# Class: apt
#
# This module manages the initial configuration of apt.
#
# Parameters:
#   Both of the parameters listed here are not required in general and were
#     added for use cases related to development environments.
#   disable_keys - disables the requirement for all packages to be signed
#   always_apt_update - rather apt should be updated on every run (intended
#     for development environments where package updates are frequent
# Actions:
#
# Requires:
#
# Sample Usage:
#  class { 'apt': }
class apt(
  $always_apt_update = false,
  $disable_keys = undef,
  $proxy_host = false,
  $proxy_port = '8080',
  $purge = false
) {

  include apt::params

  validate_bool($purge)

  $refresh_only_apt_update = $always_apt_update? {
    true => false,
    false => true
  }

  if ! defined(Package["python-software-properties"]) {
    package { "python-software-properties": }
  }

  file { "sources.list":
    path => "${apt::params::root}/sources.list",
    ensure => present,
    owner => root,
    group => root,
    mode => 644,
    content => $purge ? {
      false =>  undef,
      true  => "# Repos managed by puppet.\n",
    },
  }

  file { "sources.list.d":
    path => "${apt::params::root}/sources.list.d",
    ensure => directory,
    owner => root,
    group => root,
    purge => $purge,
    recurse => $purge,
  }

  exec { "apt_update":
    command => "${apt::params::provider} update",
    subscribe => [ File["sources.list"], File["sources.list.d"] ],
    refreshonly => $refresh_only_apt_update,
  }

  case $disable_keys {
    true: {
      file { "99unauth":
        content => "APT::Get::AllowUnauthenticated 1;\n",
        ensure  => present,
        path    => "/etc/apt/apt.conf.d/99unauth",
      }
    }
    false: {
      file { "99unauth":
        ensure => absent,
        path   => "/etc/apt/apt.conf.d/99unauth",
      }
    }
    undef: { } # do nothing
    default: { fail("Valid values for disable_keys are true or false") }
  }

  if($proxy_host) {
    file { 'configure-apt-proxy':
      path    => '/etc/apt/apt.conf.d/proxy',
      content => "Acquire::http::Proxy \"http://${proxy_host}:${proxy_port}\";",
    }
  }
}