Annotation of loncom/interface/slotrequest.pm, revision 1.49

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: # Handler for requesting to have slots added to a students record
                      3: #
1.49    ! albertel    4: # $Id: slotrequest.pm,v 1.48 2006/02/26 19:40:14 albertel Exp $
1.1       albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: ###
                     29: 
                     30: package Apache::slotrequest;
                     31: 
                     32: use strict;
                     33: use Apache::Constants qw(:common :http :methods);
                     34: use Apache::loncommon();
                     35: use Apache::lonlocal;
                     36: use Apache::lonnet;
1.48      albertel   37: use Apache::lonnavmaps();
1.27      albertel   38: use Date::Manip;
1.1       albertel   39: 
                     40: sub fail {
                     41:     my ($r,$code)=@_;
1.2       albertel   42:     if ($code eq 'not_valid') {
1.8       albertel   43: 	$r->print('<p>'.&mt('Unable to understand what resource you wanted to sign up for.').'</p>');
1.2       albertel   44: 
1.8       albertel   45:     } elsif ($code eq 'not_allowed') {
                     46: 	$r->print('<p>'.&mt('Not allowed to sign up or change reservations at this time.').'</p>');
                     47:     } else {
                     48: 	$r->print('<p>'.&mt('Failed.').'</p>');
1.2       albertel   49:     }
1.8       albertel   50:     
1.42      albertel   51:     &return_link($r);
1.1       albertel   52:     &end_page($r);
                     53: }
                     54: 
                     55: sub start_page {
1.28      albertel   56:     my ($r,$title)=@_;
1.1       albertel   57:     my $html=&Apache::lonxml::xmlbegin();
1.28      albertel   58:     $r->print($html.'<head><title>'.&mt($title).'</title></head>');
                     59:     $r->print(&Apache::loncommon::bodytag($title));
1.1       albertel   60: }
                     61: 
                     62: sub end_page {
                     63:     my ($r)=@_;
                     64:     $r->print(&Apache::loncommon::endbodytag().'</html>');
                     65: }
                     66: 
1.2       albertel   67: =pod
                     68: 
                     69:  slot_reservations db
                     70:    - keys are 
                     71:     - slotname\0id -> value is an hashref of
                     72:                          name -> user@domain of holder
                     73:                          timestamp -> timestamp of reservation
                     74:                          symb -> symb of resource that it is reserved for
                     75: 
                     76: =cut
                     77: 
                     78: sub get_course {
                     79:     (undef,my $courseid)=&Apache::lonxml::whichuser();
                     80:     my $cdom=$env{'course.'.$courseid.'.domain'};
                     81:     my $cnum=$env{'course.'.$courseid.'.num'};
                     82:     return ($cnum,$cdom);
                     83: }
                     84: 
                     85: sub get_reservation_ids {
                     86:     my ($slot_name)=@_;
                     87:     
                     88:     my ($cnum,$cdom)=&get_course();
                     89: 
                     90:     my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
                     91: 				       "^$slot_name\0");
1.40      albertel   92:     if (&network_error(%consumed)) { 
                     93: 	return 'error: Unable to determine current status';
                     94:     }
1.2       albertel   95:     my ($tmp)=%consumed;
                     96:     if ($tmp=~/^error: 2 / ) {
                     97: 	return 0;
                     98:     }
                     99:     return keys(%consumed);
                    100: }
                    101: 
                    102: sub space_available {
                    103:     my ($slot_name,$slot)=@_;
                    104:     my $max=$slot->{'maxspace'};
                    105: 
                    106:     if (!defined($max)) { return 1; }
                    107: 
                    108:     my $consumed=scalar(&get_reservation_ids($slot_name));
                    109:     if ($consumed < $max) {
                    110: 	return 1
                    111:     }
                    112:     return 0;
                    113: }
1.3       albertel  114: 
1.4       albertel  115: sub check_for_reservation {
1.43      albertel  116:     my ($symb,$mode)=@_;
1.4       albertel  117:     my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
                    118: 				       $env{'user.domain'}, $env{'user.name'});
                    119: 
                    120:     my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
                    121: 				    $env{'user.domain'}, $env{'user.name'});
                    122:     my @slots = (split(/:/,$student), split(/:/, $course));
                    123: 
                    124:     &Apache::lonxml::debug(" slot list is ".join(':',@slots));
                    125: 
                    126:     my ($cnum,$cdom)=&get_course();
                    127:     my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
                    128: 
1.41      albertel  129:     if (&network_error($student) || &network_error($course)  ||
                    130: 	&network_error(%slots)) {
                    131: 	return 'error: Unable to determine current status';
                    132:     }    
1.43      albertel  133:     my @got;
                    134:     foreach my $slot_name (sort {
                    135: 	if (ref($slots{$a}) && ref($slots{$b})) {
                    136: 	    return $slots{$a}{'starttime'} <=> $slots{$b}{'starttime'}
                    137: 	}
                    138: 	if (ref($slots{$a})) { return -1;}
                    139: 	if (ref($slots{$b})) { return 1;}
                    140: 	return 0;
                    141:     } @slots) {
1.4       albertel  142: 	next if (!defined($slots{$slot_name}) ||
                    143: 		 !ref($slots{$slot_name}));
                    144: 	&Apache::lonxml::debug(time." $slot_name ".
                    145: 			       $slots{$slot_name}->{'starttime'}." -- ".
                    146: 			       $slots{$slot_name}->{'startreserve'});
1.7       albertel  147: 	if ($slots{$slot_name}->{'endtime'} > time &&
1.4       albertel  148: 	    $slots{$slot_name}->{'startreserve'} < time) {
1.7       albertel  149: 	    # between start of reservation times and end of slot
1.43      albertel  150: 	    if ($mode eq 'allslots') {
                    151: 		push(@got,$slot_name);
                    152: 	    } else {
                    153: 		return($slot_name, $slots{$slot_name});
                    154: 	    }
1.4       albertel  155: 	}
                    156:     }
1.43      albertel  157:     if ($mode eq 'allslots' && @got) {
                    158: 	return @got;
                    159:     }
1.4       albertel  160:     return (undef,undef);
                    161: }
                    162: 
1.48      albertel  163: sub get_consumed_uniqueperiods {
                    164:     my ($slots) = @_;
                    165:     my $navmap=Apache::lonnavmaps::navmap->new;
                    166:     my @problems = $navmap->retrieveResources(undef,
                    167: 					      sub { $_[0]->is_problem() },1,0);
                    168:     my %used_slots;
                    169:     foreach my $problem (@problems) {
                    170: 	my $symb = $problem->symb();
                    171: 	my $student = &Apache::lonnet::EXT("resource.0.availablestudent",
                    172: 					   $symb, $env{'user.domain'},
                    173: 					   $env{'user.name'});
                    174: 	my $course =  &Apache::lonnet::EXT("resource.0.available",
                    175: 					   $symb, $env{'user.domain'},
                    176: 					   $env{'user.name'});
                    177: 	if (&network_error($student) || &network_error($course)) {
                    178: 	    return 'error: Unable to determine current status';
                    179: 	}
                    180: 	foreach my $slot (split(/:/,$student), split(/:/, $course)) {
                    181: 	    $used_slots{$slot}=1;
                    182: 	}
                    183:     }
1.43      albertel  184: 
                    185:     if (!ref($slots)) {
1.48      albertel  186: 	my ($cnum,$cdom)=&get_course();
                    187: 	my %slots=&Apache::lonnet::get('slots', [keys(%used_slots)], $cdom, $cnum);
                    188: 	if (&network_error(%slots)) {
                    189: 	    return 'error: Unable to determine current status';
                    190: 	}
1.43      albertel  191: 	$slots = \%slots;
                    192:     }
1.41      albertel  193: 
1.48      albertel  194:     my %consumed_uniqueperiods;
                    195:     foreach my $slot_name (keys(%used_slots)) {
1.43      albertel  196: 	next if (!defined($slots->{$slot_name}) ||
                    197: 		 !ref($slots->{$slot_name}));
1.48      albertel  198: 	
1.43      albertel  199:         next if (!defined($slots->{$slot_name}{'uniqueperiod'}) ||
                    200: 		 !ref($slots->{$slot_name}{'uniqueperiod'}));
1.48      albertel  201: 	$consumed_uniqueperiods{$slot_name} = 
                    202: 	    $slots->{$slot_name}{'uniqueperiod'};
                    203:     }
                    204:     return \%consumed_uniqueperiods;
                    205: }
                    206: 
                    207: sub check_for_conflict {
                    208:     my ($symb,$new_slot_name,$new_slot,$slots,$consumed_uniqueperiods)=@_;
                    209: 
                    210:     if (!defined($new_slot->{'uniqueperiod'})) { return undef; }
                    211: 
                    212:     if (!ref($consumed_uniqueperiods)) {
                    213: 	$consumed_uniqueperiods = &get_consumed_uniqueperiods($slots);
                    214: 	if (&network_error(%$consumed_uniqueperiods)) {
                    215: 	    return 'error: Unable to determine current status';
                    216: 	}
                    217:     }
                    218:     
                    219:     my ($new_uniq_start,$new_uniq_end) = @{$new_slot->{'uniqueperiod'}};
                    220:     foreach my $slot_name (keys(%$consumed_uniqueperiods)) {
                    221: 	my ($start,$end)=@{$consumed_uniqueperiods->{$slot_name}};
1.43      albertel  222: 	if (!
