# Class to install and configure ISC Kea DHCP service.
# Check https://kb.isc.org/docs/kea-configuration-sections-explained for details
# for each parameter.
#
# [*ensure*]
#   present or absent. Default: present
#
# [*dhcp4_conf*]
#   Hash with the DHCP 4 service configuration.
#
# [*dhcp6_conf*]
#   Hash with the DHCP 4 service configuration.
#
# [*ddns_conf*]
#   Hash with the Dynamic DNS configuration.
#
# [*ctrl_agent_conf*]
#   Hash with the Control Agent configuration.
#
# [*api_password*]
#   (Sensitive) String API password.
#
class kea (
  String $ensure = 'present',
  Hash $dhcp4_conf = {},
  Hash $dhcp6_conf = {},
  Hash $ddns_conf = {},
  Hash $ctrl_agent_conf = {},
  Sensitive[String[1]] $api_password = '',
) {
  case $ensure {
    default: {
      $package_ensure = 'latest'
      $directory_ensure = 'directory'
      $link_ensure = 'link'
      $service_ensure = 'running'
    }
    /^(absent|delete|uninstall|remove|unregister)$/: {
      $package_ensure = 'absent'
      $directory_ensure = 'absent'
      $link_ensure = 'absent'
      $service_ensure = 'stopped'
    }
  }
  package { 'kea':
    ensure => $package_ensure,
  }
  file { '/etc/kea/kea-api-password':
    ensure  => $ensure,
    content => $api_password,
    mode    => '0640',
    require => Package['kea'],
    notify  => Service['kea'],
  }
  file { '/etc/kea/kea-dhcp4.conf':
    ensure  => $ensure,
    content => to_json($dhcp4_conf),
    mode    => '0644',
    require => Package['kea'],
    notify  => Service['kea'],
  }
  file { '/etc/kea/kea-dhcp6.conf':
    ensure  => $ensure,
    content => to_json($dhcp6_conf),
    mode    => '0644',
    require => Package['kea'],
    notify  => Service['kea'],
  }
  file { '/etc/kea/kea-dhcp-ddns.conf':
    ensure  => $ensure,
    content => to_json($ddns_conf),
    mode    => '0644',
    require => Package['kea'],
    notify  => Service['kea'],
  }
  file { '/etc/kea/kea-ctrl-agent.conf':
    ensure  => $ensure,
    content => to_json($ctrl_agent_conf),
    mode    => '0644',
    require => Package['kea'],
    notify  => Service['kea'],
  }
  service { 'kea':
    ensure  => $service_ensure,
    require => Package['kea'],
  }
}