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<?PHP // $Id: report.php,v 1.16.2.2 2004/12/08 13:45:54 moodler Exp $
/// This page prints reports and info about chats
require_once("../../config.php");
require_once("lib.php");
require_variable($id); // Course module ID
optional_variable($groupid, ""); // Group
optional_variable($start, ""); // Start of period
optional_variable($end, ""); // End of period
optional_variable($deletesession, ""); // Delete a session
optional_variable($confirmdelete, ""); // End of period
if (! $cm = get_record("course_modules", "id", $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);
$isteacher = isteacher($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");
$strdeletesession = get_string("deletesession", "chat");
/// Print a session if once has been specified
if ($start and $end and !$confirmdelete) { // Show a full transcript
if (!empty($groupid)) {
$groupselect = " AND groupid = '$currentgroup'";
$groupparam = "&groupid=$currentgroup";
} else {
$groupselect = "";
$groupparam = "";
}
print_header_simple("$chat->name: $strchatreport", "",
"<a href=\"index.php?id=$course->id\">$strchats</a> ->
<a href=\"view.php?id=$cm->id\">$chat->name</a> ->
<a href=\"report.php?id=$cm->id\">$strchatreport</a>",
"", "", true, "", navmenu($course, $cm));
if ($deletesession and $isteacheredit) {
notice_yesno(get_string("deletesessionsure", "chat"),
"report.php?id=$cm->id&deletesession=1&confirmdelete=1&start=$start&end=$end$groupparam",
"report.php?id=$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);
echo $formatmessage->html;
}
print_simple_box_end("center");
}
if (!$deletesession or !$isteacheredit) {
print_continue("report.php?id=$cm->id");
}
print_footer($course);
exit;
}
/// Print the Sessions display
print_header_simple("$chat->name: $strchatreport", "",
"<a href=\"index.php?id=$course->id\">$strchats</a> ->
<a href=\"view.php?id=$cm->id\">$chat->name</a> -> $strchatreport",
"", "", true, "", navmenu($course, $cm));
print_heading($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'";
$groupparam = "&groupid=$currentgroup";
} else {
$groupselect = "";
$groupparam = "";
}
/// Delete a session if one has been specified
if ($deletesession and $isteacheredit and $confirmdelete and $start and $end) {
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=$sessionend$groupparam\">$strseesession</a>";
if ($isteacheredit) {
echo "<br /><a href=\"report.php?id=$cm->id&start=$sessionstart&end=$sessionend&deletesession=1$groupparam\">$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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