<?php

// Midified by Fumi.Iseki 2007/03/21

//generates sessions and updates autoattend	
require_once('../../config.php');
require_once('lib.php');

$courseid = required_param('course', PARAM_INT);
$attsid   = optional_param('attsid', '', PARAM_INT);
$userid   = optional_param('userid', '');

$fromform = optional_param('fromform', '');
$submit   = optional_param('esv', '');
$teacher  = $USER->id;


// return
if (!empty($submit) && $submit==get_string('return', 'block_autoattend')) {
	if ($fromform=='updateUser') redirect('index.php?course='.$courseid.'&amp;student='.$userid);
	redirect('index.php?course='.$courseid);
}

if (empty($attsid) && $fromform=='updateAttendance') {
	redirect('index.php?course='.$courseid, get_string('missinfo', 'block_autoattend'), 3);
}
if (empty($userid) && $fromform=='updateUser') {
	redirect('index.php?course='.$courseid, get_string('missinfo', 'block_autoattend'), 3);
}


//
if (! $course = get_record('course', 'id', $courseid)) {
	error(get_string('courseidwrong','block_autoattend'));
}

require_login($course->id);

if (!isteacher($course->id)) {
	error(get_string('notaccessstudent','block_autoattend'));
}

if (empty($userid)) $userid = $USER->id;
if (! $user = get_record('user', 'id', $userid) ) {
	error(get_string('nosuchuser','block_autoattend'));
}


$attids    = array();			// stores ids
$status	   = array();			// stores status 
$prvstatus = array();			// stores previus status
$remarks   = array();			// stores remarks if any

foreach($_POST as $key => $value) {
	if (substr($key,0,8) == 'statusid') {
		$aid  = substr($key, 8, strlen($key)-8);	
		$attsids[] = $aid;			// radioボタンを選択していない場合は備考は無効
		$status[$aid]  = $value;
	}
	if (substr($key,0,9) == 'prvstatus') {
		$aid = substr($key, 9, strlen($key)-9);
		$prvstatus[$aid] = $value;		
	}
	if (substr($key,0,7) == 'remarks') {
		$aid = substr($key, 7, strlen($key)-7);
		$remarks[$aid] = $value;		
	}
}


// 学生データの書き込み
foreach($attsids as $att) {
	if ($fromform=='updateUser') {
		//$userid = $userid;
		$attsid  = $att;
	}
	else {
		$userid = $att;
		//$attsid = $attsid
	}
	$calledtime = time();
	
	$std = get_record('autoattend_students', 'attsid', $attsid, 'studentid', $userid);

	$result = "";
	$called = "";
	if ($std) {
		if ($status[$att]!=$prvstatus[$att]) {
			$called			 = 'M';
			$rec->status 	 = $status[$att];
			$rec->called 	 = $called;
			$rec->calledby	 = $teacher;
			$rec->calledtime = $calledtime; 
		}
		$rec->id 		= $std->id;
		$rec->attsid 	= $attsid;
		$rec->studentid = $userid;
		$rec->remarks 	= $remarks[$att];		

		$result = update_record('autoattend_students', $rec);
		unset($rec);
	} 
	else {	// new student record
		if ($status[$att]!=$prvstatus[$att]) $called = 'M';
		else  								 $called = 'D';
		$rec->attsid 	 = $attsid;
		$rec->studentid  = $userid;
		$rec->status 	 = $status[$att];
		$rec->called 	 = $called;
		$rec->calledby 	 = $teacher;
		$rec->calledtime = $calledtime;
		$rec->remarks 	 = $remarks[$att];		

		$result = insert_record('autoattend_students', $rec);
		unset($rec);
	}

	if ($result and $called=='M') {
		$loginfo = MANUAL_SUBMIT_LOG."=$attsid,$userid,{$prvstatus[$att]},{$status[$att]}";
		add_to_log($course->id, 'autoattend', 'submit manualattend', 'index.php?course='.$course->id, $loginfo);
	}
}


// 出席表の書き込み
global $TIME_OFFSET;

$sess = get_record('autoattend_sessions', 'id', $attsid);
if ($sess->timetaken==0)  $rec->timetaken    = time();
else 					  $rec->timemodified = time();

$prvstate = $sess->state;
if ($prvstate!='C') { 		// 一度完了したものは変更しない
	$etime = $sess->sessdate + $sess->endtime - $TIME_OFFSET;
	$ntime = time();
	if ($etime<=$ntime) $state = 'C';
	else 			  	$state = 'O';
}
else {
	$state = 'C';
}

$rec->state   = $state;
$rec->id	  = $attsid;
$rec->takenby = $teacher;
$result = update_record('autoattend_sessions', $rec);

if ($result) {
	$dsptm = 1;
	$mssg = get_string('attendsuccess', 'block_autoattend');
	$loginfo = "=$attsid,$prvstate,$state";
	add_to_log($course->id, 'autoattend', 'submit sessions', 'index.php?course='.$course->id, $loginfo);
}
else {
	$dsptm = 5;
	$mssg = get_string('attenderror', 'block_autoattend');
}

redirect($fromform.'.php?course='.$course->id.'&amp;attsid='.$attsid.'&amp;userid='.$userid, $mssg, $dsptm);

?>