#!/usr/bin/with-contenv bash
# shellcheck shell=bash

DEFAULT_WATCH=()
mapfile -t DEFAULT_WATCH < <(find /config/nginx -type f -name '*.conf' -print)
DEFAULT_WATCH+=("/config/nginx/proxy-confs" "/config/nginx/site-confs")

# start with an empty array for active watch
ACTIVE_WATCH=()
echo "MOD Auto-reload: Watching the following files/folders for changes"
for i in "${DEFAULT_WATCH[@]}"; do
  if [ -f "${i}" ] || [ -d "${i}" ]; then
    echo "${i}"
    ACTIVE_WATCH+=("${i}")
  fi
done
for i in $(echo "${WATCHLIST}" | tr "|" " "); do
  if [ -f "${i}" ] || [ -d "${i}" ]; then
    echo "${i}"
    ACTIVE_WATCH+=("${i}")
  fi
done

function wait_for_changes {
  inotifywait -rq \
    --event modify,move,create,delete \
    "${ACTIVE_WATCH[@]}"
}

while wait_for_changes; do
  NGINX_CONF=()
  if ! grep -q "/config/nginx/nginx.conf" /etc/nginx/nginx.conf; then
    NGINX_CONF=("-c" "/config/nginx/nginx.conf")
  fi
  if /usr/sbin/nginx "${NGINX_CONF[@]}" -t; then
    echo "Changes to nginx config detected and the changes are valid, reloading nginx"
    /usr/sbin/nginx "${NGINX_CONF[@]}" -s reload
  else
    echo "Changes to nginx config detected but the changes are not valid, skipping nginx reload. Please fix your config."
  fi
done