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b8a92065 |
1 | package stemmaweb::Controller::Root; |
2 | use Moose; |
3 | use namespace::autoclean; |
4 | use Text::Tradition::Analysis qw/ run_analysis /; |
41279a86 |
5 | use TryCatch; |
b8a92065 |
6 | |
7 | |
8 | BEGIN { extends 'Catalyst::Controller' } |
9 | |
10 | # |
11 | # Sets the actions in this controller to be registered with no prefix |
12 | # so they function identically to actions created in MyApp.pm |
13 | # |
14 | __PACKAGE__->config(namespace => ''); |
15 | |
16 | =head1 NAME |
17 | |
18 | stemmaweb::Controller::Root - Root Controller for stemmaweb |
19 | |
20 | =head1 DESCRIPTION |
21 | |
22 | Serves up the main container pages. |
23 | |
24 | =head1 URLs |
25 | |
26 | =head2 index |
27 | |
28 | The root page (/). Serves the main container page, from which the various |
29 | components will be loaded. |
30 | |
31 | =cut |
32 | |
33 | sub index :Path :Args(0) { |
34 | my ( $self, $c ) = @_; |
35 | |
c655153c |
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'); |
39 | } |
b8a92065 |
40 | $c->stash->{template} = 'index.tt'; |
41 | } |
42 | |
43 | =head1 Elements of index page |
44 | |
45 | =head2 directory |
46 | |
47 | GET /directory |
48 | |
70ccaf75 |
49 | 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. |
b8a92065 |
50 | |
51 | =cut |
70ccaf75 |
52 | |
b8a92065 |
53 | sub directory :Local :Args(0) { |
54 | my( $self, $c ) = @_; |
55 | my $m = $c->model('Directory'); |
69799996 |
56 | # Is someone logged in? |
98a45925 |
57 | my %usertexts; |
69799996 |
58 | if( $c->user_exists ) { |
59 | my $user = $c->user->get_object; |
98a45925 |
60 | my @list = $m->traditionlist( $user ); |
61 | map { $usertexts{$_->{id}} = 1 } @list; |
62 | $c->stash->{usertexts} = \@list; |
69799996 |
63 | $c->stash->{is_admin} = 1 if $user->is_admin; |
64 | } |
98a45925 |
65 | # List public (i.e. readonly) texts separately from any user (i.e. |
66 | # full access) texts that exist. Admin users therefore have nothing |
67 | # in this list. |
68 | my @plist = grep { !$usertexts{$_->{id}} } $m->traditionlist('public'); |
69 | $c->stash->{publictexts} = \@plist; |
b8a92065 |
70 | $c->stash->{template} = 'directory.tt'; |
71 | } |
72 | |
75354c3a |
73 | =head1 AJAX methods for traditions and their properties |
fb6e49b3 |
74 | |
75354c3a |
75 | =head2 newtradition |
76 | |
77 | POST /newtradition, |
78 | { name: <name>, |
79 | language: <language>, |
80 | public: <is_public>, |
81 | file: <fileupload> } |
fb6e49b3 |
82 | |
75354c3a |
83 | Creates a new tradition belonging to the logged-in user, with the given name |
84 | and the collation given in the uploaded file. The file type is indicated via |
85 | the filename extension (.csv, .txt, .xls, .xlsx, .xml). Returns the ID and |
86 | name of the new tradition. |
87 | |
88 | =cut |
89 | |
90 | sub newtradition :Local :Args(0) { |
91 | my( $self, $c ) = @_; |
92 | return _json_error( $c, 403, 'Cannot save a tradition without being logged in' ) |
93 | unless $c->user_exists; |
94 | |
95 | my $user = $c->user->get_object; |
96 | # Grab the file upload, check its name/extension, and call the |
97 | # appropriate parser(s). |
98 | my $upload = $c->request->upload('file'); |
99 | my $name = $c->request->param('name') || 'Uploaded tradition'; |
100 | my $lang = $c->request->param( 'language' ) || 'Default'; |
101 | my $public = $c->request->param( 'public' ) ? 1 : undef; |
