#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
RUN_DIR="$ROOT_DIR/run"
PID_FILE="$RUN_DIR/hy-app-monitor.pid"
LOG_FILE="$RUN_DIR/hy-app-monitor.log"
APP_BIND="${APP_BIND:-0.0.0.0}"
APP_PORT="${APP_PORT:-6666}"
PYTHON_BIN="${PYTHON_BIN:-python3}"
TARGETS_FILE="${TARGETS_FILE:-$ROOT_DIR/config/targets.json}"

mkdir -p "$RUN_DIR"

read_pid() {
  if [ -f "$PID_FILE" ]; then
    cat "$PID_FILE"
  fi
}

is_running() {
  local pid
  pid="$(read_pid || true)"
  if [ -z "${pid:-}" ]; then
    return 1
  fi
  kill -0 "$pid" >/dev/null 2>&1
}