#!/bin/sh

sed -i "s,\${REGISTRY_URL},${REGISTRY_URL}," index.html
sed -i "s,\${REGISTRY_TITLE},${REGISTRY_TITLE}," index.html
sed -i "s,\${PULL_URL},${PULL_URL}," index.html
sed -i "s,\${SINGLE_REGISTRY},${SINGLE_REGISTRY}," index.html
sed -i "s/\${CATALOG_ELEMENTS_LIMIT}/${CATALOG_ELEMENTS_LIMIT}/" index.html
sed -i "s/\${SHOW_CONTENT_DIGEST}/${SHOW_CONTENT_DIGEST}/" index.html

if [ -z "${DELETE_IMAGES}" ] || [ "${DELETE_IMAGES}" = false ] ; then
  sed -i "s/\${DELETE_IMAGES}/false/" index.html
else
  sed -i "s/\${DELETE_IMAGES}/true/" index.html
fi

get_nginx_proxy_headers() {
  (
    env &&
    if [ -f "/etc/nginx/.env" ]; then
      cat /etc/nginx/.env
      # Force new line
      echo ""
    fi
  ) | while read e; do
    if [ -n "$(echo $e | grep -o '^NGINX_PROXY_HEADER_')" ]; then
      key=$(echo ${e%%=*} | sed 's/^NGINX_PROXY_HEADER_//' | sed 's/_/-/g')
      value=${e#*=}
      echo -n "proxy_set_header ${key} \"${value}\"; "
    fi
  done
}

if [ -n "${NGINX_PROXY_PASS_URL}" ] ; then
  sed -i "s,\${NGINX_PROXY_PASS_URL},${NGINX_PROXY_PASS_URL}," /etc/nginx/conf.d/default.conf
  sed -i "s^\${NGINX_PROXY_HEADERS}^$(get_nginx_proxy_headers)^" /etc/nginx/conf.d/default.conf
  sed -i "s,#!,," /etc/nginx/conf.d/default.conf
fi