#!/usr/bin/env ruby

ENV["RAILS_ENV"] ||= "production"

APP_PATH = File.expand_path('../../config/application',  __FILE__)
require File.expand_path('../../config/boot',  __FILE__)
require APP_PATH
Rails.application.require_environment!

LAST_STORY_KEY = "twitter:last_story_id"

last_story_id = (Keystore.value_for(LAST_STORY_KEY) || Story.last.id).to_i

Story.where("id > ? AND is_expired = ?", last_story_id, false).
order(:id).each do |s|
  if !s.tags.map(&:tag).include?("meta")
    status = "\n" + (s.url.present?? s.url + "\n" : "") + s.short_id_url

    tco_status = "\n" + (s.url.present?? ("X" * Twitter::TCO_LEN) + "\n" :
      "") + ("X" * Twitter::TCO_LEN)

    left_len = Twitter::MAX_TWEET_LEN - tco_status.length

    title = s.title

    if title.match(/^([dm] |@)/i)
      # prevent these tweets from activating twitter shortcuts
      # https://dev.twitter.com/docs/faq#tweeting
      title = "- #{title}"
    end

    if title.bytesize > left_len
      status = title[0, left_len - 3] + "..." + status
    else
      status = title + status
    end

    res = Twitter.oauth_request("/1.1/statuses/update.json", :post,
      { "status" => status })

    begin
      if !res["id_str"].match(/\d+/)
        raise
      end
    rescue => e
      puts "failed posting story #{s.id} (#{status.inspect}): #{e.inspect}\n" +
        "#{res.inspect}"
      exit
    end
  end

  Keystore.put(LAST_STORY_KEY, s.id)
  sleep 2
end