                    223: 	    ($start < $new_uniq_start &&  $end < $new_uniq_start) ||
                    224: 	    ($start > $new_uniq_end   &&  $end > $new_uniq_end  )) {
1.5       albertel  225: 	    return $slot_name;
                    226: 	}
                    227:     }
                    228:     return undef;
                    229: 
                    230: }
                    231: 
1.40      albertel  232: sub network_error {
                    233:     my ($result) = @_;
                    234:     if ($result =~ /^(con_lost|no_such_host|error: [^2])/) {
                    235: 	return 1;
                    236:     }
                    237:     return 0;
                    238: }
                    239: 
1.2       albertel  240: sub make_reservation {
                    241:     my ($slot_name,$slot,$symb)=@_;
1.3       albertel  242: 
                    243:     my ($cnum,$cdom)=&get_course();
                    244: 
                    245:     my $value=&Apache::lonnet::EXT("resource.0.availablestudent",$symb,
                    246: 				   $env{'user.domain'},$env{'user.name'});
                    247:     &Apache::lonxml::debug("value is  $value<br />");
1.40      albertel  248:     if (&network_error($value)) { 
                    249: 	return 'error: Unable to determine current status';
                    250:     }
                    251: 
1.3       albertel  252:     foreach my $other_slot (split(/:/, $value)) {
                    253: 	if ($other_slot eq $slot_name) {
                    254: 	    my %consumed=&Apache::lonnet::dump('slot_reservations', $cdom,
                    255: 					       $cnum, "^$slot_name\0");   
1.40      albertel  256: 	    if (&network_error($value)) { 
                    257: 		return 'error: Unable to determine current status';
                    258: 	    }
1.3       albertel  259: 	    my $me=$env{'user.name'}.'@'.$env{'user.domain'};
                    260: 	    foreach my $key (keys(%consumed)) {
                    261: 		if ($consumed{$key}->{'name'} eq $me) {
                    262: 		    my $num=(split('\0',$key))[1];
                    263: 		    return -$num;
                    264: 		}
                    265: 	    }
                    266: 	}
                    267:     }
                    268: 
1.2       albertel  269:     my $max=$slot->{'maxspace'};
1.3       albertel  270:     if (!defined($max)) { $max=99999; }
1.2       albertel  271: 
                    272:     my (@ids)=&get_reservation_ids($slot_name);
1.40      albertel  273:     if (&network_error(@ids)) { 
                    274: 	return 'error: Unable to determine current status';
                    275:     }
1.2       albertel  276:     my $last=0;
                    277:     foreach my $id (@ids) {
                    278: 	my $num=(split('\0',$id))[1];
                    279: 	if ($num > $last) { $last=$num; }
                    280:     }
                    281:     
                    282:     my $wanted=$last+1;
1.3       albertel  283:     &Apache::lonxml::debug("wanted $wanted<br />");
1.7       albertel  284:     if (scalar(@ids) >= $max) {
1.2       albertel  285: 	# full up
1.7       albertel  286: 	return undef;
1.2       albertel  287:     }
                    288:     
                    289:     my %reservation=('name'      => $env{'user.name'}.'@'.$env{'user.domain'},
                    290: 		     'timestamp' => time,
                    291: 		     'symb'      => $symb);
                    292: 
                    293:     my $success=&Apache::lonnet::newput('slot_reservations',
                    294: 					{"$slot_name\0$wanted" =>
                    295: 					     \%reservation},
1.3       albertel  296: 					$cdom, $cnum);
                    297: 
1.2       albertel  298:     if ($success eq 'ok') {
1.3       albertel  299: 	my $new_value=$slot_name;
                    300: 	if ($value) {
                    301: 	    $new_value=$value.':'.$new_value;
                    302: 	}
                    303: 	my $result=&Apache::lonparmset::storeparm_by_symb($symb,
                    304: 						      '0_availablestudent',
                    305: 						       1, $new_value, 'string',
                    306: 						       $env{'user.name'},
                    307: 					               $env{'user.domain'});
                    308: 	&Apache::lonxml::debug("hrrm $result");
1.2       albertel  309: 	return $wanted;
                    310:     }
1.3       albertel  311: 
1.2       albertel  312:     # someone else got it
1.3       albertel  313:     return undef;
                    314: }
                    315: 
1.33      albertel  316: sub remove_registration {
                    317:     my ($r) = @_;
                    318:     my $name = &Apache::loncommon::plainname($env{'form.uname'},
                    319: 					     $env{'form.udom'});
                    320: 
                    321:     my $title = &Apache::lonnet::gettitle($env{'form.symb'});
                    322: 
                    323:     my $hidden_input;
                    324:     foreach my $parm ('uname','udom','slotname','entry','symb') {
                    325: 	$hidden_input .=
                    326: 	    '<input type="hidden" name="'.$parm.'" value="'
                    327: 	    .&HTML::Entities::encode($env{'form.'.$parm},'"<>&\'').'" />'."\n";
                    328:     }
                    329:     $r->print(<<"END_CONFIRM");
                    330: <p> Remove $name from slot $env{'form.slotname'} for $title</p>
                    331: <form action="/adm/slotrequest" method="POST">
                    332:     <input type="hidden" name="command" value="release" />
                    333:     $hidden_input
                    334:     <input type="submit" name="Yes" value="yes" />
                    335: </form>
                    336: <form action="/adm/slotrequest" method="POST">
                    337:     <input type="hidden" name="command" value="showslots" />
                    338:     <input type="submit" name="No" value="no" />
                    339: </form>
                    340: END_CONFIRM
                    341: 
                    342: }
                    343: 
1.5       albertel  344: sub release_slot {
1.33      albertel  345:     my ($r,$symb,$slot_name,$inhibit_return_link,$mgr)=@_;
1.6       albertel  346: 
                    347:     if ($slot_name eq '') { $slot_name=$env{'form.slotname'}; }
                    348:     my ($cnum,$cdom)=&get_course();
                    349: 
1.33      albertel  350:     my ($uname,$udom) = ($env{'user.name'}, $env{'user.domain'});
                    351:     if ($mgr eq 'F' 
                    352: 	&& defined($env{'form.uname'}) && defined($env{'form.udom'})) {
                    353: 	($uname,$udom) = ($env{'form.uname'}, $env{'form.udom'});
                    354:     }
                    355: 
                    356:     if ($mgr eq 'F' 
                    357: 	&& defined($env{'form.symb'})) {
                    358: 	$symb = $env{'form.symb'};
                    359:     }
1.39      albertel  360:     my %slot=&Apache::lonnet::get_slot($slot_name);
                    361:     my $description=&get_description($env{'form.slotname'},\%slot);
1.33      albertel  362: 
1.39      albertel  363:     if ($mgr ne 'F') {
1.43      albertel  364: 	if ($slot{'starttime'} < time) {
                    365: 	    $r->print("<p>Not allowed to release Reservation: $description, as it has already ended.  </p>");
1.42      albertel  366: 	    &return_link($r);
1.39      albertel  367: 	    return 0;
                    368: 	}
                    369:     }
1.5       albertel  370:     # get parameter string, check for existance, rebuild string with the slot
1.6       albertel  371:     my @slots = split(/:/,&Apache::lonnet::EXT("resource.0.availablestudent",
1.33      albertel  372: 					       $symb,$udom,$uname));
                    373: 
1.6       albertel  374:     my @new_slots;
                    375:     foreach my $exist_slot (@slots) {
                    376: 	if ($exist_slot eq $slot_name) { next; }
                    377: 	push(@new_slots,$exist_slot);
                    378:     }
                    379:     my $new_param = join(':',@new_slots);
1.5       albertel  380: 
                    381:     # get slot reservations, check if user has one, if so remove reservation
1.6       albertel  382:     my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
                    383: 				       "^$slot_name\0");
                    384:     foreach my $entry (keys(%consumed)) {
1.33      albertel  385: 	if ( $consumed{$entry}->{'name'} eq ($uname.'@'.$udom) ) {
1.6       albertel  386: 	    &Apache::lonnet::del('slot_reservations',[$entry],
                    387: 				 $cdom,$cnum);
                    388: 	}
                    389:     }
1.33      albertel  390: 
1.5       albertel  391:     # store new parameter string
1.6       albertel  392:     my $result=&Apache::lonparmset::storeparm_by_symb($symb,
                    393: 						      '0_availablestudent',
                    394: 						      1, $new_param, 'string',
1.33      albertel  395: 						      $uname,$udom);
1.6       albertel  396:     $r->print("<p>Released Reservation: $description</p>");
1.33      albertel  397:     if ($mgr eq 'F') {
                    398: 	$r->print('<p><a href="/adm/slotrequest?command=showslots">'.
