require "active_support/ordered_options"
require "rails_erd/railtie" if defined? Rails
require "rails_erd/engine" if defined? Rails
require "rails_erd/config"

# Welcome to the API documentation of Rails ERD. If you wish to extend or
# customise the output that is generated by Rails ERD, you have come to the
# right place.
#
# == Creating custom output
#
# If you want to create your own kind of diagrams, or some other output, a
# good starting point is the RailsERD::Diagram class. It can serve as the base
# of your output generation code.
#
# == Options
#
# Rails ERD provides several options that allow you to customise the
# generation of the diagram and the domain model itself. For an overview of
# all options available in Rails ERD, see README.rdoc.
#
# You can specify the option on the command line if you use Rails ERD with
# Rake:
#
#   % rake erd orientation=vertical title='My model diagram'
#
# When using Rails ERD from within Ruby, you can set the options on the
# RailsERD namespace module:
#
#   RailsERD.options.orientation = :vertical
#   RailsERD.options.title = "My model diagram"
module RailsERD
  class << self
    # Access to default options. Any instance of RailsERD::Domain and
    # RailsERD::Diagram will use these options unless overridden.
    attr_accessor :options

    def default_options
      ActiveSupport::OrderedOptions[
        :attributes, :content,
        :disconnected, true,
        :filename, "erd",
        :filetype, :pdf,
        :indirect, true,
        :inheritance, false,
        :markup, true,
        :notation, :simple,
        :orientation, :horizontal,
        :polymorphism, false,
        :sort, true,
        :warn, true,
        :title, true,
        :exclude, nil,
        :only, nil,
        :prepend_primary, false
      ]
    end
  end

  module Inspectable # @private :nodoc:
    def inspection_attributes(*attributes)
      attribute_inspection = attributes.collect { |attribute|
        " @#{attribute}=\#{[Symbol, String].include?(#{attribute}.class) ? #{attribute}.inspect : #{attribute}}"
      }.join
      class_eval <<-RUBY
        def inspect
          "#<\#{self.class}:0x%.14x#{attribute_inspection}>" % (object_id << 1)
        end
      RUBY
    end
  end

  self.options = default_options.merge(Config.load)
end