config.ru

# -*- coding: UTF-8 -*-
require 'rubygems'
require 'bundler'
require 'pathname'
require 'json'
require "sinatra"

Bundler.require

Sinatra::Base.set(:run, false)
Sinatra::Base.set(:env, :production)

class Impact < Sinatra::Base
  set :public_dir, 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' do
    @files = params[:glob].inject([]) do |memo, glob|
      Pathname.glob(glob).each { |d| memo << d.cleanpath.to_s }
      memo
    end

    content_type :json
    @files.to_json
  end

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

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

  post '/lib/weltmeister/api/save' 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{\.\./?},"")
      @folder.empty? ? "." : @folder
    end
  end
end

run Impact