#!/usr/bin/env bash

set -e # Exit if any of the steps fails.

if [[ $EUID -ne 0 ]]; then
  echo "Please run as root user."
  exit 1
fi

getStorDirFromDatabase() {
  sudo -u postgres psql -d airtime -tAc "SELECT directory FROM cc_music_dirs WHERE type='stor'"
}

dropLibreTimeDatabase() {
  sudo -u postgres psql -d postgres -tAc "DROP DATABASE IF EXISTS airtime_test"
  sudo -u postgres psql -d postgres -tAc "DROP DATABASE IF EXISTS airtime"
  sudo -u postgres psql -d postgres -tAc "DROP USER IF EXISTS airtime"
}

removeRabbitmqLibreTimeSettings() {
  if [ -f /etc/airtime/airtime.conf ]; then
    RMQ_VHOST=$(awk -F ' = ' '{if (! ($0 ~ /^;/) && $0 ~ /^vhost/ ) print $2}' /etc/airtime/airtime.conf)
    RMQ_USER=$(awk -F ' = ' '{if (! ($0 ~ /^;/) && $0 ~ /^user/ ) print $2}' /etc/airtime/airtime.conf)
  else
    RMQ_VHOST=/airtime
    RMQ_USER=airtime
  fi

  rabbitmqctl delete_vhost ${RMQ_VHOST}
  rabbitmqctl delete_user ${RMQ_USER}
}

STOR_DIR=$(getStorDirFromDatabase)

FILES=(
  "/etc/airtime"
  "/var/log/airtime"
  "/usr/lib/airtime"
  "/usr/share/airtime"
  "/etc/init/airtime*"
  "/etc/systemd/system/libretime*"
  "/usr/local/bin/airtime-*"
  "/usr/bin/airtime*"
  "/etc/apache2/sites-available/airtime*"
  "/etc/apache2/sites-enabled/airtime*"
)

echo -e "The following files, directories, and services will be removed:\n"
for i in "${FILES[@]}"; do
  echo "$i"
done
echo "pip3 libretime-playout"

echo -e "\nIf your web root is not listed, you will need to manually remove it."

echo -e "\nThis will *permanently* remove LibreTime and all related files from your computer. \
Any files in LibreTime directories and subdirectories will be deleted. Are you sure you want to proceed? [y/N]: \c"
read -r IN
if [[ ! ($IN == "y" || $IN == "Y") ]]; then
  exit 0
fi

if [ -n "${STOR_DIR}" ]; then
  echo -e "\nDo you want to remove your music storage directory ${STOR_DIR} and all of its subdirectories? [y/N]: \c"
  read -r IN
  if [[ $IN == "y" || $IN == "Y" ]]; then
    rm -rf "${STOR_DIR}"
  fi
else
  echo -e "\nNo stor directory found, skipping..."
fi

echo -e "\nUninstalling LibreTime..."
systemctl stop libretime-celery
set +e
removeRabbitmqLibreTimeSettings
set -e

for i in "${FILES[@]}"; do
  rm -rf "$i"
done

echo -e "\nDo you want to drop your current LibreTime database? [y/N]: \c"
read -r IN
if [[ $IN == "y" || $IN == "Y" ]]; then
  echo -e "\nDropping LibreTime database..."
  dropLibreTimeDatabase
fi

pip3 uninstall -y libretime-playout airtime-media-monitor airtime-analyzer
service apache2 restart
echo "...Done"