package javapns.devices;

import java.util.*;

import org.apache.log4j.*;

import javapns.devices.implementations.basic.*;
import javapns.notification.*;

public class Devices {

	private static final int UNEFFICIENCY_THRESHOLD = 500;

	public static final Logger logger = Logger.getLogger(Devices.class);


	@SuppressWarnings("unchecked")
	public static List<Device> asDevices(Object rawList) {
		List<Device> list = new Vector<Device>();
		if (rawList == null) return list;

		if (rawList instanceof List) {
			List devices = (List) rawList;
			if (devices == null || devices.size() == 0) return list;
			Object firstDevice = devices.get(0);
			if (firstDevice instanceof Device) return devices;
			else if (firstDevice instanceof String) {
				for (Object token : devices) {
					BasicDevice device = new BasicDevice();
					device.setToken((String) token);
					list.add(device);
				}
			}
		} else if (rawList instanceof String[]) {
			String[] tokens = (String[]) rawList;
			for (String token : tokens) {
				BasicDevice device = new BasicDevice();
				device.setToken(token);
				list.add(device);
			}
		} else if (rawList instanceof Device[]) {
			Device[] dvs = (Device[]) rawList;
			return Arrays.asList(dvs);
		} else if (rawList instanceof String) {
			BasicDevice device = new BasicDevice();
			device.setToken((String) rawList);
			list.add(device);
		} else if (rawList instanceof Device) {
			list.add((Device) rawList);
		} else throw new IllegalArgumentException("Device list type not supported. Supported types are: String[], List<String>, Device[], List<Device>, String and Device");
		return list;
	}


	@SuppressWarnings("unchecked")
	public static List<PayloadPerDevice> asPayloadsPerDevices(Object rawList) {
		List<PayloadPerDevice> list = new Vector<PayloadPerDevice>();
		if (rawList == null) return list;
		if (rawList instanceof List) {
			List devices = (List) rawList;
			if (devices == null || devices.size() == 0) return list;
			return devices;
		} else if (rawList instanceof PayloadPerDevice[]) {
			PayloadPerDevice[] dvs = (PayloadPerDevice[]) rawList;
			return Arrays.asList(dvs);
		} else if (rawList instanceof PayloadPerDevice) {
			list.add((PayloadPerDevice) rawList);
		} else throw new IllegalArgumentException("PayloadPerDevice list type not supported. Supported types are: PayloadPerDevice[], List<PayloadPerDevice> and PayloadPerDevice");
		return list;
	}


	public static <T> void evaluateEfficiency(List<T> list) {
		int size = list.size();
		if (size > UNEFFICIENCY_THRESHOLD) {
			logger.warn("DEVICES WARNING: Pushing more than " + UNEFFICIENCY_THRESHOLD + " notifications (your attempt: " + size + ") is not recommended with this method.\n You should consider using javapns.notification.transmission.NotificationThreads for increased reliability and efficiency.");
		}
	}

}