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<?PHP // $Id$
require_once("$CFG->dirroot/files/mimetypes.php");
define("OFFLINE", "0");
define("UPLOADSINGLE", "1");
$ASSIGNMENT_TYPE = array (OFFLINE => get_string("typeoffline", "assignment"),
UPLOADSINGLE => get_string("typeuploadsingle", "assignment") );
function assignment_add_instance($assignment) {
// Given an object containing all the necessary data,
// (defined by the form in mod.html) this function
// will create a new instance and return the id number
// of the new instance.
$assignment->timemodified = time();
$assignment->timedue = make_timestamp($assignment->dueyear, $assignment->duemonth, $assignment->dueday,
$assignment->duehour, $assignment->dueminute);
return insert_record("assignment", $assignment);
}
function assignment_update_instance($assignment) {
// Given an object containing all the necessary data,
// (defined by the form in mod.html) this function
// will update an existing instance with new data.
$assignment->timemodified = time();
$assignment->timedue = make_timestamp($assignment->dueyear, $assignment->duemonth, $assignment->dueday,
$assignment->duehour, $assignment->dueminute);
$assignment->id = $assignment->instance;
return update_record("assignment", $assignment);
}
function assignment_delete_instance($id) {
// Given an ID of an instance of this module,
// this function will permanently delete the instance
// and any data that depends on it.
if (! $assignment = get_record("assignment", "id", "$id")) {
return false;
}
$result = true;
if (! delete_records("assignment_submissions", "assignment", "$assignment->id")) {
$result = false;
}
if (! delete_records("assignment", "id", "$assignment->id")) {
$result = false;
}
return $result;
}
function assignment_user_outline($course, $user, $mod, $assignment) {
if ($submission = assignment_get_submission($assignment, $user)) {
if ($submission->grade) {
$result->info = get_string("grade").": $submission->grade";
}
$result->time = $submission->timemodified;
return $result;
}
return NULL;
}
function assignment_user_complete($course, $user, $mod, $assignment) {
if ($submission = assignment_get_submission($assignment, $user)) {
if ($basedir = assignment_file_area($assignment, $user)) {
if ($files = get_directory_list($basedir)) {
$countfiles = count($files)." ".get_string("uploadedfiles", "assignment");
foreach ($files as $file) {
$countfiles .= "; $file";
}
}
}
print_simple_box_start();
echo "<P><FONT SIZE=1>";
echo get_string("lastmodified").": ";
echo userdate($submission->timemodified);
echo assignment_print_difference($assignment->timedue - $submission->timemodified);
echo "</FONT></P>";
assignment_print_user_files($assignment, $user);
echo "<BR>";
assignment_print_feedback($course, $submission);
print_simple_box_end();
} else {
print_string("notsubmittedyet", "assignment");
}
}
function assignment_cron () {
// Function to be run periodically according to the moodle cron
// Finds all assignment notifications that have yet to be mailed out, and mails them
global $CFG, $USER;
$cutofftime = time() - $CFG->maxeditingtime;
if ($submissions = assignment_get_unmailed_submissions($cutofftime)) {
$timenow = time();
foreach ($submissions as $submission) {
echo "Processing assignment submission $submission->id\n";
if (! $user = get_record("user", "id", "$submission->userid")) {
echo "Could not find user $post->userid\n";
continue;
}
$USER->lang = $user->lang;
if (! $course = get_record("course", "id", "$submission->course")) {
echo "Could not find course $submission->course\n";
continue;
}
if (! isstudent($course->id, $user->id) and !isteacher($course->id, $user->id)) {
echo "$user->firstname $user->lastname not an active participant in $course->shortname\n";
continue;
}
if (! $teacher = get_record("user", "id", "$submission->teacher")) {
echo "Could not find teacher $submission->teacher\n";
continue;
}
if (! $mod = get_coursemodule_from_instance("assignment", $submission->assignment, $course->id)) {
echo "Could not find course module for assignment id $submission->assignment\n";
continue;
}
$strassignments = get_string("modulenameplural", "assignment");
$strassignment = get_string("modulename", "assignment");
$postsubject = "$course->shortname: $strassignments: $submission->name";
$posttext = "$course->shortname -> $strassignments -> $submission->name\n";
$posttext .= "---------------------------------------------------------------------\n";
$posttext .= "$teacher->firstname $teacher->lastname has posted some feedback on your\n";
$posttext .= "assignment submission for '$submission->name'\n\n";
$posttext .= "You can see it appended to your assignment submission:\n";
$posttext .= " $CFG->wwwroot/mod/assignment/view.php?id=$mod->id\n";
$posttext .= "---------------------------------------------------------------------\n";
if ($user->mailformat == 1) { // HTML
$posthtml = "<P><FONT FACE=sans-serif>".
