#!/bin/sh

set -u

/services/capcheck.sh

SERVICES=""
FAILED_NAME=""
FAILED_STATUS=0

add_service() {
    script="$1"
    name="$2"
    "$script" &
    pid=$!
    SERVICES="${SERVICES} ${pid}:${name}"
}

remove_service() {
    target_pid="$1"
    updated=""
    for entry in ${SERVICES}; do
        pid="${entry%%:*}"
        [ -z "${pid}" ] && continue
        [ "${pid}" = "${target_pid}" ] && continue
        updated="${updated} ${entry}"
    done
    SERVICES="${updated}"
}

shutdown_services() {
    for entry in ${SERVICES}; do
        pid="${entry%%:*}"
        [ -z "${pid}" ] && continue
        if kill -0 "${pid}" 2>/dev/null; then
            kill "${pid}" 2>/dev/null || true
        fi
    done
    for entry in ${SERVICES}; do
        pid="${entry%%:*}"
        [ -z "${pid}" ] && continue
        wait "${pid}" 2>/dev/null || true
    done
    echo "All services stopped."
}

handle_exit() {
    if [ -n "${FAILED_NAME}" ]; then
        echo "Service ${FAILED_NAME} exited with status ${FAILED_STATUS}."
    fi
    shutdown_services
    exit "${FAILED_STATUS}"
}

on_signal() {
    echo "Caught signal, shutting down services..."
    FAILED_NAME="signal"
    FAILED_STATUS=143
    handle_exit
}

trap on_signal INT TERM

[ ! -d "${NETALERTX_PLUGINS_LOG}" ] && mkdir -p "${NETALERTX_PLUGINS_LOG}"
[ ! -f "${LOG_DB_IS_LOCKED}" ] && touch "${LOG_DB_IS_LOCKED}"
[ ! -f "${LOG_EXECUTION_QUEUE}" ] && touch "${LOG_EXECUTION_QUEUE}"

add_service "/services/start-crond.sh" "crond"
add_service "/services/start-php-fpm.sh" "php-fpm"
add_service "/services/start-nginx.sh" "nginx"
add_service "/services/start-backend.sh" "backend"

while [ -n "${SERVICES}" ]; do
    for entry in ${SERVICES}; do
        pid="${entry%%:*}"
        name="${entry#*:}"
        [ -z "${pid}" ] && continue
        if ! kill -0 "${pid}" 2>/dev/null; then
            wait "${pid}" 2>/dev/null
            status=$?
            FAILED_STATUS=$status
            FAILED_NAME="${name}"
            remove_service "${pid}"
            handle_exit
        fi
    done
    sleep 1
done