time);
echo "
A data snapshot exists for the $s->dur days prior to $end.
";
show_button(
"bolt_map.php?action=map&course_id=$course_id",
"Use this snapshot",
"Use this snapshot"
);
} else {
echo "There is currently no snapshot.";
}
echo "
";
page_tail();
}
function snap_action() {
global $course_id;
global $top_unit;
$dur = get_int('dur');
$s = write_map_snapshot($course_id, $dur);
show_map();
}
function show_unit($snap, $unit) {
$class = get_class($unit);
echo " $unit->name ($class); ";
if ($unit->is_item) {
if (array_key_exists($unit->name, $snap->views)) {
$n = count($snap->views[$unit->name]);
} else {
$n = 0;
}
echo "$n views";
}
if ($class == "BoltExercise") {
if (array_key_exists($unit->name, $snap->results)) {
$rs = $snap->results[$unit->name];
$sum = 0;
$n = count($rs);
foreach ($rs as $r) {
$sum += $r->score;
}
$avg = $sum/$n;
echo " avg score: $avg ($n)";
}
}
if ($class == "BoltExerciseSet") {
if (array_key_exists($unit->name, $snap->xset_results)) {
$xrs = $snap->xset_results[$unit->name];
$sum = 0;
$n = count($xrs);
foreach ($xrs as $xr) {
$sum += $xr->score;
}
$avg = $sum/$n;
echo " avg score: $avg ($n)";
}
}
echo "\n";
}
function show_unit_recurse($snap, $unit) {
show_unit($snap, $unit);
if ($unit->is_item) return;
foreach ($unit->units as $u) {
echo "\n";
show_unit_recurse($snap, $u);
echo "
\n";
}
}
function show_map() {
global $course_id;
global $top_unit;
page_head("Course map");
$snap = read_map_snapshot($course_id);
show_unit_recurse($snap, $top_unit);
page_tail();
}
$course_id = get_int('course_id');
$course = BoltCourse::lookup_id($course_id);
if (!$course) error_page("no course");
$top_unit = require_once("../user/$course->doc_file");
$action = get_str('action', true);
switch ($action) {
case "":
show_snap_form();
break;
case "snap_action":
snap_action();
break;
case "map":
show_map();
break;
default:
error_page("Unknown action $action");
}
?>