                    399: 		  &mt('Return to slot list').'</a></p>');
                    400:     }
1.42      albertel  401:     if (!$inhibit_return_link) { &return_link($r);  }
1.6       albertel  402:     return 1;
1.5       albertel  403: }
                    404: 
1.34      albertel  405: sub delete_slot {
                    406:     my ($r)=@_;
                    407: 
                    408:     my $slot_name = $env{'form.slotname'};
                    409:     my %slot=&Apache::lonnet::get_slot($slot_name);
                    410: 
                    411:     my ($cnum,$cdom)=&get_course();
                    412:     my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
                    413: 				       "^$slot_name\0");
1.38      albertel  414:     my ($tmp) = %consumed;
                    415:     if ($tmp =~ /error: 2/) { undef(%consumed); }
1.34      albertel  416: 
                    417:     if (%slot && !%consumed) {
                    418: 	$slot{'type'} = 'deleted';
                    419: 	my $ret = &Apache::lonnet::cput('slots', {$slot_name => \%slot},
                    420: 					$cdom, $cnum);
                    421: 	if ($ret eq 'ok') {
                    422: 	    $r->print("<p>Slot <tt>$slot_name</tt> marked as deleted.</p>");
                    423: 	} else {
                    424: 	    $r->print("<p> An error ($ret) occurse when attempting to delete Slot <tt>$slot_name</tt>.</p>");
                    425: 	}
                    426:     } else {
                    427: 	if (%consumed) {
                    428: 	    $r->print("<p>Slot <tt>$slot_name</tt> has active reservations.</p>");
                    429: 	} else {
                    430: 	    $r->print("<p>Slot <tt>$slot_name</tt> does not exist.</p>");
                    431: 	}
                    432:     }
                    433:     $r->print('<p><a href="/adm/slotrequest?command=showslots">'.
                    434: 	      &mt('Return to slot list').'</a></p>');
1.42      albertel  435:     &return_link($r);
1.34      albertel  436: }
                    437: 
1.40      albertel  438: sub return_link {
                    439:     my ($r) = @_;
                    440:     $r->print('<p><a href="/adm/flip?postdata=return:">'.
                    441: 	      &mt('Return to last resource').'</a></p>');
                    442: }
                    443: 
1.3       albertel  444: sub get_slot {
                    445:     my ($r,$symb)=@_;
                    446: 
1.43      albertel  447:     my %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
                    448:     my $slot_name=&check_for_conflict($symb,$env{'form.slotname'},\%slot);
1.40      albertel  449: 
                    450:     if ($slot_name =~ /^error: (.*)/) {
                    451: 	$r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
                    452: 	&return_link($r);
                    453: 	return;
                    454:     }
1.5       albertel  455:     if ($slot_name) {
                    456: 	my %slot=&Apache::lonnet::get_slot($slot_name);
1.6       albertel  457: 	my $description1=&get_description($slot_name,\%slot);
                    458: 	%slot=&Apache::lonnet::get_slot($env{'form.slotname'});
                    459: 	my $description2=&get_description($env{'form.slotname'},\%slot);
                    460: 	$r->print("<p>Already have a reservation: $description1</p>");
1.7       albertel  461: 	if ($slot_name ne $env{'form.slotname'}) {
                    462: 	    $r->print(<<STUFF);
1.6       albertel  463: <form method="POST" action="/adm/slotrequest">
                    464:    <input type="hidden" name="symb" value="$env{'form.symb'}" />
                    465:    <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
                    466:    <input type="hidden" name="releaseslot" value="$slot_name" />
                    467:    <input type="hidden" name="command" value="change" />
                    468: STUFF
1.7       albertel  469:             $r->print("<p>You can either ");
                    470: 	    $r->print(<<STUFF);
1.6       albertel  471:    <input type="submit" name="change" value="Change" />
                    472: STUFF
1.7       albertel  473: 	    $r->print(' your reservation from <b>'.$description1.'</b> to <b>'.
                    474: 		      $description2.
1.40      albertel  475: 		      '</b> <br />or </p>');
                    476: 	    &return_link($r);
1.7       albertel  477: 	    $r->print(<<STUFF);
1.6       albertel  478: </form>
                    479: STUFF
1.7       albertel  480:         } else {
1.40      albertel  481: 	    &return_link($r);
1.7       albertel  482: 	}
1.5       albertel  483: 	return;
                    484:     }
1.45      albertel  485: 
1.3       albertel  486:     my $reserved=&make_reservation($env{'form.slotname'},
                    487: 				   \%slot,$symb);
                    488:     my $description=&get_description($env{'form.slotname'},\%slot);
1.7       albertel  489:     if (defined($reserved)) {
1.40      albertel  490: 	if ($slot_name =~ /^error: (.*)/) {
                    491: 	    $r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
                    492: 	} elsif ($reserved > -1) {
1.7       albertel  493: 	    $r->print("<p>Success: $description</p>");
                    494: 	} elsif ($reserved < 0) {
                    495: 	    $r->print("<p>Already reserved: $description</p>");
                    496: 	}
1.40      albertel  497: 	&return_link($r);
                    498: 	return;
1.3       albertel  499:     }
                    500: 
1.7       albertel  501:     my %lt=('request'=>"Availibility list",
1.3       albertel  502: 	    'try'    =>'Try again');
                    503:     %lt=&Apache::lonlocal::texthash(%lt);
                    504: 
                    505:     $r->print(<<STUFF);
                    506: <p> <font color="red">Failed</font> to reserve a spot for $description. </p>
                    507: <p>
                    508: <form method="POST" action="/adm/slotrequest">
                    509:    <input type="submit" name="Try Again" value="$lt{'try'}" />
                    510:    <input type="hidden" name="symb" value="$env{'form.symb'}" />
                    511:    <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
                    512:    <input type="hidden" name="command" value="get" />
                    513: </form>
                    514: ?
