#
#
# $enable_lb_bigip: enable the F5 load-balancer control interface. Usually only on
# replicas.
#
# $enable_lbcd: enable LBCD, that is, the LBDNS performance polling client. Usually only on
# replicas.
#
##################################################################################
#
# Possible parameters:
#
#  - which flavor of OpenLDAP package to install
#  - install sync scripts
#  - authentication methods
#  - support whois
#  - hosting model
#  - where do we store the LDAP databases and log files
#  - do we enable bundle remctl service?
#
# Another consideration is where we build the ldap-tools servers from.
# They take only the ldap-utils, libldap, libnet-ldap-perl,
# libnet-ldapapi-perl, libstanford-ldapadmin-perl, libstanford-ldapserver-perl,
# python-ldap, the passive monitoring script(s) and the sync scripts

# $distribution: A valid Debian distribution. See the file apt_setup for
#   more information and examples.
#
# $repository: If the package is found in a non-standard location,
#   you can indicate the repository here. See the file apt_setup for
#   more information and examples.
#
class su_ldap (
  $hosting_model = 'traditional',
  #
  $auth_gssapi    = true,
  $auth_simple    = true,
  #
  $ldap_debian_distribution = 'stretch',
  $ldap_debian_archive      = 'debian-stanford',
  $ldap_debian_repository   = undef,
  $sasl_debian_distribution = 'stretch',
  $sasl_debian_archive      = 'debian-stanford',
  $sasl_debian_repository   = undef,
  #
  $keytab_path = '/etc/krb5.keytab',
  #
  $port_389_cidrs = [],
  $port_636_cidrs = [],
  #
  Boolean $enable_whois = false,
  #
  Boolean $enable_lb_bigip = false,
  Boolean $enable_lbcd     = false,
){

  ## ERROR CHECKING ##
  if !($hosting_model in [ 'traditional', 'container', 'tools' ]) {
      fail("Unknown hosting model ${hosting_model}")
  }

  ## APT SETUP ##
  # APT setup needs to be run before anything else, so
  # we ensure this using Puppet "stages":
  stage { 'apt':
    before => Stage['main'],
  }

  # Install apt files so we load the correct version of OpenLDAP. Run in the
  # "apt" stage so that it gets run first.
  class { 'su_ldap::apt_setup':
    stage                    => apt,
    ldap_debian_distribution => $ldap_debian_distribution,
    ldap_debian_archive      => $ldap_debian_archive,
    ldap_debian_repository   => $ldap_debian_repository,
    sasl_debian_distribution => $sasl_debian_distribution,
    sasl_debian_archive      => $sasl_debian_archive,
    sasl_debian_repository   => $sasl_debian_repository,
  }

  ## PACKAGE SETUP ##
  include su_ldap::packages


  ## Basic configuration: /etc/ldap/ldap.conf, /etc/default/slapd, et al.

  # Make sure /etc/ldap exists and is a directory.
  file { '/etc/ldap':
    ensure => directory,
    owner  => 'root',
    group  => 'root',
    mode   => '0755',
  }

  class { 'su_ldap::config':
    hosting_model => $hosting_model,
    keytab_path   => $keytab_path,
  }

  ## We don't install the sync scripts in this class. If they are needed,
  ## use the su_ldap::sync_scripts class.

  ## We don't install the certificate in this class. Instead, call the
  ## su_ldap::certificate from the class that call 'su_ldap'.

  ## Authentication methods (simple bind and GSSAPI)
  class { 'su_ldap::authentication':
    auth_gssapi => $auth_gssapi,
    auth_simple => $auth_simple,
  }

  if ($hosting_model == 'traditional') {
    class { 'su_ldap::traditional':
      keytab_path    => $keytab_path,
      port_389_cidrs => $port_389_cidrs,
      port_636_cidrs => $port_636_cidrs,
    }
  }

  ## Various optional services
  if ($enable_whois) {
    class { 'su_ldap::config::whoisd':
      ensure => present
    }
  } else {
    class { 'su_ldap::config::whoisd':
      ensure => absent
    }
  }

  # Hardware (F5) load-balancing API support.
  if ($enable_lb_bigip) {
    lb::bigip { 'ldap':
      ensure        => present,
      bigip_service => 'ldap-${env}',
      remctl_cmd    => 'ldap-bigip',
      signal_port   => '8389',
    }
    file { '/etc/bigip/bigip.conf':
      ensure => present,
      mode   => '0664',
      source => 'puppet:///modules/su_ldap/etc/bigip/bigip.conf',
    }
  } else {
    lb::bigip { 'ldap':
      ensure => absent,
    }
    file { '/etc/bigip/bigip.conf':
      ensure => absent,
    }
  }

  # LBDNS (software load-balancing)
  if ($enable_lbcd) {
    class { 'su_ldap::lbcd':
      ensure => 'present',
    }
  } else {
    class { 'su_ldap::lbcd':
      ensure => 'absent',
    }
  }

}