Optionaly include path attribute in catalog

[rgaudin]

kiwix-serve in --catalogOnly mode needs every book to have a path attribute as that's what it uses to build path prefixes.
FYI it is not using ZIM metadata (Name) for that because of conflicts that could occur.

In the non-CMS world, we'd generate a path attribute based on url attribute when the XML is to be used in --catalogOnly.

Now, I had to replicate that hack but it seems to me that this is something that the CMS should do, upon request.

Can we imagine passing a param (?addPath to /collections/xxx/catalog.xml) and receive the catalog with path` attr on books? Value would be the folder and the filename.

[rgaudin]

Actually, we have three use cases:

• [staging]: we use actual files so we need path to match our physical ones. For some reason, /staging/catalog.xml is returning the catalog with path="/data/xxx
• [catalog]: we run on --catalogOnly. We need path attribute but don't care about the prefix.
• [browse]: we use actual files so we need path to match our physical ones.

I think the best would be that this param passes the wanted prefix.