                    515: </p>
                    516: <p>
                    517: or
                    518: <form method="POST" action="/adm/slotrequest">
                    519:     <input type="hidden" name="symb" value="$env{'form.symb'}" />
                    520:     <input type="submit" name="requestattempt" value="$lt{'request'}" />
                    521: </form>
                    522: </p>
                    523: or
                    524: STUFF
1.42      albertel  525: 
                    526:     &return_link($r);
1.3       albertel  527:     return;
                    528: }
                    529: 
                    530: sub allowed_slot {
1.48      albertel  531:     my ($slot_name,$slot,$symb,$slots,$consumed_uniqueperiods)=@_;
1.49    ! albertel  532: 
1.3       albertel  533:     #already started
                    534:     if ($slot->{'starttime'} < time) {
1.5       albertel  535: 	# all open slot to be schedulable
                    536: 	#return 0;
1.3       albertel  537:     }
1.5       albertel  538:     &Apache::lonxml::debug("$slot_name starttime good");
1.49    ! albertel  539: 
1.3       albertel  540:     #already ended
                    541:     if ($slot->{'endtime'} < time) {
                    542: 	return 0;
                    543:     }
1.5       albertel  544:     &Apache::lonxml::debug("$slot_name endtime good");
1.49    ! albertel  545: 
1.3       albertel  546:     # not allowed to pick this one
                    547:     if (defined($slot->{'type'})
                    548: 	&& $slot->{'type'} ne 'schedulable_student') {
                    549: 	return 0;
                    550:     }
1.5       albertel  551:     &Apache::lonxml::debug("$slot_name type good");
1.49    ! albertel  552: 
        !           553:     # its for a different set of users
        !           554:     if (defined($slot->{'allowedsection'})) {
        !           555: 	
        !           556: 	return 0;
        !           557:     }
        !           558:     &Apache::lonxml::debug("$slot_name type good");
        !           559: 
        !           560:     # its for a different set of users
        !           561:     if (defined($slot->{'allowedusers'})) {
        !           562: 	
        !           563: 	return 0;
        !           564:     }
        !           565:     &Apache::lonxml::debug("$slot_name type good");
        !           566: 
1.3       albertel  567:     # not allowed for this resource
                    568:     if (defined($slot->{'symb'})
                    569: 	&& $slot->{'symb'} ne $symb) {
                    570: 	return 0;
                    571:     }
1.48      albertel  572:     my $conflict = &check_for_conflict($symb,$slot_name,$slot,$slots,
                    573: 				       $consumed_uniqueperiods);
1.44      albertel  574:     if ($conflict) {
                    575: 	if ($slots->{$conflict}{'starttime'} < time) {
                    576: 	    return 0;
                    577: 	}
                    578:     }
1.5       albertel  579:     &Apache::lonxml::debug("$slot_name symb good");
1.3       albertel  580:     return 1;
1.2       albertel  581: }
                    582: 
1.3       albertel  583: sub get_description {
                    584:     my ($slot_name,$slot)=@_;
                    585:     my $description=$slot->{'description'};
                    586:     if (!defined($description)) {
1.4       albertel  587: 	$description=&mt('[_1] From [_2] to [_3]',$slot_name,
1.3       albertel  588: 			 &Apache::lonlocal::locallocaltime($slot->{'starttime'}),
                    589: 			 &Apache::lonlocal::locallocaltime($slot->{'endtime'}));
                    590:     }
                    591:     return $description;
                    592: }
1.2       albertel  593: 
                    594: sub show_choices {
                    595:     my ($r,$symb)=@_;
                    596: 
                    597:     my ($cnum,$cdom)=&get_course();
                    598:     my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
1.48      albertel  599:     my $consumed_uniqueperiods = &get_consumed_uniqueperiods(\%slots);
1.3       albertel  600:     my $available;
1.2       albertel  601:     $r->print('<table border="1">');
1.5       albertel  602:     &Apache::lonxml::debug("Checking Slots");
1.43      albertel  603:     my @got_slots=&check_for_reservation($symb,'allslots');
1.2       albertel  604:     foreach my $slot (sort 
                    605: 		      { return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'} }
                    606: 		      (keys(%slots)))  {
1.5       albertel  607: 
                    608: 	&Apache::lonxml::debug("Checking Slot $slot");
1.48      albertel  609: 	next if (!&allowed_slot($slot,$slots{$slot},undef,\%slots,
                    610: 				$consumed_uniqueperiods));
1.3       albertel  611: 
                    612: 	$available++;
                    613: 
                    614: 	my $description=&get_description($slot,$slots{$slot});
1.2       albertel  615: 
                    616: 	my $form=&mt('Unavailable');
1.43      albertel  617: 	if ((grep(/^\Q$slot\E$/,@got_slots)) ||
1.7       albertel  618: 	    &space_available($slot,$slots{$slot},$symb)) {
1.5       albertel  619: 	    my $text=&mt('Select');
                    620: 	    my $command='get';
1.43      albertel  621: 	    if (grep(/^\Q$slot\E$/,@got_slots)) {
1.5       albertel  622: 		$text=&mt('Free Reservation');
                    623: 		$command='release';
1.43      albertel  624: 	    } else {
                    625: 		my $conflict = &check_for_conflict($symb,$slot,$slots{$slot},
1.48      albertel  626: 						   \%slots,
                    627: 						   $consumed_uniqueperiods);
1.43      albertel  628: 		if ($conflict) {
                    629: 		    $text=&mt('Change Reservation');
                    630: 		    $command='get';
                    631: 		}
1.5       albertel  632: 	    }
1.3       albertel  633: 	    my $escsymb=&Apache::lonnet::escape($symb);
1.2       albertel  634: 	    $form=<<STUFF;
1.3       albertel  635:    <form method="POST" action="/adm/slotrequest">
1.5       albertel  636:      <input type="submit" name="Select" value="$text" />
1.3       albertel  637:      <input type="hidden" name="symb" value="$escsymb" />
                    638:      <input type="hidden" name="slotname" value="$slot" />
1.5       albertel  639:      <input type="hidden" name="command" value="$command" />
1.2       albertel  640:    </form>
                    641: STUFF
                    642: 	}
                    643: 	$r->print(<<STUFF);
                    644: <tr>
                    645:  <td>$form</td>
                    646:  <td>$description</td>
                    647: </tr>
                    648: STUFF
                    649:     }
1.3       albertel  650: 
                    651:     if (!$available) {
1.5       albertel  652: 	$r->print('<tr><td>No available times. <a href="/adm/flip?postdata=return:">'.
1.3       albertel  653: 		  &mt('Return to last resource').'</a></td></tr>');
                    654:     }
1.2       albertel  655:     $r->print('</table>');
                    656: }
                    657: 
1.30      albertel  658: sub to_show {
1.35      albertel  659:     my ($slot,$when,$deleted) = @_;
1.30      albertel  660:     my $time=time;
                    661:     my $week=60*60*24*7;
1.35      albertel  662:     if ($deleted eq 'hide' && $slot->{'type'} eq 'deleted') {
                    663: 	return 0;
                    664:     }
                    665:     if ($when eq 'any') {
                    666: 	return 1;
                    667:     } elsif ($when eq 'now') {
1.30      albertel  668: 	if ($time > $slot->{'starttime'} &&
                    669: 	    $time < $slot->{'endtime'}) {
                    670: 	    return 1;
                    671: 	}
                    672: 	return 0;
                    673:     } elsif ($when eq 'nextweek') {
                    674: 	if ( ($time        < $slot->{'starttime'} &&
                    675: 	      ($time+$week) > $slot->{'starttime'})
                    676: 	     ||
                    677: 	     ($time        < $slot->{'endtime'} &&
                    678: 	      ($time+$week) > $slot->{'endtime'}) ) {
                    679: 	    return 1;
                    680: 	}
                    681: 	return 0;
                    682:     } elsif ($when eq 'lastweek') {
                    683: 	if ( ($time        > $slot->{'starttime'} &&
                    684: 	      ($time-$week) < $slot->{'starttime'})
                    685: 	     ||
                    686: 	     ($time        > $slot->{'endtime'} &&
                    687: 	      ($time-$week) < $slot->{'endtime'}) ) {
                    688: 	    return 1;
                    689: 	}
                    690: 	return 0;
                    691:     } elsif ($when eq 'willopen') {
                    692: 	if ($time < $slot->{'starttime'}) {
                    693: 	    return 1;
                    694: 	}
                    695: 	return 0;
                    696:     } elsif ($when eq 'wereopen') {
                    697: 	if ($time > $slot->{'endtime'}) {
                    698: 	    return 1;
                    699: 	}
                    700: 	return 0;
                    701:     }
                    702:     
                    703:     return 1;
                    704: }
                    705: 
1.33      albertel  706: sub remove_link {
                    707:     my ($slotname,$entry,$uname,$udom,$symb) = @_;
                    708: 
                    709:     $slotname  = &Apache::lonnet::escape($slotname);
                    710:     $entry     = &Apache::lonnet::escape($entry);
                    711:     $uname     = &Apache::lonnet::escape($uname);
                    712:     $udom      = &Apache::lonnet::escape($udom);
                    713:     $symb      = &Apache::lonnet::escape($symb);
                    714: 
                    715:     my $remove= &mt('Remove');
                    716: 
                    717:     return <<"END_LINK";
                    718:  <a href="/adm/slotrequest?command=remove_registration&slotname=$slotname&entry=$entry&uname=$uname&udom=$udom&symb=$symb"
                    719:    >($remove)</a>
                    720: END_LINK
                    721: 
                    722: }
                    723: 
1.5       albertel  724: sub show_table {
1.19      albertel  725:     my ($r,$mgr)=@_;
1.5       albertel  726: 
                    727:     my ($cnum,$cdom)=&get_course();
                    728:     my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
1.19      albertel  729:     if ( (keys(%slots))[0] =~ /^error: 2 /) {
                    730: 	undef(%slots);
                    731:     } 
1.5       albertel  732:     my $available;
1.14      albertel  733:     if ($mgr eq 'F') {
1.30      albertel  734: 	$r->print('<div>');
1.14      albertel  735: 	$r->print('<form method="POST" action="/adm/slotrequest">
