/*
    * Copyright 2020-2023 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware.platform.mac;
   
   import java.util.ArrayList;
   import java.util.List;
   import java.util.Locale;
  
  import oshi.annotation.concurrent.Immutable;
  import oshi.hardware.GraphicsCard;
  import oshi.hardware.common.AbstractGraphicsCard;
  import oshi.util.Constants;
  import oshi.util.ExecutingCommand;
  import oshi.util.ParseUtil;
  
  /**
   * Graphics card info obtained by system_profiler SPDisplaysDataType.
   */
  @Immutable
  final class MacGraphicsCard extends AbstractGraphicsCard {
  
      /**
       * Constructor for MacGraphicsCard
       *
       * @param name        The name
       * @param deviceId    The device ID
       * @param vendor      The vendor
       * @param versionInfo The version info
       * @param vram        The VRAM
       */
      MacGraphicsCard(String name, String deviceId, String vendor, String versionInfo, long vram) {
          super(name, deviceId, vendor, versionInfo, vram);
      }
  
      /**
       * public method used by {@link oshi.hardware.common.AbstractHardwareAbstractionLayer} to access the graphics cards.
       *
       * @return List of {@link oshi.hardware.platform.mac.MacGraphicsCard} objects.
       */
      public static List<GraphicsCard> getGraphicsCards() {
          List<GraphicsCard> cardList = new ArrayList<>();
          List<String> sp = ExecutingCommand.runNative("system_profiler SPDisplaysDataType");
          String name = Constants.UNKNOWN;
          String deviceId = Constants.UNKNOWN;
          String vendor = Constants.UNKNOWN;
          List<String> versionInfoList = new ArrayList<>();
          long vram = 0;
          int cardNum = 0;
          for (String line : sp) {
              String[] split = line.trim().split(":", 2);
              if (split.length == 2) {
                  String prefix = split[0].toLowerCase(Locale.ROOT);
                  if (prefix.equals("chipset model")) {
                      // Save previous card
                      if (cardNum++ > 0) {
                          cardList.add(new MacGraphicsCard(name, deviceId, vendor,
                                  versionInfoList.isEmpty() ? Constants.UNKNOWN : String.join(", ", versionInfoList),
                                  vram));
                          versionInfoList.clear();
                      }
                      name = split[1].trim();
                  } else if (prefix.equals("device id")) {
                      deviceId = split[1].trim();
                  } else if (prefix.equals("vendor")) {
                      vendor = split[1].trim();
                  } else if (prefix.contains("version") || prefix.contains("revision")) {
                      versionInfoList.add(line.trim());
                  } else if (prefix.startsWith("vram")) {
                      vram = ParseUtil.parseDecimalMemorySizeToBinary(split[1].trim());
                  }
              }
          }
          cardList.add(new MacGraphicsCard(name, deviceId, vendor,
                  versionInfoList.isEmpty() ? Constants.UNKNOWN : String.join(", ", versionInfoList), vram));
          return cardList;
      }
  }