allow messages for *all* teams

[umlaeute]

currently we can specify a welcome-text for each team separately.

however, i would like to be able to send people a welcome-message after their first login - regardless of the team they join.

Probably the simplest solution (from a admin-pov) is to be able to omit the TeamName or use a wild-card.

E.g. the following would remind a user of the code-of-conduct the first time they log-in (the TeamName field has been omitted), and gives a welcome-message for each team they join (the TeamName is *):

"Plugins": {
    "com.mattermost.welcomebot": {
        "WelcomeMessages": [
            {
                "DelayInSeconds": 1,
                "Message": [
                    "### Welcome {{.UserDisplayName}}!",
                    "",
                    "Please check out our [Code-Of-Conduct](https://mm.example.com/coc/) before using MatterMost",
                ]
            },
            {
                "TeamName": "*",
                "DelayInSeconds": 5,
                "Message": [
                    "### Welcome {{.UserDisplayName}} to the {{.Team.DisplayName}} team!",
                    "",
                    "Feel free to discuss off-topic things, but please use the ~off-topic channel for this",
                ]
            }
    ]
  }
}

[levb]

I 👍 the suggestion of defaulting to ALL (augmented by team-specific messages). @aaronrothschild are you good with it?

[hanzei]

"" should mean ALL

[umlaeute]

The good thing about "*" is, that it is consistent with other wildcard-uses.

i'm afraid that with a suggestion of "", the first one to pick up the implementation would implement exactly that, and nothing else. and the issue will be closed and not looked at again.

whereas if "*" gets implemented, you have a much more powerful tool at hand with little additional coding effort.

[hanzei]

Good point on the regex support. Sound good to me 👍

[umlaeute]

i was actually more thinking of globbing, but regex is fine for me as well :-)