#!/usr/bin/env ruby
# Bot to populare links from a feed
# 
# Usage: bot.rb [OPTION] url
#
# -h, --help:
#    show help
# -d, --database:
#    database to use
# -t, --tags:
#    link tags
# -u, --user:
#    OpenID of the user creating the links
#
# url: The feed url
require 'rubygems'
require_gem 'feedtools'
require 'getoptlong'
require 'rdoc/usage'
require 'linkr'

include FeedTools
include Linkr::Models

opts = GetoptLong.new(
  [ '--help', '-h', GetoptLong::NO_ARGUMENT ],
  [ '--tags', '-t', GetoptLong::REQUIRED_ARGUMENT ],
  [ '--user', '-u', GetoptLong::REQUIRED_ARGUMENT ],
  [ '--database', '-d', GetoptLong::REQUIRED_ARGUMENT ]
)

url = $*[0]
db = nil
tags = ''
user_open_id = nil
opts.each do |opt, arg|
  case opt
    when '--help'
      RDoc::usage
    when '--database'
      db = arg
    when '--tags'
      tags = arg
    when '--user'
      user_open_id = arg
  end
end
if ARGV.length != 1
  puts "Missing url argument (try --help)"
  exit 0
end

# Connecting the database
Linkr::Models::Base.establish_connection :adapter => 'sqlite3', :database => db
Linkr.create if Linkr.respond_to? :create

# Finding of creating the user
user = User.find_by_open_id user_open_id
user = User.create :open_id => user_open_id if user.nil?

puts "Connecting to #{url}..."
feed = Feed.open(url)
puts " Getting feed from #{feed.title} ".center(80, '=')
feed.items.each do |item|
  if Link.find_by_url item.link
    puts " exists #{item.title}"
  else
    puts " adding #{item.title}"
    Link.create :title => item.title, :url => item.link,
                :tags => tags, :user => user
  end
end
puts '=' * 80