gracefully handle lack of morphological info / capability in rel mapper
[scpubgit/stemmaweb.git] / lib / stemmaweb / Controller / Relation.pm
index 22a1d07..cd0b957 100644 (file)
@@ -64,6 +64,11 @@ sub text :Chained('/') :PathPart('relation') :CaptureArgs(1) {
         $tradition->collation->_set_tradition( $tradition );
         $c->model('Directory')->save( $tradition );
     }
+    # Check permissions. Will return 403 if denied, otherwise will
+    # put the appropriate value in the stash.
+    my $ok = _check_permission( $c, $tradition );
+    return unless $ok;
+
        # See how big the tradition is. Edges are more important than nodes
        # when it comes to rendering difficulty.
        my $numnodes = scalar $tradition->collation->readings;
@@ -122,7 +127,12 @@ sub main :Chained('text') :PathPart('') :Args(0) {
        $c->stash->{'startseg'} = $startseg if defined $startseg;
        $c->stash->{'svg_string'} = $svg_str;
        $c->stash->{'text_title'} = $tradition->name;
-       $c->stash->{'text_lang'} = $tradition->language;
+       if( $tradition->can('language') ) {
+               $c->stash->{'text_lang'} = $tradition->language;
+               $c->stash->{'can_morphologize'} = 1;
+       } else {
+               $c->stash->{'text_lang'} = 'Default';
+       }
        $c->stash->{'template'} = 'relate.tt';
 }
 
@@ -172,6 +182,8 @@ success or 403 on error.
 sub relationships :Chained('text') :PathPart :Args(0) {
        my( $self, $c ) = @_;
        my $tradition = delete $c->stash->{'tradition'};
+       my $ok = _check_permission( $c, $tradition );
+       return unless $ok;
        my $collation = $tradition->collation;
        my $m = $c->model('Directory');
        if( $c->request->method eq 'GET' ) {
@@ -187,37 +199,50 @@ sub relationships :Chained('text') :PathPart :Args(0) {
                        push( @all_relations, $relhash );
                }
                $c->stash->{'result'} = \@all_relations;
-       } elsif( $c->request->method eq 'POST' ) {
-               my $node = $c->request->param('source_id');
-               my $target = $c->request->param('target_id');
-               my $relation = $c->request->param('rel_type');
-               my $note = $c->request->param('note');
-               my $scope = $c->request->param('scope');
-       
-               my $opts = { 'type' => $relation,
-                                        'scope' => $scope };
-               $opts->{'annotation'} = $note if $note;
-               
-               try {
-                       my @vectors = $collation->add_relationship( $node, $target, $opts );
-                       $c->stash->{'result'} = \@vectors;
-                       $m->save( $tradition );
-               } catch( Text::Tradition::Error $e ) {
+       } else {
+               # Check write permissions first of all
+               if( $c->stash->{'permission'} ne 'full' ) {
                        $c->response->status( '403' );
-                       $c->stash->{'result'} = { 'error' => $e->message };
+                       $c->stash->{'result'} = { 
+                               'error' => 'You do not have permission to view this tradition.' };
+               } elsif( $c->request->method eq 'POST' ) {
+                       unless( $c->stash->{'permission'} eq 'full' ) {
+                               $c->response->status( '403' );
+                               $c->stash->{'result'} = { 
+                                       'error' => 'You do not have permission to view this tradition.' };
+                               $c->detach( 'View::JSON' );
+                       }       
+                       my $node = $c->request->param('source_id');
+                       my $target = $c->request->param('target_id');
+                       my $relation = $c->request->param('rel_type');
+                       my $note = $c->request->param('note');
+                       my $scope = $c->request->param('scope');
+               
+                       my $opts = { 'type' => $relation,
+                                                'scope' => $scope };
+                       $opts->{'annotation'} = $note if $note;
+                       
+                       try {
+                               my @vectors = $collation->add_relationship( $node, $target, $opts );
+                               $c->stash->{'result'} = \@vectors;
+                               $m->save( $tradition );
+                       } catch( Text::Tradition::Error $e ) {
+                               $c->response->status( '403' );
