#--
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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
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#++

module Qpid::Proton::Messenger

  # TrackerStatus contains symbols that represent the status value for a
  # Tracker.
  #
  class TrackerStatus

    def initialize value, name # :nodoc:
      @value = value
      @name = name
    end

    def value # :nodoc:
      @value
    end

    def to_s # :nodoc:
      @name.to_s
    end

    def self.by_name(name) # :nodoc:
      @by_name[name.to_sym] unless name.nil?
    end

    def self.by_value(value) # :nodoc:
      @by_value[value] unless value.nil?
    end

    private

    def self.add_item(key, value) # :nodoc:
      @by_name ||= {}
      @by_name[key] = TrackerStatus.new value, key
      @by_value ||= {}
      @by_value[value] = @by_name[key]
    end

    def self.const_missing(key) # :nodoc:
      @by_name[key]
    end

    self.add_item :UNKNOWN,  Cproton::PN_STATUS_UNKNOWN
    self.add_item :PENDING,  Cproton::PN_STATUS_PENDING
    self.add_item :ACCEPTED, Cproton::PN_STATUS_ACCEPTED
    self.add_item :REJECTED, Cproton::PN_STATUS_REJECTED
    self.add_item :SETTLED,  Cproton::PN_STATUS_SETTLED

  end

end
