/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   http://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 org.apache.maven.index;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

import org.apache.maven.index.updater.ResourceFetcher;

/**
 * {@link ResourceFetcher} backed by Java11 HttpClient to be used in tests.
 */
public class Java11HttpClient implements ResourceFetcher {
    private final HttpClient client =
            HttpClient.newBuilder().followRedirects(HttpClient.Redirect.NEVER).build();

    private URI uri;

    @Override
    public void connect(String id, String url) {
        this.uri = URI.create(url + "/");
    }

    @Override
    public void disconnect() {}

    @Override
    public InputStream retrieve(String name) throws IOException {
        HttpRequest request =
                HttpRequest.newBuilder().uri(uri.resolve(name)).GET().build();
        try {
            HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
            if (response.statusCode() == HttpURLConnection.HTTP_OK) {
                return response.body();
            } else {
                throw new IOException("Unexpected response: " + response);
            }
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new IOException(e);
        }
    }
}
