/*
    * Copyright 2016-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware.common;
   
   import static oshi.util.Memoizer.memoize;
   
   import java.util.function.Supplier;
  
  import oshi.annotation.concurrent.Immutable;
  import oshi.hardware.Baseboard;
  import oshi.hardware.ComputerSystem;
  import oshi.hardware.Firmware;
  
  /**
   * Computer System data.
   */
  @Immutable
  public abstract class AbstractComputerSystem implements ComputerSystem {
  
      private final Supplier<Firmware> firmware = memoize(this::createFirmware);
  
      private final Supplier<Baseboard> baseboard = memoize(this::createBaseboard);
  
      @Override
      public Firmware getFirmware() {
          return firmware.get();
      }
  
      /**
       * Instantiates the platform-specific {@link Firmware} object
       *
       * @return platform-specific {@link Firmware} object
       */
      protected abstract Firmware createFirmware();
  
      @Override
      public Baseboard getBaseboard() {
          return baseboard.get();
      }
  
      /**
       * Instantiates the platform-specific {@link Baseboard} object
       *
       * @return platform-specific {@link Baseboard} object
       */
      protected abstract Baseboard createBaseboard();
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          sb.append("manufacturer=").append(getManufacturer()).append(", ");
          sb.append("model=").append(getModel()).append(", ");
          sb.append("serial number=").append(getSerialNumber()).append(", ");
          sb.append("uuid=").append(getHardwareUUID());
          return sb.toString();
      }
  }