add /remove and /removeadmin commands

Author: normen

main.go

@@ -414,9 +414,11 @@ func PrintHelp() {
 	fmt.Fprintln(textView, "[-::-]Groups[-::-]")
 	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"leave[::-]  = Leave group")
 	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"create[::-] [user-id[] [user-id[] Group Subject  = Create group with users")
+	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"subject[::-] New Subject  = Change subject of group")
 	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"add[::-] [user-id[]  = Add user to group")
+	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"remove[::-] [user-id[]  = Remove user from group")
 	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"admin[::-] [user-id[]  = Set admin role for user in group")
-	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"subject[::-] New Subject  = Change subject of group")
+	fmt.Fprintln(textView, "[::b] "+cmdPrefix+"removeadmin[::-] [user-id[]  = Remove admin role for user in group")
 	fmt.Fprintln(textView, "Use[::b]", config.Config.Keymap.CommandCopyuser, "[::-]to copy a selected user id")
 	fmt.Fprintln(textView, "")
 	fmt.Fprintln(textView, "Configuration:")

messages/session_manager.go

@@ -610,6 +610,40 @@ func (sm *SessionManager) execCommand(command Command) {
 			sm.uiHandler.PrintText("added new members for " + groupId)
 		}
 		sm.uiHandler.PrintError(err)
+	case "remove":
+		groupId := sm.currentReceiver
+		if strings.Index(groupId, GROUPSUFFIX) < 0 {
+			sm.uiHandler.PrintText("not a group")
+			return
+		}
+		if !checkParam(command.Params, 1) {
+			sm.printCommandUsage("remove", "[user-id[]")
+			return
+		}
+		wac := sm.getConnection()
+		var err error
+		_, err = wac.RemoveMember(groupId, command.Params)
+		if err == nil {
+			sm.uiHandler.PrintText("removed from " + groupId)
+		}
+		sm.uiHandler.PrintError(err)
+	case "removeadmin":
+		groupId := sm.currentReceiver
+		if strings.Index(groupId, GROUPSUFFIX) < 0 {
+			sm.uiHandler.PrintText("not a group")
+			return
+		}
+		if !checkParam(command.Params, 1) {
+			sm.printCommandUsage("removeadmin", "[user-id[]")
+			return
+		}
+		wac := sm.getConnection()
+		var err error
+		_, err = wac.RemoveAdmin(groupId, command.Params)
+		if err == nil {
+			sm.uiHandler.PrintText("removed admin for " + groupId)
+		}
+		sm.uiHandler.PrintError(err)
 	case "admin":
 		groupId := sm.currentReceiver
 		if strings.Index(groupId, GROUPSUFFIX) < 0 {