#!/usr/bin/env bash

set -eu

die() {
    echo >&2 "$@"
    exit 1
}

about() {
    die "usage: $0 [ start | stop ]"
}

#shellcheck disable=SC1007
THIS_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
#shellcheck disable=SC1090
. "${THIS_DIR}/.environment.sh"

# you have not removed set -u above, have you?

[ -z "${BIN_DIR-}" ] && die "\$BIN_DIR must be defined."
[ -z "${LOG_DIR-}" ] && die "\$LOG_DIR must be defined."
[ -z "${PID_DIR-}" ] && die "\$PID_DIR must be defined."

if [ ! -e "${BIN_DIR}/crowdsec" ]; then
    die "${BIN_DIR}/crowdsec is missing. Please run 'make bats-build' to create it."
fi

wait_for_port() {
    for _ in $(seq 40); do
        nc -z localhost "$1" && return
        sleep .05
    done

    # send to &3 if open
    if { true >&3; } 2>/dev/null; then
        # cat "${LOG_DIR}/crowdsec.out" >&3
        # cat "${LOG_DIR}/crowdsec.log" >&3
        echo "Can't connect to port $1" >&3
    else
        # cat "${LOG_DIR}/crowdsec.out" >&2
        # cat "${LOG_DIR}/crowdsec.log" >&2
        echo "Can't connect to port $1" >&2
    fi

    return 1
}

DAEMON_PID=${PID_DIR}/crowdsec.pid

start_instance() {
    OUT_FILE="${LOG_DIR}/crowdsec.out" \
        DAEMON_PID="${DAEMON_PID}" \
        "${TEST_DIR}/run-as-daemon" "${BIN_DIR}/crowdsec"
    wait_for_port 6060
}

stop_instance() {
    if [ -f "${DAEMON_PID}" ]; then
       # terminate quickly with extreme prejudice, all the application data will be
       # thrown away anyway. also terminate the child processes (notification plugin).
       PGID="$(ps --no-headers -p "$(cat "${DAEMON_PID}")" -o pgid | tr -d ' ')"
       if [ -n "${PGID}" ]; then
           kill -- "-${PGID}"
       fi
       rm -f -- "${DAEMON_PID}"
    fi
}


# ---------------------------

[ $# -lt 1 ] && about

case "$1" in
    start)
        start_instance
        ;;
    stop)
        stop_instance
        ;;
    *)
        about
        ;;
esac;