--- loncom/interface/slotrequest.pm 2005/05/31 21:13:01 1.2
+++ loncom/interface/slotrequest.pm 2005/08/09 15:38:13 1.7
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Handler for requesting to have slots added to a students record
#
-# $Id: slotrequest.pm,v 1.2 2005/05/31 21:13:01 albertel Exp $
+# $Id: slotrequest.pm,v 1.7 2005/08/09 15:38:13 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -104,16 +104,88 @@ sub space_available {
}
return 0;
}
-
+
+sub check_for_reservation {
+ my ($symb)=@_;
+ my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
+ $env{'user.domain'}, $env{'user.name'});
+
+ my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
+ $env{'user.domain'}, $env{'user.name'});
+ my @slots = (split(/:/,$student), split(/:/, $course));
+
+ &Apache::lonxml::debug(" slot list is ".join(':',@slots));
+
+ my ($cnum,$cdom)=&get_course();
+ my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
+
+ foreach my $slot_name (@slots) {
+ next if (!defined($slots{$slot_name}) ||
+ !ref($slots{$slot_name}));
+ &Apache::lonxml::debug(time." $slot_name ".
+ $slots{$slot_name}->{'starttime'}." -- ".
+ $slots{$slot_name}->{'startreserve'});
+ if ($slots{$slot_name}->{'endtime'} > time &&
+ $slots{$slot_name}->{'startreserve'} < time) {
+ # between start of reservation times and end of slot
+ return($slot_name, $slots{$slot_name});
+ }
+ }
+ return (undef,undef);
+}
+
+sub check_for_conflict {
+ my ($symb,$new_slot_name)=@_;
+ my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
+ $env{'user.domain'}, $env{'user.name'});
+ my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
+ $env{'user.domain'}, $env{'user.name'});
+ my @slots = (split(/:/,$student), split(/:/, $course));
+ my ($cnum,$cdom)=&get_course();
+ my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
+ foreach my $slot_name (@slots) {
+ next if (!defined($slots{$slot_name}) ||
+ !ref($slots{$slot_name}));
+
+ next if (!defined($slots{$slot_name}->{'uniqueperiod'}) ||
+ !ref($slots{$slot_name}->{'uniqueperiod'}));
+ my ($start,$end)=@{$slots{$slot_name}->{'uniqueperiod'}};
+ if ($start<time && time < $end) {
+ return $slot_name;
+ }
+ }
+ return undef;
+
+}
+
sub make_reservation {
my ($slot_name,$slot,$symb)=@_;
- my $max=$slot->{'maxspace'};
- if (!defined($max)) { return 1; }
+ my ($cnum,$cdom)=&get_course();
+
+ my $value=&Apache::lonnet::EXT("resource.0.availablestudent",$symb,
+ $env{'user.domain'},$env{'user.name'});
+ &Apache::lonxml::debug("value is $value<br />");
+ foreach my $other_slot (split(/:/, $value)) {
+ if ($other_slot eq $slot_name) {
+ my %consumed=&Apache::lonnet::dump('slot_reservations', $cdom,
+ $cnum, "^$slot_name\0");
+
+ my $me=$env{'user.name'}.'@'.$env{'user.domain'};
+ foreach my $key (keys(%consumed)) {
+ if ($consumed{$key}->{'name'} eq $me) {
+ my $num=(split('\0',$key))[1];
+ return -$num;
+ }
+ }
+ }
+ }
+
+ my $max=$slot->{'maxspace'};
+ if (!defined($max)) { $max=99999; }
my (@ids)=&get_reservation_ids($slot_name);
- # FIXME we could end up having holes...
