package com.smartdevicelink.api;

import android.support.annotation.NonNull;

import com.smartdevicelink.proxy.interfaces.ISdl;

/**
 * <strong>BaseSubManager</strong> <br>
 *
 * Note: This class is extended by SubManagers <br>
 *
 * It is broken down to these areas: <br>
 *
 * 1. <br>
 */
public abstract class BaseSubManager {

	// states - if this gets more complicated we can move elsewhere
	private int state;
	private final Object STATE_LOCK = new Object();
	public static final int SETTING_UP = 1, READY = 2, SHUTDOWN = 3, ERROR = 4, LIMITED = 5;
	protected final ISdl internalInterface;
	private CompletionListener completionListener;

	public BaseSubManager(@NonNull ISdl internalInterface){
		this.internalInterface = internalInterface;
		transitionToState(SETTING_UP);
	}

	/**
	 * Starts up a BaseSubManager, and calls provided callback once BaseSubManager is done setting up or failed setup.
	 * @param listener CompletionListener that is called once the BaseSubManager's state is READY or ERROR
	 */
	public void start(CompletionListener listener){
		this.completionListener = listener;
		if((state == READY || state == ERROR) && completionListener != null){
			completionListener.onComplete(state == READY);
			completionListener = null;
		}
	}

	/**
	 * <p>Called when manager is being torn down</p>
	 */
	public void dispose(){
		transitionToState(SHUTDOWN);
	}

	protected void transitionToState(int state) {
		synchronized (STATE_LOCK) {
			this.state = state;
		}
		if(state == READY && completionListener != null){
			completionListener.onComplete(true);
			completionListener = null;
		}else if(state == ERROR && completionListener != null){
			completionListener.onComplete(false);
			completionListener = null;
		}
	}

	public int getState() {
		synchronized (STATE_LOCK) {
			return state;
		}
	}
}

@@ -496,17 +496,20 @@
 NG_UP = 
-1
+0x00
 , READY 
@@ -514,9 +514,12 @@
 Y = 
-2
+0x30
 , SH
@@ -527,17 +527,20 @@
 TDOWN = 
-3
+0x60
 , ERROR 
@@ -545,9 +545,12 @@
 R = 
-4
+0x90
 , LI
@@ -561,9 +561,12 @@
 D = 
-5
+0xC0
 ;%0A%09p

switch state values to hexadecimal