Opt-in via channel

[dblock]

This is something donut.ai does, instead of global opt-in, you join a channel and people are picked from that channel.

[iozz]

That's super useful on Donut.ai, it helps automatically opt in new hires for example (they join our Slack, they automatically join the channel, they are opt in for pairing).

[dblock]

Here's how I think it can work.

Poor Man's Version

1. Admins DM the bot set opt #channel (currently we have set opt in (default) and set opt out), which says "use #channel to opt-in/out users.
2. In https://github.com/dblock/slack-sup/blob/master/slack-sup/models/team.rb#L324, called from https://github.com/dblock/slack-sup/blob/master/slack-sup/models/team.rb#L219, check whether the user is a member of #channel and opt them in accordingly.

Per Channel S'Up

1. Create a new Channel model that holds a channel ID/name and all S'Up fields currently on Team, including sup_wday or sup_size.
2. Use #general or auto-create a #sup channel upon bot installation. Migrate all existing team-wide S'Ups into that channel.
3. Re-wire all commands to be channel-aware.
4. When creating/managing S'Ups, iterate through team.channels.

[dblock]

@iozz maybe you want to take this up? I'd be happy to help

[dblock]

Active rewrite that assumes 1 channel = 1 sup in https://github.com/dblock/slack-sup/tree/channel-sups that passes all specs.

[dblock]

@iozz Any interest in testing a new version? It would be a separate installation from the current one and can co-exist with the existing S'Up. Drop me a note to dblock at dblock dot org if you are.

[dblock]

This is now the default version of S'Up on https://sup2.playplay.io/