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<? // $Id$
$MAXNEWSDISPLAY = 4;
$FORMATS = array (
"1" => "Weekly layout",
"2" => "Social layout"
);
function print_log_selector_form($course, $selecteduser=0, $selecteddate="today") {
global $USER, $CFG;
// Get all the possible users
$users = array();
if ($students = get_records_sql("SELECT u.* FROM user u, user_students s
WHERE s.course = '$course->id' AND s.user = u.id
ORDER BY u.lastaccess DESC")) {
foreach ($students as $student) {
$users["$student->id"] = "$student->firstname $student->lastname";
}
}
if ($teachers = get_records_sql("SELECT u.* FROM user u, user_teachers t
WHERE t.course = '$course->id' AND t.user = u.id
ORDER BY u.lastaccess DESC")) {
foreach ($teachers as $teacher) {
$users["$teacher->id"] = "$teacher->firstname $teacher->lastname";
}
}
asort($users);
// Get all the possible dates
// Note that we are keeping track of real (GMT) time and user time
// User time is only used in displays - all calcs and passing is GMT
$timenow = time(); // GMT
// What day is it now for the user, and when is midnight that day (in GMT).
$timemidnight = usergetmidnight($timenow);
// Put today up the top of the list
$dates = array("$timemidnight" => "Today, ".userdate($timenow, "j F Y") );
if (! $course->startdate) {
$course->startdate = $course->timecreated;
}
$numdates = 1;
while ($timemidnight > $course->startdate and $numdates < 365) {
$timemidnight = $timemidnight - 86400;
$timenow = $timenow - 86400;
$dates["$timemidnight"] = userdate($timenow, "l, j F Y");
$numdates++;
}
if ($selecteddate == "today") {
$selecteddate = $today;
}
echo "<CENTER>";
echo "<FORM ACTION=log.php METHOD=get>";
echo "<INPUT TYPE=hidden NAME=id VALUE=\"$course->id\">";
choose_from_menu ($users, "user", $selecteduser, "All participants");
choose_from_menu ($dates, "date", $selecteddate, "Any day");
echo "<INPUT TYPE=submit VALUE=\"Show these logs\">";
echo "</FORM>";
echo "</CENTER>";
}
function make_log_url($module, $url) {
switch ($module) {
case "course":
case "user":
case "file":
case "login":
case "lib":
case "admin":
return "/$module/$url";
break;
default:
return "/mod/$module/$url";
break;
}
}
function print_log($course, $user=0, $date=0, $order="ORDER BY l.time ASC") {
// It is assumed that $date is the GMT time of midnight for that day,
// and so the next 86400 seconds worth of logs are printed.
$selector = "WHERE l.course='$course->id' AND l.user = u.id";
if ($user) {
$selector .= " AND l.user = '$user'";
}
if ($date) {
$enddate = $date + 86400;
$selector .= " AND l.time > '$date' AND l.time < '$enddate'";
}
if (!$logs = get_records_sql("SELECT l.*, u.firstname, u.lastname, u.picture
FROM log l, user u $selector $order")){
notify("No logs found!");
print_footer($course);
exit;
}
$count=0;
$tt = getdate(time());
$today = mktime (0, 0, 0, $tt["mon"], $tt["mday"], $tt["year"]);
echo "<P ALIGN=CENTER>Displaying ".count($logs)." records</P>";
echo "<TABLE BORDER=0 ALIGN=center CELLPADDING=3 CELLSPACING=3>";
foreach ($logs as $log) {
if ($ld = get_record_sql("SELECT * FROM log_display WHERE module='$log->module' AND action='$log->action'")) {
$log->info = get_field($ld->table, $ld->field, "id", $log->info);
}
echo "<TR>";
echo "<TD ALIGN=right><FONT SIZE=2>".userdate($log->time, "l")."</TD>";
echo "<TD><FONT SIZE=2>".userdate($log->time, "j M Y, h:i A")."</TD>";
echo "<TD><FONT SIZE=2><A TITLE=\"$log->ip\" HREF=\"../user/view.php?id=$log->user&course=$log->course\"><B>$log->firstname $log->lastname</B></TD>";
echo "<TD><FONT SIZE=2>";
link_to_popup_window( make_log_url($log->module,$log->url), "fromloglive","$log->module $log->action", 400, 600);
echo "</TD>";
echo "<TD><FONT SIZE=2>$log->info</TD>";
echo "</TR>";
}
echo "</TABLE>";
}
function print_all_courses($cat=1) {
if ($courses = get_records("course", "category", $cat, "fullname ASC")) {
foreach ($courses as $course) {
print_course($course);
echo "<BR>\n";
}
} else {
echo "<H3>No courses have been defined yet</H3>";
}
}
function print_course($course) {
global $CFG;
if (! $site = get_record("course", "category", "0") ) {
error("Could not find a site!");
}
print_simple_box_start("CENTER", "100%");
echo "<TABLE WIDTH=100%>";
echo "<TR VALIGN=top>";
echo "<TD VALIGN=top WIDTH=50%>";
echo "<P><FONT SIZE=3><B><A TITLE=\"Click to enter this course\"
HREF=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->fullname</A></B></FONT></P>";
if ($teachers = get_records_sql("SELECT u.* FROM user u, user_teachers t
WHERE u.id = t.user AND t.course = '$course->id'
ORDER BY t.authority ASC")) {
echo "<P><FONT SIZE=1>\n";
foreach ($teachers as $teacher) {
