Merge pull request #27 from Automattic/team_sync_allow_membership_syn…

…c_toggle_config

Allow membership sync to be disabled in team sync

src/TeamSyncer.ts

@@ -36,6 +36,7 @@ export interface ITeamSyncConfig {
         alias_prefix?: string;
         allow_private?: boolean;
         allow_public?: boolean;
+        allow_membership_sync?: boolean;
         hint_channel_admins?: boolean;
     };
     users?: {
@@ -78,6 +79,9 @@ export class TeamSyncer {
                 if (!teamConfig.channels.allow_public && !teamConfig.channels.allow_private) {
                     throw Error('At least one of allow_public, allow_private must be true in the teamSync config');
                 }
+                if (teamConfig.channels.allow_membership_sync === undefined) {
+                    teamConfig.channels.allow_membership_sync = true;
+                }
                 // Send hint to channel admins
                 teamConfig.channels.hint_channel_admins =
                   teamConfig.channels.hint_channel_admins === undefined
@@ -433,6 +437,14 @@ export class TeamSyncer {
             throw Error("Could not find team");
         }
 
+        const config: false | ITeamSyncConfig = this.getTeamSyncConfig(teamId,"channel");
+        if (config) {
+            if (config.channels?.allow_membership_sync === false) {
+                log.info("Skipping membership sync because disabled in config");
+                return;
+            }
+        }
+
         // create Set for both matrix membership state and slack membership state
         // compare them to figure out who all needs to join the matrix room and leave the matrix room
         // this obviously assumes we treat slack as the source of truth for membership