1 package stemmaweb::Controller::Root;
3 use namespace::autoclean;
7 use XML::LibXML::XPathContext;
10 BEGIN { extends 'Catalyst::Controller' }
13 # Sets the actions in this controller to be registered with no prefix
14 # so they function identically to actions created in MyApp.pm
16 __PACKAGE__->config(namespace => '');
20 stemmaweb::Controller::Root - Root Controller for stemmaweb
24 Serves up the main container pages.
30 The root page (/). Serves the main container page, from which the various
31 components will be loaded.
35 sub index :Path :Args(0) {
36 my ( $self, $c ) = @_;
38 # Are we being asked to load a text immediately? If so
39 if( $c->req->param('withtradition') ) {
40 $c->stash->{'withtradition'} = $c->req->param('withtradition');
42 $c->stash->{template} = 'index.tt';
47 A general overview/documentation page for the site.
51 sub about :Local :Args(0) {
53 $c->stash->{template} = 'about.tt';
58 A dispatcher for documentation of various aspects of the application.
62 sub help :Local :Args(1) {
63 my( $self, $c, $topic ) = @_;
64 $c->stash->{template} = "$topic.tt";
67 =head1 Elements of index page
73 Serves a snippet of HTML that lists the available texts. This returns texts belonging to the logged-in user if any, otherwise it returns all public texts.
77 sub directory :Local :Args(0) {
79 my $m = $c->model('Directory');
80 # Is someone logged in?
82 if( $c->user_exists ) {
83 my $user = $c->user->get_object;
84 my @list = $m->traditionlist( $user );
85 map { $usertexts{$_->{id}} = 1 } @list;
86 $c->stash->{usertexts} = \@list;
87 $c->stash->{is_admin} = 1 if $user->is_admin;
89 # List public (i.e. readonly) texts separately from any user (i.e.
90 # full access) texts that exist. Admin users therefore have nothing
92 my @plist = grep { !$usertexts{$_->{id}} } $m->traditionlist('public');
93 $c->stash->{publictexts} = \@plist;
94 $c->stash->{template} = 'directory.tt';
97 =head1 AJAX methods for traditions and their properties
103 language: <language>,
107 Creates a new tradition belonging to the logged-in user, with the given name
108 and the collation given in the uploaded file. The file type is indicated via
109 the filename extension (.csv, .txt, .xls, .xlsx, .xml). Returns the ID and
110 name of the new tradition.
114 sub newtradition :Local :Args(0) {
115 my( $self, $c ) = @_;
116 return _json_error( $c, 403, 'Cannot save a tradition without being logged in' )
117 unless $c->user_exists;
119 my $user = $c->user->get_object;
120 # Grab the file upload, check its name/extension, and call the
121 # appropriate parser(s).
122 my $upload = $c->request->upload('file');
123 my $name = $c->request->param('name') || 'Uploaded tradition';
124 my $lang = $c->request->param( 'language' ) || 'Default';
125 my $public = $c->request->param( 'public' ) ? 1 : undef;
126 my $direction = $c->request->param('direction') || 'LR';
128 my( $ext ) = $upload->filename =~ /\.(\w+)$/;
133 'file' => $upload->tempname,
134 'direction' => $direction,
139 if( $ext eq 'xml' ) {
141 # Parse the XML to see which flavor it is.
142 my $parser = XML::LibXML->new();
145 $doc = $parser->parse_file( $newopts{'file'} );
147 $errmsg = "XML file parsing error: $err";
150 if( $doc->documentElement->nodeName eq 'graphml' ) {
152 } elsif( $doc->documentElement->nodeName ne 'TEI' ) {
153 $errmsg = 'Unrecognized XML type ' . $doc->documentElement->nodeName;
155 my $xpc = XML::LibXML::XPathContext->new( $doc->documentElement );
156 my $venc = $xpc->findvalue( '/TEI/teiHeader/encodingDesc/variantEncoding/attribute::method' );
157 if( $venc && $venc eq 'double-end-point' ) {
164 # Try the relevant XML parsing option.
166 delete $newopts{'file'};
167 $newopts{'xmlobj'} = $doc;
169 $tradition = Text::Tradition->new( %newopts, 'input' => $type );
170 } catch ( Text::Tradition::Error $e ) {
171 $errmsg = $e->message;
173 $errmsg = "Unexpected parsing error: $e";
176 } elsif( $ext =~ /^(txt|csv|xls(x)?)$/ ) {
177 # If it's Excel we need to pass excel => $ext;
178 # otherwise we need to pass sep_char => [record separator].