my $last=0;
foreach my $id (@ids) {
my $num=(split('\0',$id))[1];
@@ -121,50 +193,240 @@ sub make_reservation {
}
my $wanted=$last+1;
- if ($wanted >= $max) {
+ &Apache::lonxml::debug("wanted $wanted<br />");
+ if (scalar(@ids) >= $max) {
# full up
- return -1;
+ return undef;
}
my %reservation=('name' => $env{'user.name'}.'@'.$env{'user.domain'},
'timestamp' => time,
'symb' => $symb);
- my ($cnum,$cdom)=&get_course();
my $success=&Apache::lonnet::newput('slot_reservations',
{"$slot_name\0$wanted" =>
\%reservation},
- $cdom,$cnum);
+ $cdom, $cnum);
+
if ($success eq 'ok') {
+ my $new_value=$slot_name;
+ if ($value) {
+ $new_value=$value.':'.$new_value;
+ }
+ my $result=&Apache::lonparmset::storeparm_by_symb($symb,
+ '0_availablestudent',
+ 1, $new_value, 'string',
+ $env{'user.name'},
+ $env{'user.domain'});
+ &Apache::lonxml::debug("hrrm $result");
return $wanted;
}
+
# someone else got it
- return -1;
+ return undef;
+}
+
+sub release_slot {
+ my ($r,$symb,$slot_name,$inhibit_return_link)=@_;
+
+ if ($slot_name eq '') { $slot_name=$env{'form.slotname'}; }
+ my ($cnum,$cdom)=&get_course();
+
+ # get parameter string, check for existance, rebuild string with the slot
+
+ my @slots = split(/:/,&Apache::lonnet::EXT("resource.0.availablestudent",
+ $symb,$env{'user.domain'},
+ $env{'user.name'}));
+ my @new_slots;
+ foreach my $exist_slot (@slots) {
+ if ($exist_slot eq $slot_name) { next; }
+ push(@new_slots,$exist_slot);
+ }
+ my $new_param = join(':',@new_slots);
+
+ # get slot reservations, check if user has one, if so remove reservation
+ my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
+ "^$slot_name\0");
+ foreach my $entry (keys(%consumed)) {
+ if ( $consumed{$entry}->{'name'} eq
+ ($env{'user.name'}.'@'.$env{'user.domain'}) ) {
+ &Apache::lonnet::del('slot_reservations',[$entry],
+ $cdom,$cnum);
+ }
+ }
+ # store new parameter string
+ my $result=&Apache::lonparmset::storeparm_by_symb($symb,
+ '0_availablestudent',
+ 1, $new_param, 'string',
+ $env{'user.name'},
+ $env{'user.domain'});
+ my %slot=&Apache::lonnet::get_slot($slot_name);
+ my $description=&get_description($env{'form.slotname'},\%slot);
+ $r->print("<p>Released Reservation: $description</p>");
+ if (!$inhibit_return_link) {
+ $r->print('<p><a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ }
+ return 1;
}
+sub get_slot {
+ my ($r,$symb)=@_;
+
+ my $slot_name=&check_for_conflict($symb,$env{'form.slotname'});
+ if ($slot_name) {
+ my %slot=&Apache::lonnet::get_slot($slot_name);
+ my $description1=&get_description($slot_name,\%slot);
+ %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
+ my $description2=&get_description($env{'form.slotname'},\%slot);
+ $r->print("<p>Already have a reservation: $description1</p>");
+ if ($slot_name ne $env{'form.slotname'}) {
+ $r->print(<<STUFF);
+<form method="POST" action="/adm/slotrequest">
+ <input type="hidden" name="symb" value="$env{'form.symb'}" />
+ <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
+ <input type="hidden" name="releaseslot" value="$slot_name" />
+ <input type="hidden" name="command" value="change" />
+STUFF
+ $r->print("<p>You can either ");
+ $r->print(<<STUFF);
+ <input type="submit" name="change" value="Change" />
+STUFF
+ $r->print(' your reservation from <b>'.$description1.'</b> to <b>'.
+ $description2.
+ '</b> <br />or <a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ $r->print(<<STUFF);
+</form>
+STUFF
+ } else {
+ $r->print('<p><a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ }
+ return;
+ }
+ my %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
+ my $reserved=&make_reservation($env{'form.slotname'},
+ \%slot,$symb);
+ my $description=&get_description($env{'form.slotname'},\%slot);
+ if (defined($reserved)) {
+ if ($reserved > -1) {
+ $r->print("<p>Success: $description</p>");
+ $r->print('<p><a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ return;
+ } elsif ($reserved < 0) {
+ $r->print("<p>Already reserved: $description</p>");
+ $r->print('<p><a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ return;
+ }
+ }
+
+ my %lt=('request'=>"Availibility list",
+ 'try' =>'Try again');
+ %lt=&Apache::lonlocal::texthash(%lt);
+
+ $r->print(<<STUFF);
+<p> <font color="red">Failed</font> to reserve a spot for $description. </p>
+<p>
+<form method="POST" action="/adm/slotrequest">
+ <input type="submit" name="Try Again" value="$lt{'try'}" />
+ <input type="hidden" name="symb" value="$env{'form.symb'}" />
+ <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
+ <input type="hidden" name="command" value="get" />
+</form>
+?