echo "$course->teacher: <A HREF=\"$CFG->wwwroot/user/view.php?id=$teacher->id&course=$site->id\">$teacher->firstname $teacher->lastname</A><BR>";
}
echo "</FONT></P>";
}
if ($course->guest or ($course->password == "")) {
echo "<A TITLE=\"This course allows guest users\" HREF=\"$CFG->wwwroot/course/view.php?id=$course->id\">";
echo "<IMG VSPACE=4 ALT=\"\" HEIGHT=16 WIDTH=16 BORDER=0 SRC=\"$CFG->wwwroot/user/user.gif\"></A>&nbsp;&nbsp;";
}
if ($course->password) {
echo "<A TITLE=\"This course requires an enrolment key\" HREF=\"$CFG->wwwroot/course/view.php?id=$course->id\">";
echo "<IMG VSPACE=4 ALT=\"\" HEIGHT=16 WIDTH=16 BORDER=0 SRC=\"$CFG->wwwroot/pix/i/key.gif\"></A>";
}
echo "</TD><TD VALIGN=top WIDTH=50%>";
echo "<P><FONT SIZE=2>".text_to_html($course->summary)."</FONT></P>";
echo "</TD></TR>";
echo "</TABLE>";
print_simple_box_end();
}
function print_headline($text, $size=2) {
echo "<B><FONT SIZE=\"$size\">$text</FONT></B><BR>\n";
}
function print_recent_activity($course) {
// $course is an object
// This function trawls through the logs looking for
// anything new since the user's last login
global $CFG, $USER;
if (! $USER->lastlogin ) {
echo "<P>Welcome to the course! Here you will find a list of what's new since your last login.</P>";
return;
}
if (! $logs = get_records_sql("SELECT * FROM log WHERE time > '$USER->lastlogin' AND course = '$course->id' ORDER BY time ASC")) {
return;
}
// Firstly, have there been any new enrolments?
$heading = false;
$content = false;
foreach ($logs as $log) {
if ($log->module == "course" and $log->action == "enrol") {
if (! $heading) {
print_headline("New users:");
$heading = true;
$content = true;
}
$user = get_record("user", "id", $log->info);
echo "<P><FONT SIZE=1><A HREF=\"../user/view.php?id=$user->id&course=$course->id\">$user->firstname $user->lastname</A></FONT></P>";
}
}
// Next, have there been any changes to the course structure?
foreach ($logs as $log) {
if ($log->module == "course") {
if ($log->action == "add mod" or $log->action == "update mod" or $log->action == "delete mod") {
$info = split(" ", $log->info);
$modname = get_field($info[0], "name", "id", $info[1]);
if ($info[0] == "discuss") {
$info[0] = "discussion"; // nasty hack, really.
}
switch ($log->action) {
case "add mod":
$changelist["$log->info"] = array ("operation" => "add", "text" => "Added a ".$info[0].":<BR><A HREF=\"$CFG->wwwroot/course/$log->url\">$modname</A>");
break;
case "update mod":
if (! $changelist["$log->info"]) {
$changelist["$log->info"] = array ("operation" => "update", "text" => "Updated the ".$info[0].":<BR><A HREF=\"$CFG->wwwroot/course/$log->url\">$modname</A>");
}
break;
case "delete mod":
if ($changelist["$log->info"]["operation"] == "add") {
$changelist["$log->info"] = NULL;
} else {
$changelist["$log->info"] = array ("operation" => "delete", "text" => "Deleted a ".$info[0]);
}
break;
}
}
}
}
if ($changelist) {
foreach ($changelist as $changeinfo => $change) {
if ($change) {
$changes[$changeinfo] = $change;
}
}
if (count($changes) > 0) {
print_headline("Course changes:");
$content = true;
foreach ($changes as $changeinfo => $change) {
echo "<P><FONT SIZE=1>".$change["text"]."</FONT></P>";
}
}
}
// Now all we need to know are the new posts.
$heading = false;
foreach ($logs as $log) {
if ($log->module == "discuss") {
$post = NULL;
if ($log->action == "add post") {
$post = get_record_sql("SELECT p.*, u.firstname, u.lastname,
u.email, u.picture, u.id as userid
FROM discuss_posts p, user u
WHERE p.id = '$log->info' AND p.user = u.id");
} else if ($log->action == "add") {
$post = get_record_sql("SELECT p.*, u.firstname, u.lastname,
u.email, u.picture, u.id as userid
FROM discuss d, discuss_posts p, user u
WHERE d.id = '$log->info' AND d.firstpost = p.id AND p.user = u.id");
}
if ($post) {
if (! $heading) {
print_headline("Discussion Posts:");
$heading = true;
$content = true;
}
echo "<P><FONT SIZE=1>$post->firstname $post->lastname:<BR>";
echo "\"<A HREF=\"$CFG->wwwroot/mod/discuss/$log->url\">";
if ($log->action == "add") {
echo "<B>$post->subject</B>";
} else {
echo "$post->subject";
}
echo "</A>\"</FONT></P>";
}
}
}
if (! $content) {
echo "<FONT SIZE=2>Nothing new since your last login</FONT>";
}
}
function unenrol_student_in_course($user, $course) {
global $db;
return $db->Execute("DELETE FROM user_students WHERE user = '$user' AND course = '$course'");
}
function enrol_student_in_course($user, $course) {
global $db;
$timenow = time();
$rs = $db->Execute("INSERT INTO user_students (user, course, start, end, time)
VALUES ($user, $course, 0, 0, $timenow)");
if ($rs) {
return true;
} else {
return false;
}
}
?>
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