## library functions

function install_pacapt {
  if [[ $DISTRO == 'arch' ]]; then
    PACMAN_CMD=$(which pacman)
    echo 'pacman natively detected!'
  else
    if [[ ! -f $HOME/.local/bin/pacman ]]; then
      [[ $DISTRO == 'debian' ]] && apt install -y apt-utils
      mkdir -p $HOME/.local/bin
      curl -sLo $HOME/.local/bin/pacman https://github.com/icy/pacapt/raw/ng/pacapt
      chmod 755 $HOME/.local/bin/pacman
      echo "pacapt/pacman ($PACMAN_CMD) successfully installed!"
    fi
    PACMAN_CMD="$HOME/.local/bin/pacman"
  fi
}

function install_idem_packages {
  if ! pacman -Qi $1 &>/dev/null; then
    sudo $HOME/.local/bin/pacman -S --noconfirm $1 >/dev/null
    echo "$2 installed successfully"
  else
    echo "$2 already installed!"
  fi
}

function install_packages {
  install_idem_packages "${DISTRO_PACKAGES[_]}" "generic packages"
  [ -v "DISTRO_PACKAGES[${DISTRO}]" ] && install_idem_packages "${DISTRO_PACKAGES[${DISTRO}]}" "distro specific packages: [$DISTRO]"
  true
}

function postgres_newdb {
  if ! (sudo -u postgres -- psql --csv -tc "SELECT 1 as found FROM pg_roles WHERE rolname = '$DB_USER'" | grep -q ^1$); then
    sudo -iu postgres psql -c "CREATE USER $DB_USER WITH PASSWORD '$DB_USER'"
    sudo -iu postgres psql -c "ALTER USER $DB_USER WITH SUPERUSER"
  fi
}