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/*
 * Copyright (c) 2015 Spotify AB.
 *
 * 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
 *
 *   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 com.spotify.helios.client;

import static java.nio.charset.StandardCharsets.UTF_8;

import java.net.URI;
import java.util.List;
import java.util.Map;

class Response {

  private final String method;
  private final URI uri;
  private final int status;
  private final byte[] payload;
  private final Map> headers;

  public Response(final String method, final URI uri, final int status, final byte[] payload,
                  final Map> headers) {
    this.method = method;
    this.uri = uri;
    this.status = status;
    this.payload = payload;
    this.headers = headers;
  }

  @Override
  public String toString() {
    return "Response{" +
           "method='" + method + '\'' +
           ", uri=" + uri +
           ", status=" + status +
           ", payload='" + decode(payload) + '\'' +
           ", headers=" + headers +
           '}';
  }

  private static String decode(final byte[] payload) {
    if (payload == null) {
      return "";
    }
    final int length = Math.min(payload.length, 1024);
    return new String(payload, 0, length, UTF_8);
  }

  public String method() {
    return method;
  }

  public URI uri() {
    return uri;
  }

  public int status() {
    return status;
  }

  public byte[] payload() {
    return payload;
  }

  public Map> headers() {
    return headers;
  }

  public String header(final String name) {
    final List headerValues = headers.get(name);
    return headerValues == null || headerValues.isEmpty() ? null : headerValues.get(0);
  }
}