                    736: <input type="hidden" name="command" value="uploadstart" />
                    737: <input type="submit" name="start" value="'.&mt('Upload Slot List').'" />
                    738: </form>');
1.28      albertel  739: 	$r->print('<form method="POST" action="/adm/helper/newslot.helper">
                    740: <input type="submit" name="newslot" value="'.&mt('Create a New Slot').'" />
                    741: </form>');
1.30      albertel  742: 	$r->print('</div>');
1.14      albertel  743:     }
1.29      albertel  744:     
1.35      albertel  745:     my %Saveable_Parameters = ('show'    => 'array',
                    746: 			       'when'    => 'scalar',
                    747: 			       'order'   => 'scalar',
                    748: 			       'deleted' => 'scalar',
                    749: 			       );
1.46      albertel  750:     &Apache::loncommon::store_course_settings('slotrequest',
                    751: 					      \%Saveable_Parameters);
                    752:     &Apache::loncommon::restore_course_settings('slotrequest',
                    753: 						\%Saveable_Parameters);
                    754:     &Apache::grades::init_perm();
                    755:     my ($classlist,$section,$fullname)=&Apache::grades::getclasslist('all');
                    756:     &Apache::grades::reset_perm();
1.29      albertel  757: 
1.30      albertel  758:     my %show_fields=&Apache::lonlocal::texthash(
1.49    ! albertel  759: 	     'name'            => 'Slot Name',
        !           760: 	     'description'     => 'Description',
        !           761: 	     'type'            => 'Type',
        !           762: 	     'starttime'       => 'Start time',
        !           763: 	     'endtime'         => 'End Time',
        !           764:              'startreserve'    => 'Time students can start reserving',
        !           765: 	     'secret'          => 'Secret Word',
        !           766: 	     'maxspace'        => 'Maximum # of students',
        !           767: 	     'ip'              => 'IP or DNS restrictions',
        !           768: 	     'symb'            => 'Resource slot is restricted to.',
        !           769: 	     'allowedsections' => 'Sections slot is restricted to.',
        !           770: 	     'allowedusers'    => 'Users slot is restricted to.',
        !           771: 	     'uniqueperiod'    => 'Period of time slot is unique',
        !           772: 	     'scheduled'       => 'Scheduled Students',
        !           773: 	     'proctor'         => 'List of proctors');
1.30      albertel  774:     my @show_order=('name','description','type','starttime','endtime',
1.49    ! albertel  775: 		    'startreserve','secret','maxspace','ip','symb',
        !           776: 		    'allowedsections','allowedusers','uniqueperiod',
        !           777: 		    'scheduled','proctor');
1.30      albertel  778:     my @show = 
1.29      albertel  779: 	(exists($env{'form.show'})) ? &Apache::loncommon::get_env_multiple('form.show')
1.30      albertel  780: 	                            : keys(%show_fields);
                    781:     my %show =  map { $_ => 1 } (@show);
                    782: 
                    783:     my %when_fields=&Apache::lonlocal::texthash(
1.35      albertel  784: 	     'now'      => 'Open now',
1.30      albertel  785: 	     'nextweek' => 'Open within the next week',
                    786: 	     'lastweek' => 'Were open last week',
                    787: 	     'willopen' => 'Will open later',
1.35      albertel  788: 	     'wereopen' => 'Were open',
                    789: 	     'any'      => 'Anytime',
                    790: 						);
                    791:     my @when_order=('any','now','nextweek','lastweek','willopen','wereopen');
1.30      albertel  792:     $when_fields{'select_form_order'} = \@when_order;
                    793:     my $when = 	(exists($env{'form.when'})) ? $env{'form.when'}
                    794:                                             : 'now';
1.29      albertel  795: 
1.46      albertel  796:     my %stu_display_fields=
                    797: 	&Apache::lonlocal::texthash('username' => 'User name',
                    798: 				    'fullname' => 'Full name',
                    799: 				    );
                    800:     my @stu_display_order=('fullname','username');
                    801:     my @stu_display = 
                    802: 	(exists($env{'form.studisplay'})) ? &Apache::loncommon::get_env_multiple('form.studisplay')
                    803: 	                                  : keys(%stu_display_fields);
                    804:     my %stu_display =  map { $_ => 1 } (@stu_display);
                    805: 
1.35      albertel  806:     my $hide_radio = 
                    807: 	&Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'hide');
                    808:     my $show_radio = 
                    809: 	&Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'show');
                    810: 	
1.29      albertel  811:     $r->print('<form method="POST" action="/adm/slotrequest">
1.30      albertel  812: <input type="hidden" name="command" value="showslots" />');
                    813:     $r->print('<div>');
1.35      albertel  814:     $r->print('<table class="inline">
                    815:       <tr><th>'.&mt('Show').'</th>
1.46      albertel  816:           <th>'.&mt('Student Display').'</th>
1.35      albertel  817:           <th>'.&mt('Open').'</th>
                    818:           <th>'.&mt('Options').'</th>
                    819:       </tr>
                    820:       <tr><td>'.&Apache::loncommon::multiple_select_form('show',\@show,6,\%show_fields,\@show_order).
                    821: 	      '</td>
1.46      albertel  822:            <td>
                    823:          '.&Apache::loncommon::multiple_select_form('studisplay',\@stu_display,
                    824: 						    6,\%stu_display_fields,
                    825: 						    \@stu_display_order).'
                    826:            </td>
1.35      albertel  827:            <td>'.&Apache::loncommon::select_form($when,'when',%when_fields).
                    828:           '</td>
                    829:            <td>
                    830:             <table>
                    831:               <tr>
                    832:                 <td rowspan="2">Deleted slots:</td>
                    833:                 <td><label>'.$show_radio.'Show</label></td>
                    834:               </tr>
                    835:               <tr>
                    836:                 <td><label>'.$hide_radio.'Hide</label></td>
                    837:               </tr>
                    838:             </table>
                    839: 	  </td>
                    840:        </tr>
                    841:     </table>');
1.30      albertel  842:     $r->print('</div>');
                    843:     $r->print('<p><input type="submit" name="start" value="'.&mt('Update Display').'" /></p>');
1.21      albertel  844:     my $linkstart='<a href="/adm/slotrequest?command=showslots&amp;order=';
1.30      albertel  845:     $r->print('<table class="thinborder">
1.10      albertel  846: <tr>
1.29      albertel  847:   <th></th>');
1.30      albertel  848:     foreach my $which (@show_order) {
                    849: 	if ($which ne 'proctor' && exists($show{$which})) {
                    850: 	    $r->print('<th>'.$linkstart.$which.'">'.$show_fields{$which}.'</a></th>');
1.29      albertel  851: 	}
                    852:     }
                    853: 
1.21      albertel  854:     my %name_cache;
                    855:     my $slotsort = sub {
1.49    ! albertel  856: 	if ($env{'form.order'}=~/^(type|description|endtime|startreserve|maxspace|ip|symb|allowedsections|allowedusers)$/) {
1.21      albertel  857: 	    if (lc($slots{$a}->{$env{'form.order'}})
                    858: 		ne lc($slots{$b}->{$env{'form.order'}})) {
                    859: 		return (lc($slots{$a}->{$env{'form.order'}}) 
                    860: 			cmp lc($slots{$b}->{$env{'form.order'}}));
                    861: 	    }
1.23      albertel  862: 	} elsif ($env{'form.order'} eq 'name') {
                    863: 	    if (lc($a) cmp lc($b)) {
                    864: 		return lc($a) cmp lc($b);
                    865: 	    }
1.29      albertel  866: 	} elsif ($env{'form.order'} eq 'uniqueperiod') {
1.21      albertel  867: 	    
                    868: 	    if ($slots{$a}->{'uniqueperiod'}[0] 
                    869: 		ne $slots{$b}->{'uniqueperiod'}[0]) {
                    870: 		return ($slots{$a}->{'uniqueperiod'}[0]
                    871: 			cmp $slots{$b}->{'uniqueperiod'}[0]);
                    872: 	    }
                    873: 	    if ($slots{$a}->{'uniqueperiod'}[1] 
                    874: 		ne $slots{$b}->{'uniqueperiod'}[1]) {
                    875: 		return ($slots{$a}->{'uniqueperiod'}[1]
                    876: 			cmp $slots{$b}->{'uniqueperiod'}[1]);
                    877: 	    }
                    878: 	}
                    879: 	return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'};
                    880:     };
                    881:     foreach my $slot (sort $slotsort (keys(%slots)))  {
1.35      albertel  882: 	if (!&to_show($slots{$slot},$when,$env{'form.deleted'})) { next; }
1.5       albertel  883: 	if (defined($slots{$slot}->{'type'})
                    884: 	    && $slots{$slot}->{'type'} ne 'schedulable_student') {
1.13      albertel  885: 	    #next;
1.5       albertel  886: 	}
                    887: 	my $description=&get_description($slot,$slots{$slot});
                    888: 	my $ids;
1.47      albertel  889: 	if (exists($show{'scheduled'})) {
                    890: 	    my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
                    891: 					       "^$slot\0");
                    892: 	    my ($tmp)=%consumed;
                    893: 	    if ($tmp !~ /^error: /) {
                    894: 		foreach my $entry (sort(keys(%consumed))) {
                    895: 		    my (undef,$id)=split("\0",$entry);
                    896: 		    my ($uname,$udom) = split('@',$consumed{$entry}{'name'});
                    897: 		    $ids.= '<nobr>';
                    898: 		    foreach my $item (@stu_display_order) {
                    899: 			if ($stu_display{$item}) {
                    900: 			    if ($item eq 'fullname') {
                    901: 				$ids.=$fullname->{"$uname:$udom"}.' ';
                    902: 			    } elsif ($item eq 'username') {
                    903: 				$ids.="<tt>$uname\@$udom</tt> ";
                    904: 			    }
1.46      albertel  905: 			}
                    906: 		    }
1.47      albertel  907: 		    $ids.=&remove_link($slot,$entry,$uname,$udom,
                    908: 				       $consumed{$entry}{'symb'}).'</nobr><br />';
1.46      albertel  909: 		}
1.38      albertel  910: 	    }
1.5       albertel  911: 	}
1.33      albertel  912: 
1.24      albertel  913: 	my $start=($slots{$slot}->{'starttime'}?
