package com.ifish.socketNew.codeFactory;

import java.nio.charset.Charset;

import com.ifish.socketNew.model.receive.BackFunctionCodeHeater;
import org.apache.log4j.Logger;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.AttributeKey;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolDecoder;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;

import com.ifish.socketNew.model.send.OrderFunctionCode0;
import com.ifish.socketNew.model.send.OrderFunctionCode1;
import com.ifish.socketNew.model.send.OrderFunctionCode16;
import com.ifish.socketNew.model.send.OrderFunctionCode17;
import com.ifish.socketNew.model.send.OrderFunctionCode5;
import com.ifish.socketNew.model.send.OrderFunctionCode9;


/**
 * 解码
 * 
 * @author
 */

public class ServerDecode implements ProtocolDecoder {

	private final AttributeKey CONTEXT = new AttributeKey(getClass(), "context");
	private final Charset charset;
	private static Logger log = Logger.getLogger(ServerDecode.class);
	
	public ServerDecode() {
		this(Charset.defaultCharset());
	}

	public ServerDecode(Charset charset) {
		this.charset = charset;
	}

	private Context getContext(IoSession session) {
		Context ctx = (Context) session.getAttribute(CONTEXT);
		if (ctx == null) {
			ctx = new Context(charset);
			session.setAttribute(CONTEXT, ctx);
		}
		return ctx;
	}

	@Override
	public void decode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws Exception {
		// 小端模式
		//in.order(ByteOrder.LITTLE_ENDIAN);
		// 先获取上次的处理上下文，其中可能有未处理完的数据
		Context ctx = getContext(session);
		// 先把当前buffer中的数据追加到Context的buffer当中
		ctx.append(in);

		IoBuffer buf = ctx.getBuffer();
		buf.flip();
		//验证
		getValid(session, buf, out);
	}
	
	/**
	 * 验证协议
	 * @param session
	 * @param buf
	 * @param out
	 */
	private void getValid(IoSession session, IoBuffer buf, ProtocolDecoderOutput out){
		int limit = buf.remaining();
		int check_code = buf.position(1).get() & 0xff;

		int length = buf.position(14).get() & 0xff;
		buf.position(0);
		//计算包长度
		if (buf.hasRemaining() && limit == length && length >= 17) {
			//字节转成对象
			doDecode(buf, out, length ,check_code);
		}
		else{
//			log.info(String.format("length error：length:【%s】,limit:【%s】,HexDump:【%s】",length,limit,buf.getHexDump()));
//			log.info("length error：length:【{}】,limit:【{}】,HexDump:【{}】",length,limit,buf.getHexDump());
		}
		buf.position(0);
		buf.clear();
	}
	
	/**
	 * 解码成对象
	 * @param buf
	 * @param out
	 * @param length
	 */
	private void doDecode(IoBuffer buf, ProtocolDecoderOutput out, int length, int check_code) {
		//字节
		byte[] bytes = new byte[length];
		buf.get(bytes);
		buf.flip();
//		log.info("lengthth:【{}】;limit:【{}】,HexDump:【{}】",length,buf.limit(),buf.getHexDump());
		//crc16校验
		//boolean bln = CRC16.calcCrc16(ByteUtil.hexStringToBytes(hexDump));
		switch (length) {
			case 31: {
				functionBackHeater(bytes,buf, out);
				break;
			}//长度为22
			case 22:{
				//设置报警温度
				if(check_code==5){
					functionCode5(buf, out);
				}
				//设备报警
				else if(check_code==9){
					functionCode9(buf, out);
				}
				//模块版本指令
				else if(check_code==16){
					functionCode16(buf, out);
				}
				else{
					out.write(bytes);
				}
				break;
			}
			//长度为24，设备发登录请求
			case 24:{
				if(check_code==1){
					functionCode1(buf, out);
				} else {
					out.write(bytes);
				}
				break;
			}
			//长度为25，手机发登录请求
			case 25:{
				if(check_code==0){
					functionCode0(buf, out);
				} else {
					out.write(bytes);
				}
				break;
			}
			//模块版本指令
			case 42:{
				if(check_code==17){
					functionCode17(buf, out);
				} else {
					out.write(bytes);
				}
				break;
			}
			default:{
				out.write(bytes);
			}
		}
	}