+                               $c->stash->{'result'} = { 'error' => $e->message };
+                       }
+               } elsif( $c->request->method eq 'DELETE' ) {
+                       my $node = $c->request->param('source_id');
+                       my $target = $c->request->param('target_id');
+               
+                       try {
+                               my @vectors = $collation->del_relationship( $node, $target );
+                               $m->save( $tradition );
+                               $c->stash->{'result'} = \@vectors;
+                       } catch( Text::Tradition::Error $e ) {
+                               $c->response->status( '403' );
+                               $c->stash->{'result'} = { 'error' => $e->message };
+                       }       
                }
-       } elsif( $c->request->method eq 'DELETE' ) {
-               my $node = $c->request->param('source_id');
-               my $target = $c->request->param('target_id');
-       
-               try {
-                       my @vectors = $collation->del_relationship( $node, $target );
-                       $m->save( $tradition );
-                       $c->stash->{'result'} = \@vectors;
-               } catch( Text::Tradition::Error $e ) {
-                       $c->response->status( '403' );
-                       $c->stash->{'result'} = { 'error' => $e->message };
-               }       
        }
        $c->forward('View::JSON');
 }
@@ -244,9 +269,9 @@ sub _reading_struct {
        # Return a JSONable struct of the useful keys.  Keys meant to be writable
        # have a true value; read-only keys have a false value.
        my $struct = {};
-       map { $struct->{$_} = $reading->$_ } keys( %read_write_keys );
+       map { $struct->{$_} = $reading->$_ if $reading->can( $_ ) } keys( %read_write_keys );
        # Special case
-       $struct->{'lexemes'} = [ $reading->lexemes ];
+       $struct->{'lexemes'} = $reading->can( 'lexemes' ) ? [ $reading->lexemes ] : [];
        # Look up any words related via spelling or orthography
        my $sameword = sub { 
                my $t = $_[0]->type;
@@ -263,6 +288,8 @@ sub _reading_struct {
 sub readings :Chained('text') :PathPart :Args(0) {
        my( $self, $c ) = @_;
        my $tradition = delete $c->stash->{'tradition'};
+       my $ok = _check_permission( $c, $tradition );
+       return unless $ok;
        my $collation = $tradition->collation;
        my $m = $c->model('Directory');
        if( $c->request->method eq 'GET' ) {
@@ -298,45 +325,59 @@ sub reading :Chained('text') :PathPart :Args(1) {
                $c->stash->{'result'} = $rdg ? _reading_struct( $rdg )
                        : { 'error' => "No reading with ID $reading_id" };
        } elsif ( $c->request->method eq 'POST' ) {
+               if( $c->stash->{'permission'} ne 'full' ) {
+                       $c->response->status( '403' );
+                       $c->stash->{'result'} = { 
+                               'error' => 'You do not have permission to view this tradition.' };
+                       $c->detach('View::JSON');
+                       return;
+               }
                my $errmsg;
-               # Are we re-lemmatizing?
-               if( $c->request->param('relemmatize') ) {
-                       my $nf = $c->request->param('normal_form');
-                       # TODO throw error unless $nf
-                       $rdg->normal_form( $nf );
-                       # TODO throw error if lemmatization fails
-                       # TODO skip this if normal form hasn't changed
-                       $rdg->lemmatize();
-               } else {
-                       # Set all the values that we have for the reading.
-                       # TODO error handling
-                       foreach my $p ( keys %{$c->request->params} ) {
-                               if( $p =~ /^morphology_(\d+)$/ ) {
-                                       # Set the form on the correct lexeme
-                                       my $midx = $1;
-                                       $c->log->debug( "Fetching lexeme $midx" );
-                                       my $lx = $rdg->lexeme( $midx );
-                                       my $strrep = $rdg->language . ' // ' 
-                                               . $c->request->param( $p );
-                                       my $idx = $lx->has_form( $strrep );
-                                       unless( defined $idx ) {
-                                               # Make the word form and add it to the lexeme.
