// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:async';
import 'dart:io';

import 'package:analysis_server/src/lsp/channel/lsp_byte_stream_channel.dart';
import 'package:analysis_server/src/lsp/lsp_socket_server.dart';

/**
 * Instances of the class [StdioServer] implement a simple server operating
 * over standard input and output. The primary responsibility of this server
 * is to split incoming messages on newlines and pass them along to the
 * analysis server.
 */
class LspStdioAnalysisServer {
  /**
   * An object that can handle either a WebSocket connection or a connection
   * to the client over stdio.
   */
  LspSocketServer socketServer;

  /**
   * Initialize a newly created stdio server.
   */
  LspStdioAnalysisServer(this.socketServer);

  /**
   * Begin serving requests over stdio.
   *
   * Return a future that will be completed when stdin closes.
   */
  Future serveStdio() {
    LspByteStreamServerChannel serverChannel = new LspByteStreamServerChannel(
        stdin, stdout.nonBlocking, socketServer.instrumentationService);
    socketServer.createAnalysisServer(serverChannel);
    return serverChannel.closed;
  }
}