class Metanorma::Generic::Configuration

def self.inherited(klass) # rubocop:disable Lint/MissingSuper
  klass._file = caller_locations(1..1).first.absolute_path
end

def absolute_path(value, root_path)
  case value
  when Hash then absolute_path1(value, root_path)
  when Array then absolute_path1_array(value, root_path)
  when String
    if !value.empty? && !Pathname.new(value).absolute?
      Pathname.new(File.join(root_path, value)).cleanpath.to_s
    else value
    end
  else value
  end
end

def absolute_path1(hash, pref)
  hash.reject { |_k, v| blank?(v) }.transform_values do |v|
    absolute_path(v, pref)
  end
end

def absolute_path1_array(value, pref)
  value.reject { |a| blank?(a) }.each_with_object([]) do |v1, g|
    g << absolute_path(v1, pref)
  end
end

def blank?(val)
  val.nil? || (val.respond_to?(:empty?) && val.empty?)
end

def default_formats
  formats.is_a?(Hash) and return
  self.formats ||= %w(html doc)
  self.formats = self.formats.each_with_object({}) do |k, m|
    m[k.to_sym] = k
  end
  self.formats.merge! DummyProcessor.new.output_formats
end

def default_org
  self.organization_name_short ||= ORGANIZATION_NAME_SHORT
  self.organization_name_long ||= ORGANIZATION_NAME_LONG
  self.document_namespace ||= DOCUMENT_NAMESPACE
end

def default_titles
  self.termsdefs_titles ||=
    ["Terms and definitions", "Terms, definitions, symbols and abbreviated terms",
     "Terms, definitions, symbols and abbreviations", "Terms, definitions and symbols",
     "Terms, definitions and abbreviations", "Terms, definitions and abbreviated terms"]
  self.symbols_titles ||=
    ["Symbols and abbreviated terms", "Symbols", "Abbreviated terms",
     "Abbreviations"]
  self.normref_titles ||=
    ["Normative references"]
  self.bibliography_titles ||= ["Bibliography"]
end

def filepath_attrs
  %i[i18nyaml boilerplate logo_path logo_paths header boilerplate
     htmlcoverpage htmlintropage htmlstylesheet scripts scripts_pdf
     standardstylesheet validate_rng_file wordcoverpage wordintropage
     wordstylesheet pdf_stylesheet]
end

def initialize(*args)
  super
  # Try to set config values from yaml file in current directory
  @yaml = File.join(File.dirname(self.class::_file || __FILE__), "..",
                    "..", YAML_CONFIG_FILE)
  set_default_values_from_yaml_file(@yaml)
end

def postprocess_defaults
  default_org
  default_formats
  default_titles
end

def set_default_value_from_yaml_file(attr, root_path, default_options)
  value = default_options[attr.to_s]
  value && filepath_attrs.include?(attr) and
    value = absolute_path(value, root_path)
  instance_variable_set("@#{attr}", value)
end

def set_default_values_from_yaml_file(config_file)
  if File.file?(config_file)
    root_path, default_config_options =
      set_default_values_from_yaml_file_prep(config_file)
    CONFIG_ATTRS.each do |attr|
      set_default_value_from_yaml_file(attr, root_path,
                                       default_config_options)
    end
  end
  postprocess_defaults
end

def set_default_values_from_yaml_file_prep(config_file)
  root_path = File.dirname(config_file)
  default_config_options =
    YAML.safe_load(File.read(config_file, encoding: "UTF-8"))
  default_config_options["doctypes"].is_a? Array and
    default_config_options["doctypes"] =
      default_config_options["doctypes"].each_with_object({}) do |k, m|
        m[k] = nil
      end
  [root_path, default_config_options]
end