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).
110 my $upload = $c->request->upload('file');
111 my $name = $c->request->param('name') || 'Uploaded tradition';
112 my $lang = $c->request->param( 'language' ) || 'Default';
113 my $public = $c->request->param( 'public' ) ? 1 : undef;
114 my( $ext ) = $upload->filename =~ /\.(\w+)$/;
119 'file' => $upload->tempname
124 if( $ext eq 'xml' ) {
125 # Try the different XML parsing options to see if one works.
126 foreach my $type ( qw/ CollateX CTE TEI / ) {
128 $tradition = Text::Tradition->new( %newopts, 'input' => $type );
129 } catch ( Text::Tradition::Error $e ) {
130 $errmsg = $e->message;
132 $errmsg = "Unexpected parsing error";
139 } elsif( $ext =~ /^(txt|csv|xls(x)?)$/ ) {
140 # If it's Excel we need to pass excel => $ext;
141 # otherwise we need to pass sep_char => [record separator].
142 if( $ext =~ /xls/ ) {
143 $newopts{'excel'} = $ext;
145 $newopts{'sep_char'} = $ext eq 'txt' ? "\t" : ',';
148 $tradition = Text::Tradition->new(
150 'input' => 'Tabular',
152 } catch ( Text::Tradition::Error $e ) {
153 $errmsg = $e->message;
155 $errmsg = "Unexpected parsing error";
158 # Error unless we have a recognized filename extension
159 return _json_error( $c, 403, "Unrecognized file type extension $ext" );
162 # Save the tradition if we have it, and return its data or else the
163 # error that occurred trying to make it.
165 return _json_error( $c, 500, "Error parsing tradition .$ext file: $errmsg" );
166 } elsif( !$tradition ) {
167 return _json_error( $c, 500, "No error caught but tradition not created" );
170 my $m = $c->model('Directory');
171 $user->add_tradition( $tradition );
172 my $id = $c->model('Directory')->store( $tradition );
173 $c->model('Directory')->store( $user );
174 $c->stash->{'result'} = { 'id' => $id, 'name' => $tradition->name };
175 $c->forward('View::JSON');
180 GET /textinfo/$textid
181 POST /textinfo/$textid,
183 language: $new_language,
185 owner: $new_userid } # only admin users can update the owner
187 Returns information about a particular text.
191 sub textinfo :Local :Args(1) {
192 my( $self, $c, $textid ) = @_;
193 my $tradition = $c->model('Directory')->tradition( $textid );
194 unless( $tradition ) {
195 return _json_error( $c, 404, "No tradition with ID $textid" );
197 my $ok = _check_permission( $c, $tradition );
199 if( $c->req->method eq 'POST' ) {
200 return _json_error( $c, 403,
201 'You do not have permission to update this tradition' )
202 unless $ok eq 'full';
203 my $params = $c->request->parameters;
204 # Handle changes to owner-accessible parameters
205 my $m = $c->model('Directory');
207 # Handle name param - easy
208 if( exists $params->{name} ) {
209 my $newname = delete $params->{name};
210 unless( $tradition->name eq $newname ) {
212 $tradition->name( $newname );
215 return _json_error( $c, 500, "Error setting name to $newname" );
219 # Handle language param, making Default => null
220 my $langval = delete $params->{language} || 'Default';
221 unless( $tradition->language eq $langval ) {
223 $tradition->language( $langval );
226 return _json_error( $c, 500, "Error setting language to $langval" );
231 my $ispublic = $tradition->public;
232 if( delete $params->{'public'} ) { # if it's any true value...
233 $tradition->public( 1 );
234 $changed = 1 unless $ispublic;
235 } else { # the checkbox was unchecked, ergo it should not be public
236 $tradition->public( 0 );
237 $changed = 1 if $ispublic;
240 # Handle ownership change
242 if( exists $params->{'owner'} ) {
243 # Only admins can update user / owner
244 my $newownerid = delete $params->{'owner'};
245 unless( !$newownerid ||
246 ( $tradition->has_user && $tradition->user->id eq $newownerid ) ) {
247 unless( $c->user->get_object->is_admin ) {
248 return _json_error( $c, 403,
249 "Only admin users can change tradition ownership" );
251 $newuser = $m->find_user({ username => $newownerid });
253 return _json_error( $c, 500, "No such user " . $newownerid );
255 $newuser->add_tradition( $tradition );
259 # TODO check for rogue parameters
260 if( scalar keys %$params ) {
261 my $rogueparams = join( ', ', keys %$params );
262 return _json_error( $c, 403, "Request parameters $rogueparams not recognized" );
264 # If we safely got to the end, then write to the database.
265 $m->save( $tradition ) if $changed;
266 $m->save( $newuser ) if $newuser;
269 # Now return the current textinfo, whether GET or successful POST.
