#!/usr/bin/env bash
#
# docker-exec-cmd.sh


set -o errexit
set -o errtrace
set -o nounset
set -o pipefail


TODAY_DATE=$(date "+%Y%m%d")
echo ${TODAY_DATE}


# If something goes wrong, this script does not run forever, but times out
TIMEOUT_SECONDS=3600
# Logfile for the keycloak export instance
LOGFILE=/opt/jboss/export/keycloak_backup_${TODAY_DATE}.sh.log
# destionation export file
JSON_EXPORT_FILE=/opt/jboss/export/realms-export-single-file.json


KEYCLOAK_EXPORT_DIR=/opt/jboss/export/
KEYCLOAK_BACKUP_DIR=${KEYCLOAK_EXPORT_DIR}${TODAY_DATE}/
echo ${KEYCLOAK_BACKUP_DIR}
KEYCLOAK_TAR=keycloak-backup-${TODAY_DATE}.tar.gz


# Remove files from old backups inside the container
# You could also move the files or change the name with timestamp prefix
rm -f ${LOGFILE} ${JSON_EXPORT_FILE}


if [ -f ${KEYCLOAK_EXPORT_DIR}${KEYCLOAK_TAR} ]; then
    echo "tar file exist."
    rm -f ${KEYCLOAK_EXPORT_DIR}${KEYCLOAK_TAR}
fi


if [ -d "$KEYCLOAK_BACKUP_DIR" ]
then
    echo "$KEYCLOAK_BACKUP_DIR exist"
    rm -r ${KEYCLOAK_BACKUP_DIR}
fi


# Start a new keycloak instance with exporting options enabled.
# Use the port offset argument to prevent port conflicts
# with the "real" keycloak instance.
timeout ${TIMEOUT_SECONDS}s \
    /opt/jboss/keycloak/bin/standalone.sh \
        -Djboss.socket.binding.port-offset=99 \
        -Djboss.as.management.blocking.timeout=${TIMEOUT_SECONDS} \
        -Dkeycloak.migration.action=export \
        -Dkeycloak.migration.provider=dir \
        -Dkeycloak.migration.dir=${KEYCLOAK_BACKUP_DIR} \
        -Dkeycloak.migration.usersPerFile=1000 \
    > ${LOGFILE} &


#sudo docker exec -it sckeycloak /opt/jboss/keycloak/bin/standalone.sh -Djboss.socket.binding.port-offset=100 -Dkeycloak.migration.action=export -Dkeycloak.migration.realmName=AnalyticManagerV8 -Dkeycloak.migration.provider=dir -Dkeycloak.migration.usersPerFile=1000


# Grab the keycloak export instance process id
PID="${!}"


# Wait for the export to finish
# It will wait till it sees the string, which indicates
# a successful finished backup.
# If it will take too long (>TIMEOUT_SECONDS), it will be stopped.
timeout ${TIMEOUT_SECONDS}s \
    grep -m 1 "Export finished successfully" <(tail -f ${LOGFILE})


# Stop the keycloak export instance
kill ${PID}


# delete all files that have been modified more than 30 days ago
find ${KEYCLOAK_EXPORT_DIR} -type f -mtime +30 -delete


# tar cfz ${KEYCLOAK_EXPORT_DIR}keycloak-backup-${TODAY_DATE}.tar.gz  --remove-files -C $HOME ${KEYCLOAK_BACKUP_DIR}/*
tar cfz ${KEYCLOAK_EXPORT_DIR}${KEYCLOAK_TAR} ${KEYCLOAK_BACKUP_DIR} && rm -R ${KEYCLOAK_BACKUP_DIR}
if [ -f ${KEYCLOAK_EXPORT_DIR}${KEYCLOAK_TAR} ]; then
    echo "tar file exist, change file permission"
    chmod 777 ${KEYCLOAK_EXPORT_DIR}${KEYCLOAK_TAR}
fi