module Jekyll::Convertible

def [](property)
  if self.class::ATTRIBUTES_FOR_LIQUID.include?(property)
    send(property)
  else
    data[property]
  end
end

def asset_file?
  sass_file? || coffeescript_file?
end

def coffeescript_file?
  ext == ".coffee"
end

def converters
  renderer.converters
end

def defaults
  @defaults ||= site.frontmatter_defaults.all(relative_path, type)
end

def do_layout(payload, layouts)
  self.output = renderer.tap do |doc_renderer|
    doc_renderer.layouts = layouts
    doc_renderer.payload = payload
  end.run
  Jekyll.logger.debug "Post-Render Hooks:", relative_path
  Jekyll::Hooks.trigger hook_owner, :post_render, self
ensure
  @renderer = nil # this will allow the modifications above to disappear
end

def hook_owner
  :pages if is_a?(Page)
end

def invalid_layout?(layout)
  !data["layout"].nil? && layout.nil? && !(is_a? Jekyll::Excerpt)
end

def no_layout?
  data["layout"] == "none"
end

def output_ext
  renderer.output_ext
end

def place_in_layout?
  !(asset_file? || no_layout?)
end

def published?
  !(data.key?("published") && data["published"] == false)
end

def read_yaml(base, name, opts = {})
  filename = @path || site.in_source_dir(base, name)
  Jekyll.logger.debug "Reading:", relative_path
  begin
    self.content = File.read(filename, **Utils.merged_file_read_opts(site, opts))
    if content =~ Document::YAML_FRONT_MATTER_REGEXP
      self.content = Regexp.last_match.post_match
      self.data = SafeYAML.load(Regexp.last_match(1))
    end
  rescue Psych::SyntaxError => e
    Jekyll.logger.warn "YAML Exception reading #{filename}: #{e.message}"
    raise e if site.config["strict_front_matter"]
  rescue StandardError => e
    Jekyll.logger.warn "Error reading file #{filename}: #{e.message}"
    raise e if site.config["strict_front_matter"]
  end
  self.data ||= {}
  validate_data! filename
  validate_permalink! filename
  self.data
end

def render_all_layouts(layouts, payload, info)
  renderer.layouts = layouts
  self.output = renderer.place_in_layouts(output, payload, info)
ensure
  @renderer = nil # this will allow the modifications above to disappear
end

def render_liquid(content, payload, info, path)
  renderer.render_liquid(content, payload, info, path)
end

def render_with_liquid?
  return false if data["render_with_liquid"] == false
  Jekyll::Utils.has_liquid_construct?(content)
end

def renderer
  @renderer ||= Jekyll::Renderer.new(site, self)
end

def sass_file?
  Jekyll::Document::SASS_FILE_EXTS.include?(ext)
end

def to_liquid(attrs = nil)
  further_data = \
    (attrs || self.class::ATTRIBUTES_FOR_LIQUID).each_with_object({}) do |attribute, hsh|
      hsh[attribute] = send(attribute)
    end
  Utils.deep_merge_hashes defaults, Utils.deep_merge_hashes(data, further_data)
end

def to_s
  content || ""
end

def transform
  renderer.convert(content)
end

def type
  :pages if is_a?(Page)
end

def validate_data!(filename)
  unless self.data.is_a?(Hash)
    raise Errors::InvalidYAMLFrontMatterError,
          "Invalid YAML front matter in #{filename}"
  end
end

def validate_permalink!(filename)
  if self.data["permalink"] == ""
    raise Errors::InvalidPermalinkError, "Invalid permalink in #{filename}"
  end
end

def write(dest)
  path = destination(dest)
  FileUtils.mkdir_p(File.dirname(path))
  Jekyll.logger.debug "Writing:", path
  File.write(path, output, :mode => "wb")
  Jekyll::Hooks.trigger hook_owner, :post_write, self
end