#!/sbin/openrc-run
# Copyright 2024 Willy Garidol
# Distributed under the terms of the GNU General Public License v3

depend() {
        need localmount net
}

UC_LOG_PATH=/var/log/user-containers
UC_SLOT="${SVCNAME#user-containers.}"
UC_USER=${USER:-${UC_SLOT}}
UC_COMPOSER_FILE=${COMPOSER_FILE:-docker-compose.yml}
UC_CHOWN_DIR=${CHOWN_DIR}
if [ "${UC_SLOT}" != "user-containers" ]
then
        UC_HOME=${HOME:-$(su - ${UC_USER} -c "pwd")}
fi

extra_commands="update"
update() {
        if [ "${UC_SLOT}" != "user-containers" ]
        then
                COMMAND="$(which podman)"
                stop
                ebegin "Running podman compose pull..."
                su - ${UC_USER} -c "${COMMAND} compose -f ${UC_COMPOSER_FILE} pull"
                start
        else
                ebegin "Error: do not run this script, run a link to it!"
                eend 255
        fi
}

description=${DESCRIPTION:-You forgot to describe your container}
pidfile="/run/${RC_SVCNAME}.pid"

start_pre() {
        if [ "${UC_SLOT}" != "user-containers" ]
        then
                test -e "${UC_LOG_PATH}" || mkdir "${UC_LOG_PATH}"
                test -e "${UC_LOG_PATH}/${UC_SLOT}" || {
                        mkdir "${UC_LOG_PATH}/${UC_SLOT}"
                } && chown -R ${UC_USER} "${UC_LOG_PATH}/${UC_SLOT}"
                if [ -n "${UC_CHOWN_DIR}" -a -e ${UC_CHOWN_DIR} ]
                then
                        chown -R ${UC_USER} ${UC_CHOWN_DIR}
                fi
        else
                ebegin "Error: do not run this script, run a link to it!"
                eend 255
        fi
}


start() {
        ebegin "Starting container '${UC_SLOT}' for user '${UC_USER}' (${UC_HOME})"
        COMMAND="$(which podman)"
        ARGUMENTS=(compose -f ${UC_COMPOSER_FILE} up)
        ebegin " ... ensuring nat table is loaded ..."
        iptables -L -t nat &> /dev/null
        ebegin " ... creating '${UC_SLOT}-net' ..."
        podman network create ${UC_SLOT}-net &> /dev/null
        su - "${UC_USER}" -c "$(which podman) compose down" &> /dev/null
        start-stop-daemon -p ${pidfile} \
                          -1 "${UC_LOG_PATH}/${UC_SLOT}/${UC_SLOT}.out.log" \
                          -2 "${UC_LOG_PATH}/${UC_SLOT}/${UC_SLOT}.err.log" \
                          -u ${UC_USER} \
                          -d ${UC_HOME} \
                          -b -m \
                          --start  "${COMMAND}" \
                          -- ${ARGUMENTS[@]}
        eend $?
}

stop() {
        ebegin " ... running 'podman compose down' ..."
        su - "${UC_USER}" -c "$(which podman) compose -f ${UC_COMPOSER_FILE} down" &> /dev/null
        start-stop-daemon -p ${pidfile} \
                          -u ${UC_USER} \
                          -d ${UC_HOME} \
                          --stop ${UC_SLOT}
        eend $?
}