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.diagnostics;
  
  import com.github._1c_syntax.bsl.languageserver.context.symbol.RegionSymbol;
  import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticCompatibilityMode;
  import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticMetadata;
  import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticSeverity;
  import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticTag;
  import com.github._1c_syntax.bsl.languageserver.diagnostics.metadata.DiagnosticType;
  import com.github._1c_syntax.bsl.languageserver.utils.Keywords;
  import com.github._1c_syntax.bsl.languageserver.utils.RelatedInformation;
  import com.github._1c_syntax.bsl.parser.BSLParser;
  import org.antlr.v4.runtime.tree.ParseTree;
  import org.eclipse.lsp4j.DiagnosticRelatedInformation;
  import org.eclipse.lsp4j.Range;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.TreeMap;
  import java.util.stream.Collectors;
  
  @DiagnosticMetadata(
    type = DiagnosticType.CODE_SMELL,
    severity = DiagnosticSeverity.INFO,
    minutesToFix = 1,
    tags = {
      DiagnosticTag.STANDARD
    },
    compatibilityMode = DiagnosticCompatibilityMode.COMPATIBILITY_MODE_8_3_1
  )
  public class DuplicateRegionDiagnostic extends AbstractVisitorDiagnostic {
    private final Map<String, String> regionNames = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
  
    public DuplicateRegionDiagnostic() {
      regionNames.put(Keywords.PUBLIC_REGION.getRu(), Keywords.PUBLIC_REGION.getEn());
      regionNames.put(Keywords.PUBLIC_REGION.getEn(), Keywords.PUBLIC_REGION.getEn());
      regionNames.put(Keywords.INTERNAL_REGION.getRu(), Keywords.INTERNAL_REGION.getEn());
      regionNames.put(Keywords.INTERNAL_REGION.getEn(), Keywords.INTERNAL_REGION.getEn());
      regionNames.put(Keywords.PRIVATE_REGION.getRu(), Keywords.PRIVATE_REGION.getEn());
      regionNames.put(Keywords.PRIVATE_REGION.getEn(), Keywords.PRIVATE_REGION.getEn());
      regionNames.put(Keywords.EVENT_HANDLERS_REGION.getRu(), Keywords.EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.EVENT_HANDLERS_REGION.getEn(), Keywords.EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_EVENT_HANDLERS_REGION.getRu(), Keywords.FORM_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_EVENT_HANDLERS_REGION.getEn(), Keywords.FORM_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_HEADER_ITEMS_EVENT_HANDLERS_REGION.getRu(),
        Keywords.FORM_HEADER_ITEMS_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_HEADER_ITEMS_EVENT_HANDLERS_REGION.getEn(),
        Keywords.FORM_HEADER_ITEMS_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_COMMANDS_EVENT_HANDLERS_REGION.getRu(), Keywords.FORM_COMMANDS_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.FORM_COMMANDS_EVENT_HANDLERS_REGION.getEn(), Keywords.FORM_COMMANDS_EVENT_HANDLERS_REGION.getEn());
      regionNames.put(Keywords.VARIABLES_REGION.getRu(), Keywords.VARIABLES_REGION.getEn());
      regionNames.put(Keywords.VARIABLES_REGION.getEn(), Keywords.VARIABLES_REGION.getEn());
      regionNames.put(Keywords.INITIALIZE_REGION.getRu(), Keywords.INITIALIZE_REGION.getEn());
      regionNames.put(Keywords.INITIALIZE_REGION.getEn(), Keywords.INITIALIZE_REGION.getEn());
    }
  
    @Override
    public ParseTree visitFile(BSLParser.FileContext ctx) {
  
      List<RegionSymbol> regions = documentContext.getSymbolTree().getModuleLevelRegions();
  
      // анализировать модуль без областей не будем
      if (regions.isEmpty()) {
        return ctx;
      }
  
      // считаем дубли с учетом альтернативных имен для стандартных областей
      regions.stream()
        .collect(Collectors.groupingBy(regionSymbol ->
          regionNames.getOrDefault(regionSymbol.getName(), regionSymbol.getName())))
        .forEach((String name, List<RegionSymbol> regionsList) -> {
            if (regionsList.size() > 1) {
  
              List<DiagnosticRelatedInformation> relatedInformation = new ArrayList<>();
              RegionSymbol currentRegion = regionsList.get(0);
              Range currentRange = currentRegion.getStartRange();
  
              regionsList.stream()
                .map(region ->
                  RelatedInformation.create(
                    documentContext.getUri(),
                    region.getStartRange(),
                    "+1"
                  )
                )
                .collect(Collectors.toCollection(() -> relatedInformation));
  
              diagnosticStorage.addDiagnostic(
                currentRange,
                info.getMessage(currentRegion.getName()),
                relatedInformation);
            }
          }
        );
  
      return ctx;
    }
  }
  