-                                               $c->log->debug("Adding new form for $strrep");
-                                               try {
-                                                       $idx = $lx->add_matching_form( $strrep ) - 1;
-                                               } catch( Text::Tradition::Error $e ) {
-                                                       $c->response->status( '403' );
-                                                       $errmsg = $e->message;
+               if( $rdg && $rdg->does('Text::Tradition::Morphology') ) {
+                       # Are we re-lemmatizing?
+                       if( $c->request->param('relemmatize') ) {
+                               my $nf = $c->request->param('normal_form');
+                               # TODO throw error unless $nf
+                               $rdg->normal_form( $nf );
+                               # TODO throw error if lemmatization fails
+                               # TODO skip this if normal form hasn't changed
+                               $rdg->lemmatize();
+                       } else {
+                               # Set all the values that we have for the reading.
+                               # TODO error handling
+                               foreach my $p ( keys %{$c->request->params} ) {
+                                       if( $p =~ /^morphology_(\d+)$/ ) {
+                                               # Set the form on the correct lexeme
+                                               my $morphval = $c->request->param( $p );
+                                               next unless $morphval;
+                                               my $midx = $1;
+                                               my $lx = $rdg->lexeme( $midx );
+                                               my $strrep = $rdg->language . ' // ' . $morphval;
+                                               my $idx = $lx->has_form( $strrep );
+                                               unless( defined $idx ) {
+                                                       # Make the word form and add it to the lexeme.
+                                                       try {
+                                                               $idx = $lx->add_matching_form( $strrep ) - 1;
+                                                       } catch( Text::Tradition::Error $e ) {
+                                                               $c->response->status( '403' );
+                                                               $errmsg = $e->message;
+                                                       } catch {
+                                                               # Something else went wrong, probably a Moose error
+                                                               $c->response->status( '403' );
+                                                               $errmsg = 'Something went wrong with the request';      
+                                                       }
                                                }
+                                               $lx->disambiguate( $idx ) if defined $idx;
+                                       } elsif( $read_write_keys{$p} ) {
+                                               my $val = _clean_booleans( $rdg, $p, $c->request->param( $p ) );
+                                               $rdg->$p( $val );
                                        }
-                                       $lx->disambiguate( $idx ) if defined $idx;
-                               } elsif( $read_write_keys{$p} ) {
-                                       my $val = _clean_booleans( $rdg, $p, $c->request->param( $p ) );
-                                       $rdg->$p( $val );
-                               }
-                       }               
+                               }               
+                       }
+                       $m->save( $rdg );
+               } else {
+                       $errmsg = "Reading does not exist or cannot be morphologized";
                }
-               $m->save( $rdg );
                $c->stash->{'result'} = $errmsg ? { 'error' => $errmsg }
                        : _reading_struct( $rdg );
 
@@ -345,6 +386,29 @@ sub reading :Chained('text') :PathPart :Args(1) {
 
 }
 
+sub _check_permission {
+       my( $c, $tradition ) = @_;
+    my $user = $c->user_exists ? $c->user->get_object : undef;
+    # Does this user have access?
+    if( $user ) {
+               if( $user->is_admin || 
+                       ( $tradition->has_user && $tradition->user->id eq $user->id ) ) {
+                       $c->stash->{'permission'} = 'full';
+                       return 1;
+               }
+    } 
+    # Is it public?
+    if( $tradition->public ) {
+       $c->stash->{'permission'} = 'readonly';
+       return 1;
+    } 
+       # Forbidden!
+       $c->response->status( 403 );
+       $c->response->body( 'You do not have permission to view this tradition.' );
+       $c->detach( 'View::Plain' );
+       return 0;
+}
+
 sub _clean_booleans {
        my( $rdg, $param, $val ) = @_;
        if( $rdg->meta->get_attribute( $param )->type_constraint->name eq 'Bool' ) {