"<A HREF=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</A> ->".
"<A HREF=\"$CFG->wwwroot/mod/assignment/index.php?id=$course->id\">$strassignments</A> ->".
"<A HREF=\"$CFG->wwwroot/mod/assignment/view.php?id=$mod->id\">$submission->name</A></FONT></P>";
$posthtml .= "<HR><FONT FACE=sans-serif>";
$posthtml .= "<P>$teacher->firstname $teacher->lastname has posted some feedback on your";
$posthtml .= " assignment submission for '<B>$submission->name</B>'</P>";
$posthtml .= "<P>You can see it <A HREF=\"$CFG->wwwroot/mod/assignment/view.php?id=$mod->id\">";
$posthtml .= "appended to your assignment submission</A>.</P></FONT><HR>";
} else {
$posthtml = "";
}
if (! email_to_user($user, $teacher, $postsubject, $posttext, $posthtml)) {
echo "Error: assignment cron: Could not send out mail for id $submission->id to user $user->id ($user->email)\n";
}
if (! set_field("assignment_submissions", "mailed", "1", "id", "$submission->id")) {
echo "Could not update the mailed field for id $submission->id\n";
}
}
}
return true;
}
function assignment_print_recent_activity(&$logs, $isteacher=false) {
global $CFG, $COURSE_TEACHER_COLOR;
$content = false;
$assignments = NULL;
foreach ($logs as $log) {
if ($log->module == "assignment" and $log->action == "upload") {
$assignments[$log->info] = assignment_log_info($log);
$assignments[$log->info]->time = $log->time;
$assignments[$log->info]->url = $log->url;
}
}
if ($assignments) {
$strftimerecent = get_string("strftimerecent");
$content = true;
print_headline(get_string("newsubmissions", "assignment").":");
foreach ($assignments as $assignment) {
$date = userdate($assignment->time, $strftimerecent);
echo "<P><FONT SIZE=1>$date - $assignment->firstname $assignment->lastname<BR>";
echo "\"<A HREF=\"$CFG->wwwroot/mod/assignment/$assignment->url\">";
echo "$assignment->name";
echo "</A>\"</FONT></P>";
}
}
return $content;
}
function assignment_grades($assignmentid) {
/// Must return an array of grades, indexed by user, and a max grade.
