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/*
 * This file is a part of BSL Common library.
 *
 * Copyright (c) 2021 - 2024
 * Tymko Oleg , Maximov Valery  and contributors
 *
 * SPDX-License-Identifier: LGPL-3.0-or-later
 *
 * BSL Common library 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 Common library 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 Common library.
 */
package com.github._1c_syntax.bsl.support;

import lombok.EqualsAndHashCode;
import lombok.Getter;

import java.util.Locale;
import java.util.regex.Pattern;

/**
 * Класс реализующий объект для хранения режима совместимости конфигурации
 */
@EqualsAndHashCode
public class CompatibilityMode {
  private static final String VERSION8_1 = "Version8_1";
  private static final String DONT_USE = "DontUse";
  private static final int MAX_VERSION = 99;
  private static final int THIRD_VERSION = 3;
  private static final int VERSION_POSITION = 2;
  private static final Pattern VERSION_SPLITTER = Pattern.compile("([_.])");

  @Getter
  private static final int MAJOR = 8;
  @Getter
  private int minor;
  @Getter
  private int version;

  public CompatibilityMode() {
    this(DONT_USE);
  }

  public CompatibilityMode(String value) {

    if (value.equalsIgnoreCase(DONT_USE) || value.isEmpty()) {
      setVersionComponents(THIRD_VERSION, MAX_VERSION);
      return;
    }

    if (value.equals(VERSION8_1)) {
      setVersionComponents(1, 0);
      return;
    }

    // Разбор версии, например Version_8_3_10
    String newValue = value.toUpperCase(Locale.ENGLISH).replace("VERSION_", "");

    String[] array = VERSION_SPLITTER.split(newValue);
    setVersionComponents(Integer.parseInt(array[1]), Integer.parseInt(array[VERSION_POSITION]));

  }

  public CompatibilityMode(int minor, int version) {
    setVersionComponents(minor, version);
  }

  /**
   * Выполняет сравнение двух режимов совместимости
   *
   * @param versionA - Первый режим совместимости
   * @param versionB - Второй режим совместимости
   * @return - Результат сравнения
   * 0 - равны
   * 1 - вторая версия больше
   * -1 - первая версия больше
   */
  public static int compareTo(CompatibilityMode versionA, CompatibilityMode versionB) {
    var result = 1;
    if (versionA.minor == versionB.minor) {
      if (versionA.version == versionB.version) {
        result = 0;
      } else if (versionA.version > versionB.version) {
        result = -1;
      }
    } else if (versionA.minor > versionB.minor) {
      result = -1;
    }
    return result;
  }

  /**
   * Выполняет сравнение двух режимов совместимости, используя в качестве второй версии - строковое представление
   *
   * @param versionA - Первый режим совместимости
   * @param versionB - Второй режим совместимости в виде строки вида Version_8_3_10
   * @return - Результат сравнения
   * 0 - равны
   * 1 - вторая версия больше
   * -1 - первая версия больше
   */
  public static int compareTo(CompatibilityMode versionA, String versionB) {
    return compareTo(versionA, new CompatibilityMode(versionB));
  }

  private void setVersionComponents(int minor, int version) {
    this.minor = minor;
    this.version = version;
  }
}