#!/usr/bin/env ruby

require 'net/http'
require 'uri'
require 'rexml/document'

xml_response = Net::HTTP.get_response( URI.parse( ARGV[0] ) ).body
xml = REXML::Document.new( xml_response )

stocks = Array.new

# aggregate data
xml.elements.each( 'DBFIND/RESULT/DATA/ROW' ) do |row|
  stock = Array.new
  row.elements.each( 'COL' ) do |column|
    case column.attributes['NAME']
    when 'Symbol'
      stock[0] = column.text
    when 'Current_Price'
      stock[1] = column.text
    end
  end
  stocks << stock
end


# append data
ticker_log_exists = File.exists? ARGV[1]
ticker_log = File.open( ARGV[1], 'a' )
header = "   DATE  \t     TIME      \t"
row = ''
stocks.each do |stock|
  header << (stock[0].center(12))
if stock[0] == "NCC"
    header << "    TIME"
end
    header << "\t"
    row << ('%12.2f' % stock[1] )
    row << "\t"
if stock[0] == "NCC"
    row << ( current_time.strftime('%H:%M:%S') )
    row << "\t"
end
header << "\t  TIME"
ticker_log.puts header unless ticker_log_exists
current_time = Time.now
ticker_log.puts "#{ current_time.strftime( '%m/%d/%Y' ) }\t#{ current_time.strftime( '%H:%M:%S' ) }\t#{ row }\t#{ current_time.strftime( '%H:%M:%S' ) }"