1 package stemmaweb::Controller::Root;
3 use namespace::autoclean;
4 use Text::Tradition::Analysis qw/ run_analysis /;
8 BEGIN { extends 'Catalyst::Controller' }
11 # Sets the actions in this controller to be registered with no prefix
12 # so they function identically to actions created in MyApp.pm
14 __PACKAGE__->config(namespace => '');
18 stemmaweb::Controller::Root - Root Controller for stemmaweb
22 Serves up the main container pages.
28 The root page (/). Serves the main container page, from which the various
29 components will be loaded.
33 sub index :Path :Args(0) {
34 my ( $self, $c ) = @_;
36 # Are we being asked to load a text immediately? If so
37 if( $c->req->param('withtradition') ) {
38 $c->stash->{'withtradition'} = $c->req->param('withtradition');
40 $c->stash->{template} = 'index.tt';
45 A general overview/documentation page for the site.
49 sub about :Local :Args(0) {
51 $c->stash->{template} = 'about.tt';
54 =head1 Elements of index page
60 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.
64 sub directory :Local :Args(0) {
66 my $m = $c->model('Directory');
67 # Is someone logged in?
69 if( $c->user_exists ) {
70 my $user = $c->user->get_object;
71 my @list = $m->traditionlist( $user );
72 map { $usertexts{$_->{id}} = 1 } @list;
73 $c->stash->{usertexts} = \@list;
74 $c->stash->{is_admin} = 1 if $user->is_admin;
76 # List public (i.e. readonly) texts separately from any user (i.e.
77 # full access) texts that exist. Admin users therefore have nothing
79 my @plist = grep { !$usertexts{$_->{id}} } $m->traditionlist('public');
80 $c->stash->{publictexts} = \@plist;
81 $c->stash->{template} = 'directory.tt';
84 =head1 AJAX methods for traditions and their properties
94 Creates a new tradition belonging to the logged-in user, with the given name
95 and the collation given in the uploaded file. The file type is indicated via
96 the filename extension (.csv, .txt, .xls, .xlsx, .xml). Returns the ID and
97 name of the new tradition.
101 sub newtradition :Local :Args(0) {
102 my( $self, $c ) = @_;
103 return _json_error( $c, 403, 'Cannot save a tradition without being logged in' )
104 unless $c->user_exists;
106 my $user = $c->user->get_object;
107 # Grab the file upload, check its name/extension, and call the
108 # appropriate parser(s).
109 my $upload = $c->request->upload('file');
110 my $name = $c->request->param('name') || 'Uploaded tradition';
111 my $lang = $c->request->param( 'language' ) || 'Default';
112 my $public = $c->request->param( 'public' ) ? 1 : undef;
113 my( $ext ) = $upload->filename =~ /\.(\w+)$/;
118 'file' => $upload->tempname
123 if( $ext eq 'xml' ) {
124 # Try the different XML parsing options to see if one works.
125 foreach my $type ( qw/ CollateX CTE TEI / ) {
127 $tradition = Text::Tradition->new( %newopts, 'input' => $type );
128 } catch ( Text::Tradition::Error $e ) {
129 $errmsg = $e->message;
131 $errmsg = "Unexpected parsing error";
138 } elsif( $ext =~ /^(txt|csv|xls(x)?)$/ ) {
139 # If it's Excel we need to pass excel => $ext;
140 # otherwise we need to pass sep_char => [record separator].
141 if( $ext =~ /xls/ ) {
142 $newopts{'excel'} = $ext;
144 $newopts{'sep_char'} = $ext eq 'txt' ? "\t" : ',';
147 $tradition = Text::Tradition->new(
149 'input' => 'Tabular',
151 } catch ( Text::Tradition::Error $e ) {
152 $errmsg = $e->message;
154 $errmsg = "Unexpected parsing error";
157 # Error unless we have a recognized filename extension
158 return _json_error( $c, 403, "Unrecognized file type extension $ext" );
161 # Save the tradition if we have it, and return its data or else the
162 # error that occurred trying to make it.
