/*
    * Copyright 2020-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware.platform.unix.solaris;
   
   import static oshi.software.os.unix.solaris.SolarisOperatingSystem.HAS_KSTAT2;
   
   import java.net.NetworkInterface;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.sun.jna.platform.unix.solaris.LibKstat.Kstat;
  
  import oshi.annotation.concurrent.ThreadSafe;
  import oshi.hardware.NetworkIF;
  import oshi.hardware.common.AbstractNetworkIF;
  import oshi.util.platform.unix.solaris.KstatUtil;
  import oshi.util.platform.unix.solaris.KstatUtil.KstatChain;
  
  /**
   * SolarisNetworks class.
   */
  @ThreadSafe
  public final class SolarisNetworkIF extends AbstractNetworkIF {
  
      private static final Logger LOG = LoggerFactory.getLogger(SolarisNetworkIF.class);
  
      private long bytesRecv;
      private long bytesSent;
      private long packetsRecv;
      private long packetsSent;
      private long inErrors;
      private long outErrors;
      private long inDrops;
      private long collisions;
      private long speed;
      private long timeStamp;
  
      public SolarisNetworkIF(NetworkInterface netint) throws InstantiationException {
          super(netint);
          updateAttributes();
      }
  
      /**
       * Gets all network interfaces on this machine
       *
       * @param includeLocalInterfaces include local interfaces in the result
       * @return A list of {@link NetworkIF} objects representing the interfaces
       */
      public static List<NetworkIF> getNetworks(boolean includeLocalInterfaces) {
          List<NetworkIF> ifList = new ArrayList<>();
          for (NetworkInterface ni : getNetworkInterfaces(includeLocalInterfaces)) {
              try {
                  ifList.add(new SolarisNetworkIF(ni));
              } catch (InstantiationException e) {
                  LOG.debug("Network Interface Instantiation failed: {}", e.getMessage());
              }
          }
          return ifList;
      }
  
      @Override
      public long getBytesRecv() {
          return this.bytesRecv;
      }
  
      @Override
      public long getBytesSent() {
          return this.bytesSent;
      }
  
      @Override
      public long getPacketsRecv() {
          return this.packetsRecv;
      }
  
      @Override
      public long getPacketsSent() {
          return this.packetsSent;
      }
  
      @Override
      public long getInErrors() {
          return this.inErrors;
      }
  
      @Override
      public long getOutErrors() {
          return this.outErrors;
      }
  
      @Override
      public long getInDrops() {
          return this.inDrops;
      }
 
     @Override
     public long getCollisions() {
         return this.collisions;
     }
 
     @Override
     public long getSpeed() {
         return this.speed;
     }
 
     @Override
     public long getTimeStamp() {
         return this.timeStamp;
     }
 
     @Override
     public boolean updateAttributes() {
         // Initialize to a sane default value
         this.timeStamp = System.currentTimeMillis();
         if (HAS_KSTAT2) {
             // Use Kstat2 implementation
             return updateAttributes2();
         }
         try (KstatChain kc = KstatUtil.openChain()) {
             Kstat ksp = kc.lookup("link", -1, getName());
             if (ksp == null) { // Solaris 10 compatibility
                 ksp = kc.lookup(null, -1, getName());
             }
             if (ksp != null && kc.read(ksp)) {
                 this.bytesSent = KstatUtil.dataLookupLong(ksp, "obytes64");
                 this.bytesRecv = KstatUtil.dataLookupLong(ksp, "rbytes64");
                 this.packetsSent = KstatUtil.dataLookupLong(ksp, "opackets64");
                 this.packetsRecv = KstatUtil.dataLookupLong(ksp, "ipackets64");
                 this.outErrors = KstatUtil.dataLookupLong(ksp, "oerrors");
                 this.inErrors = KstatUtil.dataLookupLong(ksp, "ierrors");
                 this.collisions = KstatUtil.dataLookupLong(ksp, "collisions");
                 this.inDrops = KstatUtil.dataLookupLong(ksp, "dl_idrops");
                 this.speed = KstatUtil.dataLookupLong(ksp, "ifspeed");
                 // Snap time in ns; convert to ms
                 this.timeStamp = ksp.ks_snaptime / 1_000_000L;
                 return true;
             }
         }
         return false;
     }
 
     private boolean updateAttributes2() {
         Object[] results = KstatUtil.queryKstat2("kstat:/net/link/" + getName() + "/0", "obytes64", "rbytes64",
                 "opackets64", "ipackets64", "oerrors", "ierrors", "collisions", "dl_idrops", "ifspeed", "snaptime");
         if (results[results.length - 1] == null) {
             return false;
         }
         this.bytesSent = results[0] == null ? 0L : (long) results[0];
         this.bytesRecv = results[1] == null ? 0L : (long) results[1];
         this.packetsSent = results[2] == null ? 0L : (long) results[2];
         this.packetsRecv = results[3] == null ? 0L : (long) results[3];
         this.outErrors = results[4] == null ? 0L : (long) results[4];
         this.collisions = results[5] == null ? 0L : (long) results[5];
         this.inDrops = results[6] == null ? 0L : (long) results[6];
         this.speed = results[7] == null ? 0L : (long) results[7];
         // Snap time in ns; convert to ms
         this.timeStamp = (long) results[8] / 1_000_000L;
         return true;
     }
 }