179 if( $ext =~ /xls/ ) {
180 $newopts{'excel'} = $ext;
182 $newopts{'sep_char'} = $ext eq 'txt' ? "\t" : ',';
185 $tradition = Text::Tradition->new(
187 'input' => 'Tabular',
189 } catch ( Text::Tradition::Error $e ) {
190 $errmsg = $e->message;
192 $errmsg = "Unexpected parsing error: $e";
195 # Error unless we have a recognized filename extension
196 return _json_error( $c, 403, "Unrecognized file type extension $ext" );
199 # Save the tradition if we have it, and return its data or else the
200 # error that occurred trying to make it.
202 return _json_error( $c, 500, "Error parsing tradition .$ext file: $errmsg" );
203 } elsif( !$tradition ) {
204 return _json_error( $c, 500, "No error caught but tradition not created" );
207 my $m = $c->model('Directory');
208 $user->add_tradition( $tradition );
209 my $id = $c->model('Directory')->store( $tradition );
210 $c->model('Directory')->store( $user );
211 $c->stash->{'result'} = { 'id' => $id, 'name' => $tradition->name };
212 $c->forward('View::JSON');
217 GET /textinfo/$textid
218 POST /textinfo/$textid,
220 language: $new_language,
222 owner: $new_userid } # only admin users can update the owner
224 Returns information about a particular text.
228 sub textinfo :Local :Args(1) {
229 my( $self, $c, $textid ) = @_;
230 my $tradition = $c->model('Directory')->tradition( $textid );
231 ## Have to keep users in the same scope as tradition
234 unless( $tradition ) {
235 return _json_error( $c, 404, "No tradition with ID $textid" );
237 my $ok = _check_permission( $c, $tradition );
239 if( $c->req->method eq 'POST' ) {
240 return _json_error( $c, 403,
241 'You do not have permission to update this tradition' )
242 unless $ok eq 'full';
243 my $params = $c->request->parameters;
244 # Handle changes to owner-accessible parameters
245 my $m = $c->model('Directory');
247 # Handle name param - easy
248 if( exists $params->{name} ) {
249 my $newname = delete $params->{name};
250 unless( $tradition->name eq $newname ) {
252 $tradition->name( $newname );
255 return _json_error( $c, 500, "Error setting name to $newname: $@" );
259 # Handle language param, making Default => null
260 my $langval = delete $params->{language} || 'Default';
262 unless( $tradition->language eq $langval || !$tradition->can('language') ) {
264 $tradition->language( $langval );
267 return _json_error( $c, 500, "Error setting language to $langval: $@" );
272 my $ispublic = $tradition->public;
273 if( delete $params->{'public'} ) { # if it's any true value...
274 $tradition->public( 1 );
275 $changed = 1 unless $ispublic;
276 } else { # the checkbox was unchecked, ergo it should not be public
277 $tradition->public( 0 );
278 $changed = 1 if $ispublic;
281 # Handle ownership change
282 if( exists $params->{'owner'} ) {
283 # Only admins can update user / owner
284 my $newownerid = delete $params->{'owner'};
285 if( $tradition->has_user && !$tradition->user ) {
286 $tradition->clear_user;
288 unless( !$newownerid ||
289 ( $tradition->has_user && $tradition->user->email eq $newownerid ) ) {
290 unless( $c->user->get_object->is_admin ) {
291 return _json_error( $c, 403,
292 "Only admin users can change tradition ownership" );
294 $newuser = $m->find_user({ email => $newownerid });
296 return _json_error( $c, 500, "No such user " . $newownerid );
298 if( $tradition->has_user ) {
299 $olduser = $tradition->user;
300 $olduser->remove_tradition( $tradition );
302 $newuser->add_tradition( $tradition );
306 # TODO check for rogue parameters
307 if( scalar keys %$params ) {
308 my $rogueparams = join( ', ', keys %$params );
309 return _json_error( $c, 403, "Request parameters $rogueparams not recognized" );
311 # If we safely got to the end, then write to the database.
312 $m->save( $tradition ) if $changed;
313 $m->save( $newuser ) if $newuser;
316 # Now return the current textinfo, whether GET or successful POST.
319 name => $tradition->name,
320 public => $tradition->public || 0,
321 owner => $tradition->user ? $tradition->user->email : undef,
322 witnesses => [ map { $_->sigil } $tradition->witnesses ],
323 # TODO Send them all with appropriate parameters so that the
324 # client side can choose what to display.
