Update endpoints for fetching Discussions data

[nikodamn]

Hey. Since we are doing some Discussions modernisation some endpoints needs to be updated. Here are latest Discussions API changes which may interest you:

GET <services-domain>/discussion/{siteId}/posts/{postId} ⇒ 
GET <wiki-domain>/wikia.php?controller=DiscussionPost&method=getPost&postId={postId}

GET <services-domain>/discussion/{siteId}/posts ⇒ 
GET <wiki-domain>/wikia.php?controller=DiscussionPost&method=getPosts

GET <services-domain>/discussion/{siteId}/threads/{threadId} ⇒ 
GET <wiki-domain>/wikia.php?controller=DiscussionThread&method=getThread&threadId={threadId}

GET <services-domain>/discussion/{siteId}/threads ⇒ 
GET <wiki-domain>/wikia.php?controller=DiscussionThread&method=getThreads

Due to that fact discussions.js and overview.js scripts might require some update. Additionaly we've noticed that you are using /discussion/{siteId}/posts/{title} https://github.com/Markus-Rost/discord-wiki-bot/blob/master/functions/discussion.js#L83 and /discussions/{siteId}/threads/{title} https://github.com/Markus-Rost/discord-wiki-bot/blob/master/functions/discussion.js#L200 which aren't really supported endpoints. It would be better to use one of those posted above.

Additionaly it would be great if you could add some User-Agent request header, but that's just nice to have. Thanks and feel free to ping me if you have any questions.

[Markus-Rost]

Thanks for the heads up, I'll update my usages.

Additionaly we've noticed that you are using /discussion/{siteId}/posts/{title} and /discussions/{siteId}/threads/{title} which aren't really supported endpoints.

Those are just /discussion/{siteId}/posts/{postId} and /discussion/{siteId}/threads/{threadId} usages in case the user provided search term (title variable) is a post or thread id. I'll update them to the new endpoints as well.

Additionaly it would be great if you could add some User-Agent request header, but that's just nice to have. Thanks and feel free to ping me if you have any questions.

I'm currently using Wiki-Bot/{version} (Discord; discord-wiki-bot) as my user agent for all requests.

@nikodamn I currently have issues open to add UCP message walls (#68) and UCP article comments (#69) to the bot, what would be the correct endpoints to get those?

[rybmat]

@Markus-Rost the endpoints linked in the issues for wall/comments are ok. We'll probably change the wall one to /wikia.php, but this will not happen very soon (probably next year)

[Markus-Rost]

Ok, thanks for letting me know.