/*
 * Copyright (C) 2023 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.telephony.satellite;

import android.annotation.FlaggedApi;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.os.Parcel;
import android.os.Parcelable;

import com.android.internal.telephony.flags.Flags;

import java.util.Objects;

/**
 * Antenna direction is provided as X/Y/Z values corresponding to the direction of the antenna
 * main lobe as a unit vector in CTIA coordinate system (as specified in Appendix A of Wireless
 * device CTIA OTAn test plan). CTIA coordinate system is defined relative to device’s screen
 * when the device is held in default portrait mode with screen facing the user:
 *
 * Z axis is vertical along the plane of the device with positive Z pointing up and negative z
 * pointing towards bottom of the device
 * Y axis is horizontal along the plane of the device with positive Y pointing towards right of
 * the phone screen and negative Y pointing towards left
 * X axis is orthogonal to the Y-Z plane (phone screen), pointing away from the phone screen for
 * positive X and pointing away from back of the phone for negative X.
 * @hide
 */
@SystemApi
@FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
public final class AntennaDirection implements Parcelable {
    /** Antenna x axis direction. */
    private float mX;

    /** Antenna y axis direction. */
    private float mY;

    /** Antenna z axis direction. */
    private float mZ;

    /**
     * @hide
     */
    public AntennaDirection(float x, float y, float z) {
        mX = x;
        mY = y;
        mZ = z;
    }

    private AntennaDirection(Parcel in) {
        readFromParcel(in);
    }

    @Override
    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public int describeContents() {
        return 0;
    }

    @Override
    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public void writeToParcel(@NonNull Parcel out, int flags) {
        out.writeFloat(mX);
        out.writeFloat(mY);
        out.writeFloat(mZ);
    }

    @NonNull
    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public static final Creator<AntennaDirection> CREATOR =
            new Creator<>() {
                @Override
                public AntennaDirection createFromParcel(Parcel in) {
                    return new AntennaDirection(in);
                }

                @Override
                public AntennaDirection[] newArray(int size) {
                    return new AntennaDirection[size];
                }
            };

    @Override
    @NonNull public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("X:");
        sb.append(mX);
        sb.append(",");

        sb.append("Y:");
        sb.append(mY);
        sb.append(",");

        sb.append("Z:");
        sb.append(mZ);
        return sb.toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        AntennaDirection that = (AntennaDirection) o;
        return mX == that.mX
                && mY == that.mY
                && mZ == that.mZ;
    }

    @Override
    public int hashCode() {
        return Objects.hash(mX, mY, mZ);
    }

    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public float getX() {
        return mX;
    }

    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public float getY() {
        return mY;
    }

    @FlaggedApi(Flags.FLAG_OEM_ENABLED_SATELLITE_FLAG)
    public float getZ() {
        return mZ;
    }

    private void readFromParcel(Parcel in) {
        mX = in.readFloat();
        mY = in.readFloat();
        mZ = in.readFloat();
    }
}