# frozen_string_literal: true

# Copyright (C) 2019-2023 Miquel Sabaté Solà <mikisabate@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

require 'time'
require_relative 'render_helper'
require_relative 'modified_time_helper'

module Jekyll
  # Render og:type related tags.
  class RenderTypeTags < Liquid::Tag
    include ::Jekyll::RenderHelper
    include ::Jekyll::ModifiedTimeHelper

    def render(context)
      if ['posts'].include?(context['page']['collection'])
        render_article_tags(context['page'])
      else
        '<meta property="og:type" content="website" />'
      end
    end

    protected

    # Render all the tags related to the article og:type.
    def render_article_tags(page)
      tags = page['tags'].inject('') { |acc, t| acc + render_meta('article:tag', t) }

      # rubocop:disable Style/StringConcatenation
      '<meta property="og:type" content="article" />' +
        render_meta('og:author', 'Miquel Sabaté Solà') +
        render_meta('profile:first_name', 'Miquel') +
        render_meta('profile:last_name', 'Sabaté Solà') +
        render_meta('profile:username', 'mssola') +
        render_meta('profile:gender', 'male') +
        render_meta('article:section', page['collection']) +
        render_meta('article:published_time', published_time(page)) +
        render_meta('article:modified_time', modified_time(page)) +
        tags
      # rubocop:enable Style/StringConcatenation
    end

    # Returns the published time of the given page.
    def published_time(page)
      # We could do fancy stuff like using DateTime.strptime and so on, but
      # Jekyll completely disregards the hour, minutes, etc., so why bother.
      page['date'].to_s.split.first
    end
  end
end

Liquid::Template.register_tag('render_type_tags', Jekyll::RenderTypeTags)