Topic Management

[edunham]

Moved from hamperbot/hamper#60

---

For channels where Hamper has permissions, it would be nice to use him to automate channel setting and modification. Since topics are often a rather long list of links and things separated by some symbol like :: or |, perhaps we could talk to it like a list:

--- | Topic for #osu-lug is: OSU 
          Linux Users Group :: lug.oregonstate.edu 
          updated! :: Meetings Tuesdays 6PM KEC1005 :: 
          see #osu-lug-admin for bureaucracy :: CHOVDA 
          from 11-1 on Fridays, come when you can make 
          it


!topic replace topic[1] our site is lug.oregonstate.edu

--- | Topic for #osu-lug is: OSU 
          Linux Users Group :: our site is lug.oregonstate.edu 
           :: Meetings Tuesdays 6PM KEC1005 :: 
          see #osu-lug-admin for bureaucracy :: CHOVDA 
          from 11-1 on Fridays, come when you can make 
          it

!topic add yay Linux!

--- | Topic for #osu-lug is: OSU 
          Linux Users Group :: our site is lug.oregonstate.edu 
           :: Meetings Tuesdays 6PM KEC1005 :: 
          see #osu-lug-admin for bureaucracy :: CHOVDA 
          from 11-1 on Fridays, come when you can make 
          it :: yay Linux!

This would tie in with the ACL system to determine who can do things to a given channel's topic.

Proposed flags for !topic:

• replace
  • changes the thing at to
• clear
  • Deletes the entire topic
• set
  • Overwrites entire topic with
• append
  • appends to end of topic, after a separator
• delete
  • removes the thing at from the topic and deletes the extra separator

---

Clear doesn't sound that useful. Did you have a use case in mind for it?

Instead of !topic replace topic[1] foo, I think it should probably be !topic replace 1 foo. That is minor though.

Other thoughts: topics have a maximum size, both a hard technical limitation, and a soft human limitation (at some point it is just too long to read). What happens if you we go over those limits? Is there a maximum number of fields?