content: /*
   * This file is a part of BSL Language Server.
   *
   * Copyright (c) 2018-2025
   * Alexey Sosnoviy <labotamy@gmail.com>, Nikita Fedkin <nixel2007@gmail.com> 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.providers;
  
  import com.github._1c_syntax.bsl.languageserver.context.DocumentContext;
  import com.github._1c_syntax.bsl.languageserver.context.symbol.SourceDefinedSymbol;
  import com.github._1c_syntax.bsl.languageserver.context.symbol.Symbol;
  import com.github._1c_syntax.bsl.languageserver.context.symbol.VariableSymbol;
  import com.github._1c_syntax.bsl.languageserver.context.symbol.variable.VariableKind;
  import org.eclipse.lsp4j.DocumentSymbol;
  import org.eclipse.lsp4j.SymbolKind;
  import org.springframework.stereotype.Component;
  
  import java.util.EnumSet;
  import java.util.List;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  @Component
  public final class DocumentSymbolProvider {
  
    /**
     * Идентификатор источника символов документа.
     */
    public static final String LABEL = "BSL Language Server";
  
    private static final Set<VariableKind> supportedVariableKinds = EnumSet.of(
      VariableKind.MODULE,
      VariableKind.LOCAL,
      VariableKind.GLOBAL
    );
  
    public List<DocumentSymbol> getDocumentSymbols(DocumentContext documentContext) {
      return documentContext.getSymbolTree().getChildren().stream()
        .filter(DocumentSymbolProvider::isSupported)
        .map(DocumentSymbolProvider::toDocumentSymbol)
        .collect(Collectors.toList());
    }
  
    private static DocumentSymbol toDocumentSymbol(SourceDefinedSymbol symbol) {
      var documentSymbol = new DocumentSymbol(
        symbol.getName(),
        symbol.getSymbolKind(),
        symbol.getRange(),
        symbol.getSelectionRange()
      );
  
      List<DocumentSymbol> children = symbol.getChildren().stream()
        .filter(DocumentSymbolProvider::isSupported)
        .map(DocumentSymbolProvider::toDocumentSymbol)
        .collect(Collectors.toList());
  
      documentSymbol.setTags(symbol.getTags());
      documentSymbol.setChildren(children);
  
      return documentSymbol;
    }
  
    public static boolean isSupported(Symbol symbol) {
      var symbolKind = symbol.getSymbolKind();
      if (symbolKind == SymbolKind.Variable) {
        return supportedVariableKinds.contains(((VariableSymbol) symbol).getKind());
      }
      return true;
    }
  }
  