#
# Author:: Jason Field
#
# Copyright:: 2018, Calastone Ltd.
# Copyright:: Copyright (c) Chef Software Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

require_relative "../resource"

class Chef
  class Resource
    class WindowsDfsServer < Chef::Resource
      unified_mode true

      provides :windows_dfs_server

      description "Use the **windows_dfs_server** resource to set system-wide DFS settings."
      introduced "15.0"

      property :use_fqdn, [TrueClass, FalseClass],
        description: "Indicates whether a DFS namespace server uses FQDNs in referrals. If this property is set to true, the server uses FQDNs in referrals. If this property is set to false then the server uses NetBIOS names.",
        default: false

      property :ldap_timeout_secs, Integer,
        description: "",
        default: 30

      property :prefer_login_dc, [TrueClass, FalseClass],
        description: "",
        default: false

      property :enable_site_costed_referrals, [TrueClass, FalseClass],
        description: "",
        default: false

      property :sync_interval_secs, Integer,
        description: "",
        default: 3600

      load_current_value do
        ps_results = powershell_exec("Get-DfsnServerConfiguration -ComputerName '#{ENV["COMPUTERNAME"]}' | Select LdapTimeoutSec, PreferLogonDC, EnableSiteCostedReferrals, SyncIntervalSec, UseFqdn")

        if ps_results.error?
          raise "The dfs_server resource failed to fetch the current state via the Get-DfsnServerConfiguration PowerShell cmdlet. Is the DFS Windows feature installed?"
        end

        Chef::Log.debug("The Get-DfsnServerConfiguration results were #{ps_results.result}")
        results = ps_results.result

        use_fqdn results["UseFqdn"] || false
        ldap_timeout_secs results["LdapTimeoutSec"]
        prefer_login_dc results["PreferLogonDC"] || false
        enable_site_costed_referrals results["EnableSiteCostedReferrals"] || false
        sync_interval_secs results["SyncIntervalSec"]
      end

      action :configure do
        description "Configure DFS settings."

        converge_if_changed do
          dfs_cmd = "Set-DfsnServerConfiguration -ComputerName '#{ENV["COMPUTERNAME"]}' -UseFqdn $#{new_resource.use_fqdn} -LdapTimeoutSec #{new_resource.ldap_timeout_secs} -SyncIntervalSec #{new_resource.sync_interval_secs}"
          dfs_cmd << " -EnableSiteCostedReferrals $#{new_resource.enable_site_costed_referrals}" if new_resource.enable_site_costed_referrals != current_resource.enable_site_costed_referrals
          dfs_cmd << " -PreferLogonDC $#{new_resource.prefer_login_dc}" if new_resource.prefer_login_dc != current_resource.prefer_login_dc
          powershell_exec!(dfs_cmd)
        end
      end
    end
  end
end