package org.manzerbredes.open_klm.drivers;

import java.io.IOException;
import java.util.HashMap;
import org.javatuples.Pair;
import com.codeminders.hidapi.*;


/**
 * 
 * Driver to communicate with the keyboard device
 * using HIDAPI.
 * 
 * @author Manzerbredes
 *
 */
public class Device_1770_ff00 implements BasicDriver{
	
	
	
	/**
	 * Device entry
	 */
	HIDDevice device;
	
	/**
	 * Define Keyboard color state
	 */
	private HashMap<Region, Pair<Color,Intensity>> KeyboardColor=new HashMap<>();
	
	/**
	 * Define Keyboard mode state
	 */
	private Mode mode=Mode.NORMAL;
	
	
	
	
	
	/**
	 * Init driver and HIDAPI library
	 * 
	 * @throws InstantiationException 
	 */
	public Device_1770_ff00() throws InstantiationException{
		// Init HIDAPI Library
		com.codeminders.hidapi.ClassPathLibraryLoader.loadNativeHIDLibrary();
		
		// Try not bind the device
		try {
			HIDManager man=HIDManager.getInstance();
			this.device=man.openById(0x1770, 0xff00, null);
			if(this.device==null)
				throw new Exception();
		}
		catch(Exception e){
			throw new InstantiationException("Failed to instanciate driver. Device not found or permission denied (try as root)");
		}
		
	}
	
	
	/**
	 * Build a byte[] report
	 * 
	 * @param a
	 * @param b
	 * @param c
	 * @param d
	 * @param e
	 * @param f
	 * @param g
	 * @param h
	 * @return
	 */
	private byte[] getReport(int a, int b, int c, int d, int e, int f, int g, int h){
		byte[] message = new byte[8];
		message[0] = (byte) a;
		message[1] = (byte) b;
		message[2] = (byte) c;
		message[3] = (byte) d;
		message[4] = (byte) e;
		message[5] = (byte) f;
		message[6] = (byte) g;
		message[7] = (byte) h;
		return message;
	}
	
	


	

	private void commit(){
		try {
			this.device.sendFeatureReport(this.getReport(1,2,65,this.mode.intValue(),0,0,0,236));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}


	@Override
	public void setRegionColor(Region region, Color color, Intensity intensity) {
		try {
			this.device.sendFeatureReport(this.getReport(1,2,66,region.intValue(),color.intValue(),intensity.intValue(),0,236));
			this.commit();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
	}


	@Override
	public void setColor(Color color, Intensity intensity) {
		try {
			this.device.sendFeatureReport(this.getReport(1,2,66,Region.LEFT.intValue(),color.intValue(),intensity.intValue(),0,236));
			this.device.sendFeatureReport(this.getReport(1,2,66,Region.MIDDLE.intValue(),color.intValue(),intensity.intValue(),0,236));
			this.device.sendFeatureReport(this.getReport(1,2,66,Region.RIGHT.intValue(),color.intValue(),intensity.intValue(),0,236));
			this.commit();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}


	@Override
	public void setMode(Mode mode) {
		this.mode=mode;
		this.commit();
	}
	
}