require 'action_view'
require 'yaml'

module Fliqz # :nodoc:
  module UploaderHelper # :nodoc:
    class ConfigFileNotFoundError < StandardError; end
    class FliqzConfigInfoNotDefinedError < StandardError; end
    include ActionView::Helpers::TagHelper
    
    def self.included(base) #:nodoc:
    
      begin
        @@fliqz_config_path = RAILS_ROOT + '/config/fliqz_account.yml'
        @@fliqz_config = YAML.load_file(@@fliqz_config_path)[RAILS_ENV].symbolize_keys
      rescue
        raise ConfigFileNotFoundError.new('File %s not found' % @@fliqz_config_path)
      end
      
      begin
        @@fliqz_account_id = @@fliqz_config[:account_id]
        @@fliqz_account_id.empty?
      rescue
        raise FliqzConfigInfoNotDefinedError.new('Fliqz Account ID not defined')
      end
      
    end
    
    # Returns a embed tag that display a Fliqz Flash Uploader within an
    # HTML page.
    # 
    # Please make sure you already have the right account information
    # defined in fliqz_account.yml file.
    # 
    # ==== Flash Options
    # * <b>bgcolor</b>
    #   - the background color of the Flash player; default '#869ca7'
    # * <b>width</b>
    #   - the width of the Flash player; default '450'
    # * <b>height</b>
    #   - the height of the Flash player; default '345'
    # * <b>name</b>
    #   - the name of the Flash player; default 'baseuploader'
    # * <b>align</b>
    #   - the align of the Flash player; default 'middle'
    # * <b>play</b>
    #   - the play option of the Flash player; default 'true'
    # * <b>loop</b>
    #   - the loop option of the Flash player; default 'false'
    # * <b>quality</b>
    #   - the quality option of the Flash player; default 'high'
    # * <b>wmode</b>
    #   - the wmode option of the Flash player; default 'transparent'
    # * <b>allowscriptaccess</b>
    #   - the allowscriptaccess option of the Flash player; default 'always'
    # * <b>src</b>
    #   - the src option of the Flash player; 
    #     default 'http://upload.fliqz.com/base/swf/baseuploader.swf'
    #   
    # ==== Fliqz Options
    # Please reference page source of http://upload.fliqz.com/base/ 
    # for more detail on these options.
    # * <b>errorPage</b>
    #   - A URL responses to unsuccessful upload; default nil
    # * <b>successPage</b>
    #   - A URL responses to successful upload; default 'http://upload.fliqz.com/base/htm/SuccessPage.htm'
    # * <b>returnEmbedAndPerma</b>
    #   - A Boolean parameter which determines the content of screen 
    #     displayed by the uploader after a successful upload; default nil
    # * <b>hideControlButtons</b>
    #   - A Boolean parameter which engages a buttonless mode of operation.
    # * <b>illegalFileTypes</b>
    #   - This parameter restricts the list of file types uploadable by the 
    #     uploader; default nil
    # * <b>fontFamily</b>
    #   - This overides the name of the default font family used by the text
    #     elements; default nil
    # * <b>fontColor</b>
    #   - This overides the color of the font used by the text elements;
    #     default nil
    #   
    # ==== Examples
    # * <tt>fliqz_uploader_tag</tt>
    #   - Create an embedded Fliqz Flash Uploader with all the default 
    #     options
    # * <tt>fliqz_uploader_tag {:bgcolor => '#fff'}</tt>
    #   - Create an embedded Fliqz Flash Uploader with white background 
    #     color
    # * <tt>fliqz_uploader_tag {:bgcolor => '#fff'}, {:fontColor => '#000'}</tt>
    #   - Create an embedded Fliqz Flash Uploader with white background 
    #     color and black font color
    # 
    def fliqz_uploader_tag flash_options={}, fliqz_options = {}
      flash_config, fliqz_config = get_default_fliqz_uploader_config
      
      flash_options.symbolize_keys!
      flash_config.update(flash_options)

      fliqz_options.symbolize_keys!
      fliqz_config.update(fliqz_options)
      fliqz_config[:accountId] = @@fliqz_account_id
      
      flash_config[:flashVars] = fliqz_config.to_query

      return tag(:embed, flash_config, false, false)
    end
    
    def get_default_fliqz_uploader_config
      flash_config = {
        :bgcolor => '#869ca7',
        :width => '450',
        :height => '345',
        :name => 'baseuploader',
        :align => 'middle',
        :play => 'true',
        :loop => 'false',
        :quality => 'high',
        :wmode => 'transparent',
        :allowscriptaccess => 'always',
        :src => 'http://upload.fliqz.com/base/swf/baseuploader.swf',
        :type => 'application/x-shockwave-flash',
        :pluginspage => 'http://www.adobe.com/go/getflashplayer'
      }
      fliqz_config = {
        :errorPage => nil,
        :successPage => 'http://upload.fliqz.com/base/htm/SuccessPage.htm',
        :returnEmbedAndPerma => nil,
        :hideControlButtons => nil,
        :illegalFileTypes => nil,
        :fontFamily => nil,
        :fontColor => nil
      }
      return flash_config, fliqz_config
    end
    
  end
end