bash script to kick all IRC users in a matrix channel

matrix-kick-irc-users.sh

#!/bin/bash
# crontab -e
# 23 4  *   *   *     bash /home/irc-bridge/.synapse/EIGENE_purge_history_daily > /dev/null 2>&1

cd /home/irc-bridge/.synapse/

DOMAIN="matrix.domain.org"
ADMIN="@some_admin:$DOMAIN"
TOKEN=$(sqlite3 homeserver.db "select token from access_tokens where user_id like '$ADMIN' order by id desc limit 1;")

#rooms
ROOMS_ARRAY=(
'!SVAAxpxxxxxQyFaHOL:$DOMAIN' 
'!XVAAxpxxxxxQyFaHOL:$DOMAIN' 
)

BUSY="pragma busy_timeout=2000"

for ROOM_ID in "${ROOMS_ARRAY[@]}"
do
   :
        BUFFER=$(sqlite3 homeserver.db "$BUSY;select user_id from room_memberships "\
          "where room_id='$ROOM_ID' and membership not in ( 'leave') and user_id like '@irc_%' limit 50")
        echo $BUFFER
        USER_IDS=$(echo $BUFFER | cut -f 1 -d ' ' --complement)
        #sleep 1
        for u in $USER_IDS; do
                echo kick user $u from $ROOM_ID
                #       curl -X POST $DOMAIN':8008/_matrix/client/r0/admin/purge_history/'$ROOM_NAME'/'$EVENT_ID'?access_token='$TOKEN
                echo curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{"reason": "obsolete room","user_id": "'$u'" }' 'https://'$DOMAIN':8008/_matrix/client/r0/rooms/'$ROOM_ID'/kick?access_token='$TOKEN
                curl -X POST -d '{"reason": "obsolete room","user_id": "'$u'" }' $DOMAIN':8008/_matrix/client/r0/rooms/'$ROOM_ID'/kick?access_token='$TOKEN
                sleep 2
        done
done