# This is the rendering context object you have access to in text processing...
class Comatose::ProcessingContext
  @@supported_methods = %w(page include)

  def initialize( page, locals={} )
    @locals = locals.stringify_keys if locals.respond_to? :stringify_keys
    @page = Comatose::PageWrapper.new(page, @locals)
  end

  def page
    @page
  end

  def include(path, locals={})
    begin
      page = ComatosePage.find_by_path(path)
      page.to_html( @locals.merge(locals) )
    rescue
      "<p>Page at <tt>#{path}</tt> could not be found.</p>"
    end
  end

  def find_by_path(path)
    begin
      page = ComatosePage.find_by_path(path)
      Comatose::PageWrapper.new(page, @locals)
    rescue
      "<p>Page at <tt>#{path}</tt> could not be found.</p>"
    end
  end

  def [](key)
    if key.to_s.downcase == 'page'
      @page
    elsif @locals.has_key? key
      @locals[key]
    elsif Comatose.registered_drops.has_key? key
      Comatose.registered_drops[key]
    end
  end

  def has_key?(key)
    @@supported_methods.include?(key) or @locals.has_key?(key) or Comatose.registered_drops.has_key?(key)
  end

  def to_liquid
    self
  end

  def get_binding
    binding
  end

  def method_missing(method_id, *args)
    method_name = method_id.to_s
    if @locals.has_key? method_name
      @locals[method_name]
    elsif Comatose.registered_drops.has_key? method_name
      Comatose.registered_drops[method_name].context = self
      Comatose.registered_drops[method_name]
    else
      "<!-- ProcessingContext: Couldn't find #{method_id} -->"
    end
  end

end