                    914: 		   &Apache::lonlocal::locallocaltime($slots{$slot}->{'starttime'}):'');
                    915: 	my $end=($slots{$slot}->{'endtime'}?
                    916: 		 &Apache::lonlocal::locallocaltime($slots{$slot}->{'endtime'}):'');
1.28      albertel  917: 	my $start_reserve=($slots{$slot}->{'startreserve'}?
1.24      albertel  918: 			   &Apache::lonlocal::locallocaltime($slots{$slot}->{'startreserve'}):'');
                    919: 	
1.14      albertel  920: 	my $unique;
                    921: 	if (ref($slots{$slot}{'uniqueperiod'})) {
                    922: 	    $unique=localtime($slots{$slot}{'uniqueperiod'}[0]).','.
                    923: 		localtime($slots{$slot}{'uniqueperiod'}[1]);
                    924: 	}
1.33      albertel  925: 
1.29      albertel  926: 	my $title;
                    927: 	if (exists($slots{$slot}{'symb'})) {
                    928: 	    my (undef,undef,$res)=
                    929: 		&Apache::lonnet::decode_symb($slots{$slot}{'symb'});
                    930: 	    $res =   &Apache::lonnet::clutter($res);
                    931: 	    $title = &Apache::lonnet::gettitle($slots{$slot}{'symb'});
                    932: 	    $title='<a href="'.$res.'?symb='.$slots{$slot}{'symb'}.'">'.$title.'</a>';
                    933: 	}
1.33      albertel  934: 
1.49    ! albertel  935: 	my $allowedsections;
        !           936: 	if (exists($show{'allowedsections'})) {
        !           937: 	    $allowedsections = 
        !           938: 		join(', ',sort(split(/\s*,\s*/,
        !           939: 				     $slots{$slot}->{'allowedsections'})));
        !           940: 	}
        !           941: 
        !           942: 	my @allowedusers;
        !           943: 	if (exists($show{'allowedusers'})) {
        !           944: 	    @allowedusers= map {
        !           945: 		my ($uname,$udom)=split(/:/,$_);
        !           946: 		my $fullname=$name_cache{$_};
        !           947: 		if (!defined($fullname)) {
        !           948: 		    $fullname = &Apache::loncommon::plainname($uname,$udom);
        !           949: 		    $fullname =~s/\s/&nbsp;/g;
        !           950: 		    $name_cache{$_} = $fullname;
        !           951: 		}
        !           952: 		&Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
        !           953: 	    } (sort(split(/\s*,\s*/,$slots{$slot}->{'allowedusers'})));
        !           954: 	}
        !           955: 	my $allowedusers=join(', ',@allowedusers);
        !           956: 	
1.29      albertel  957: 	my @proctors;
                    958: 	my $rowspan=1;
                    959: 	my $colspan=1;
1.30      albertel  960: 	if (exists($show{'proctor'})) {
1.29      albertel  961: 	    $rowspan=2;
                    962: 	    @proctors= map {
                    963: 		my ($uname,$udom)=split(/@/,$_);
                    964: 		my $fullname=$name_cache{$_};
                    965: 		if (!defined($fullname)) {
                    966: 		    $fullname = &Apache::loncommon::plainname($uname,$udom);
                    967: 		    $fullname =~s/\s/&nbsp;/g;
                    968: 		    $name_cache{$_} = $fullname;
                    969: 		}
                    970: 		&Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
                    971: 	    } (sort(split(/\s*,\s*/,$slots{$slot}->{'proctor'})));
                    972: 	}
1.20      albertel  973: 	my $proctors=join(', ',@proctors);
1.14      albertel  974: 
1.34      albertel  975: 	my $edit=(<<"EDITLINK");
1.31      albertel  976: <a href="/adm/helper/newslot.helper?name=$slot">Edit</a>
                    977: EDITLINK
1.34      albertel  978: 
                    979: 	my $delete=(<<"DELETELINK");
                    980: <a href="/adm/slotrequest?command=delete&slotname=$slot">Delete</a>
                    981: DELETELINK
                    982:         if ($ids ne '') { undef($delete); }
                    983: 
                    984:         $r->print("<tr>\n<td rowspan=\"$rowspan\">$edit $delete</td>\n");
1.30      albertel  985: 	if (exists($show{'name'})) {
1.29      albertel  986: 	    $colspan++;$r->print("<td>$slot</td>");
                    987: 	}
1.33      albertel  988: 	if (exists($show{'description'})) {
                    989: 	    $colspan++;$r->print("<td>$description</td>\n");
                    990: 	}
1.30      albertel  991: 	if (exists($show{'type'})) {
1.29      albertel  992: 	    $colspan++;$r->print("<td>$slots{$slot}->{'type'}</td>\n");
                    993: 	}
1.30      albertel  994: 	if (exists($show{'starttime'})) {
1.29      albertel  995: 	    $colspan++;$r->print("<td>$start</td>\n");
                    996: 	}
1.30      albertel  997: 	if (exists($show{'endtime'})) {
1.29      albertel  998: 	    $colspan++;$r->print("<td>$end</td>\n");
                    999: 	}
1.30      albertel 1000: 	if (exists($show{'startreserve'})) {
1.29      albertel 1001: 	    $colspan++;$r->print("<td>$start_reserve</td>\n");
                   1002: 	}
1.30      albertel 1003: 	if (exists($show{'secret'})) {
1.29      albertel 1004: 	    $colspan++;$r->print("<td>$slots{$slot}{'secret'}</td>\n");
                   1005: 	}
1.30      albertel 1006: 	if (exists($show{'maxspace'})) {
1.29      albertel 1007: 	    $colspan++;$r->print("<td>$slots{$slot}{'maxspace'}</td>\n");
                   1008: 	}
1.30      albertel 1009: 	if (exists($show{'ip'})) {
1.29      albertel 1010: 	    $colspan++;$r->print("<td>$slots{$slot}{'ip'}</td>\n");
                   1011: 	}
1.30      albertel 1012: 	if (exists($show{'symb'})) {
1.29      albertel 1013: 	    $colspan++;$r->print("<td>$title</td>\n");
                   1014: 	}
1.49    ! albertel 1015: 	if (exists($show{'allowedsections'})) {
        !          1016: 	    $colspan++;$r->print("<td>$allowedsections</td>\n");
        !          1017: 	}
        !          1018: 	if (exists($show{'allowedusers'})) {
        !          1019: 	    $colspan++;$r->print("<td>$allowedusers</td>\n");
1.29      albertel 1020: 	}
1.47      albertel 1021: 	if (exists($show{'scheduled'})) {
                   1022: 	    $colspan++;$r->print("<td>$ids</td>\n</tr>\n");
                   1023: 	}
1.30      albertel 1024: 	if (exists($show{'proctor'})) {
1.29      albertel 1025: 	    $r->print(<<STUFF);
1.21      albertel 1026: <tr>
1.29      albertel 1027:  <td colspan="$colspan">$proctors</td>
1.21      albertel 1028: </tr>
1.5       albertel 1029: STUFF
1.29      albertel 1030:         }
1.5       albertel 1031:     }
                   1032:     $r->print('</table>');
                   1033: }
                   1034: 
1.14      albertel 1035: sub upload_start {
1.19      albertel 1036:     my ($r)=@_;    
1.14      albertel 1037:     $r->print(&Apache::grades::checkforfile_js());
                   1038:     my $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
                   1039:     $result.='&nbsp;<b>'.
