#!/usr/bin/env bash

set -eu

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

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

#shellcheck disable=SC1007
THIS_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
cd "$THIS_DIR"
# shellcheck disable=SC1091
. ./.environment.sh

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

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

if ! command -v python3 >/dev/null 2>&2; then
    die "The python3 executable is is missing. Please install it and try again."
fi

DAEMON_PID=${PID_DIR}/mock-http.pid

start_instance() {
    [[ $# -lt 1 ]] && about
    daemonize \
        -p "$DAEMON_PID" \
        -e "${LOG_DIR}/mock-http.err" \
        -o "${LOG_DIR}/mock-http.out" \
        /usr/bin/env python3 -u "${THIS_DIR}/bin/mock-http.py" "$1"
    ./bin/wait-for-port "$1"
#    echo "mock http started on port $1"
}

stop_instance() {
    if [[ -f "$DAEMON_PID" ]]; then
        # terminate with extreme prejudice, all the application data will be thrown away anyway
        kill -9 "$(cat "$DAEMON_PID")" > /dev/null 2>&1
        rm -f -- "$DAEMON_PID"
    fi
}


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

[[ $# -lt 1 ]] && about

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