325 reltypes => [ map { $_->name } grep { !$_->is_weak && $_->is_colocation }
326 $tradition->collation->relationship_types ]
328 ## TODO Make these into callbacks in the other controllers maybe?
329 if( $tradition->can('language') ) {
330 $textinfo->{'language'} = $tradition->language;
332 if( $tradition->can('stemweb_jobid') ) {
333 $textinfo->{'stemweb_jobid'} = $tradition->stemweb_jobid || 0;
335 my @stemmasvg = map { _stemma_info( $_ ) } $tradition->stemmata;
336 $textinfo->{stemmata} = \@stemmasvg;
337 $c->stash->{'result'} = $textinfo;
338 $c->forward('View::JSON');
343 GET /variantgraph/$textid
345 Returns the variant graph for the text specified at $textid, in SVG form.
349 sub variantgraph :Local :Args(1) {
350 my( $self, $c, $textid ) = @_;
351 my $tradition = $c->model('Directory')->tradition( $textid );
352 unless( $tradition ) {
353 return _json_error( $c, 404, "No tradition with ID $textid" );
355 my $ok = _check_permission( $c, $tradition );
358 my $collation = $tradition->collation;
359 $c->stash->{'result'} = $collation->as_svg;
360 $c->forward('View::SVG');
364 my( $stemma, $sid ) = @_;
365 my $ssvg = $stemma->as_svg();
368 name => $stemma->identifier,
369 directed => _json_bool( !$stemma->is_undirected ),
372 $sinfo->{stemmaid} = $sid;
377 ## TODO Separate stemma manipulation functionality into its own controller.
381 GET /stemma/$textid/$stemmaseq
382 POST /stemma/$textid/$stemmaseq, { 'dot' => $dot_string }
384 Returns an SVG representation of the given stemma hypothesis for the text.
385 If the URL is called with POST, the stemma at $stemmaseq will be altered
386 to reflect the definition in $dot_string. If $stemmaseq is 'n', a new
387 stemma will be added.
391 sub stemma :Local :Args(2) {
392 my( $self, $c, $textid, $stemmaid ) = @_;
393 my $m = $c->model('Directory');
394 my $tradition = $m->tradition( $textid );
395 unless( $tradition ) {
396 return _json_error( $c, 404, "No tradition with ID $textid" );
398 my $ok = _check_permission( $c, $tradition );
401 $c->stash->{'result'} = '';
403 if( $c->req->method eq 'POST' ) {
404 if( $ok eq 'full' ) {
405 my $dot = $c->request->body_params->{'dot'};
407 if( $stemmaid eq 'n' ) {
408 # We are adding a new stemma.
409 $stemmaid = $tradition->stemma_count;
410 $stemma = $tradition->add_stemma( 'dot' => $dot );
411 } elsif( $stemmaid !~ /^\d+$/ ) {
412 return _json_error( $c, 403, "Invalid stemma ID specification $stemmaid" );
413 } elsif( $stemmaid < $tradition->stemma_count ) {
414 # We are updating an existing stemma.
415 $stemma = $tradition->stemma( $stemmaid );
416 $stemma->alter_graph( $dot );
418 # Unrecognized stemma ID
419 return _json_error( $c, 404, "No stemma at index $stemmaid, cannot update" );
421 } catch ( Text::Tradition::Error $e ) {
422 return _json_error( $c, 500, $e->message );
424 $m->store( $tradition );
426 # No permissions to update the stemma
427 return _json_error( $c, 403,
428 'You do not have permission to update stemmata for this tradition' );
432 # For a GET or a successful POST request, return the SVG representation
433 # of the stemma in question, if any.
434 if( !$stemma && $tradition->stemma_count > $stemmaid ) {
435 $stemma = $tradition->stemma( $stemmaid );
437 # What was requested, XML or JSON?
438 my $return_view = 'SVG';
439 if( my $accept_header = $c->req->header('Accept') ) {
440 $c->log->debug( "Received Accept header: $accept_header" );
441 foreach my $type ( split( /,\s*/, $accept_header ) ) {
442 # If we were first asked for XML, return SVG
443 last if $type =~ /^(application|text)\/xml$/;
444 # If we were first asked for JSON, return JSON
445 if( $type eq 'application/json' ) {
446 $return_view = 'JSON';
451 if( $return_view eq 'SVG' ) {
452 $c->stash->{'result'} = $stemma->as_svg();
453 $c->forward('View::SVG');
455 $c->stash->{'result'} = _stemma_info( $stemma, $stemmaid );
456 $c->forward('View::JSON');