102 | my( $ext ) = $upload->filename =~ /\.(\w+)$/; |
103 | my %newopts = ( |
104 | 'name' => $name, |
105 | 'language' => $lang, |
106 | 'public' => $public, |
107 | 'file' => $upload->tempname |
108 | ); |
109 | |
110 | my $tradition; |
111 | my $errmsg; |
112 | if( $ext eq 'xml' ) { |
113 | # Try the different XML parsing options to see if one works. |
114 | foreach my $type ( qw/ CollateX CTE TEI / ) { |
115 | try { |
116 | $tradition = Text::Tradition->new( %newopts, 'input' => $type ); |
117 | } catch ( Text::Tradition::Error $e ) { |
118 | $errmsg = $e->message; |
119 | } catch { |
120 | $errmsg = "Unexpected parsing error"; |
121 | } |
122 | last if $tradition; |
123 | } |
124 | } elsif( $ext =~ /^(txt|csv|xls(x)?)$/ ) { |
125 | # If it's Excel we need to pass excel => $ext; |
126 | # otherwise we need to pass sep_char => [record separator]. |
127 | if( $ext =~ /xls/ ) { |
128 | $newopts{'excel'} = $ext; |
129 | } else { |
130 | $newopts{'sep_char'} = $ext eq 'txt' ? "\t" : ','; |
131 | } |
132 | try { |
133 | $tradition = Text::Tradition->new( |
134 | %newopts, |
135 | 'input' => 'Tabular', |
136 | ); |
137 | } catch ( Text::Tradition::Error $e ) { |
138 | $errmsg = $e->message; |
139 | } catch { |
140 | $errmsg = "Unexpected parsing error"; |
141 | } |
142 | } else { |
143 | # Error unless we have a recognized filename extension |
2bfac197 |
144 | return _json_error( $c, 403, "Unrecognized file type extension $ext" ); |
75354c3a |
145 | } |
146 | |
147 | # Save the tradition if we have it, and return its data or else the |
148 | # error that occurred trying to make it. |
149 | if( $errmsg ) { |
150 | return _json_error( $c, 500, "Error parsing tradition .$ext file: $errmsg" ); |
151 | } elsif( !$tradition ) { |
152 | return _json_error( $c, 500, "No error caught but tradition not created" ); |
153 | } |
154 | |
155 | my $m = $c->model('Directory'); |
156 | $user->add_tradition( $tradition ); |
157 | my $id = $c->model('Directory')->store( $tradition ); |
158 | $c->model('Directory')->store( $user ); |
159 | $c->stash->{'result'} = { 'id' => $id, 'name' => $tradition->name }; |
160 | $c->forward('View::JSON'); |
161 | } |
162 | |
163 | =head2 textinfo |
164 | |
165 | GET /textinfo/$textid |
166 | POST /textinfo/$textid, |
167 | { name: $new_name, |
168 | language: $new_language, |
169 | public: $is_public, |
170 | owner: $new_userid } # only admin users can update the owner |
171 | |
172 | Returns information about a particular text. |
fb6e49b3 |
173 | |
174 | =cut |
175 | |
75354c3a |
176 | sub textinfo :Local :Args(1) { |
fb6e49b3 |
177 | my( $self, $c, $textid ) = @_; |
98a45925 |
178 | my $tradition = $c->model('Directory')->tradition( $textid ); |
75354c3a |
179 | unless( $tradition ) { |
2bfac197 |
180 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
181 | } |
41279a86 |
182 | my $ok = _check_permission( $c, $tradition ); |
183 | return unless $ok; |
75354c3a |
184 | if( $c->req->method eq 'POST' ) { |
185 | return _json_error( $c, 403, |
186 | 'You do not have permission to update this tradition' ) |
187 | unless $ok eq 'full'; |
188 | my $params = $c->request->parameters; |
189 | # Handle changes to owner-accessible parameters |
190 | my $m = $c->model('Directory'); |
191 | my $changed; |
ce1c5863 |
192 | # Handle name param - easy |
193 | if( exists $params->{name} ) { |
194 | my $newname = delete $params->{name}; |
