/*
    * Copyright 2016-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware.platform.linux;
   
   import static oshi.util.Memoizer.memoize;
   
   import java.util.function.Supplier;
  
  import oshi.annotation.concurrent.Immutable;
  import oshi.driver.linux.Sysfs;
  import oshi.driver.linux.proc.CpuInfo;
  import oshi.hardware.common.AbstractBaseboard;
  import oshi.util.Constants;
  import oshi.util.tuples.Quartet;
  
  /**
   * Baseboard data obtained by sysfs
   */
  @Immutable
  final class LinuxBaseboard extends AbstractBaseboard {
  
      private final Supplier<String> manufacturer = memoize(this::queryManufacturer);
      private final Supplier<String> model = memoize(this::queryModel);
      private final Supplier<String> version = memoize(this::queryVersion);
      private final Supplier<String> serialNumber = memoize(this::querySerialNumber);
      private final Supplier<Quartet<String, String, String, String>> manufacturerModelVersionSerial = memoize(
              CpuInfo::queryBoardInfo);
  
      @Override
      public String getManufacturer() {
          return manufacturer.get();
      }
  
      @Override
      public String getModel() {
          return model.get();
      }
  
      @Override
      public String getVersion() {
          return version.get();
      }
  
      @Override
      public String getSerialNumber() {
          return serialNumber.get();
      }
  
      private String queryManufacturer() {
          String result = null;
          if ((result = Sysfs.queryBoardVendor()) == null
                  && (result = manufacturerModelVersionSerial.get().getA()) == null) {
              return Constants.UNKNOWN;
          }
          return result;
      }
  
      private String queryModel() {
          String result = null;
          if ((result = Sysfs.queryBoardModel()) == null
                  && (result = manufacturerModelVersionSerial.get().getB()) == null) {
              return Constants.UNKNOWN;
          }
          return result;
      }
  
      private String queryVersion() {
          String result = null;
          if ((result = Sysfs.queryBoardVersion()) == null
                  && (result = manufacturerModelVersionSerial.get().getC()) == null) {
              return Constants.UNKNOWN;
          }
          return result;
      }
  
      private String querySerialNumber() {
          String result = null;
          if ((result = Sysfs.queryBoardSerial()) == null
                  && (result = manufacturerModelVersionSerial.get().getD()) == null) {
              return Constants.UNKNOWN;
          }
          return result;
      }
  }