amahi/platform

#####################################################################
#
#  Copyright 2008-2009 Amahi Inc. - All Rights Reserved
#
#  This source module contains confidential and proprietary
#  information of Amahi Inc. It is not to be disclosed or used
#  except in accordance with applicable agreements. This
#  copyright notice does not evidence any actual or intended
#  publication of such source code.
#
#####################################################################

require 'open-uri'
require 'ping'
require 'rubygems'
require 'active_support/core_ext/numeric/time'
require 'action_view'
require 'action_view/helpers'
include ActionView::Helpers::DateHelper

class AmahiNews

    def self.top(nitems = 5)
        ret = nil
        begin
            # double protection
            site = 'blog.amahi.org'
            if Ping.pingecho(site, 2, 'http')
                ret = parse_feed("https://#{site}/news/2/", nitems) rescue nil
            end
        rescue
            ret = nil
        end
        ret
    end

    private

    def self.parse_feed (url, length = 5)
        output = [];
        open(url) do |http|
            result = ActiveSupport::JSON.decode(http.read)
            result['news'].each_with_index do |item, i|
                return output if ++i == length
                output << { :title => item[1], :link => item[0],
                    :date => convert_time_to_words(item[2]),
                :comments => item[3] }
            end
        end
        output
    end    

    def self.convert_time_to_words(weeks)
        weeks_count = weeks.gsub("weeks ago","").to_i 
        time_ago_in_words(Time.now - weeks_count.week) + ' ago'
    end

end