/**
  * Websocket interface for building control unit
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Christian Ehrlicher, SLSE, 2017-01-30
  */

#include "web_socket_handler.h"
#include "guez_nasat_telegrams.h"
#include <QWebSocket>

/*
python:

import websocket
import json
import time
ws = websocket.create_connection("ws://127.0.0.1:8420")
ws.recv()
ws.recv()


aircraftId == NasatId
uuid, wird wohl ignoriert

d = { 'type' : 'NasatPosition', 'data': {'aircraftId': 1, 'timestamp': -1, 'position': { 'lat': 53.0654, 'lon': 8.9804, 'height': 1000 } } }
d = { 'type' : 'NasatPosition', 'data': {'aircraftId': 1234, 'timestamp': -1, 'position': { 'lat': 53.0000, 'lon': 8.9704, 'height': 1000 } } }
d = { 'type' : 'NasatWeaponRelease', 'data': {'aircraftId': 1234, 'timestamp': -1, 'impactPosition': { 'lat': 53.1000, 'lon': 8.9704 }, 'flightTime': 50, 'munition': 1, 'fuseType': 1, 'releaseMode': 1 } }

// May 2020:
d = { 'type' : 'NasatPosition',  'data': {'aircraftId': 1, 'timestamp': -1, 'position': { 'lat': 53.0653, 'lon': 8.9704, 'height': 1000 } } }
// org
d = {'data':{'aircraftId':6,'altitudeTarget':55,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':925.9999956432568,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6000442504983}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':52.477682630051689,'lon':11.597559126751433}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':33.47476840055018,'lon':11.589788466760311},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':1589384815.5303969},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}
d = {'data':{'aircraftId':4711,'altitudeTarget':55,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':925.9999956432568,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6000442504983}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':52.477682630051689,'lon':11.597559126751433}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':33.47476840055018,'lon':11.589788466760311},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':1589384815.5303969},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}
// Bremen
d = {'data':{'aircraftId':1,'altitudeTarget':55,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':925.9999956432568,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6000442504983}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':52.477682630051689,'lon':11.597559126751433}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':33.47476840055018,'lon':11.589788466760311},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':1589384815.5303969},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}
d = {'data':{'aircraftId':1,'altitudeTarget':55,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':925.9,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':53.06,'lon':8.97}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':53.06,'lon':8.971},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':-1},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}

d = {'data':{'aircraftId':1,'altitudeTarget':55,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':725.9999956432568,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6000442504983}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':52.477682630051689,'lon':11.597559126751433}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':33.47476840055018,'lon':11.589788466760311},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':1589384815.5303969},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}

d = {'data':{'aircraftId':1,'altitudeTarget':56,'altitudeTargetMode':1, 'distance2InitialPointMode':1,'distanceInitialPoint2Target':925.9,'finalAttackHeading':{'heading':120,'headingHigh':270,'headingLow':10},'finalAttackHeadingMode':2,'friendlies':{'bearing':88,'distance':333.6}, 'heading2InitialPointMode':2,'headingInitialPoint2Target':315,'initialPoint':{'lat':53.06,'lon':8.97}, 'initialPointMode':1,'modeFriendlies':1,'targetPosition':{'lat':53.06,'lon':8.971},'targetPositionMode':1,'timeForTarget':57600,'timeForTargetMode':2,'timestamp':-1},'type':'NasatNineLiner','uuid':'blasdbasd-kjladjaslasdklj'}