195 | unless( $tradition->name eq $newname ) { |
196 | try { |
197 | $tradition->name( $newname ); |
75354c3a |
198 | $changed = 1; |
ce1c5863 |
199 | } catch { |
200 | return _json_error( $c, 500, "Error setting name to $newname" ); |
75354c3a |
201 | } |
202 | } |
203 | } |
ce1c5863 |
204 | # Handle language param, making Default => null |
205 | my $langval = delete $params->{language} || 'Default'; |
206 | unless( $tradition->language eq $langval ) { |
207 | try { |
208 | $tradition->language( $langval ); |
209 | $changed = 1; |
210 | } catch { |
211 | return _json_error( $c, 500, "Error setting language to $langval" ); |
212 | } |
213 | } |
214 | |
75354c3a |
215 | # Handle our boolean |
ce1c5863 |
216 | my $ispublic = $tradition->public; |
75354c3a |
217 | if( delete $params->{'public'} ) { # if it's any true value... |
218 | $tradition->public( 1 ); |
ce1c5863 |
219 | $changed = 1 unless $ispublic; |
220 | } else { # the checkbox was unchecked, ergo it should not be public |
221 | $tradition->public( 0 ); |
222 | $changed = 1 if $ispublic; |
75354c3a |
223 | } |
ce1c5863 |
224 | |
225 | # Handle ownership change |
75354c3a |
226 | my $newuser; |
227 | if( exists $params->{'owner'} ) { |
228 | # Only admins can update user / owner |
229 | my $newownerid = delete $params->{'owner'}; |
4f849eea |
230 | unless( !$newownerid || |
231 | ( $tradition->has_user && $tradition->user->id eq $newownerid ) ) { |
75354c3a |
232 | unless( $c->user->get_object->is_admin ) { |
233 | return _json_error( $c, 403, |
234 | "Only admin users can change tradition ownership" ); |
235 | } |
ce1c5863 |
236 | $newuser = $m->find_user({ username => $newownerid }); |
75354c3a |
237 | unless( $newuser ) { |
ce1c5863 |
238 | return _json_error( $c, 500, "No such user " . $newownerid ); |
75354c3a |
239 | } |
240 | $newuser->add_tradition( $tradition ); |
241 | $changed = 1; |
242 | } |
243 | } |
244 | # TODO check for rogue parameters |
245 | if( scalar keys %$params ) { |
246 | my $rogueparams = join( ', ', keys %$params ); |
247 | return _json_error( $c, 403, "Request parameters $rogueparams not recognized" ); |
248 | } |
249 | # If we safely got to the end, then write to the database. |
250 | $m->save( $tradition ) if $changed; |
251 | $m->save( $newuser ) if $newuser; |
252 | } |
41279a86 |
253 | |
75354c3a |
254 | # Now return the current textinfo, whether GET or successful POST. |
255 | my $textinfo = { |
256 | textid => $textid, |
257 | name => $tradition->name, |
258 | language => $tradition->language, |
259 | public => $tradition->public, |
260 | owner => $tradition->user ? $tradition->user->id : undef, |
261 | witnesses => [ map { $_->sigil } $tradition->witnesses ], |
262 | }; |
263 | my @stemmasvg = map { $_->as_svg({ size => [ 500, 375 ] }) } $tradition->stemmata; |
264 | map { $_ =~ s/\n/ /mg } @stemmasvg; |
265 | $textinfo->{stemmata} = \@stemmasvg; |
266 | $c->stash->{'result'} = $textinfo; |
267 | $c->forward('View::JSON'); |
fb6e49b3 |
268 | } |
b8a92065 |
269 | |
75354c3a |
270 | =head2 variantgraph |
b8a92065 |
271 | |
75354c3a |
272 | GET /variantgraph/$textid |
273 | |
274 | Returns the variant graph for the text specified at $textid, in SVG form. |
b8a92065 |
275 | |
276 | =cut |
277 | |
75354c3a |
278 | sub variantgraph :Local :Args(1) { |
b8a92065 |
279 | my( $self, $c, $textid ) = @_; |
98a45925 |
280 | my $tradition = $c->model('Directory')->tradition( $textid ); |
75354c3a |
