package unsw.blackout;

import java.util.Optional;

import unsw.utils.Angle;
import unsw.utils.MathsHelper;
import static unsw.utils.MathsHelper.RADIUS_OF_JUPITER;

public abstract class DeviceBase extends EntityBase {

    /**
     * DeviceBase is an abstract class containing common functionality between devices.
     */
    public DeviceBase(String deviceID, Angle position) {
        super(deviceID, position, RADIUS_OF_JUPITER);
    }

    @ Override
    final public double getVelocity() {
        return 0.0; // Devices do not move.
    }
    @ Override
    final protected boolean isSupportedEntity(EntityBase entity) {
        if (entity instanceof DeviceBase) {
            return false;
        }
        return true;
    }
    @ Override
    final protected boolean isPhysicallyReachable(EntityBase entity) {
        if (!(entity instanceof SatelliteBase)) {
            return false;
        }
        if (!MathsHelper.isVisible(entity.getHeight(), entity.getAngle(), this.getAngle())) {
            return false;
        }
        if (MathsHelper.getDistance(entity.getHeight(), entity.getAngle(), this.getAngle()) > this.getRange()) {
            return false;
        }
        return true;
    }
    
    final protected Optional<Integer> getFileStoreLimit() {
        return Optional.empty(); // Infinite file storage limit.
    }
    final protected Optional<Integer> getByteStoreLimit() {
        return Optional.empty(); // Infinite byte storage limit.
    }
    final protected Optional<Integer> getByteDownloadSpeed() {
        return Optional.empty(); // Infinite download speed
    }
    final protected Optional<Integer> getByteUploadSpeed() {
        return Optional.empty(); // Infinite upload speed.
    }

    /**
     * Adds a file without any bandwidth operation taking place.
     */
    void addFile(String filename, String contents) {
        this.getReceivedFiles().add(new File(filename, contents, contents.length(), this.getId()));
    }
}