272 name => $tradition->name,
273 language => $tradition->language,
274 public => $tradition->public || 0,
275 owner => $tradition->user ? $tradition->user->email : undef,
276 witnesses => [ map { $_->sigil } $tradition->witnesses ],
278 my @stemmasvg = map { $_->as_svg() } $tradition->stemmata;
279 map { $_ =~ s/\n/ /mg } @stemmasvg;
280 $textinfo->{stemmata} = \@stemmasvg;
281 $c->stash->{'result'} = $textinfo;
282 $c->forward('View::JSON');
287 GET /variantgraph/$textid
289 Returns the variant graph for the text specified at $textid, in SVG form.
293 sub variantgraph :Local :Args(1) {
294 my( $self, $c, $textid ) = @_;
295 my $tradition = $c->model('Directory')->tradition( $textid );
296 unless( $tradition ) {
297 return _json_error( $c, 404, "No tradition with ID $textid" );
299 my $ok = _check_permission( $c, $tradition );
302 my $collation = $tradition->collation;
303 $c->stash->{'result'} = $collation->as_svg;
304 $c->forward('View::SVG');
309 GET /stemma/$textid/$stemmaseq
310 POST /stemma/$textid/$stemmaseq, { 'dot' => $dot_string }
312 Returns an SVG representation of the given stemma hypothesis for the text.
313 If the URL is called with POST, the stemma at $stemmaseq will be altered
314 to reflect the definition in $dot_string. If $stemmaseq is 'n', a new
315 stemma will be added.
319 sub stemma :Local :Args(2) {
320 my( $self, $c, $textid, $stemmaid ) = @_;
321 my $m = $c->model('Directory');
322 my $tradition = $m->tradition( $textid );
323 unless( $tradition ) {
324 return _json_error( $c, 404, "No tradition with ID $textid" );
326 my $ok = _check_permission( $c, $tradition );
329 $c->stash->{'result'} = '';
331 if( $c->req->method eq 'POST' ) {
332 if( $ok eq 'full' ) {
333 my $dot = $c->request->body_params->{'dot'};
335 if( $stemmaid eq 'n' ) {
336 # We are adding a new stemma.
337 $stemmaid = $tradition->stemma_count;
338 $stemma = $tradition->add_stemma( 'dot' => $dot );
339 } elsif( $stemmaid !~ /^\d+$/ ) {
340 return _json_error( $c, 403, "Invalid stemma ID specification $stemmaid" );
341 } elsif( $stemmaid < $tradition->stemma_count ) {
342 # We are updating an existing stemma.
343 $stemma = $tradition->stemma( $stemmaid );
344 $stemma->alter_graph( $dot );
346 # Unrecognized stemma ID
347 return _json_error( $c, 404, "No stemma at index $stemmaid, cannot update" );
349 } catch ( Text::Tradition::Error $e ) {
350 return _json_error( $c, 500, $e->message );
352 $m->store( $tradition );
354 # No permissions to update the stemma
355 return _json_error( $c, 403,
356 'You do not have permission to update stemmata for this tradition' );
360 # For a GET or a successful POST request, return the SVG representation
361 # of the stemma in question, if any.
362 if( !$stemma && $tradition->stemma_count > $stemmaid ) {
363 $stemma = $tradition->stemma( $stemmaid );
365 my $stemma_xml = $stemma ? $stemma->as_svg() : '';
366 # What was requested, XML or JSON?
367 my $return_view = 'SVG';
368 if( my $accept_header = $c->req->header('Accept') ) {
369 $c->log->debug( "Received Accept header: $accept_header" );
370 foreach my $type ( split( /,\s*/, $accept_header ) ) {
371 # If we were first asked for XML, return SVG
372 last if $type =~ /^(application|text)\/xml$/;
373 # If we were first asked for JSON, return JSON
374 if( $type eq 'application/json' ) {
375 $return_view = 'JSON';
380 if( $return_view eq 'SVG' ) {
381 $c->stash->{'result'} = $stemma_xml;
382 $c->forward('View::SVG');
384 $stemma_xml =~ s/\n/ /mg;
385 $c->stash->{'result'} = { 'stemmaid' => $stemmaid, 'stemmasvg' => $stemma_xml };
386 $c->forward('View::JSON');
392 GET /stemmadot/$textid/$stemmaseq
394 Returns the 'dot' format representation of the current stemma hypothesis.
398 sub stemmadot :Local :Args(2) {
399 my( $self, $c, $textid, $stemmaid ) = @_;
400 my $m = $c->model('Directory');
401 my $tradition = $m->tradition( $textid );
402 unless( $tradition ) {
403 return _json_error( $c, 404, "No tradition with ID $textid" );
405 my $ok = _check_permission( $c, $tradition );
407 my $stemma = $tradition->stemma( $stemmaid );
409 return _json_error( $c, 404, "Tradition $textid has no stemma ID $stemmaid" );
411 # Get the dot and transmute its line breaks to literal '|n'
412 $c->stash->{'result'} = { 'dot' => $stemma->editable( { linesep => '|n' } ) };
413 $c->forward('View::JSON');
420 # Helper to check what permission, if any, the active user has for
421 # the given tradition
422 sub _check_permission {
423 my( $c, $tradition ) = @_;
424 my $user = $c->user_exists ? $c->user->get_object : undef;
426 return 'full' if ( $user->is_admin ||
427 ( $tradition->has_user && $tradition->user->id eq $user->id ) );
429 # Text doesn't belong to us, so maybe it's public?
430 return 'readonly' if $tradition->public;
432 # ...nope. Forbidden!
433 return _json_error( $c, 403, 'You do not have permission to view this tradition.' );
436 # Helper to throw a JSON exception
438 my( $c, $code, $errmsg ) = @_;
439 $c->response->status( $code );
440 $c->stash->{'result'} = { 'error' => $errmsg };
441 $c->forward('View::JSON');
447 Standard 404 error page
452 my ( $self, $c ) = @_;
453 $c->response->body( 'Page not found' );
454 $c->response->status(404);
459 Attempt to render a view, if needed.
463 sub end : ActionClass('RenderView') {}
471 This library is free software. You can redistribute it and/or modify
472 it under the same terms as Perl itself.
476 __PACKAGE__->meta->make_immutable;