	/**
	 * 设备登陆服务器
	 * @param buf
	 * @param out
	 */
	private void functionCode1(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode1 model = new OrderFunctionCode1();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//登陆信息
		model.setVendor(buf.get());
		model.setHardware_type(buf.get());
		model.setVersion(buf.get());
		byte[] login_ip = model.getLogin_ip();
		for (int i = 0; i < login_ip.length; i++) {
			login_ip[i] = buf.get();
		}
		model.setLogin_ip(login_ip);
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}

	/**
	 * APP登陆服务器
	 * @param buf
	 * @param out
	 */
	private void functionCode0(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode0 model = new OrderFunctionCode0();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//时间
		model.setLongtime(buf.getLong());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}

	/**
	 * 设置报警温度
	 * @param buf
	 * @param out
	 */
	private void functionCode5(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode5 model = new OrderFunctionCode5();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//开启关闭报警，00关，01开，02设置温度
		model.setOnoff(buf.get());
		//低温报警温度
		model.setLow_wendu(buf.getShort());
		//高温报警温度
		model.setHight_wendu(buf.getShort());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}
	/**
	 * 模块版本号
	 * @param buf
	 * @param out
	 */
	private void functionCode16(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode16 model = new OrderFunctionCode16();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//版本
		model.setVersion(buf.get());
		//年
		model.setYear(buf.getShort());
		//月
		model.setMonth(buf.get());
		//日
		model.setDay(buf.get());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}
	/**
	 * 模块版本号
	 * @param buf
	 * @param out
	 */
	private void functionCode17(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode17 model = new OrderFunctionCode17();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//版本
		model.setVersion(buf.get());
		//年
		model.setYear(buf.getShort());
		//月
		model.setMonth(buf.get());
		//日
		model.setDay(buf.get());
		//MCU启动次数
		model.setNumber1(buf.getInt());
		//模块启动次数
		model.setNumber2(buf.getInt());
		//连接路由器次数
		model.setNumber3(buf.getInt());
		//成功连接服务器次数
		model.setNumber4(buf.getInt());
		//尝试连接服务器次数
		model.setNumber5(buf.getInt());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}
	/**
	 * 设备温度报警
	 * @param buf
	 * @param out
	 */
	private void functionCode9(IoBuffer buf, ProtocolDecoderOutput out) {
		OrderFunctionCode9 model = new OrderFunctionCode9();
		//15字节数据包头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());
		//报警温度类型，0是低温报警，1是高温报警
		model.setWarn_type(buf.get());
		//当前设备温度
		model.setWendu(buf.getShort());
		//报警温度
		model.setWarn_wendu(buf.getShort());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}

	private void functionBackHeater(byte[] bytes,IoBuffer buf, ProtocolDecoderOutput out){
		BackFunctionCodeHeater model = new BackFunctionCodeHeater();
		model.setByteMessage(bytes);

		buf.getHexDump();

		//15字节头
		model.setType(buf.get());
		model.setCheck_code(buf.get());
		byte[] src = model.getSrc();
		for (int i = 0; i < src.length; i++) {
			src[i] = buf.get();
		}
		model.setSrc(src);
		byte[] dest = model.getDest();
		for (int i = 0; i < dest.length; i++) {
			dest[i] = buf.get();
		}
		model.setDest(dest);
		model.setRemote_len(buf.get());

		model.setMainNumber(buf.get());
		model.setMainSwitch(buf.get());
		model.setControlState(buf.get());
		model.setWaterTemperature(buf.getShort());
		model.setHeatingTemperature(buf.getShort());
		model.setAlarmSwitch(buf.get());
		model.setPh(buf.getShort());
		model.setLowTemperature(buf.getShort());
		model.setHighTemperature(buf.getShort());
		byte[] crc16_code = model.getCrc16_code();
		for (int i = 0; i < crc16_code.length; i++) {
			crc16_code[i] = buf.get();
		}
		out.write(model);
	}
	@Override
	public void dispose(IoSession session) throws Exception {
		Context ctx = (Context) session.getAttribute(CONTEXT);
		if (ctx != null) {
			session.removeAttribute(CONTEXT);
		}
	}

	@Override
	public void finishDecode(IoSession session, ProtocolDecoderOutput out)
			throws Exception {

	}

}