                   1040: 	&mt('Specify a file containing the slot definitions.').
                   1041: 	'</b></td></tr>'."\n";
                   1042:     $result.='<tr bgcolor=#ffffe6><td>'."\n";
                   1043:     my $upfile_select=&Apache::loncommon::upfile_select_html();
                   1044:     my $ignore=&mt('Ignore First Line');
                   1045:     $result.=<<ENDUPFORM;
                   1046: <form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
                   1047: <input type="hidden" name="command" value="csvuploadmap" />
                   1048: $upfile_select
                   1049: <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Data" />
                   1050: <label><input type="checkbox" name="noFirstLine" />$ignore</label>
                   1051: </form>
                   1052: ENDUPFORM
                   1053:     $result.='</td></tr></table>'."\n";
                   1054:     $result.='</td></tr></table>'."\n";
                   1055:     $r->print($result);
                   1056: }
                   1057: 
                   1058: sub csvuploadmap_header {
1.19      albertel 1059:     my ($r,$datatoken,$distotal)= @_;
1.14      albertel 1060:     my $javascript;
                   1061:     if ($env{'form.upfile_associate'} eq 'reverse') {
                   1062: 	$javascript=&csvupload_javascript_reverse_associate();
                   1063:     } else {
                   1064: 	$javascript=&csvupload_javascript_forward_associate();
                   1065:     }
                   1066: 
                   1067:     my $checked=(($env{'form.noFirstLine'})?' checked="checked"':'');
                   1068:     my $ignore=&mt('Ignore First Line');
                   1069:     $r->print(<<ENDPICK);
                   1070: <form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
                   1071: <h3>Identify fields</h3>
                   1072: Total number of records found in file: $distotal <hr />
                   1073: Enter as many fields as you can. The system will inform you and bring you back
                   1074: to this page if the data selected is insufficient to create the slots.<hr />
                   1075: <input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
                   1076: <label><input type="checkbox" name="noFirstLine" $checked />$ignore</label>
                   1077: <input type="hidden" name="associate"  value="" />
                   1078: <input type="hidden" name="datatoken"  value="$datatoken" />
                   1079: <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
                   1080: <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
                   1081: <input type="hidden" name="upfile_associate" 
                   1082:                                        value="$env{'form.upfile_associate'}" />
                   1083: <input type="hidden" name="command"    value="csvuploadassign" />
                   1084: <hr />
                   1085: <script type="text/javascript" language="Javascript">
                   1086: $javascript
                   1087: </script>
                   1088: ENDPICK
                   1089:     return '';
                   1090: 
                   1091: }
                   1092: 
                   1093: sub csvuploadmap_footer {
                   1094:     my ($request,$i,$keyfields) =@_;
                   1095:     $request->print(<<ENDPICK);
                   1096: </table>
                   1097: <input type="hidden" name="nfields" value="$i" />
                   1098: <input type="hidden" name="keyfields" value="$keyfields" />
                   1099: <input type="button" onClick="javascript:verify(this.form)" value="Create Slots" /><br />
                   1100: </form>
                   1101: ENDPICK
                   1102: }
                   1103: 
                   1104: sub csvupload_javascript_reverse_associate {
                   1105:     my $error1=&mt('You need to specify the name, starttime, endtime and a type');
                   1106:     return(<<ENDPICK);
                   1107:   function verify(vf) {
                   1108:     var foundstart=0;
                   1109:     var foundend=0;
                   1110:     var foundname=0;
                   1111:     var foundtype=0;
                   1112:     for (i=0;i<=vf.nfields.value;i++) {
                   1113:       tw=eval('vf.f'+i+'.selectedIndex');
                   1114:       if (i==0 && tw!=0) { foundname=1; }
                   1115:       if (i==1 && tw!=0) { foundtype=1; }
                   1116:       if (i==2 && tw!=0) { foundstat=1; }
                   1117:       if (i==3 && tw!=0) { foundend=1; }
                   1118:     }
                   1119:     if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
                   1120: 	alert('$error1');
                   1121: 	return;
                   1122:     }
                   1123:     vf.submit();
                   1124:   }
                   1125:   function flip(vf,tf) {
                   1126:   }
                   1127: ENDPICK
                   1128: }
                   1129: 
                   1130: sub csvupload_javascript_forward_associate {
                   1131:     my $error1=&mt('You need to specify the name, starttime, endtime and a type');
                   1132:   return(<<ENDPICK);
                   1133:   function verify(vf) {
                   1134:     var foundstart=0;
                   1135:     var foundend=0;
                   1136:     var foundname=0;
                   1137:     var foundtype=0;
                   1138:     for (i=0;i<=vf.nfields.value;i++) {
                   1139:       tw=eval('vf.f'+i+'.selectedIndex');
                   1140:       if (tw==1) { foundname=1; }
                   1141:       if (tw==2) { foundtype=1; }
                   1142:       if (tw==3) { foundstat=1; }
                   1143:       if (tw==4) { foundend=1; }
                   1144:     }
                   1145:     if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
                   1146: 	alert('$error1');
                   1147: 	return;
                   1148:     }
                   1149:     vf.submit();
                   1150:   }
                   1151:   function flip(vf,tf) {
                   1152:   }
                   1153: ENDPICK
                   1154: }
                   1155: 
                   1156: sub csv_upload_map {
1.19      albertel 1157:     my ($r)= @_;
1.14      albertel 1158: 
                   1159:     my $datatoken;
                   1160:     if (!$env{'form.datatoken'}) {
                   1161: 	$datatoken=&Apache::loncommon::upfile_store($r);
                   1162:     } else {
                   1163: 	$datatoken=$env{'form.datatoken'};
                   1164: 	&Apache::loncommon::load_tmp_file($r);
                   1165:     }
                   1166:     my @records=&Apache::loncommon::upfile_record_sep();
                   1167:     if ($env{'form.noFirstLine'}) { shift(@records); }
1.19      albertel 1168:     &csvuploadmap_header($r,$datatoken,$#records+1);
1.14      albertel 1169:     my ($i,$keyfields);
                   1170:     if (@records) {
                   1171: 	my @fields=&csvupload_fields();
                   1172: 
                   1173: 	if ($env{'form.upfile_associate'} eq 'reverse') {	
                   1174: 	    &Apache::loncommon::csv_print_samples($r,\@records);
                   1175: 	    $i=&Apache::loncommon::csv_print_select_table($r,\@records,
                   1176: 							  \@fields);
                   1177: 	    foreach (@fields) { $keyfields.=$_->[0].','; }
                   1178: 	    chop($keyfields);
                   1179: 	} else {
                   1180: 	    unshift(@fields,['none','']);
                   1181: 	    $i=&Apache::loncommon::csv_samples_select_table($r,\@records,
                   1182: 							    \@fields);
                   1183: 	    my %sone=&Apache::loncommon::record_sep($records[0]);
                   1184: 	    $keyfields=join(',',sort(keys(%sone)));
                   1185: 	}
                   1186:     }
                   1187:     &csvuploadmap_footer($r,$i,$keyfields);
                   1188: 
                   1189:     return '';
                   1190: }
                   1191: 
                   1192: sub csvupload_fields {
                   1193:     return (['name','Slot name'],
                   1194: 	    ['type','Type of slot'],
                   1195: 	    ['starttime','Start Time of slot'],
                   1196: 	    ['endtime','End Time of slot'],
1.15      albertel 1197: 	    ['startreserve','Reservation Start Time'],
1.14      albertel 1198: 	    ['ip','IP or DNS restriction'],
                   1199: 	    ['proctor','List of proctor ids'],
                   1200: 	    ['description','Slot Description'],
                   1201: 	    ['maxspace','Maximum number of reservations'],
                   1202: 	    ['symb','Resource Restriction'],
