MM-57906 Update platform preference when disconnecting (#603) (#609)

* reset to MM primary platform on disconnect

* revert file changes

* Fix linter

---------

Co-authored-by: Miguel de la Cruz <miguel@mcrx.me>
(cherry picked from commit a96acd1)

server/command.go

@@ -527,6 +527,10 @@ func (p *Plugin) executeDisconnectCommand(args *model.CommandArgs) (*model.Comma
 	if err != nil {
 		return p.cmdSuccess(args, fmt.Sprintf("Error: unable to disconnect your account, %s", err.Error()))
 	}
+	err = p.setPrimaryPlatform(args.UserId, PreferenceValuePlatformMM)
+	if err != nil {
+		return p.cmdSuccess(args, fmt.Sprintf("Error: unable to reset your primary platform, %s", err.Error()))
+	}
 
 	_, _ = p.updateAutomutingOnUserDisconnect(args.UserId)
 

server/command_test.go

@@ -446,11 +446,15 @@ func TestExecuteDisconnectCommand(t *testing.T) {
 
 		err := th.p.store.SetUserInfo(user1.Id, "team_user_id", &oauth2.Token{AccessToken: "token", Expiry: time.Now().Add(10 * time.Minute)})
 		require.NoError(t, err)
+		err = th.p.setPrimaryPlatform(user1.Id, PreferenceValuePlatformMSTeams)
+		require.NoError(t, err)
 
 		commandResponse, appErr := th.p.executeDisconnectCommand(args)
 		require.Nil(t, appErr)
 		assertNoCommandResponse(t, commandResponse)
 		assertEphemeralResponse(th, t, args, "Your account has been disconnected.")
+
+		require.Equal(t, PreferenceValuePlatformMM, th.p.getPrimaryPlatform(user1.Id))
 	})
 }