content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.net.lowpan;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  import com.android.internal.util.HexDump;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Objects;
  import java.util.TreeSet;
  
  /**
   * Describes a LoWPAN Beacon
   *
   * @hide
   */
  // @SystemApi
  public class LowpanBeaconInfo implements Parcelable {
      public static final int UNKNOWN_RSSI = Integer.MAX_VALUE;
      public static final int UNKNOWN_LQI = 0;
  
      private LowpanIdentity mIdentity;
      private int mRssi = UNKNOWN_RSSI;
      private int mLqi = UNKNOWN_LQI;
      private byte[] mBeaconAddress = null;
      private final TreeSet<Integer> mFlags = new TreeSet<>();
  
      public static final int FLAG_CAN_ASSIST = 1;
  
      /** @hide */
      public static class Builder {
          final LowpanIdentity.Builder mIdentityBuilder = new LowpanIdentity.Builder();
          final LowpanBeaconInfo mBeaconInfo = new LowpanBeaconInfo();
  
          public Builder setLowpanIdentity(LowpanIdentity x) {
              mIdentityBuilder.setLowpanIdentity(x);
              return this;
          }
  
          public Builder setName(String x) {
              mIdentityBuilder.setName(x);
              return this;
          }
  
          public Builder setXpanid(byte x[]) {
              mIdentityBuilder.setXpanid(x);
              return this;
          }
  
          public Builder setPanid(int x) {
              mIdentityBuilder.setPanid(x);
              return this;
          }
  
          public Builder setChannel(int x) {
              mIdentityBuilder.setChannel(x);
              return this;
          }
  
          public Builder setType(String x) {
              mIdentityBuilder.setType(x);
              return this;
          }
  
          public Builder setRssi(int x) {
              mBeaconInfo.mRssi = x;
              return this;
          }
  
          public Builder setLqi(int x) {
              mBeaconInfo.mLqi = x;
              return this;
          }
  
          public Builder setBeaconAddress(byte x[]) {
              mBeaconInfo.mBeaconAddress = (x != null ? x.clone() : null);
              return this;
          }
  
          public Builder setFlag(int x) {
              mBeaconInfo.mFlags.add(x);
              return this;
          }
  
          public Builder setFlags(Collection<Integer> x) {
              mBeaconInfo.mFlags.addAll(x);
              return this;
          }
  
          public LowpanBeaconInfo build() {
              mBeaconInfo.mIdentity = mIdentityBuilder.build();
              if (mBeaconInfo.mBeaconAddress == null) {
                  mBeaconInfo.mBeaconAddress = new byte[0];
              }
              return mBeaconInfo;
          }
      }
  
      private LowpanBeaconInfo() {}
  
      public LowpanIdentity getLowpanIdentity() {
          return mIdentity;
      }
  
      public int getRssi() {
          return mRssi;
      }
  
      public int getLqi() {
          return mLqi;
      }
  
      public byte[] getBeaconAddress() {
          return mBeaconAddress.clone();
      }
  
      public Collection<Integer> getFlags() {
          return (Collection<Integer>) mFlags.clone();
      }
  
      public boolean isFlagSet(int flag) {
          return mFlags.contains(flag);
      }
  
      @Override
      public String toString() {
          StringBuffer sb = new StringBuffer();
  
          sb.append(mIdentity.toString());
  
          if (mRssi != UNKNOWN_RSSI) {
              sb.append(", RSSI:").append(mRssi).append("dBm");
          }
  
          if (mLqi != UNKNOWN_LQI) {
              sb.append(", LQI:").append(mLqi);
          }
  
          if (mBeaconAddress.length > 0) {
              sb.append(", BeaconAddress:").append(HexDump.toHexString(mBeaconAddress));
          }
  
          for (Integer flag : mFlags) {
              switch (flag.intValue()) {
                  case FLAG_CAN_ASSIST:
                      sb.append(", CAN_ASSIST");
                      break;
                  default:
                      sb.append(", FLAG_").append(Integer.toHexString(flag));
                      break;
              }
          }
  
          return sb.toString();
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(mIdentity, mRssi, mLqi, Arrays.hashCode(mBeaconAddress), mFlags);
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof LowpanBeaconInfo)) {
              return false;
          }
          LowpanBeaconInfo rhs = (LowpanBeaconInfo) obj;
          return mIdentity.equals(rhs.mIdentity)
                  && Arrays.equals(mBeaconAddress, rhs.mBeaconAddress)
                  && mRssi == rhs.mRssi
                  && mLqi == rhs.mLqi
                  && mFlags.equals(rhs.mFlags);
      }
  
      /** Implement the Parcelable interface. */
      @Override
      public int describeContents() {
          return 0;
      }
  
      /** Implement the Parcelable interface. */
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          mIdentity.writeToParcel(dest, flags);
          dest.writeInt(mRssi);
          dest.writeInt(mLqi);
          dest.writeByteArray(mBeaconAddress);
  
          dest.writeInt(mFlags.size());
          for (Integer val : mFlags) {
              dest.writeInt(val);
          }
      }
  
      /** Implement the Parcelable interface. */
      public static final @android.annotation.NonNull Creator<LowpanBeaconInfo> CREATOR =
              new Creator<LowpanBeaconInfo>() {
                  public LowpanBeaconInfo createFromParcel(Parcel in) {
                      Builder builder = new Builder();
  
                      builder.setLowpanIdentity(LowpanIdentity.CREATOR.createFromParcel(in));
  
                      builder.setRssi(in.readInt());
                      builder.setLqi(in.readInt());
  
                      builder.setBeaconAddress(in.createByteArray());
  
                      for (int i = in.readInt(); i > 0; i--) {
                          builder.setFlag(in.readInt());
                      }
  
                      return builder.build();
                  }
  
                  public LowpanBeaconInfo[] newArray(int size) {
                      return new LowpanBeaconInfo[size];
                  }
              };
  }
  