set -x
set -e

export DEBIAN_FRONTEND="noninteractive"

apt-get -y update

<% if !@apt[:install].nil? -%>
<% @apt[:install].flatten.compact.each do |package| -%>
dpkg --status <%= package %> &> /dev/null || apt-get -y install <%= package %>
<% end -%>
<% end -%>

<% if !@apt[:remove].nil? -%>
<% @apt[:remove].flatten.compact.each do |package| -%>
dpkg --status <%= package %> &> /dev/null && apt-get -y remove <%= package %>
<% end -%>
<% end -%>

<% if !@apt[:purge].nil? -%>
<% @apt[:purge].flatten.compact.each do |package| -%>
dpkg --status <%= package %> &> /dev/null && apt-get -y purge <%= package %>
<% end -%>
<% end -%>