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/*
 * SonarQube JavaScript Plugin
 * Copyright (C) 2011-2024 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program 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 of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.plugins.javascript.bridge;

import static java.util.Collections.emptyList;

import java.io.IOException;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.api.batch.fs.InputFile;

class TsConfigFile implements Predicate {

  private static final Logger LOG = LoggerFactory.getLogger(TsConfigFile.class);

  static final TsConfigFile UNMATCHED_CONFIG = new TsConfigFile(
    "NO_CONFIG",
    emptyList(),
    emptyList()
  );

  final String filename;
  final Set files;
  final List projectReferences;

  TsConfigFile(String filename, List files, List projectReferences) {
    this.filename = filename;
    this.files = files.stream().map(TsConfigFile::normalizePath).collect(Collectors.toSet());
    this.projectReferences = projectReferences;
  }

  static String normalizePath(String path) {
    try {
      return Path
        .of(path)
        .toRealPath(LinkOption.NOFOLLOW_LINKS)
        .toString()
        .replaceAll("[\\\\/]", "/");
    } catch (IOException e) {
      LOG.debug("Could not normalize {}", path);
      return path;
    }
  }

  @Override
  public boolean test(InputFile inputFile) {
    var path = normalizePath(inputFile.absolutePath());
    return files.contains(path);
  }

  static Map> inputFilesByTsConfig(
    List tsConfigFiles,
    List inputFiles
  ) {
    Map> result = new LinkedHashMap<>();
    inputFiles.forEach(inputFile -> {
      TsConfigFile tsconfig = tsConfigFiles
        .stream()
        .filter(tsConfigFile -> tsConfigFile.test(inputFile))
        .findFirst()
        .orElse(UNMATCHED_CONFIG);
      LOG.debug("{} matched {}", inputFile, tsconfig);
      result.computeIfAbsent(tsconfig, t -> new ArrayList<>()).add(inputFile);
    });
    return result;
  }

  @Override
  public String toString() {
    return filename;
  }
}