$return->grades = get_records_menu("assignment_submissions", "assignment",
$assignmentid, "", "userid,grade");
$return->maxgrade = get_field("assignment", "grade", "id", "$assignmentid");
return $return;
}
/// SQL STATEMENTS //////////////////////////////////////////////////////////////////
function assignment_log_info($log) {
global $CFG;
return get_record_sql("SELECT a.name, u.firstname, u.lastname
FROM {$CFG->prefix}assignment a,
{$CFG->prefix}user u
WHERE a.id = '$log->info'
AND u.id = '$log->userid'");
}
function assignment_get_all_submissions($assignment) {
/// Return all assignment submissions by ENROLLED students
global $CFG;
return get_records_sql("SELECT a.*
FROM {$CFG->prefix}assignment_submissions a,
{$CFG->prefix}user_students s
WHERE a.userid = s.userid
AND s.course = '$assignment->course'
AND a.assignment = '$assignment->id'
ORDER BY a.timemodified DESC");
}
function assignment_get_users_done($assignment) {
/// Return list of users who have done an assignment
global $CFG;
return get_records_sql("SELECT u.*
FROM {$CFG->prefix}user u,
{$CFG->prefix}user_students s,
{$CFG->prefix}assignment_submissions a
WHERE s.course = '$assignment->course'
AND s.userid = u.id
AND u.id = a.userid
AND a.assignment = '$assignment->id'
ORDER BY a.timemodified DESC");
}
function assignment_get_unmailed_submissions($cutofftime) {
/// Return list of marked submissions that have not been mailed out for currently enrolled students
global $CFG;
return get_records_sql("SELECT s.*, a.course, a.name
FROM {$CFG->prefix}assignment_submissions s,
{$CFG->prefix}assignment a,
{$CFG->prefix}user_students us
WHERE s.mailed = 0
AND s.timemarked < $cutofftime
AND s.timemarked > 0
AND s.assignment = a.id
AND s.userid = us.userid
AND a.course = us.course");
}
//////////////////////////////////////////////////////////////////////////////////////
function assignment_file_area_name($assignment, $user) {
// Creates a directory file name, suitable for make_upload_directory()
global $CFG;
return "$assignment->course/$CFG->moddata/assignment/$assignment->id/$user->id";
}
function assignment_file_area($assignment, $user) {
return make_upload_directory( assignment_file_area_name($assignment, $user) );
}
function assignment_get_submission($assignment, $user) {
return get_record("assignment_submissions", "assignment", $assignment->id, "userid", $user->id);
}
function assignment_print_difference($time) {
if ($time < 0) {
$timetext = get_string("late", "assignment", format_time($time));
return " (<FONT COLOR=RED>$timetext</FONT>)";
} else {
$timetext = get_string("early", "assignment", format_time($time));
return " ($timetext)";
}
}
function assignment_print_submission($assignment, $user, $submission, $teachers, $grades) {
global $THEME, $USER;
echo "\n<TABLE BORDER=1 CELLSPACING=0 valign=top cellpadding=10 align=center>";
echo "\n<TR>";
if ($assignment->type == OFFLINE) {
echo "\n<TD BGCOLOR=\"$THEME->body\" WIDTH=35 VALIGN=TOP>";
} else {
echo "\n<TD ROWSPAN=2 BGCOLOR=\"$THEME->body\" WIDTH=35 VALIGN=TOP>";
}
print_user_picture($user->id, $assignment->course, $user->picture);
echo "</TD>";
echo "<TD NOWRAP BGCOLOR=\"$THEME->cellheading\">$user->firstname $user->lastname";
if ($submission->timemodified) {
echo "&nbsp;&nbsp;<FONT SIZE=1>".get_string("lastmodified").": ";
echo userdate($submission->timemodified);
echo assignment_print_difference($assignment->timedue - $submission->timemodified);
echo "</FONT>";
}
echo "</TR>";
if ($assignment->type != OFFLINE) {
echo "\n<TR><TD BGCOLOR=\"$THEME->cellcontent\">";
if ($submission->timemodified) {
