class Admin::PurchasesController < ApplicationController
  require "net/http"
  require "uri"
  require 'zip/zip'
  
  layout "admin"
  
  def index
    @purchases = Purchase.all.entries
  end

  def download
    @purchase = Purchase.first(:conditions => {:id => params[:id]})
    download_purchase(@purchase, request.env['REQUEST_URI'].split('admin')[0].chop)
    @purchase.downloaded = true
    @purchase.save
    redirect_to admin_purchases_url
  end

  protected
  
  def download_purchase(purchase, url)
    uri = URI.parse("http://localhost:3001/download/design")
    http = Net::HTTP.new(uri.host, uri.port)
    request = Net::HTTP::Post.new(uri.request_uri)
    
    public_key = OpenSSL::PKey::RSA.new(File.read(APP_CONFIG['main_public_key']))
    encrypted_data = public_key.public_encrypt({:purchase_id => purchase.purchase_id,
                                                :roaming_id => Site.find(session[:site]).roaming_id,
                                                :url => url}.to_json)
    
    request.set_form_data({ :purchase => encrypted_data})
    response = http.request(request)
    temp_file = Tempfile.new("temp_file")
    temp_file.binmode
    temp_file.write response.body
    temp_file.rewind
    zip_name = response['content-disposition'].split('filename=')[1].gsub(/[\\\"]|.zip/, '') rescue ''
    unzip_design(temp_file, zip_name)
    temp_file.close
    temp_file.unlink
  end
  
  def unzip_design(file, zip_name)
    Zip::ZipFile.open(file) do |zip_file|
      encrypted = {}
      ['encrypted_data', 'encrypted_key', 'encrypted_iv'].each do |e|
        encrypted.merge!(e => zip_file.read(e))
      end
      orig_file = decrypt_data(encrypted['encrypted_data'], encrypted['encrypted_key'], encrypted['encrypted_iv'])
      
      temp_file = Tempfile.new("temp_file_zip")
      temp_file.binmode
      temp_file.write orig_file
      temp_file.rewind
      
      Zip::ZipFile.open(temp_file) { |orig_zip|
        design = Design.new.from_json(orig_zip.read("#{zip_name}/#{zip_name}.json"))
        Dir.mktmpdir('f_path') { |dir|
          
          title = design.layout.file_filename
          temp = File.new(dir + '/' + title, 'w+')
          temp.write orig_zip.read(zip_name + '/' + title)
          design.layout.file = temp
          design.layout.to_save = true
          
          title = design.structure_css_filename
          temp = File.new(dir + '/' + title, 'w+')
          temp.write orig_zip.read(zip_name + '/' + title)
          design.structure_css = temp
          
          ['themes', 'javascripts', 'images'].each do |type|
            design.send(type).each do |object|
              title = object.file_filename
              temp = File.new(dir + '/' + title, 'w+')
              temp.write orig_zip.read(zip_name + '/' + type + '/' + title)
              object.file = temp
              object.to_save = true
            end
          end
        }
        temp_file.close
        temp_file.unlink
        design.save
      }
      
    end
  end

end