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<?php // $Id: report.php,v 1.25.2.1 2006/08/10 15:31:02 skodak Exp $
/// This page prints reports and info about chats
require_once('../../config.php');
require_once('lib.php');
$id = required_param('id', PARAM_INT);
$start = optional_param('start', 0, PARAM_INT); // Start of period
$end = optional_param('end', 0, PARAM_INT); // End of period
$deletesession = optional_param('deletesession', 0, PARAM_BOOL);
$confirmdelete = optional_param('confirmdelete', 0, PARAM_BOOL);
if (! $cm = get_coursemodule_from_id('chat', $id)) {
error('Course Module ID was incorrect');
}
if (! $chat = get_record('chat', 'id', $cm->instance)) {
error('Course module is incorrect');
}
if (! $course = get_record('course', 'id', $chat->course)) {
error('Course is misconfigured');
}
require_login($course->id, false, $cm);
$isteacher = isteacher($course->id);
$isteacheredit = isteacheredit($course->id);
if (isguest() or (!$isteacher and !$chat->studentlogs)) {
error('You can not view these chat reports');
}
add_to_log($course->id, 'chat', 'report', "report.php?id=$cm->id", $chat->id, $cm->id);
$strchats = get_string('modulenameplural', 'chat');
$strchat = get_string('modulename', 'chat');
$strchatreport = get_string('chatreport', 'chat');
$strseesession = get_string('seesession', 'chat');
$strdeletesession = get_string('deletesession', 'chat');
/// Print a session if one has been specified
if ($start and $end and !$confirmdelete) { // Show a full transcript
print_header_simple(format_string($chat->name).": $strchatreport", '',
"<a href=\"index.php?id=$course->id\">$strchats</a> ->
<a href=\"view.php?id=$cm->id\">".format_string($chat->name,true)."</a> ->
<a href=\"report.php?id=$cm->id\">$strchatreport</a>",
'', '', true, '', navmenu($course, $cm));
/// Check to see if groups are being used here
if ($groupmode = groupmode($course, $cm)) { // Groups are being used
$currentgroup = setup_and_print_groups($course, $groupmode, "report.php?id=$cm->id");
} else {
$currentgroup = false;
}
if (!empty($currentgroup)) {
$groupselect = " AND groupid = '$currentgroup'";
} else {
$groupselect = "";
}
if ($deletesession and $isteacheredit) {
notice_yesno(get_string('deletesessionsure', 'chat'),
"report.php?id=$cm->id&deletesession=1&confirmdelete=1&start=$start&end=$end&sesskey=$USER->sesskey",
"report.php?id=$cm->id");
}
if (!$messages = get_records_select('chat_messages', "chatid = $chat->id AND
timestamp >= '$start' AND
timestamp <= '$end' $groupselect", "timestamp ASC")) {
print_heading(get_string('nomessages', 'chat'));
} else {
echo '<p align="center">'.userdate($start).' --> '. userdate($end).'</p>';
print_simple_box_start('center');
foreach ($messages as $message) { // We are walking FORWARDS through messages
$formatmessage = chat_format_message($message, $course->id, $USER);
if (isset($formatmessage->html)) {
echo $formatmessage->html;
}
}
print_simple_box_end('center');
}
if (!$deletesession or !$isteacheredit) {
print_continue("report.php?id=$cm->id");
}
print_footer($course);
exit;
}
/// Print the Sessions display
print_header_simple(format_string($chat->name).": $strchatreport", '',
"<a href=\"index.php?id=$course->id\">$strchats</a> ->
<a href=\"view.php?id=$cm->id\">".format_string($chat->name,true)."</a> -> $strchatreport",
'', '', true, '', navmenu($course, $cm));
print_heading(format_string($chat->name).': '.get_string('sessions', 'chat'));
/// Check to see if groups are being used here
if ($groupmode = groupmode($course, $cm)) { // Groups are being used
$currentgroup = setup_and_print_groups($course, $groupmode, "report.php?id=$cm->id");
} else {
$currentgroup = false;
}
if (!empty($currentgroup)) {
$groupselect = " AND groupid = '$currentgroup'";
} else {
$groupselect = "";
}
/// Delete a session if one has been specified
if ($deletesession and $isteacheredit and $confirmdelete and $start and $end and confirm_sesskey()) {
delete_records_select('chat_messages', "chatid = $chat->id AND
timestamp >= '$start' AND
timestamp <= '$end' $groupselect");
$strdeleted = get_string('deleted');
notify("$strdeleted: ".userdate($start).' --> '. userdate($end));
unset($deletesession);
}
/// Get the messages
if (empty($messages)) { /// May have already got them above
if (!$messages = get_records_select('chat_messages', "chatid = '$chat->id' $groupselect", "timestamp DESC")) {
print_heading(get_string('nomessages', 'chat'));
print_footer($course);
exit;
}
}
/// Show all the sessions
$sessiongap = 5 * 60; // 5 minutes silence means a new session
$sessionend = 0;
$sessionstart = 0;
$sessionusers = array();
$lasttime = 0;
$messagesleft = count($messages);
foreach ($messages as $message) { // We are walking BACKWARDS through the messages
$messagesleft --; // Countdown
if (!$lasttime) {
$lasttime = $message->timestamp;
}
if (!$sessionend) {
$sessionend = $message->timestamp;
}
if ((($lasttime - $message->timestamp) < $sessiongap) and $messagesleft) { // Same session
if ($message->userid and !$message->system) { // Remember user and count messages
if (empty($sessionusers[$message->userid])) {
$sessionusers[$message->userid] = 1;
} else {
$sessionusers[$message->userid] ++;
}
}
} else {
$sessionstart = $lasttime;
if ($sessionend - $sessionstart > 60 and count($sessionusers) > 1) {
echo '<p align="center">'.userdate($sessionstart).' --> '. userdate($sessionend).'</p>';
print_simple_box_start('center');
arsort($sessionusers);
foreach ($sessionusers as $sessionuser => $usermessagecount) {
if ($user = get_record('user', 'id', $sessionuser)) {
print_user_picture($user->id, $course->id, $user->picture);
echo ' '.fullname($user, $isteacher);
echo " ($usermessagecount)<br />";
}
}
echo '<p align="right">';
echo "<a href=\"report.php?id=$cm->id&start=$sessionstart&end=$sessionend\">$strseesession</a>";
if ($isteacheredit) {
echo "<br /><a href=\"report.php?id=$cm->id&start=$sessionstart&end=$sessionend&deletesession=1\">$strdeletesession</a>";
}
echo '</p>';
print_simple_box_end();
}
$sessionend = $message->timestamp;
$sessionusers = array();
$sessionusers[$message->userid] = 1;
}
$lasttime = $message->timestamp;
}
/// Finish the page
print_footer($course);
?>
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