assignment_print_user_files($assignment, $user);
} else {
print_string("notsubmittedyet", "assignment");
}
echo "</TD></TR>";
}
echo "\n<TR>";
echo "<TD WIDTH=35 VALIGN=TOP>";
if (!$submission->teacher) {
$submission->teacher = $USER->id;
}
print_user_picture($submission->teacher, $assignment->course, $teachers[$submission->teacher]->picture);
if ($submission->timemodified > $submission->timemarked) {
echo "<TD BGCOLOR=\"$THEME->cellheading2\">";
} else {
echo "<TD BGCOLOR=\"$THEME->cellheading\">";
}
echo get_string("feedback", "assignment").":";
choose_from_menu($grades, "g$submission->id", $submission->grade, get_string("grade")."...");
if ($submission->timemarked) {
echo "&nbsp;&nbsp;<FONT SIZE=1>".userdate($submission->timemarked)."</FONT>";
}
echo "<BR><TEXTAREA NAME=\"c$submission->id\" ROWS=6 COLS=60 WRAP=virtual>";
p($submission->comment);
echo "</TEXTAREA><BR>";
echo "</TD></TR>";
echo "</TABLE><BR CLEAR=ALL>\n";
}
function assignment_print_feedback($course, $submission) {
global $CFG, $THEME, $RATING;
if (! $teacher = get_record("user", "id", $submission->teacher)) {
error("Weird assignment error");
}
echo "\n<TABLE BORDER=0 CELLPADDING=1 CELLSPACING=1 ALIGN=CENTER><TR><TD BGCOLOR=#888888>";
echo "\n<TABLE BORDER=0 CELLPADDING=3 CELLSPACING=0 VALIGN=TOP>";
echo "\n<TR>";
echo "\n<TD ROWSPAN=3 BGCOLOR=\"$THEME->body\" WIDTH=35 VALIGN=TOP>";
print_user_picture($teacher->id, $course->id, $teacher->picture);
echo "</TD>";
echo "<TD NOWRAP WIDTH=100% BGCOLOR=\"$THEME->cellheading\">$teacher->firstname $teacher->lastname";
echo "&nbsp;&nbsp;<FONT SIZE=2><I>".userdate($submission->timemarked)."</I>";
echo "</TR>";
echo "\n<TR><TD WIDTH=100% BGCOLOR=\"$THEME->cellcontent\">";
echo "<P ALIGN=RIGHT><FONT SIZE=-1><I>";
if ($submission->grade) {
echo get_string("grade").": $submission->grade";
} else {
echo get_string("nograde");
}
echo "</I></FONT></P>";
echo text_to_html($submission->comment);
echo "</TD></TR></TABLE>";
echo "</TD></TR></TABLE>";
}
function assignment_print_user_files($assignment, $user) {
// Arguments are objects
global $CFG;
$filearea = assignment_file_area_name($assignment, $user);
if ($basedir = assignment_file_area($assignment, $user)) {
if ($files = get_directory_list($basedir)) {
foreach ($files as $file) {
$icon = mimeinfo("icon", $file);
if ($CFG->slasharguments) {
$ffurl = "file.php/$filearea/$file";
} else {
$ffurl = "file.php?file=/$filearea/$file";
}
echo "<IMG SRC=\"$CFG->wwwroot/files/pix/$icon\" HEIGHT=16 WIDTH=16 BORDER=0 ALT=\"File\">";
echo "&nbsp;<A TARGET=\"uploadedfile\" HREF=\"$CFG->wwwroot/$ffurl\">$file</A>";
echo "<BR>";
}
}
}
}
function assignment_delete_user_files($assignment, $user, $exception) {
// Deletes all the user files in the assignment area for a user
// EXCEPT for any file named $exception
if ($basedir = assignment_file_area($assignment, $user)) {
if ($files = get_directory_list($basedir)) {
foreach ($files as $file) {
if ($file != $exception) {
unlink("$basedir/$file");
notify("Existing file '$file' has been deleted!");
}
}
}
}
}
function assignment_print_upload_form($assignment) {
// Arguments are objects
echo "<DIV ALIGN=CENTER>";
echo "<FORM ENCTYPE=\"multipart/form-data\" METHOD=\"POST\" ACTION=upload.php>";
echo " <INPUT TYPE=hidden NAME=MAX_FILE_SIZE value=\"$assignment->maxbytes\">";
echo " <INPUT TYPE=hidden NAME=id VALUE=\"$assignment->id\">";
echo " <INPUT NAME=\"newfile\" TYPE=\"file\" size=\"50\">";
echo " <INPUT TYPE=submit NAME=save VALUE=\"".get_string("uploadthisfile")."\">";
echo "</FORM>";
echo "</DIV>";
}
?>
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