// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
//     Unless required by applicable law or agreed to in writing, software
//     distributed under the License is distributed on an "AS IS" BASIS,
//     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//     See the License for the specific language governing permissions and
//     limitations under the License.
package com.example.compute.signedmetadata.token;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.StandardCharsets;

class Downloader {

  String download(String urlString) throws IOException {
    URL url = new URL(urlString);
    return download(url.openConnection());
  }

  String download(URLConnection connection) throws IOException {
    try(BufferedReader in = new BufferedReader(
        new InputStreamReader(connection.getInputStream(), StandardCharsets.UTF_8))) {
      StringBuilder sb = new StringBuilder();
      in.lines().forEachOrdered(sb::append);
      return sb.toString();
    }
  }
}