281 | unless( $tradition ) { |
2bfac197 |
282 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
283 | } |
41279a86 |
284 | my $ok = _check_permission( $c, $tradition ); |
285 | return unless $ok; |
286 | |
98a45925 |
287 | my $collation = $tradition->collation; |
75354c3a |
288 | $c->stash->{'result'} = $collation->as_svg; |
289 | $c->forward('View::SVG'); |
b8a92065 |
290 | } |
75354c3a |
291 | |
b8a92065 |
292 | =head2 stemma |
293 | |
75354c3a |
294 | GET /stemma/$textid/$stemmaseq |
295 | POST /stemma/$textid/$stemmaseq, { 'dot' => $dot_string } |
b8a92065 |
296 | |
75354c3a |
297 | Returns an SVG representation of the given stemma hypothesis for the text. |
298 | If the URL is called with POST, the stemma at $stemmaseq will be altered |
299 | to reflect the definition in $dot_string. If $stemmaseq is 'n', a new |
300 | stemma will be added. |
b8a92065 |
301 | |
302 | =cut |
303 | |
75354c3a |
304 | sub stemma :Local :Args(2) { |
41279a86 |
305 | my( $self, $c, $textid, $stemmaid ) = @_; |
b8a92065 |
306 | my $m = $c->model('Directory'); |
307 | my $tradition = $m->tradition( $textid ); |
75354c3a |
308 | unless( $tradition ) { |
2bfac197 |
309 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
310 | } |
41279a86 |
311 | my $ok = _check_permission( $c, $tradition ); |
312 | return unless $ok; |
313 | |
41279a86 |
314 | $c->stash->{'result'} = ''; |
75354c3a |
315 | my $stemma; |
316 | if( $c->req->method eq 'POST' ) { |
317 | if( $ok eq 'full' ) { |
41279a86 |
318 | my $dot = $c->request->body_params->{'dot'}; |
75354c3a |
319 | try { |
320 | if( $stemmaid eq 'n' ) { |
321 | # We are adding a new stemma. |
322 | $stemma = $tradition->add_stemma( 'dot' => $dot ); |
ce1c5863 |
323 | $stemmaid = $tradition->stemma_count - 1; |
2bfac197 |
324 | } elsif( $stemmaid !~ /^\d+$/ ) { |
325 | return _json_error( $c, 403, "Invalid stemma ID specification $stemmaid" ); |
75354c3a |
326 | } elsif( $stemmaid < $tradition->stemma_count ) { |
327 | # We are updating an existing stemma. |
328 | $stemma = $tradition->stemma( $stemmaid ); |
329 | $stemma->alter_graph( $dot ); |
330 | } else { |
331 | # Unrecognized stemma ID |
2bfac197 |
332 | return _json_error( $c, 404, "No stemma at index $stemmaid, cannot update" ); |
75354c3a |
333 | } |
334 | } catch ( Text::Tradition::Error $e ) { |
335 | return _json_error( $c, 500, $e->message ); |
336 | } |
41279a86 |
337 | $m->store( $tradition ); |
75354c3a |
338 | } else { |
339 | # No permissions to update the stemma |
340 | return _json_error( $c, 403, |
341 | 'You do not have permission to update stemmata for this tradition' ); |
41279a86 |
342 | } |
b8a92065 |
343 | } |
75354c3a |
344 | |
345 | # For a GET or a successful POST request, return the SVG representation |
346 | # of the stemma in question, if any. |
75354c3a |
347 | if( !$stemma && $tradition->stemma_count > $stemmaid ) { |
348 | $stemma = $tradition->stemma( $stemmaid ); |
349 | } |
ce1c5863 |
350 | my $stemma_xml = $stemma ? $stemma->as_svg( { size => [ 500, 375 ] } ) : ''; |
351 | # What was requested, XML or JSON? |
352 | my $return_view = 'SVG'; |
353 | if( my $accept_header = $c->req->header('Accept') ) { |
354 | $c->log->debug( "Received Accept header: $accept_header" ); |
355 | foreach my $type ( split( /,\s*/, $accept_header ) ) { |
356 | # If we were first asked for XML, return SVG |
357 | last if $type =~ /^(application|text)\/xml$/; |
