install

#!/bin/bash

if [ -t 1 ]
then
  # Some colors
  declare -A colors
  colors[none]="\e[0m"
  colors[red]="\e[31m"
  colors[green]="\e[32m"
  colors[yellow]="\e[33m"
  colors[blue]="\e[34m"
  colors[magenta]="\e[35m"
  colors[cyan]="\e[36m"
  colors[lightgray]="\e[37m"
  colors[white]="\e[97m"
fi
_scriptRoot="$(dirname $(realpath $0))"

  # Used for updating the conf file

conf="/etc/zfsUnlocker/zfsUnlocker.conf"
head="#$(git -C "$_scriptRoot" rev-parse HEAD)"
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"


 # Check if we need sudo
[[ $UID != 0  ]] && SUDO=`which sudo`

$SUDO mkdir -p /etc/zfsUnlocker
$SUDO rsync -r --delete $DIR/modules.d  /etc/zfsUnlocker/


if [ -f "$conf" ]
then
  if [ "$head" != "$($SUDO head -n1 "$conf")" ] || [[ "$@" == *"force"* ]] # If different commit/version of the script detected, rebuild the conf.
  then
    writeConf=1
    echo "Installing new version, existing conf will be renamed and replaced."
    confBak="${conf}_$(date +%s).bak"
    $SUDO mv -v "$conf" "$confBak"
  fi
else
  writeConf=1
  echo -e "\nBefore using this make sure you setup $conf."
fi

if [ -n "$writeConf" ]
then
  echo "${head}" | $SUDO tee -a "${conf}" > /dev/null
  $SUDO chown root:root $conf ; $SUDO chmod 600 $conf
fi


echo "Evaluating module package dependencies"
moduleBasedir="/etc/zfsUnlocker/modules.d"
modules="$(ls -1v $moduleBasedir| grep -v disabled)" 

# We need 'which'
which -v >/dev/null 2>&1 || yes | sudo pacman -S which

for module in $modules
do

  if [ -f ${moduleBasedir}/${module}/packageDependencies ]
  then
    echo "${module}:"
    while read packageDependency
    do
      echo -ne '\t'
      pacman -Q $packageDependency || yes | sudo pacman --noconfirm -S "$packageDependency"
    done < ${moduleBasedir}/${module}/packageDependencies
  fi

  if [ -n "$writeConf" ]
  then
    echo "#${module}" | $SUDO tee -a "${conf}" > /dev/null
    cat ${moduleBasedir}/${module}/configVars | $SUDO tee -a "${conf}" > /dev/null
    echo "" | $SUDO tee -a "${conf}" # spacer
  fi
  
done

 
  

$SUDO cp $DIR/zfsUnlocker.hook    /usr/lib/initcpio/hooks/zfsUnlocker
$SUDO cp $DIR/zfsUnlocker.install /usr/lib/initcpio/install/zfsUnlocker


find /etc/zfsUnlocker -type f -name 'hook' -exec $SUDO chmod 740 "{}" \;


# Append custom variables from previous file.
if [ -n "${confBak}" ]
then
    variableDifferences="$(comm -23 <($SUDO grep -v '^#' "${confBak}" | sort -u) <($SUDO grep -v '^#' "${conf}" | sort -u))"
    if [ -n "${variableDifferences}" ]
    then
      echo -e "${colors[red]}Old ${colors[none]}${conf}${colors[red]} moved to ${colors[none]}${confBak}${colors[red]}.${colors[none]}"
      echo -e "${colors[red]}The script will attempt to append previously used variables to this new config. Please review the content before continuing.${colors[none]}"

      echo -e "Appending previous config..."
      echo "# Configuration copied from previous version [$($SUDO head -n1 ${confBak})] [${confBak}]:" | $SUDO tee -a "${conf}"
      echo "${variableDifferences}" | $SUDO tee -a "${conf}"
    fi
fi