# encoding: utf-8
module LocalPac
  class PacFileValidator
    private

    attr_reader :pac_engine

    public

    def initialize(pac_engine = ProxyPacRb::Parser)
      @pac_engine = pac_engine
    end

    def valid?(file)
      validate(file)

      true
    rescue StandardError
      false
    end

    def errors(file)
      validate(file)

      ''
    rescue StandardError => e
      e.message
    end

    private

    def validate(file)
      pac = pac_engine.new.source(file.content) 
      pac.find('http://www.example.com')
    end
  end
end