comments.rb

require 'mail'

class Jekyll::Post

  alias :to_liquid_without_comments :to_liquid

  def to_liquid
    data = to_liquid_without_comments

    data['comments'] = Comments::load(self)
    data['comments_length'] = data['comments'].length

    data['comment_email_address'] = comment_email_address

    data
  end

  def comment_email_address
    "comment%2B#{id[1..-1].gsub('/', '-')}@blog.caurea.org"
  end

end

module Comments

  def self.load(post)
    @comments ||= read_comments(post.site)
    @comments[post.id]
  end

  def self.read_comments(site)
    comments = Hash.new { |h, k| h[k] = Array.new }

    Dir["#{site.source}/**/_comments/**/*"].sort.each do |comment|
      next unless File.file?(comment) and File.readable?(comment)

      mail = Mail.read(comment)
      mail.to.join('|') =~ /^comment\+(.+)@blog.caurea.org$/
      next unless $1

      postid = $1.gsub(/^(....)-(..)-(..)-(.*)$/, '/\1/\2/\3/\4')
      comments[postid] << Comment.new(site, mail)
    end

    comments
  end

end

class Comment
    attr_reader :site, :mail

    def initialize(site, mail)
        @site, @mail = site, mail
    end

    def to_liquid
        data = {}

        data['date']   = mail.date
        data['sender'] = mail.header[:from].display_names.first
        data['body']   = converter.convert(mail.body.to_s)

        data
    end


    def converter
        site.converters.find { |c| c.matches('md') }
    end

end