# encoding: utf-8
module LocalPac
  module App
    class ApplicationController < Sinatra::Base

      @local_storage_mutex = Mutex.new

      class << self
        attr_reader :local_storage_mutex
      end

      set :root, ::File.expand_path('../../', __FILE__)
      set :haml, :format => :html5

      def local_storage
        return @local_storage if @local_storage

        ApplicationController.local_storage_mutex.synchronize do
          if settings.respond_to? :local_storage
            LocalPac.ui_logger.debug 'Using local storage in production mode: loaded once on startup'
            @local_storage = settings.local_storage
          else
            LocalPac.ui_logger.debug 'Using local storage in development mode: reloaded per request'
            @local_storage = LocalPac::LocalStorage.new
          end
        end
      end

      use Rack::Deflater
      use Rack::Locale
      use Rack::NestedParams
      use Rack::PostBodyContentTypeParser

      not_found do
        @error_summary = I18n.t('errors.unknown_proxy_pac.summary')
        @error_details = I18n.t('errors.unknown_proxy_pac.details', name: env['PATH_INFO'])

        halt 404, haml(:error, layout: :application)
      end
      
      error do
        @error_summary = I18n.t('errors.default.summary')
        @error_details = I18n.t('errors.default.details')

        halt 500, haml(:error, layout: :application)
      end

      error Exceptions::GivenUrlInvalid do
        @error_summary = I18n.t('errors.invalid_url.summary') 
        @error_details = I18n.t('errors.invalid_url.details', url: env['sinatra.error'].message)

        halt 401, haml(:error, layout: :application)
      end

      set :raise_sinatra_param_exceptions, true

      error Sinatra::Param::InvalidParameterError do
        @error_summary = I18n.t('errors.invalid_parameter.summary') 
        @error_details = I18n.t('errors.invalid_parameter.details', parameter: env['sinatra.error'].param)

        halt 401, haml(:error, layout: :application)
      end

      configure :profile do
        require 'ruby-prof'
        use Rack::RubyProf, files: '/tmp/profiles'

        use Rack::CommonLogger, LocalPac::AccessLogger.new(LocalPac.config.access_log)
        set :raise_errors, false
        set :local_storage, LocalPac::LocalStorage.new
      end

      configure :production do
        use Rack::CommonLogger, LocalPac::AccessLogger.new(LocalPac.config.access_log)
        set :raise_errors, false
        set :local_storage, LocalPac::LocalStorage.new
      end

      configure :development do
        set :raise_errors, true

        before do
          LocalPac.ui_logger.debug "Parameters: " + params.to_s
        end
      end

      configure :test do
        use Rack::CommonLogger, LocalPac::NullAccessLogger.new
        set :raise_errors, false
      end
      
      configure do
        mime_type :proxy_pac_file, 'application/x-ns-proxy-autoconfig'

        I18n::Backend::Simple.send(:include, I18n::Backend::Fallbacks)
        I18n.load_path = Dir[::File.join(settings.root, 'locales', '*.yml')]
        I18n.backend.load_translations

        I18n.enforce_available_locales = true
      end

      helpers do
        include Sprockets::Helpers

        def h(text)
          Rack::Utils.escape_html(text)
        end

        def t(*args)
          I18n.t(*args)
        end
      end
    end
  end
end