module Jekyll
  class Scholar
    @defaults = {
      # Style used for citations and bibliographies
      'style'                  => 'apa',
      # Sets languages used in bibliography
      'locale'                 => 'en',

      # Keys used to sort bibliography
      'sort_by'                => 'none',
      # Order used to sort biobliography
      'order'                  => 'ascending',
      'group_by'               => 'none',
      'group_order'            => 'ascending',
      # HTML tags used for bibliography group names
      'bibliography_group_tag' => 'h2,h3,h4,h5',
      # HTML tag used for list of bibliography entries
      'bibliography_list_tag'  => 'ol',
      # HTML tag used for individual bibliography entries
      'bibliography_item_tag'  => 'li',
      # Attributes applied to HTML tag for list of bibliography entries
      'bibliography_list_attributes' => {},
      # Attributes applied to HTML tag for bibliography entries
      'bibliography_item_attributes' => {},

      # Name of folder references files are stored in
      'source'                 => './_bibliography',
      # Name of default references file
      'bibliography'           => 'references.bib',

      # The repository folder with your entries' attachemnts, slides, etc.
      'repository'             => nil,

      # Delimiter for files in repositories;
      # this character may not be part of your entry keys!
      'repository_file_delimiter' => '.',

      'bibtex_options'         => { :strip => false, :parse_months => true },
      'bibtex_filters'         => [ :smallcaps, :superscript, :italics, :textit, :lowercase, :textregistered, :tiny, :latex ],
      'raw_bibtex_filters'     => [ ],
      'bibtex_skip_fields'     => [ :abstract, :month_numeric ],
      'bibtex_quotes'          => ['{', '}'],

      'replace_strings'        => true,
      'join_strings'           => true,
      # Remove duplicate entries from bibliography
      'remove_duplicates'      => false,

      'details_dir'            => 'bibliography',
      'details_layout'         => 'bibtex.html',
      'details_link'           => 'Details',

      # 'details_permalink': URL template for generating the filenames of the details pages.
      #
      # Example: if we had a citation key 'ruby':
      #   '/:details_dir/:year/:key:extension' would produce:
      #     '/bibliography/2008/ruby.html'        if global permalinks end in .html
      #     '/bibliography/2008/ruby/index.html'  if global permalinks end in "/" or are set to "pretty"
      #
      # Valid template parameters:
      #    ":details_dir"   The value of the details_dir field in the scholar config
      #    ":key"           The bibtex citation key.
      #    ":doi"           The DOI. If the DOI is missing or blank, this returns the citation key.
      #    ":extension"     Either of ".html" or "/index.html" depending upon the global permalink setting.
      # Template parameters can also include any key defined in the bibtex file, e.g. ":year", ":title", etc.
      # Bibtex keys such as 'title' are slugified in the same way as Jekyll treats blog post titles.
      'details_permalink'       => '/:details_dir/:key:extension',

      'bibliography_class'     => 'bibliography',
      'bibliography_template'  => '{{reference}}',

      'reference_tagname'      => 'span',
      'missing_reference'      => '(missing reference)',

      'details_link_class'     => 'details',

      'query'                  => '@*',

      'cite_class'             => 'citation',

      # If true, render in-page links from in-text citations to references as separate links (one link per citation).
      # If false, render as only one link to the first citation.
      # Note: This feature may not work with citation styles that group in-text citations
      # like `[1-3]` rather than `[1, 2, 3]`
      'separate_links'         => false,

      'type_names' => {
        'article' => 'Journal Articles',
        'book' => 'Books',
        'incollection' => 'Book Chapters',
        'inproceedings' => 'Conference Articles',
        'thesis' => 'Theses',
        'mastersthesis' => 'Master\'s Theses',
        'phdthesis' => 'PhD Theses',
        'manual' => 'Manuals',
        'techreport' => 'Technical Reports',
        'misc' => 'Miscellaneous',
        'unpublished' => 'Unpublished',
      },
      'type_aliases' => {
        'phdthesis' => 'thesis',
        'mastersthesis' => 'thesis',
      },
      'type_order' => [],

      'month_names' => nil

    }.freeze

    class << self
      attr_reader :defaults
    end
  end
end