text: /* eslint-disable no-inner-declarations */
  
  module.exports = function(RED) {
      "use strict";
      var fs = require('fs');
      var path = require("path");
      var express = require("express");
      var compression = require("compression");
      var sockjs = require('sockjs');
      var sockets = {};
      RED.log.info("Worldmap version " + require('./package.json').version );
      // add the cgi module for serving local maps.... only if mapserv exists
      if (fs.existsSync((__dirname + '/mapserv'))) {
          RED.httpNode.use("/cgi-bin/mapserv", require('cgi')(__dirname + '/mapserv'));
      }
  
      function worldMap(node, n) {
          RED.nodes.createNode(node,n);
          node.lat = n.lat || "";
          node.lon = n.lon || "";
          node.zoom = n.zoom || "";
          node.layer = n.layer || "";
          node.cluster = n.cluster || "";
          node.maxage = n.maxage || "";
          node.showmenu = n.usermenu || "show";
          node.layers = n.layers || "show";
          node.panlock = n.panlock || "false";
          node.zoomlock = n.zoomlock || "false";
          node.panit = n.panit || "false";
          node.hiderightclick = n.hiderightclick || "false";
          node.coords = n.coords || "none";
          node.showgrid = n.showgrid || "false";
          node.allowFileDrop = n.allowFileDrop || "false";
          node.path = n.path || "/worldmap";
          node.maplist = n.maplist;
          node.overlist = n.overlist;
          node.mapname = n.mapname || "";
          node.mapurl = n.mapurl || "";
          node.mapopt = n.mapopt || "";
          node.mapwms = n.mapwms || false;
          if (n.maplist === undefined) { node.maplist = "OSMG,OSMC,EsriC,EsriS,EsriT,EsriDG,UKOS,SW"; }
          if (n.overlist === undefined) { node.overlist = "DR,CO,RA,DN,HM"; }
          try { node.mapopt2 = JSON.parse(node.mapopt); }
          catch(e) { node.mapopt2 = null; }
  
          if (node.path.charAt(0) != "/") { node.path = "/" + node.path; }
          if (!sockets[node.path]) {
              var libPath = path.posix.join(RED.settings.httpNodeRoot, node.path, 'leaflet', 'sockjs.min.js');
              var sockPath = path.posix.join(RED.settings.httpNodeRoot,node.path,'socket');
              sockets[node.path] = sockjs.createServer({prefix:sockPath, sockjs_url:libPath, log:function(s,e) { return; }});
              sockets[node.path].installHandlers(RED.server);
              sockets[node.path].on('error', function(e) { node.error("Socket Connection Error: "+e.stack); });
          }
          //node.log("Serving "+__dirname+" as "+node.path);
          node.log("started at "+node.path);
          var clients = {};
          RED.httpNode.use(compression());
          RED.httpNode.use(node.path, express.static(__dirname + '/worldmap'));
          // RED.httpNode.use(node.path, express.static(__dirname + '/worldmap', {maxage:3600000}));
  