164 return _json_error( $c, 500, "Error parsing tradition .$ext file: $errmsg" );
165 } elsif( !$tradition ) {
166 return _json_error( $c, 500, "No error caught but tradition not created" );
169 my $m = $c->model('Directory');
170 $user->add_tradition( $tradition );
171 my $id = $c->model('Directory')->store( $tradition );
172 $c->model('Directory')->store( $user );
173 $c->stash->{'result'} = { 'id' => $id, 'name' => $tradition->name };
174 $c->forward('View::JSON');
179 GET /textinfo/$textid
180 POST /textinfo/$textid,
182 language: $new_language,
184 owner: $new_userid } # only admin users can update the owner
186 Returns information about a particular text.
190 sub textinfo :Local :Args(1) {
191 my( $self, $c, $textid ) = @_;
192 my $tradition = $c->model('Directory')->tradition( $textid );
193 unless( $tradition ) {
194 return _json_error( $c, 404, "No tradition with ID $textid" );
196 my $ok = _check_permission( $c, $tradition );
198 if( $c->req->method eq 'POST' ) {
199 return _json_error( $c, 403,
200 'You do not have permission to update this tradition' )
201 unless $ok eq 'full';
202 my $params = $c->request->parameters;
203 # Handle changes to owner-accessible parameters
204 my $m = $c->model('Directory');
206 # Handle name param - easy
207 if( exists $params->{name} ) {
208 my $newname = delete $params->{name};
209 unless( $tradition->name eq $newname ) {
211 $tradition->name( $newname );
214 return _json_error( $c, 500, "Error setting name to $newname" );
218 # Handle language param, making Default => null
219 my $langval = delete $params->{language} || 'Default';
220 unless( $tradition->language eq $langval ) {
222 $tradition->language( $langval );
225 return _json_error( $c, 500, "Error setting language to $langval" );
230 my $ispublic = $tradition->public;
231 if( delete $params->{'public'} ) { # if it's any true value...
232 $tradition->public( 1 );
233 $changed = 1 unless $ispublic;
234 } else { # the checkbox was unchecked, ergo it should not be public
235 $tradition->public( 0 );
236 $changed = 1 if $ispublic;
239 # Handle ownership change
241 if( exists $params->{'owner'} ) {
242 # Only admins can update user / owner
243 my $newownerid = delete $params->{'owner'};
244 unless( !$newownerid ||
245 ( $tradition->has_user && $tradition->user->id eq $newownerid ) ) {
246 unless( $c->user->get_object->is_admin ) {
247 return _json_error( $c, 403,
248 "Only admin users can change tradition ownership" );
250 $newuser = $m->find_user({ username => $newownerid });
252 return _json_error( $c, 500, "No such user " . $newownerid );
254 $newuser->add_tradition( $tradition );
258 # TODO check for rogue parameters
259 if( scalar keys %$params ) {
260 my $rogueparams = join( ', ', keys %$params );
261 return _json_error( $c, 403, "Request parameters $rogueparams not recognized" );
263 # If we safely got to the end, then write to the database.
264 $m->save( $tradition ) if $changed;
265 $m->save( $newuser ) if $newuser;
268 # Now return the current textinfo, whether GET or successful POST.
271 name => $tradition->name,
272 language => $tradition->language,
273 public => $tradition->public,
274 owner => $tradition->user ? $tradition->user->id : undef,
275 witnesses => [ map { $_->sigil } $tradition->witnesses ],
277 my @stemmasvg = map { $_->as_svg() } $tradition->stemmata;
278 map { $_ =~ s/\n/ /mg } @stemmasvg;
279 $textinfo->{stemmata} = \@stemmasvg;
280 $c->stash->{'result'} = $textinfo;
281 $c->forward('View::JSON');
286 GET /variantgraph/$textid
288 Returns the variant graph for the text specified at $textid, in SVG form.
292 sub variantgraph :Local :Args(1) {
293 my( $self, $c, $textid ) = @_;
294 my $tradition = $c->model('Directory')->tradition( $textid );
295 unless( $tradition ) {
296 return _json_error( $c, 404, "No tradition with ID $textid" );
298 my $ok = _check_permission( $c, $tradition );
301 my $collation = $tradition->collation;
302 $c->stash->{'result'} = $collation->as_svg;
303 $c->forward('View::SVG');
308 GET /stemma/$textid/$stemmaseq
309 POST /stemma/$textid/$stemmaseq, { 'dot' => $dot_string }
311 Returns an SVG representation of the given stemma hypothesis for the text.
312 If the URL is called with POST, the stemma at $stemmaseq will be altered
313 to reflect the definition in $dot_string. If $stemmaseq is 'n', a new
314 stemma will be added.
