module CMSScanner
  class Error < StandardError
  end

  # Target Down Error
  class TargetDownError < Error
    attr_reader :response

    def initialize(response)
      @response = response
    end

    def to_s
      "The url supplied '#{response.request.url}' seems to be down (#{response.return_message})"
    end
  end

  # HTTP Authentication Required Error
  class HTTPAuthRequiredError < Error
    # :nocov:
    def to_s
      'HTTP authentication required (or was invalid), please provide it with --http-auth'
    end
    # :nocov:
  end

  # Proxy Authentication Required Error
  class ProxyAuthRequiredError < Error
    # :nocov:
    def to_s
      'Proxy authentication required (or was invalid), please provide it with --proxy-auth'
    end
    # :nocov:
  end

  # Access Forbidden Error
  class AccessForbiddenError < Error
    attr_reader :random_user_agent_used

    # @param [ Boolean ] random_user_agent_used
    def initialize(random_user_agent_used)
      @random_user_agent_used = random_user_agent_used
    end

    def to_s
      msg = if random_user_agent_used
              'Well... --random-user-agent didn\'t work, you\'re on your own now!'
            else
              'Please re-try with --random-user-agent'
            end

      "The target is responding with a 403, this might be due to a WAF. #{msg}"
    end
  end

  # HTTP Redirect Error
  class HTTPRedirectError < Error
    attr_reader :redirect_uri

    # @param [ String ] url
    def initialize(url)
      @redirect_uri = Addressable::URI.parse(url).normalize
    end

    def to_s
      "The URL supplied redirects to #{redirect_uri}. Use the --ignore-main-redirect "\
      'option to ignore the redirection and scan the target.'
    end
  end
end