358 | # If we were first asked for JSON, return JSON |
359 | if( $type eq 'application/json' ) { |
360 | $return_view = 'JSON'; |
361 | last; |
362 | } |
363 | } |
364 | } |
365 | if( $return_view eq 'SVG' ) { |
366 | $c->stash->{'result'} = $stemma_xml; |
367 | $c->forward('View::SVG'); |
368 | } else { # JSON |
369 | $stemma_xml =~ s/\n/ /mg; |
370 | $c->stash->{'result'} = { 'stemmaid' => $stemmaid, 'stemmasvg' => $stemma_xml }; |
371 | $c->forward('View::JSON'); |
372 | } |
b8a92065 |
373 | } |
374 | |
375 | =head2 stemmadot |
376 | |
75354c3a |
377 | GET /stemmadot/$textid/$stemmaseq |
b8a92065 |
378 | |
379 | Returns the 'dot' format representation of the current stemma hypothesis. |
380 | |
381 | =cut |
382 | |
75354c3a |
383 | sub stemmadot :Local :Args(2) { |
384 | my( $self, $c, $textid, $stemmaid ) = @_; |
b8a92065 |
385 | my $m = $c->model('Directory'); |
386 | my $tradition = $m->tradition( $textid ); |
75354c3a |
387 | unless( $tradition ) { |
2bfac197 |
388 | return _json_error( $c, 404, "No tradition with ID $textid" ); |
75354c3a |
389 | } |
41279a86 |
390 | my $ok = _check_permission( $c, $tradition ); |
391 | return unless $ok; |
75354c3a |
392 | my $stemma = $tradition->stemma( $stemmaid ); |
393 | unless( $stemma ) { |
2bfac197 |
394 | return _json_error( $c, 404, "Tradition $textid has no stemma ID $stemmaid" ); |
75354c3a |
395 | } |
396 | # Get the dot and transmute its line breaks to literal '|n' |
397 | $c->stash->{'result'} = { 'dot' => $stemma->editable( { linesep => '|n' } ) }; |
41279a86 |
398 | $c->forward('View::JSON'); |
399 | } |
400 | |
75354c3a |
401 | #################### |
402 | ### Helper functions |
403 | #################### |
41279a86 |
404 | |
75354c3a |
405 | # Helper to check what permission, if any, the active user has for |
406 | # the given tradition |
41279a86 |
407 | sub _check_permission { |
408 | my( $c, $tradition ) = @_; |
409 | my $user = $c->user_exists ? $c->user->get_object : undef; |
410 | if( $user ) { |
929ba7c8 |
411 | return 'full' if ( $user->is_admin || |
412 | ( $tradition->has_user && $tradition->user->id eq $user->id ) ); |
080f8a02 |
413 | } |
414 | # Text doesn't belong to us, so maybe it's public? |
415 | return 'readonly' if $tradition->public; |
416 | |
417 | # ...nope. Forbidden! |
75354c3a |
418 | return _json_error( $c, 403, 'You do not have permission to view this tradition.' ); |
419 | } |
420 | |
421 | # Helper to throw a JSON exception |
422 | sub _json_error { |
423 | my( $c, $code, $errmsg ) = @_; |
424 | $c->response->status( $code ); |
425 | $c->stash->{'result'} = { 'error' => $errmsg }; |
426 | $c->forward('View::JSON'); |
929ba7c8 |
427 | return 0; |
41279a86 |
428 | } |
429 | |
b8a92065 |
430 | =head2 default |
431 | |
432 | Standard 404 error page |
433 | |
434 | =cut |
435 | |
436 | sub default :Path { |
437 | my ( $self, $c ) = @_; |
438 | $c->response->body( 'Page not found' ); |
439 | $c->response->status(404); |
440 | } |
441 | |
442 | =head2 end |
443 | |
444 | Attempt to render a view, if needed. |
445 | |
446 | =cut |
447 | |
448 | sub end : ActionClass('RenderView') {} |
449 | |
450 | =head1 AUTHOR |
451 | |
452 | Tara L Andrews |
453 | |
454 | =head1 LICENSE |
455 | |
456 | This library is free software. You can redistribute it and/or modify |
457 | it under the same terms as Perl itself. |
458 | |
459 | =cut |
460 | |
461 | __PACKAGE__->meta->make_immutable; |
462 | |
463 | 1; |