#!/usr/local/bin/ruby

require File.dirname(__FILE__) + '/../config/boot'
require File.dirname(__FILE__) + '/../config/environment'

#
# process an email, extract link data and create a Typo post with tags
#
# TODO: care about someone other than me using this 
#   (grep for /[Rr]ick/ below...)
class InboundMailer < ActionMailer::Base
  def initialize
    @tags = {}
  end

  def receive(mail)
    # extract the subject, split into tag words
    tags = mail.subject.split(/\s+/)

    # extract the relevant body fragment(s)
    body = mail.body.split("\n")

    buffer = [] 
    body.each do |line| 
        break if line =~ /^(?:\s*-+)|Rick/  # when is the mail finished?
        if line =~ /^\s*$/  # whitespace separates posts
          article = create_article(buffer)
          set_article_tags(article, tags)
          buffer = []
        else
          buffer << line
        end
    end
  end

  # given a set of lines comprising a post, turn this 
  # into an Article, returning the Article
  def create_article(lines)
    title = lines.shift
    Article.create :title => title, :body => lines.join("\n"), 
      :author => 'rick', :user_id => 1, :allow_comments => true, 
      :text_filter_id => 5
  end

  # associate an Article with a set of Tag instances
  def set_article_tags(article, tags) 
    tags.each do |t|
      unless @tags[t]
        begin Tag.create :name => t, :display_name => t rescue nil; end
        @tags[t] = true
      end
      my_tag = Tag.find(:first, :conditions => ['name = ?', t])
      article.tags << my_tag
    end
  end
end

# process the email
InboundMailer.receive(STDIN.readlines.join(''))