          var callback = function(client) {
              if (!client.headers.hasOwnProperty("user-agent")) { client.close(); }
              //client.setMaxListeners(0);
              clients[client.id] = client;
              client.on('data', function(message) {
                  message = JSON.parse(message);
                  if (message.action === "connected") {
                      var m = {};
                      var c = {init:true};
                      c.maplist = node.maplist;
                      c.overlist = node.overlist;
                      if (node.layer && node.layer == "Custom") {
                          m.name = node.mapname;
                          m.url = node.mapurl;
                          m.opt = node.mapopt2;
                          if (node.mapwms === true) { m.wms = true; }
                          client.write(JSON.stringify({command:{map:m}}));
                          c.layer = m.name;
                      }
                      else {
                          if (node.layer && node.layer.length > 0) { c.layer = node.layer; }
                      }
                      if (node.lat && node.lat.length > 0) { c.lat = node.lat; }
                      if (node.lon && node.lon.length > 0) { c.lon = node.lon; }
                      if (node.zoom && node.zoom.length > 0) { c.zoom = node.zoom; }
                      if (node.cluster && node.cluster.length > 0) { c.cluster = node.cluster; }
                      if (node.maxage && node.maxage.length > 0) { c.maxage = node.maxage; }
                      c.showmenu = node.showmenu;
                      c.panit = node.panit;
                      c.panlock = node.panlock;
                      c.zoomlock = node.zoomlock;
                      c.showlayers = node.layers;
                      c.grid = {showgrid:node.showgrid};
                      c.hiderightclick = node.hiderightclick;
                      c.allowFileDrop = node.allowFileDrop;
                      c.coords = node.coords;
                      if (node.name) { c.toptitle = node.name; }
                      //console.log("INIT",c)
                      client.write(JSON.stringify({command:c}));
                  }
              });
              client.on('close', function() {
                  delete clients[client.id];
                  node.status({fill:"green",shape:"ring",text:"connected "+Object.keys(clients).length,_sessionid:client.id});
              });
              node.status({fill:"green",shape:"dot",text:"connected "+Object.keys(clients).length,_sessionid:client.id});
          }
          node.on('input', function(msg) {
              if (msg.hasOwnProperty("_sessionid")) {
                  if (clients.hasOwnProperty(msg._sessionid)) {
                      clients[msg._sessionid].write(JSON.stringify(msg.payload));
                  }
              }
              else {
                  for (var c in clients) {
                      if (clients.hasOwnProperty(c)) {
                          clients[c].write(JSON.stringify(msg.payload));
                      }
                  }
              }
          });
          node.on("close", function() {
              for (var c in clients) {
                  if (clients.hasOwnProperty(c)) {
                      clients[c].end();
                  }
              }
              clients = {};
              sockets[node.path].removeListener('connection', callback);
              for (var i=0; i < RED.httpNode._router.stack.length; i++) {
                  var r = RED.httpNode._router.stack[i];
                  if ((r.name === "serveStatic") && (r.regexp.test(node.path))) {
                      RED.httpNode._router.stack.splice(i, 1)
                  }
              }
              node.status({});
          });
          sockets[node.path].on('connection', callback);
      }
      var WorldMap = function(n) {
          worldMap(this, n);
      }
      RED.nodes.registerType("worldmap",WorldMap);
  
      function HTML(ui, config) {
          var width = config.width;
          if (width == 0) {
              var group = RED.nodes.getNode(config.group);
              if (group) { width = group.config.width; }
          }
          var height = config.height;
          if (height == 0) { height = 10; }
          var size = ui.getSizes();
          var frameWidth = (size.sx + size.cx) * width - size.cx;
          var frameHeight = (size.sy + size.cy) * height - size.cy;
          var url = encodeURI(config.path);
          var html = `<style>.nr-dashboard-ui_worldmap{padding:0;}</style><div style="overflow:hidden;">
  <iframe src="${url}" width="${frameWidth}px" height="${frameHeight}px" style="border:none;"></iframe></div>`;
          return html;
      }
  
      function checkConfig(node, conf) {
          if (!conf || !conf.hasOwnProperty("group")) {
              node.error("no group");
              return false;
          }
          return true;
      }
  
      var ui = undefined;
      try {
          ui = RED.require("node-red-dashboard")(RED);
      }
      catch(e) {
          RED.log.info("Node-RED Dashboard not found - ui_worldmap not installed.");
      }
      setTimeout( function() {
          if (ui) {
              function UIWorldMap(config) {
                  try {
                      var node = this;
                      worldMap(node, config);
                      var done = null;
                      if (checkConfig(node, config)) {
                          var html = HTML(ui, config);
                          done = ui.addWidget({
                              node: node,
                              order: config.order,
                              group: config.group,
                              width: config.width,
                              height: config.height,
                              format: html,
                              templateScope: "local",
                              emitOnlyNewValues: false,
                              forwardInputMessages: false,
                              storeFrontEndInputAsState: false,
                              convertBack: function (value) {
                                  return value;
                              },
                              beforeEmit: function(msg, value) {
                                  return { msg: { items: value } };
                              },
                              beforeSend: function (msg, orig) {
                                  if (orig) { return orig.msg; }
                              },
                              initController: function($scope, events) {
                              }
                          });
                      }
                  }
                  catch (e) {
                      console.log(e);
                  }
                  node.on("close", function() {
                      if (done) { done(); }
                  });
              }
              setImmediate(function() { RED.nodes.registerType("ui_worldmap", UIWorldMap) });
          }
      }, 100);
  