318 sub stemma :Local :Args(2) {
319 my( $self, $c, $textid, $stemmaid ) = @_;
320 my $m = $c->model('Directory');
321 my $tradition = $m->tradition( $textid );
322 unless( $tradition ) {
323 return _json_error( $c, 404, "No tradition with ID $textid" );
325 my $ok = _check_permission( $c, $tradition );
328 $c->stash->{'result'} = '';
330 if( $c->req->method eq 'POST' ) {
331 if( $ok eq 'full' ) {
332 my $dot = $c->request->body_params->{'dot'};
334 if( $stemmaid eq 'n' ) {
335 # We are adding a new stemma.
336 $stemmaid = $tradition->stemma_count;
337 $stemma = $tradition->add_stemma( 'dot' => $dot );
338 } elsif( $stemmaid !~ /^\d+$/ ) {
339 return _json_error( $c, 403, "Invalid stemma ID specification $stemmaid" );
340 } elsif( $stemmaid < $tradition->stemma_count ) {
341 # We are updating an existing stemma.
342 $stemma = $tradition->stemma( $stemmaid );
343 $stemma->alter_graph( $dot );
345 # Unrecognized stemma ID
346 return _json_error( $c, 404, "No stemma at index $stemmaid, cannot update" );
348 } catch ( Text::Tradition::Error $e ) {
349 return _json_error( $c, 500, $e->message );
351 $m->store( $tradition );
353 # No permissions to update the stemma
354 return _json_error( $c, 403,
355 'You do not have permission to update stemmata for this tradition' );
359 # For a GET or a successful POST request, return the SVG representation
360 # of the stemma in question, if any.
361 if( !$stemma && $tradition->stemma_count > $stemmaid ) {
362 $stemma = $tradition->stemma( $stemmaid );
364 my $stemma_xml = $stemma ? $stemma->as_svg() : '';
365 # What was requested, XML or JSON?
366 my $return_view = 'SVG';
367 if( my $accept_header = $c->req->header('Accept') ) {
368 $c->log->debug( "Received Accept header: $accept_header" );
369 foreach my $type ( split( /,\s*/, $accept_header ) ) {
370 # If we were first asked for XML, return SVG
371 last if $type =~ /^(application|text)\/xml$/;
372 # If we were first asked for JSON, return JSON
373 if( $type eq 'application/json' ) {
374 $return_view = 'JSON';
379 if( $return_view eq 'SVG' ) {
380 $c->stash->{'result'} = $stemma_xml;
381 $c->forward('View::SVG');
383 $stemma_xml =~ s/\n/ /mg;
384 $c->stash->{'result'} = { 'stemmaid' => $stemmaid, 'stemmasvg' => $stemma_xml };
385 $c->forward('View::JSON');
391 GET /stemmadot/$textid/$stemmaseq
393 Returns the 'dot' format representation of the current stemma hypothesis.
397 sub stemmadot :Local :Args(2) {
398 my( $self, $c, $textid, $stemmaid ) = @_;
399 my $m = $c->model('Directory');
400 my $tradition = $m->tradition( $textid );
401 unless( $tradition ) {
402 return _json_error( $c, 404, "No tradition with ID $textid" );
404 my $ok = _check_permission( $c, $tradition );
406 my $stemma = $tradition->stemma( $stemmaid );
408 return _json_error( $c, 404, "Tradition $textid has no stemma ID $stemmaid" );
410 # Get the dot and transmute its line breaks to literal '|n'
411 $c->stash->{'result'} = { 'dot' => $stemma->editable( { linesep => '|n' } ) };
412 $c->forward('View::JSON');
419 # Helper to check what permission, if any, the active user has for
420 # the given tradition
421 sub _check_permission {
422 my( $c, $tradition ) = @_;
423 my $user = $c->user_exists ? $c->user->get_object : undef;
425 return 'full' if ( $user->is_admin ||
426 ( $tradition->has_user && $tradition->user->id eq $user->id ) );
428 # Text doesn't belong to us, so maybe it's public?
429 return 'readonly' if $tradition->public;
431 # ...nope. Forbidden!
432 return _json_error( $c, 403, 'You do not have permission to view this tradition.' );
435 # Helper to throw a JSON exception
437 my( $c, $code, $errmsg ) = @_;
438 $c->response->status( $code );
439 $c->stash->{'result'} = { 'error' => $errmsg };
440 $c->forward('View::JSON');
446 Standard 404 error page
451 my ( $self, $c ) = @_;
452 $c->response->body( 'Page not found' );
453 $c->response->status(404);
458 Attempt to render a view, if needed.
462 sub end : ActionClass('RenderView') {}
470 This library is free software. You can redistribute it and/or modify
471 it under the same terms as Perl itself.
475 __PACKAGE__->meta->make_immutable;