userId)
{
$field = array('start_time', 'end_time');
$prirow = ExamBaseModel::instance()->getExamInfoById($eid, $field);
$start_timeC = strftime("%Y-%m-%d %X", strtotime($prirow['start_time']));
$end_timeC = strftime("%Y-%m-%d %X", strtotime($prirow['end_time']));
$rightstr = "e{$eid}";
$cnt1 = M('ex_privilege')->where("user_id='%s' and rightstr='%s'", $userId, $rightstr)->count();
if ($cnt1 == 0) {
$this->echoError('Student ID is Wrong!');
return false;
}
if (time() < $start_timeC) {
$this->echoError('Exam Not Start');
}
$mark = M('ex_student')->where("exam_id=%d and user_id='%s'", $eid, $userId)->count();
$this->rejudgepaper($userId, $eid, $start_timeC, $end_timeC, $mark);
return true;
}
private function getEachProgramAvgScore($programIds, $personCnt, $sqladd)
{
$examId = $this->eid;
$ans = array();
foreach ($programIds as $_programId) {
$programId = $_programId['question_id'];
if ($personCnt == 0) {
$ans[$programId] = 0;
continue;
}
$allScore = ExamService::instance()->getBaseScoreByExamId($examId);
$examBase = ExamBaseModel::instance()->getById($examId);
$sTime = $examBase['start_time'];
$eTime = $examBase['end_time'];
$programScore = $allScore['programscore'];
$sql = "select (sum(rate) * {$programScore} / {$personCnt}) as r from (" . "select user_id, if(max(pass_rate)=0.99, 1, max(pass_rate)) as rate from solution " . "where problem_id={$programId} and pass_rate > 0 and " . "in_date>='{$sTime}' and in_date<='{$eTime}' {$sqladd} group by user_id" . ") t";
$res = M()->query($sql);
if (empty($res)) {
$ans[$programId] = 0;
} else {
$ans[$programId] = isset($res[0]['r']) ? $res[0]['r'] : 0;
}
}
return $ans;
}
public function copyOneExam()
{
$eid = I('get.eid', 0, 'intval');
$row = ExamBaseModel::instance()->getExamInfoById($eid);
if (empty($row)) {
$this->echoError("No Such Exam!");
}
if (!$this->isOwner4ExamByUserId($row['creator'])) {
$this->echoError('You have no privilege!');
} else {
// copy exam's base info
unset($row['exam_id']);
$row['creator'] = $this->userInfo['user_id'];
$examId = ExamBaseModel::instance()->insertData($row);
if (empty($examId)) {
$this->echoError("复制考试失败,请刷新页面重试");
}
// copy exam's problem
$field = array('exam_id', 'question_id', 'type');
$res = QuestionBaseModel::instance()->getQuestionByExamId($eid, $field);
foreach ($res as &$r) {
$r['exam_id'] = $examId;
}
unset($r);
QuestionBaseModel::instance()->insertQuestions($res);
$this->success('考试复制成功!', U('/Teacher'), 1);
}
}
