#  Created by Luke Kanies on 2007-11-27.
#  Copyright (c) 2007. All rights reserved.

require 'puppet'
require 'puppet/provider/parsedfile'
require 'puppet/external/nagios'

# The base class for all Naginator providers.
class Puppet::Provider::Naginator < Puppet::Provider::ParsedFile
    NAME_STRING = "## --PUPPET_NAME-- (called '_naginator_name' in the manifest)"
    # Retrieve the associated class from Nagios::Base.
    def self.nagios_type
        unless defined?(@nagios_type) and @nagios_type
            name = resource_type.name.to_s.sub(/^nagios_/, '')
            unless @nagios_type = Nagios::Base.type(name.to_sym)
                raise Puppet::DevError, "Could not find nagios type '#{name}'"
            end

            # And add our 'ensure' settings, since they aren't a part of
            # Naginator by default
            @nagios_type.send(:attr_accessor, :ensure, :target, :on_disk)
        end
        @nagios_type
    end

    def self.parse(text)
        begin
            Nagios::Parser.new.parse(text.gsub(NAME_STRING, "_naginator_name"))
        rescue => detail
            raise Puppet::Error, "Could not parse configuration for #{resource_type.name}: #{detail}"
        end
    end

    def self.to_file(records)
        header + records.collect { |record| record.to_s }.join("\n").gsub("_naginator_name", NAME_STRING)
    end

    def self.skip_record?(record)
        false
    end

    def self.valid_attr?(klass, attr_name)
        nagios_type.parameters.include?(attr_name)
    end

    def initialize(resource = nil)
        if resource.is_a?(Nagios::Base)
            # We don't use a duplicate here, because some providers (ParsedFile, at least)
            # use the hash here for later events.
            @property_hash = resource
        elsif resource
            @resource = resource if resource
            # LAK 2007-05-09: Keep the model stuff around for backward compatibility
            @model = resource
            @property_hash = self.class.nagios_type.new
        else
            @property_hash = self.class.nagios_type.new
        end
    end
end