462 GET /stemmadot/$textid/$stemmaseq
464 Returns the 'dot' format representation of the current stemma hypothesis.
468 sub stemmadot :Local :Args(2) {
469 my( $self, $c, $textid, $stemmaid ) = @_;
470 my $m = $c->model('Directory');
471 my $tradition = $m->tradition( $textid );
472 unless( $tradition ) {
473 return _json_error( $c, 404, "No tradition with ID $textid" );
475 my $ok = _check_permission( $c, $tradition );
477 my $stemma = $tradition->stemma( $stemmaid );
479 return _json_error( $c, 404, "Tradition $textid has no stemma ID $stemmaid" );
481 # Get the dot and transmute its line breaks to literal '|n'
482 $c->stash->{'result'} = { 'dot' => $stemma->editable( { linesep => '|n' } ) };
483 $c->forward('View::JSON');
488 POST /stemmaroot/$textid/$stemmaseq, { root: <root node ID> }
490 Orients the given stemma so that the given node is the root (archetype). Returns the
491 information structure for the new stemma.
495 sub stemmaroot :Local :Args(2) {
496 my( $self, $c, $textid, $stemmaid ) = @_;
497 my $m = $c->model('Directory');
498 my $tradition = $m->tradition( $textid );
499 unless( $tradition ) {
500 return _json_error( $c, 404, "No tradition with ID $textid" );
502 my $ok = _check_permission( $c, $tradition );
503 if( $ok eq 'full' ) {
504 my $stemma = $tradition->stemma( $stemmaid );
506 $stemma->root_graph( $c->req->param('root') );
507 $m->save( $tradition );
508 } catch( Text::Tradition::Error $e ) {
509 return _json_error( $c, 400, $e->message );
511 return _json_error( $c, 500, "Error re-rooting stemma: $@" );
513 $c->stash->{'result'} = _stemma_info( $stemma );
514 $c->forward('View::JSON');
516 return _json_error( $c, 403,
517 'You do not have permission to update stemmata for this tradition' );
523 GET /download/$textid/$format
525 Returns a file for download of the tradition in the requested format.
529 sub download :Local :Args(2) {
530 my( $self, $c, $textid, $format ) = @_;
531 my $tradition = $c->model('Directory')->tradition( $textid );
532 unless( $tradition ) {
533 return _json_error( $c, 404, "No tradition with ID $textid" );
535 my $ok = _check_permission( $c, $tradition );
538 my $outmethod = "as_" . lc( $format );
539 my $view = "View::$format";
540 $c->stash->{'name'} = $tradition->name();
541 $c->stash->{'download'} = 1;
543 if( $format eq 'SVG' ) {
544 # Send the list of colors through to the backend.
545 # TODO Think of some way not to hard-code this.
546 push( @outputargs, { 'show_relations' => 'all',
547 'graphcolors' => [ "#5CCCCC", "#67E667", "#F9FE72", "#6B90D4",
548 "#FF7673", "#E467B3", "#AA67D5", "#8370D8", "#FFC173" ] } );
551 $c->stash->{'result'} = $tradition->collation->$outmethod( @outputargs );
552 } catch( Text::Tradition::Error $e ) {
553 return _json_error( $c, 500, $e->message );
555 $c->forward( $view );
562 # Helper to check what permission, if any, the active user has for
563 # the given tradition
564 sub _check_permission {
565 my( $c, $tradition ) = @_;
566 my $user = $c->user_exists ? $c->user->get_object : undef;
568 return 'full' if ( $user->is_admin ||
569 ( $tradition->has_user && $tradition->user->id eq $user->id ) );
571 # Text doesn't belong to us, so maybe it's public?
572 return 'readonly' if $tradition->public;
574 # ...nope. Forbidden!
575 return _json_error( $c, 403, 'You do not have permission to view this tradition.' );
578 # Helper to throw a JSON exception
580 my( $c, $code, $errmsg ) = @_;
581 $c->response->status( $code );
582 $c->stash->{'result'} = { 'error' => $errmsg };
583 $c->forward('View::JSON');
588 return $_[0] ? JSON::true : JSON::false;
593 Standard 404 error page
598 my ( $self, $c ) = @_;
599 $c->response->body( 'Page not found' );
600 $c->response->status(404);
605 Attempt to render a view, if needed.
609 sub end : ActionClass('RenderView') {}
617 This library is free software. You can redistribute it and/or modify
618 it under the same terms as Perl itself.
622 __PACKAGE__->meta->make_immutable;