Merge pull request #218 from companieshouse/feature/get-content-type-sub-return-fix

Fix temporary implementation of get_content_tye sub

Author: amoriartyCH

lib/ChGovUk/Controllers/Company/FilingHistory.pm

@@ -126,7 +126,7 @@ sub view {
 
                             my $delay_end = $delay->begin(0);
                             trace "Calling document API to retrieve content_type for possible zip filing [%s]", $doc->{links}->{document_metadata};
-                            $self->_get_content_type( $doc->{links}->{document_metadata}, $doc, $delay_end);
+                            $self->_get_content_type_application_zip( $doc->{links}->{document_metadata}, $doc, $delay_end);
                         }
 
                         if ( $formatted_transaction_date >= $formatted_xhtml_available_date) {
@@ -202,12 +202,10 @@ sub view {
 
 #-------------------------------------------------------------------------------
 
-# _get_content_type calls the document API and retrieves a content_type for the provided filing.
-# Please note - this function grabs the first variable returned from the resources array and only uses it
-# in the template if it is application/zip (zip filing). Changes would be required if you wanted to use
-# other resource types returned in the template. If you want to return multiple changes would also be required to cater for this.
-# This future work has been documented in a ticket on JIRA: https://companieshouse.atlassian.net/browse/UK-155.
-sub _get_content_type {
+# _get_content_type_application_zip calls the document API and retrieves a resources array of content_types for the provided filing.
+# If a resources array is found, we will search the resources array for an 'application/zip' content_type and if found,
+# set it on the '$doc' element for use in the frontend template.
+sub _get_content_type_application_zip {
     my ( $self, $document_metadata_uri, $doc, $callback ) = @_;
 
     $self->ch_api->document($document_metadata_uri)->metadata->get->on(
@@ -234,8 +232,13 @@ sub _get_content_type {
             my ($api, $tx) = @_;
             my $resources = $tx->res->json->{resources};
             if ($resources) {
-                $doc->{content_type} = (keys $resources)[0];
-                trace "Successfully retrieved content_type %s for %s", $doc->{content_type}, $document_metadata_uri;
+                foreach my $content_type (keys $resources) {
+                    if ($content_type eq 'application/zip') {
+                        trace "ZIP filing found. Setting content_type on doc to application/zip [%s]", $document_metadata_uri;
+                        $doc->{content_type} = $content_type;
+                        last;
+                    }
+                }
             } else {
                 trace "No content_type found for %s. Setting content_type to unknown", $document_metadata_uri;
                 $doc->{content_type} = 'unknown';