                   1203: 	    ['uniqueperiod','Date range of slot exclusion'],
1.49    ! albertel 1204: 	    ['secret','Secret word proctor uses to validate'],
        !          1205: 	    ['allowedsections','Sections slot is restricted to'],
        !          1206: 	    ['allowedusers','Users slot is restricted to'],
        !          1207: 	    );
1.14      albertel 1208: }
                   1209: 
                   1210: sub csv_upload_assign {
1.19      albertel 1211:     my ($r,$mgr)= @_;
1.14      albertel 1212:     &Apache::loncommon::load_tmp_file($r);
                   1213:     my @slotdata = &Apache::loncommon::upfile_record_sep();
                   1214:     if ($env{'form.noFirstLine'}) { shift(@slotdata); }
                   1215:     my %fields=&Apache::grades::get_fields();
                   1216:     $r->print('<h3>Creating Slots</h3>');
                   1217:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
                   1218:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
                   1219:     my $countdone=0;
1.31      albertel 1220:     my @errors;
1.14      albertel 1221:     foreach my $slot (@slotdata) {
                   1222: 	my %slot;
                   1223: 	my %entries=&Apache::loncommon::record_sep($slot);
                   1224: 	my $domain;
                   1225: 	my $name=$entries{$fields{'name'}};
1.31      albertel 1226: 	if ($name=~/^\s*$/) {
                   1227: 	    push(@errors,"Did not create slot with no name");
                   1228: 	    next;
                   1229: 	}
                   1230: 	if ($name=~/\s/) { 
                   1231: 	    push(@errors,"$name not created -- Name must not contain spaces");
                   1232: 	    next;
                   1233: 	}
                   1234: 	if ($name=~/\W/) { 
                   1235: 	    push(@errors,"$name not created -- Name must contain only letters, numbers and _");
                   1236: 	    next;
                   1237: 	}
1.14      albertel 1238: 	if ($entries{$fields{'type'}}) {
                   1239: 	    $slot{'type'}=$entries{$fields{'type'}};
                   1240: 	} else {
                   1241: 	    $slot{'type'}='preassigned';
                   1242: 	}
1.31      albertel 1243: 	if ($slot{'type'} ne 'preassigned' &&
                   1244: 	    $slot{'type'} ne 'schedulable_student') {
                   1245: 	    push(@errors,"$name not created -- invalid type ($slot{'type'}) must be either preassigned or schedulable_student");
                   1246: 	    next;
                   1247: 	}
1.14      albertel 1248: 	if ($entries{$fields{'starttime'}}) {
                   1249: 	    $slot{'starttime'}=&UnixDate($entries{$fields{'starttime'}},"%s");
                   1250: 	}
                   1251: 	if ($entries{$fields{'endtime'}}) {
1.16      albertel 1252: 	    $slot{'endtime'}=&UnixDate($entries{$fields{'endtime'}},"%s");
1.14      albertel 1253: 	}
1.23      albertel 1254: 	if ($entries{$fields{'startreserve'}}) {
                   1255: 	    $slot{'startreserve'}=
                   1256: 		&UnixDate($entries{$fields{'startreserve'}},"%s");
                   1257: 	}
1.14      albertel 1258: 	foreach my $key ('ip','proctor','description','maxspace',
                   1259: 			 'secret','symb') {
                   1260: 	    if ($entries{$fields{$key}}) {
                   1261: 		$slot{$key}=$entries{$fields{$key}};
                   1262: 	    }
                   1263: 	}
                   1264: 	if ($entries{$fields{'uniqueperiod'}}) {
                   1265: 	    my ($start,$end)=split(',',$entries{$fields{'uniqueperiod'}});
                   1266: 	    my @times=(&UnixDate($start,"%s"),
                   1267: 		       &UnixDate($end,"%s"));
                   1268: 	    $slot{'uniqueperiod'}=\@times;
                   1269: 	}
                   1270: 
                   1271: 	&Apache::lonnet::cput('slots',{$name=>\%slot},$cdom,$cname);
                   1272: 	$r->print('.');
                   1273: 	$r->rflush();
                   1274: 	$countdone++;
                   1275:     }
1.31      albertel 1276:     $r->print("<p>Created $countdone slots\n</p>");
                   1277:     foreach my $error (@errors) {
                   1278: 	$r->print("<p>$error\n</p>");
                   1279:     }
1.19      albertel 1280:     &show_table($r,$mgr);
1.14      albertel 1281:     return '';
                   1282: }
                   1283: 
1.1       albertel 1284: sub handler {
                   1285:     my $r=shift;
                   1286: 
1.30      albertel 1287:     &Apache::loncommon::content_type($r,'text/html');
                   1288:     &Apache::loncommon::no_cache($r);
                   1289:     if ($r->header_only()) {
                   1290: 	$r->send_http_header();
                   1291: 	return OK;
                   1292:     }
                   1293: 
1.8       albertel 1294:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
1.28      albertel 1295:     
1.12      albertel 1296:     my $vgr=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.14      albertel 1297:     my $mgr=&Apache::lonnet::allowed('mgr',$env{'request.course.id'});
1.28      albertel 1298:     my $title='Requesting Another Worktime';
                   1299:     if ($env{'form.command'} =~ /^(showslots|uploadstart|csvuploadmap|csvuploadassign)$/ && $vgr eq 'F') {
                   1300: 	$title = 'Managing Slots';
                   1301:     }
                   1302:     &start_page($r,$title);
                   1303: 
1.8       albertel 1304:     if ($env{'form.command'} eq 'showslots' && $vgr eq 'F') {
1.19      albertel 1305: 	&show_table($r,$mgr);
1.33      albertel 1306:     } elsif ($env{'form.command'} eq 'remove_registration' && $mgr eq 'F') {
                   1307: 	&remove_registration($r);
                   1308:     } elsif ($env{'form.command'} eq 'release' && $mgr eq 'F') {
                   1309: 	&release_slot($r,undef,undef,undef,$mgr);
1.34      albertel 1310:     } elsif ($env{'form.command'} eq 'delete' && $mgr eq 'F') {
                   1311: 	&delete_slot($r);
1.14      albertel 1312:     } elsif ($env{'form.command'} eq 'uploadstart' && $mgr eq 'F') {
1.19      albertel 1313: 	&upload_start($r);
1.14      albertel 1314:     } elsif ($env{'form.command'} eq 'csvuploadmap' && $mgr eq 'F') {
1.19      albertel 1315: 	&csv_upload_map($r);
1.14      albertel 1316:     } elsif ($env{'form.command'} eq 'csvuploadassign' && $mgr eq 'F') {
                   1317: 	if ($env{'form.associate'} ne 'Reverse Association') {
1.19      albertel 1318: 	    &csv_upload_assign($r,$mgr);
1.14      albertel 1319: 	} else {
                   1320: 	    if ( $env{'form.upfile_associate'} ne 'reverse' ) {
                   1321: 		$env{'form.upfile_associate'} = 'reverse';
                   1322: 	    } else {
                   1323: 		$env{'form.upfile_associate'} = 'forward';
                   1324: 	    }
1.19      albertel 1325: 	    &csv_upload_map($r);
1.14      albertel 1326: 	}
1.8       albertel 1327:     } else {
1.19      albertel 1328: 	my $symb=&Apache::lonnet::unescape($env{'form.symb'});
                   1329: 	my (undef,undef,$res)=&Apache::lonnet::decode_symb($symb);
1.36      albertel 1330: 	my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
                   1331: 	if ($useslots ne 'resource') {
1.19      albertel 1332: 	    &fail($r,'not_valid');
                   1333: 	    return OK;
                   1334: 	}
                   1335: 	$env{'request.symb'}=$symb;
1.36      albertel 1336: 	my $type = ($res =~ /\.task$/) ? 'Task'
                   1337: 	                               : 'problem';
                   1338: 	my ($status) = &Apache::lonhomework::check_slot_access('0',$type);
1.11      albertel 1339: 	if ($status eq 'CAN_ANSWER' ||
                   1340: 	    $status eq 'NEEDS_CHECKIN' ||
                   1341: 	    $status eq 'WAITING_FOR_GRADE') {
                   1342: 	    &fail($r,'not_allowed');
                   1343: 	    return OK;
                   1344: 	}
                   1345: 	if ($env{'form.requestattempt'}) {
                   1346: 	    &show_choices($r,$symb);
                   1347: 	} elsif ($env{'form.command'} eq 'release') {
                   1348: 	    &release_slot($r,$symb);
                   1349: 	} elsif ($env{'form.command'} eq 'get') {
                   1350: 	    &get_slot($r,$symb);
                   1351: 	} elsif ($env{'form.command'} eq 'change') {
1.39      albertel 1352: 	    if (&release_slot($r,$symb,$env{'form.releaseslot'},1)) {
                   1353: 		&get_slot($r,$symb);
                   1354: 	    }
1.11      albertel 1355: 	} else {
                   1356: 	    $r->print("<p>Unknown command: ".$env{'form.command'}."</p>");
                   1357: 	}
1.2       albertel 1358:     }
1.1       albertel 1359:     &end_page($r);
                   1360:     return OK;
                   1361: }
1.3       albertel 1362: 
                   1363: 1;
                   1364: __END__

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