+</p>
+<p>
+or
+<form method="POST" action="/adm/slotrequest">
+ <input type="hidden" name="symb" value="$env{'form.symb'}" />
+ <input type="submit" name="requestattempt" value="$lt{'request'}" />
+</form>
+</p>
+or
+STUFF
+ $r->print('<p><a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></p>');
+ return;
+}
+
+sub allowed_slot {
+ my ($slot_name,$slot,$symb)=@_;
+ #already started
+ if ($slot->{'starttime'} < time) {
+ # all open slot to be schedulable
+ #return 0;
+ }
+ &Apache::lonxml::debug("$slot_name starttime good");
+ #already ended
+ if ($slot->{'endtime'} < time) {
+ return 0;
+ }
+ &Apache::lonxml::debug("$slot_name endtime good");
+ # not allowed to pick this one
+ if (defined($slot->{'type'})
+ && $slot->{'type'} ne 'schedulable_student') {
+ return 0;
+ }
+ &Apache::lonxml::debug("$slot_name type good");
+ # not allowed for this resource
+ if (defined($slot->{'symb'})
+ && $slot->{'symb'} ne $symb) {
+ return 0;
+ }
+ &Apache::lonxml::debug("$slot_name symb good");
+ return 1;
+}
+
+sub get_description {
+ my ($slot_name,$slot)=@_;
+ my $description=$slot->{'description'};
+ if (!defined($description)) {
+ $description=&mt('[_1] From [_2] to [_3]',$slot_name,
+ &Apache::lonlocal::locallocaltime($slot->{'starttime'}),
+ &Apache::lonlocal::locallocaltime($slot->{'endtime'}));
+ }
+ return $description;
+}
sub show_choices {
my ($r,$symb)=@_;
my ($cnum,$cdom)=&get_course();
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
+ my $available;
$r->print('<table border="1">');
+ &Apache::lonxml::debug("Checking Slots");
+ my ($got_slot)=&check_for_reservation($symb);
foreach my $slot (sort
{ return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'} }
(keys(%slots))) {
- my $description=$slots{$slot}->{'description'};
- if (!defined($description)) {
- $description=&mt('[_1] From [_2] to [_3]',$slot,
- &Apache::lonlocal::locallocaltime($slots{$slot}->{'starttime'}),
- &Apache::lonlocal::locallocaltime($slots{$slot}->{'endtime'}));
- }
+
+ &Apache::lonxml::debug("Checking Slot $slot");
+ next if (!&allowed_slot($slot,$slots{$slot}));
+
+ $available++;
+
+ my $description=&get_description($slot,$slots{$slot});
my $form=&mt('Unavailable');
- if (&space_available($slot,$slots{$slot})) {
+ if (($slot eq $got_slot) ||
+ &space_available($slot,$slots{$slot},$symb)) {
+ my $text=&mt('Select');
+ my $command='get';
+ if ($slot eq $got_slot) {
+ $text=&mt('Free Reservation');
+ $command='release';
+ }
+ my $escsymb=&Apache::lonnet::escape($symb);
$form=<<STUFF;
- <form>
- <input type="submit" name="Select" value="Select" />
- <!-- FIXME needs to send data -->
+ <form method="POST" action="/adm/slotrequest">
+ <input type="submit" name="Select" value="$text" />
+ <input type="hidden" name="symb" value="$escsymb" />
+ <input type="hidden" name="slotname" value="$slot" />
+ <input type="hidden" name="command" value="$command" />
</form>
STUFF
}
@@ -175,6 +437,49 @@ STUFF
</tr>
STUFF
}
+
+ if (!$available) {
+ $r->print('<tr><td>No available times. <a href="/adm/flip?postdata=return:">'.
+ &mt('Return to last resource').'</a></td></tr>');
+ }
+ $r->print('</table>');
+}
+
+sub show_table {
+ my ($r,$symb)=@_;
+
+ my ($cnum,$cdom)=&get_course();
+ my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
+ my $available;
+ $r->print('<table border="1">');
+ foreach my $slot (sort
+ { return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'} }
+ (keys(%slots))) {
+ if (defined($slots{$slot}->{'type'})
+ && $slots{$slot}->{'type'} ne 'schedulable_student') {
+ next;
+ }
+ my $description=&get_description($slot,$slots{$slot});
+ my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
+ "^$slot\0");
+ my $ids;
+ foreach my $entry (sort(keys(%consumed))) {
+ my (undef,$id)=split("\0",$entry);
+ $ids.= $id.'-> '.$consumed{$entry}->{'name'}.'<br />';
+ }
+ my $start=localtime($slots{$slot}->{'starttime'});
+ my $end=localtime($slots{$slot}->{'endtime'});
+ $r->print(<<STUFF);
+<tr>
+ <td>$slot</td>
+ <td>$description</td>
+ <td>$start</td>
+ <td>$end</td>
+ <td>$slots{$slot}->{'maxspace'}</td>
+ <td>$ids</td>
+</tr>
+STUFF
+ }
$r->print('</table>');
}
@@ -188,11 +493,22 @@ sub handler {
&fail($r,'not_valid');
return OK;
}
-
- if ($env{'form.requestattempt'}) {
+
+ if ($env{'form.command'} eq 'showslots') {
+ &show_table($r,$symb);
+ } elsif ($env{'form.requestattempt'}) {
&show_choices($r,$symb);
+ } elsif ($env{'form.command'} eq 'release') {
+ &release_slot($r,$symb);
+ } elsif ($env{'form.command'} eq 'get') {
+ &get_slot($r,$symb);
+ } elsif ($env{'form.command'} eq 'change') {
+ &release_slot($r,$symb,$env{'form.releaseslot'},1);
+ &get_slot($r,$symb);
}
-
&end_page($r);
return OK;
}
+
+1;
+__END__