  
      var WorldMapIn = function(n) {
          RED.nodes.createNode(this,n);
          this.path = n.path || "/worldmap";
          this.events = n.events || "connect,disconnect,point,bounds,files,draw,other";
          if (this.path.charAt(0) != "/") { this.path = "/" + this.path; }
          if (!sockets[this.path]) {
              var libPath = path.posix.join(RED.settings.httpNodeRoot, this.path, 'leaflet', 'sockjs.min.js');
              var sockPath = path.posix.join(RED.settings.httpNodeRoot,this.path,'socket');
              sockets[this.path] = sockjs.createServer({prefix:sockPath, sockjs_url:libPath, log:function() { return; }});
              sockets[this.path].installHandlers(RED.server);
          }
          var node = this;
          var clients = {};
  
          var callback = function(client) {
              //client.setMaxListeners(0);
              clients[client.id] = client;
              //get ip of user connected to the _sessionid, check to see if its proxied first
              var sessionip = client.headers['x-real-ip'] || client.headers['x-forwarded-for'] || client.remoteAddress;
              node.status({fill:"green",shape:"dot",text:"connected "+Object.keys(clients).length,_sessionid:client.id});
              client.on('data', function(message) {
                  message = JSON.parse(message);
                  if (message.hasOwnProperty("action")) {
                      if ((node.events.indexOf("connect")!==-1) && (message.action === "connected")) {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if ((node.events.indexOf("bounds")!==-1) && (message.action === "bounds")) {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if ((node.events.indexOf("point")!==-1) && ((message.action === "point")||(message.action === "move")||(message.action === "delete") ))  {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if ((node.events.indexOf("layer")!==-1) && (message.action.indexOf("layer") !== -1) )  {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if ((node.events.indexOf("files")!==-1) && (message.action === "file"))  {
                          message.content =  Buffer.from(message.content.split('base64,')[1], 'base64');
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if ((node.events.indexOf("draw")!==-1) && (message.action === "draw"))  {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                      if (node.events.indexOf("other")!==-1 && "connected,point,delete,move,draw,files,bounds".indexOf(message.action) === -1) {
                          setImmediate(function() {node.send({payload:message, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip})});
                      }
                  }
              });
              client.on('close', function() {
                  delete clients[client.id];
                  node.status({fill:"green",shape:"ring",text:"connected "+Object.keys(clients).length,_sessionid:client.id});
                  if (node.events.indexOf("disconnect")!==-1) {
                      node.send({payload:{action:"disconnect", clients:Object.keys(clients).length}, topic:node.path.substr(1), _sessionid:client.id, _sessionip:sessionip});
                  }
              });
          }
  
          node.on("close", function() {
              for (var c in clients) {
                  if (clients.hasOwnProperty(c)) {
                      clients[c].end();
                  }
              }
              clients = {};
              sockets[this.path].removeListener('connection', callback);
              node.status({});
          });
          sockets[this.path].on('connection', callback);
      }
      RED.nodes.registerType("worldmap in",WorldMapIn);
  
  
      var WorldMapTracks = function(n) {
          RED.nodes.createNode(this,n);
          this.depth = parseInt(Number(n.depth) || 20);
          this.pointsarray = {};
          this.layer = n.layer || "combined"; // separate, single
          this.smooth = n.smooth || false;
          var node = this;
          var bezierSpline = require("@turf/bezier-spline").default;
  
