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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.http;

import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * @author [email protected] (Marcio Endo)
 */
enum Protocol {

  HTTP_1_0("HTTP/1.0"),

  HTTP_1_1("HTTP/1.1"),

  HTTP_2("HTTP/2");

  private static final Map MAP = Stream.of(Protocol.values())
      .collect(Collectors.toMap(proto -> proto.value, Function.identity()));

  private final String value;

  private Protocol(String value) {
    this.value = value;
  }

  public static Protocol read(SocketReader reader) throws Code400BadRequestException {
    String name = reader.readString();

    if (!MAP.containsKey(name)) {
      throw Code400BadRequestException.invalidProtocol(name);
    }

    return MAP.get(name);
  }

}