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Language Server Protocol implementation for 1C (BSL) - 1C:Enterprise 8 and OneScript languages.
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/*
 * This file is a part of BSL Language Server.
 *
 * Copyright (c) 2018-2024
 * Alexey Sosnoviy , Nikita Fedkin  and contributors
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 *
 * BSL Language Server is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 *
 * BSL Language Server is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with BSL Language Server.
 */
package com.github._1c_syntax.bsl.languageserver.cli;

import com.github._1c_syntax.bsl.languageserver.configuration.LanguageServerConfiguration;
import lombok.RequiredArgsConstructor;
import org.eclipse.lsp4j.jsonrpc.Launcher;
import org.eclipse.lsp4j.services.LanguageClient;
import org.eclipse.lsp4j.services.LanguageClientAware;
import org.springframework.stereotype.Component;

import java.io.File;
import java.util.List;
import java.util.concurrent.Callable;

import static picocli.CommandLine.Command;
import static picocli.CommandLine.Option;

/**
 * Запускает приложение в режиме Language Server
 * Ключ команды:
 *  без ключа
 * Параметры:
 * -c, (--configuration) <arg> - Путь к конфигурационному файлу BSL Language Server (.bsl-language-server.json).
 *                                     Возможно указывать как в абсолютном, так и относительном виде.
 *                                     Если параметр опущен, то будут использованы настройки по умолчанию.
 * Выводимая информация:
 *  Данный режим используется для взаимодействия с клиентом по протоколу LSP.
 */
@Command(
  name = "lsp",
  aliases = {"--lsp"},
  description = "LSP server mode (default)",
  usageHelpAutoWidth = true,
  footer = "@|green Copyright(c) 2018-2022|@")
@Component
@RequiredArgsConstructor
public class LanguageServerStartCommand implements Callable {
  @Option(
    names = {"-h", "--help"},
    usageHelp = true,
    description = "Show this help message and exit")
  private boolean usageHelpRequested;

  @Option(
    names = {"-c", "--configuration"},
    description = "Path to language server configuration file",
    paramLabel = "",
    defaultValue = "")
  private String configurationOption;

  private final LanguageServerConfiguration configuration;
  private final Launcher launcher;
  private final List languageClientAwares;

  public Integer call() {

    var configurationFile = new File(configurationOption);
    if (configurationFile.exists()) {
      configuration.update(configurationFile);
    }

    var languageClient = launcher.getRemoteProxy();

    languageClientAwares.forEach(languageClientAware -> languageClientAware.connect(languageClient));

    launcher.startListening();
    return -1;
  }

}