// 2021-01-15 12:13:33.027 DEBUG GNA::TcpSocketHandler |#| incoming telegram: {"data":{"aircraftId":99,"flightTime":5.3000001907348633,"fuseType":1,"impactPosition":{"lat":52.473540999999997,"lon":11.582856},"munition":2,"releaseMode":0,"timestamp":1610712812.968688},"type":"NasatWeaponRelease","uuid":"3d564e8c-b3a0-4687-a365-0893cf84c26e"} (/Lts/Proxies/GuezNasat/abstract_socket_handler.cpp:53)
// flightTime -> Flugzeit des Geschosses vom AusklingPunkt bis zum Einschlag!?!
d = {'data':{'aircraftId':99,'flightTime':5.3000001907348633,'fuseType':1,'impactPosition':{'lat':52.473540999999997,'lon':11.582856},'munition':2,'releaseMode':0,'timestamp':-1},'type':'NasatWeaponRelease','uuid':'Blalaa'}

d = f"Hallo"


ws.send(json.dumps(d))
ws.close()
*/

/*
switch tp Filips simulator:

-- simulate movement:
python nasat_simulator.py -a1
                           ^ aircraft Id

-- simulate NineLiner:
-- uses nine_liner_template.json and the embedded tele. But teleTYPE has to be specified explicit:
python nasat_simulator.py -a1 -f nine_liner_template.json -t NasatNineLiner

-- simulate NasatWeaponRelease:
uses XY.json and the embedded tele. But teleTYPE has to be specified explicit:
(small distance of NineLiner and Impact of NasatWeaponRelease is intended)
python nasat_simulator.py -a1 -f nasat_weapon_release_template.json -t NasatWeaponRelease

*/

namespace GuezNasat
{
WebSocketHandler::WebSocketHandler(QObject *parent)
  : AbstractSocketHandler("WebSocketHandler", parent)
  , m_webSocketServer(new QWebSocketServer(QStringLiteral("GNA"), QWebSocketServer::NonSecureMode, this))
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

WebSocketHandler::~WebSocketHandler()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  for (auto s : qAsConst(m_webSockets))
  {
    s->disconnect(this);
    s->close();
  }
  qDeleteAll(m_webSockets);
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

bool WebSocketHandler::init(quint16 listenPort)
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START, listenPort=" << listenPort;
  if (!m_webSocketServer->listen(QHostAddress::Any, listenPort))
  {
    WARNING_LOG(m_logger) << "Cannot listen on port " << listenPort << " - aborting";
    return false;
  }
  DEBUG_LOG(m_logger) << "Listening on port " << listenPort;
  connect(m_webSocketServer, &QWebSocketServer::newConnection,
          this, &WebSocketHandler::onNewConnection);

  TRACE_LOG(m_logger) << LOGFUNCTION << " END, listenPort=" << listenPort;
  return true;
}

void WebSocketHandler::onNewConnection()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  QWebSocket *ws = m_webSocketServer->nextPendingConnection();
  if (!ws)
    return;
  NOTICE_LOG(m_logger) << "New websocket connection from " << ws->peerAddress().toString()
                      << ":" << ws->peerPort() << ", ptr: " << ws;

  connect(ws, &QWebSocket::textMessageReceived,
          this, &WebSocketHandler::onTextMessageReceived);
  connect(ws, &QWebSocket::disconnected,
          this, &WebSocketHandler::onWebSocketDisconnected);

  m_webSockets += ws;
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

bool WebSocketHandler::sendTelegramInternal(const QByteArray &tele)
{
  const QString msg = QString::fromUtf8(tele);
  bool bOk = false;
  for (QWebSocket *ws : qAsConst(m_webSockets))
  {
    if (ws->sendTextMessage(msg))
      bOk = true;
  }
  return bOk;
}

void WebSocketHandler::onTextMessageReceived(const QString &msg)
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START, msg='" << msg << "'";
  const QByteArray baJson = msg.toUtf8();
  textMessageReceived(baJson);
  TRACE_LOG(m_logger) << LOGFUNCTION << " END, msg='" << msg << "'";
}

void WebSocketHandler::onWebSocketDisconnected()
{
  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
  QWebSocket *ws = qobject_cast<QWebSocket *>(sender());
  if (!ws)
    return;
  NOTICE_LOG(m_logger) << "Websocket connection closed, ptr: " << ws;
  m_webSockets.remove(ws);
  ws->deleteLater();
  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
}

} // namespace GuezNasat