impact.rb

require 'rubygems'
require 'pathname'
require 'json'
require 'sinatra'

set :public_folder, File.dirname(__FILE__) + '/'

# This is where you could serve different pages depending on the device accessing the page,
# such as for iPads and mobile devices.

# get '/', :agent => /iphone|android/i do
#   File.read('mobile.html')
# end

get '/' do
  File.read('index.html')
end

get '/weltmeister' do
  File.read('weltmeister.html')
end

get /\/lib\/weltmeister\/api\/glob(.php)?/ do
  @files = params[:glob].inject([]) do |memo, glob|
    dir = from_impact_basedir(glob)
    Pathname.glob(dir).each do |d|
      memo << relative_pathname(d)
    end
    memo
  end
  
  content_type :json
  @files.to_json
end

get /\/lib\/weltmeister\/api\/browse(.php)?/ do
  @dir = from_impact_basedir(params[:dir])
  @type = params[:type]
  
  extensions = []
  
  case @type
    when 'images' then extensions += %w{png gif jpg jpeg bmp}
    when 'scripts' then extensions += %w{js}
    else extensions += "*".to_a
  end

  parent = @dir ? relative_pathname(Pathname.new(@dir).parent) : false
  directories = Pathname.new(@dir).children.select { |c| c.directory? }.map { |d| relative_pathname d }
  files = Pathname.glob(File.join(@dir, "*.{#{extensions.join(',')}}")).map { |f| relative_pathname f }

  content_type :json
  {
    :parent => parent,
    :dirs => directories,
    :files => files
  }.to_json
end

post /\/lib\/weltmeister\/api\/save(.php)?/ do
  response = { :error => 0 }
  
  if params[:path] && params[:data]
    @dir = from_impact_basedir(params[:path])
    
    if File.extname(@dir) == ".js"
      begin
        File.open(@dir, 'w') { |f| f.write(params[:data]) }
      rescue => e
        response[:error] = 2
        response[:msg] = "Could not save the level file. " + e.message
      end
    else
      response[:error] = 3
      response[:msg] = "File must have a .js suffix"
    end
  else
    response[:error] = 1
    response[:msg] = "No Data or Path specified"
  end
  
  content_type :json
  response.to_json
end

helpers do
  def from_impact_basedir(dir)
    @folder = dir.to_s.sub(%r{\.\./?},"")
    File.join(File.dirname(__FILE__), @folder)
  end
  def relative_pathname(path)
    @asset_root ||= Pathname(File.dirname(__FILE__)).realpath
    path = Pathname(File.expand_path(path))
    path.relative_path_from(@asset_root).cleanpath.to_s
  end
end