require 'logger'

module Voorhees
  module Config    
    class << self
      
      # the configuration hash itself
      def configuration
        @configuration ||= defaults
      end
      
      def defaults
        {
          :logger              => defined?(RAILS_DEFAULT_LOGGER) ? RAILS_DEFAULT_LOGGER : Logger.new(STDOUT),
          :timeout             => 10,
          :retries             => 0,
          :http_method         => Net::HTTP::Get
        }
      end
      
      def [](key)
        configuration[key]
      end
      
      def []=(key, val)
        configuration[key] = val
      end

      # remove an item from the configuration
      def delete(key)
        configuration.delete(key)
      end
      
      # Return the value of the key, or the default if doesn't exist
      # 
      # ==== Examples
      # 
      # Voorhees::Config.fetch(:monkey, false)
      # => false
      # 
      def fetch(key, default)
        configuration.fetch(key, default)
      end

      def to_hash
        configuration
      end      

      # Yields the configuration.
      # 
      # ==== Examples
      #   Voorhees::Config.use do |config|
      #     config[:debug]    = true
      #     config.something  = false
      #   end
      # 
      def setup
        yield self
        nil
      end      

      def clear
        @configuration = {}
      end
      
      def reset
        @configuration = defaults
      end
      
      # allow getting and setting properties via Voorhees::Config.xxx
      # 
      # ==== Examples
      # Voorhees::Config.debug
      # Voorhees::Config.debug = false
      # 
      def method_missing(method, *args)
        if method.to_s[-1,1] == '='
          configuration[method.to_s.tr('=','').to_sym] = *args
        else
          configuration[method]
        end
      end      
      
    end 
  end
end