module Picasa
  require 'net/http'
  require "xmlsimple"

  def albums(google_user)
    #returns [ {:id => "id", :title => "title"}, {another one} ]
    http=Net::HTTP.new('picasaweb.google.com')
    resp, data = http.get("/data/feed/api/user/#{google_user}")
    xml=XmlSimple.xml_in(data, 'KeyAttr' => 'name')
    albums = []
    xml['entry'].each do |album|
   	  attribute = {}
      attribute[:id] = album['id'][1]
      attribute[:title] = album['title'][0]['content']
      attribute[:photos_count] = album['numphotos'][0]
   	  albums << attribute
	  end
    albums
  end

  def photos(google_user, album_id)
    #returns {:photos => [:title, :thumbnail, :photo], :slideshow => "link to picasa slideshow"}
    http=Net::HTTP.new('picasaweb.google.com')
    resp, data = http.get("/data/feed/api/user/#{google_user}/albumid/#{album_id}")
    xml=XmlSimple.xml_in(data, 'KeyAttr' => 'name')
    photos = []
    xml['entry'].each do |photo|
   	  attribute = {}
      attribute[:title] = photo['group'][0]['description'][0]['content'] #returns nil if empty
      attribute[:thumbnail_1] = photo['group'][0]['thumbnail'][0]['url']
      attribute[:thumbnail_2] = photo['group'][0]['thumbnail'][1]['url']
      attribute[:thumbnail_3] = photo['group'][0]['thumbnail'][2]['url']
      #attributes[:photo] << photo['group'][0]['content']['url']
      attribute[:photo] = photo['content']['src']
      photos << attribute
    end
    { :photos => photos, :slideshow => xml['link'][2]['href'] }
	end
	  
  module_function :albums, :photos
end