Issues with retrieving IIIF collections

[BartChris]

I want to retrieve an IIIF-collection via Hymir and have setup the resolver rule with a "collection"-prefix as described in the documentation.

 - pattern: ^collection-([a-zA-Z0-9-_]+)$
        substitutions:
          - 'file:/collections/$1.json'

I had the assumption that i could request a collection using the Identifier and Hymir would statically add the prefix to match the defined collection rule. But when requesting the endpoint

api/presentation/v2/collection/123456

the log indicates that there is no match and it seems like the prefix is not added.
matching 123456 against ^collection-([a-zA-Z0-9-_]+)$ is false

But if i then change my request by including the prefix in the URL
api/presentation/v2/collection/collection-123456

it seems like the prefix is added to the identifier. The consequence is that now the matching is tried with a duplicated prefix

collection-collection-123456 against ^collection-([a-zA-Z0-9-_]+)$ is true

This is of course not what i want since now i file with a collection prefix is searched which does not exist:

 Could not resolve identifier collection-collection-123456 with MIME type application/json to a readable Resource
 Attempted URIs were [file:/collections/collection-123456.json]

The only way to fix this was to not append the collection-prefix in the implementation. by taking out this line.

iiif-server-hymir/src/main/java/de/digitalcollections/iiif/hymir/presentation/backend/PresentationRepositoryImpl.java

Line 72 in dee5a7d

String collectionName = COLLECTION_PREFIX + name;

The rule ( ^collection-([a-zA-Z0-9-_]+)$ then works as expected (if the collection-prefix is added to the URL) and the files are delivered.