module ActiveMocker

  class ModelReader

    attr_reader :model_name, :relative_path, :file_reader

    def initialize(options={})
      @file_reader = options[:file_reader] ||= FileReader
      @relative_path = options[:path]
    end

    def parse(model_name)
      @model_name = model_name
      klass
      self
    end

    def klass
      @klass ||= eval_file
    end

    def eval_file
      m = Module.new
      m.module_eval(read_file)
      m.const_get m.constants.first
    end

    def read_file
      file_reader.read("#{relative_path}/#{model_name}.rb")
    end

    def class_methods
      (klass.methods - Object.methods - instance_methods - ActiveRecord::Base.methods)
    end

    def class_methods_with_arguments
      class_methods.map do |m|
        {m => klass.method(m).parameters }
      end
    end

    def instance_methods_with_arguments
      instance_methods.map do |m|
        {m => klass.new.method(m).parameters }
      end
    end

    def instance_methods
      klass.public_instance_methods(false)
    end

    def relationships_types
      klass.relationships
    end

    def relationships
      relationships_types.to_h.values.flatten
    end

  end

end