#!/bin/bash

set -e

if [ "$EUID" -ne 0 ]; then
  echo "Please run as root"
  exit
fi

source .env
source .env_cnf

out_dir=/etc/freeradius

echo "Installing packages..."
apt-get update
apt-get install -y apt-transport-https ca-certificates curl

echo "Registering Gitea Debian registry..."
DEB_REGISTRY="${DEB_REGISTRY:-https://git.ahax86.ru/api/packages/pub/debian}"
DEB_DISTRIBUTION="${DEB_DISTRIBUTION:-noble}"
DEB_COMPONENT="${DEB_COMPONENT:-main}"

install -d /etc/apt/keyrings
curl -fsSL "${DEB_REGISTRY}/repository.key" -o /etc/apt/keyrings/gitea-pub.asc

apt_list=/etc/apt/sources.list.d/gitea-freeradius.list
if [ -n "${DEB_AUTH:-}" ]; then
  # Private registry: embed "user:token" in the source URL (file kept root-only).
  apt_uri="${DEB_REGISTRY%%://*}://${DEB_AUTH}@${DEB_REGISTRY#*://}"
  echo "deb [signed-by=/etc/apt/keyrings/gitea-pub.asc] ${apt_uri} ${DEB_DISTRIBUTION} ${DEB_COMPONENT}" >"$apt_list"
  chmod 600 "$apt_list"
else
  echo "deb [signed-by=/etc/apt/keyrings/gitea-pub.asc] ${DEB_REGISTRY} ${DEB_DISTRIBUTION} ${DEB_COMPONENT}" >"$apt_list"
fi

echo "Installing freeradius ${FREERADIUS_TAG}..."
apt-get update && apt-get install -y libfreeradius3=${FREERADIUS_TAG}+git freeradius-common=${FREERADIUS_TAG}+git \
    freeradius-postgresql=${FREERADIUS_TAG}+git freeradius-rest=${FREERADIUS_TAG}+git \
    freeradius-utils=${FREERADIUS_TAG}+git freeradius=${FREERADIUS_TAG}+git
apt-mark hold libfreeradius3 freeradius-common freeradius-postgresql freeradius-rest freeradius-utils freeradius

echo "Stopping service..."
service freeradius stop

echo "Chowning..."
chown -R freerad:root /etc/freeradius

## write configs
sed -e "s/#MAIN_PORT#/${FR_MAIN_PORT}/" -e "s/#ACC_PORT#/${FR_ACC_PORT}/" config/sites-enabled/default >$out_dir/sites-enabled/default
sed -e "s/#API_HOST#/${FR_API_HOST}/" -e "s/#API_PORT#/${FR_API_PORT}/" config/mods-enabled/rest >$out_dir/mods-enabled/rest
sed -e "s/#PG_HOST#/${FR_PG_HOST}/" -e "s/#PG_PORT#/${FR_PG_PORT}/" -e "s/#PG_USER#/${FR_PG_USER}/" -e "s/#PG_PASS#/${FR_PG_PASS}/" -e "s/#PG_DB#/${FR_PG_DB}/" config/mods-enabled/sql >$out_dir/mods-enabled/sql

## copy dict
echo "Copy unmodified configs"
cp config/radiusd.conf $out_dir/radiusd.conf
cp config/dictionary $out_dir/dictionary
cp config/clients.conf $out_dir/clients.conf
cp config/mods-enabled/raw $out_dir/mods-enabled/raw
cp config/sites-enabled/dynamic-clients $out_dir/sites-enabled/dynamic-clients
rm -f /etc/freeradius/sites-enabled/inner-tunnel
rm -f /etc/freeradius/mods-enabled/eap
rm -f /etc/freeradius/mods-enabled/proxy_rate_limit

## Enable delay_Reject
echo "Enable delay_reject"
rm -f /etc/freeradius/mods-enabled/delay
ln -s $out_dir/mods-available/delay $out_dir/mods-enabled/delay

## fix permissions
echo "Fixing permissions..."
chmod -R 750 $out_dir && chown -R freerad:root $out_dir

## Update systemd service
if [[ -d /run/systemd/system ]]; then
  echo "Updating systemd service"
  cp config/systemd/freeradius.service /lib/systemd/system/freeradius.service && chmod u+rw-x,go+r-wx /lib/systemd/system/freeradius.service && chown root: /lib/systemd/system/freeradius.service
  systemctl daemon-reload

  echo "Restarting server..."
  service freeradius restart
else
  echo "Skipping systemd modify..."
fi

## add crontab
if ! grep -q radius-renew.sh "/etc/crontab"; then
  echo "Add crontab renew"
  cp cron/radius-renew.sh /opt && chmod a+x /opt/radius-renew.sh && chown root: /opt/radius-renew.sh
  echo "0 1 1 */1 * root bash /opt/radius-renew.sh" >> /etc/crontab
else
  echo "Crontab already set"
fi

echo "Freeradius installed!"