#!/bin/bash

declare -l codename
declare -l omvCodename
declare -l omvInstall=""
declare -i version

omvKey="/etc/apt/trusted.gpg.d/openmediavault-archive-keyring.asc"
omvRepo="http://packages.openmediavault.org/public"
omvSources="/etc/apt/sources.list.d/openmediavault.list"
url="https://github.com/OpenMediaVault-Plugin-Developers/packages/raw/master/"

export DEBIAN_FRONTEND=noninteractive
export APT_LISTCHANGES_FRONTEND=none
export LANG=C.UTF-8

codename="$(lsb_release --codename --short)"

case ${codename} in
  jessie)
    omvCodename="erasmus"
    version=3
    ;;
  stretch)
    omvCodename="arrakis"
    version=4
    ;;
  buster)
    omvCodename="usul"
    version=5
    ;;
  *)
    echo "Unsupported version.  Exiting..."
    exit 1
  ;;
esac
echo "${omvCodename} :: ${version}"

# install openmediavault if not installed already
omvInstall=$(dpkg -l | awk '$2 == "openmediavault" { print $1 }')
if [[ ! "${omvInstall}" == "ii" ]]; then
  echo "Installing openmediavault required packages..."
  if ! apt-get --yes --no-install-recommends install postfix; then
    echo "failed installing postfix"
    exit 2
  fi

  echo "Adding openmediavault repo and key..."
  echo "deb ${omvRepo} ${omvCodename} main" > ${omvSources}
  wget -O "${omvKey}" ${omvRepo}/archive.key
  apt-key add "${omvKey}"

  echo "Updating repos..."
  if ! apt-get update; then
    echo "failed to update apt repos."
    exit 2
  fi

  echo "Install openmediavault-keyring..."
  if ! apt-get --yes install openmediavault-keyring; then
    echo "failed to install openmediavault-keyring package."
    exit 2
  fi

  echo "Installing openmediavault..."
  aptFlags="--yes --auto-remove --show-upgraded --allow-downgrades --allow-change-held-packages --no-install-recommends"
  cmd="apt-get ${aptFlags} install openmediavault"
  if ! ${cmd}; then
    echo "failed to install openmediavault package."
    exit 2
  fi

  if [ ${version} -eq 5 ]; then
    omv-confdbadm populate
  elif [ ${version} -lt 5 ]; then
    omv-initsystem
    omv-mkconf interfaces
    omv-mkconf issue
  fi
fi

omvInstall=$(dpkg -l | awk '$2 == "openmediavault" { print $1 }')
if [[ ! "${omvInstall}" == "ii" ]]; then
  echo "openmediavault package failed to install or is in a bad state."
  exit 3
fi

if [ ${version} -eq 5 ]; then
  echo "Downloading omv-extras.org plugin for openmediavault 5.x ..."
  file="openmediavault-omvextrasorg_latest_all5.deb"
elif [ ${version} -eq 4 ]; then
  echo "Downloading omv-extras.org plugin for openmediavault 4.x ..."
  file="openmediavault-omvextrasorg_latest_all4.deb"
elif [ ${version} -eq 3 ]; then
  echo "Downloading omv-extras.org plugin for openmediavault 3.x ..."
  file="openmediavault-omvextrasorg_latest_all3.deb"
else
  echo "Unsupported version of openmediavault"
  exit 1
fi

if [ -f "${file}" ]; then
  rm ${file}
fi
wget --no-check-certificate ${url}/${file}
if [ -f "${file}" ]; then
  if ! dpkg --install ${file}; then
    echo "Installing other dependencies ..."
    apt-get --fix-broken install
  fi

  echo "Updating repos ..."
  apt-get update
else
  echo "There was a problem downloading the package."
fi

exit 0