module LocalPac
  module App
    class LookupController < ApplicationController

      helpers Sinatra::Param

      get '/' do
        redirect to('/proxy.pac')
      end

      get '/:name' do
        file = local_storage.find(params[:name].to_s)
        fail Sinatra::NotFound, name: params[:name].to_s if file.nil?

        @client_ip = IPAddr.new(remote_addr).to_s
        @time      = Time.now.strftime "%Y-%m-%d %H:%M:%S"

        haml :lookup, layout: :application
      end

      post '/:name' do
        param :name, String, required: true
        param :url, String, required: true
        param :client_ip, String
        param :time, String

        parse_env = {}

        @file = local_storage.find(params[:name])
        @uri = Addressable::URI.heuristic_parse(params[:url])

        fail Sinatra::NotFound, name: params[:name].to_s if @file.nil?
        fail Exceptions::GivenUrlInvalid, JSON.dump(url: params[:url]) if @uri.host.blank?

        begin
          parse_env[:time] = @time = Time.parse(params[:time]).to_s unless params[:time].blank?
        rescue ArgumentError
          raise Exceptions::GivenTimeInvalid, JSON.dump(time: params[:time])
        end

        begin
          parse_env[:client_ip] = @client_ip = IPAddr.new(params[:client_ip]).to_s unless params[:client_ip].blank?
        rescue ArgumentError
          raise Exceptions::GivenClientIpInvalid, JSON.dump(client_ip: params[:client_ip])
        end


        parser = LocalPac::ProxyPac::PacParser.new(file: @file, environment: parse_env)

        begin
          @result = parser.find(@uri)
        rescue Exceptions::PacFileInvalid
          raise Exceptions::PacFileInvalid, name: params[:name]
        end

        haml :lookup_result, layout: :application
      end

      helpers do
        def remote_addr
          return '127.0.0.1'        if env['REMOTE_ADDR'] == ''
          return env['REMOTE_ADDR'] if env['REMOTE_ADDR'] 

          '127.0.0.1'
        end
      end

    end
  end
end