          var doTrack = function(msg) {
              if (msg.hasOwnProperty("payload") && msg.payload.hasOwnProperty("name")) {
                  var newmsg = RED.util.cloneMessage(msg);
                  if (msg.payload.deleted) {
                      if (msg.payload.name.substr(-1) === '_') {
                          var a = node.pointsarray[msg.payload.name.substr(0,msg.payload.name.length-1)].pop();
                          node.pointsarray[msg.payload.name.substr(0,msg.payload.name.length-1)] = [ a ];
                          node.send(newmsg);
                      }
                      else {
                          delete node.pointsarray[msg.payload.name];
                      }
                      //newmsg.payload.name = msg.payload.name + "_";
                      node.send(newmsg);
                      return;
                  }
                  if (!msg.payload.hasOwnProperty("lat") || !msg.payload.hasOwnProperty("lon")) { return; }
                  if (!node.pointsarray.hasOwnProperty(msg.payload.name)) {
                      node.pointsarray[msg.payload.name] = [];
                  }
                  if (msg.payload.hasOwnProperty("trackpoints") && !isNaN(parseInt(msg.payload.trackpoints)) ) {
                      var tl = parseInt(msg.payload.trackpoints);
                      if (tl < 0) { tl = 0; }
                      if (node.pointsarray[msg.payload.name].length > tl) {
                          node.pointsarray[msg.payload.name] = node.pointsarray[msg.payload.name].slice(-tl);
                      }
                      node.depth = tl;
                  }
                  if (node.depth < 2) { return; } // if set less than 2 then don't bother.
  
                  var still = false;
                  if (node.pointsarray[msg.payload.name].length > 0) {
                      var oldlat = node.pointsarray[msg.payload.name][node.pointsarray[msg.payload.name].length-1].lat;
                      var oldlon = node.pointsarray[msg.payload.name][node.pointsarray[msg.payload.name].length-1].lon;
                      if (msg.payload.lat === oldlat && msg.payload.lon === oldlon) { still = true; }
                  }
                  if (!still) { node.pointsarray[msg.payload.name].push(msg.payload);
                      if (node.pointsarray[msg.payload.name].length > node.depth) {
                          node.pointsarray[msg.payload.name].shift();
                      }
                  }
                  var line = [];
                  for (var i=0; i<node.pointsarray[msg.payload.name].length; i++) {
                      var m = node.pointsarray[msg.payload.name][i];
                      if (m.hasOwnProperty("lat") && m.hasOwnProperty("lon")) {
                          line.push( [m.lat*1, m.lon*1] );
                          delete newmsg.payload.lat;
                          delete newmsg.payload.lon;
                      }
                      if (m.hasOwnProperty("latitude") && m.hasOwnProperty("longitude")) {
                          line.push( [m.latitude*1, m.longitude*1] );
                          delete newmsg.payload.latitude;
                          delete newmsg.payload.longitude;
                      }
                      if (m.hasOwnProperty("position") && m.position.hasOwnProperty("lat") && m.position.hasOwnProperty("lon")) {
                          line.push( [m.position.lat*1, m.position.lon*1] );
                          delete newmsg.payload.position;
                      }
                  }
                  if (line.length > 1) { // only send track if two points or more
                      if (node.smooth) {
                          var curved = bezierSpline({"type":"Feature", "properties":{}, "geometry":{"type":"LineString", "coordinates":line }});
                          newmsg.payload.line = curved.geometry.coordinates;
                      }
                      else {
                          newmsg.payload.line = line;
                      }
                      newmsg.payload.name = msg.payload.name + "_";
                      if (node.layer === "separate") {
                          newmsg.payload.layer = msg.payload.layer + " tracks";
                          if (newmsg.payload.layer.indexOf('_') === 0) {
                              newmsg.payload.layer = newmsg.payload.layer.substr(1);
                          }
                      }
                      if (node.layer === "single") {
                          newmsg.payload.layer = "Tracks";
                      }
                      node.send(newmsg);  // send the track
                  }
              }
              if (msg.hasOwnProperty("payload") && msg.payload.hasOwnProperty("command") && msg.payload.command.hasOwnProperty("clear")) {
                  for (var p in node.pointsarray) {
                      if (node.pointsarray.hasOwnProperty(p)) {
                          if (node.pointsarray[p][0].layer === msg.payload.command.clear) {
                              delete node.pointsarray[p];
                          }
                      }
                  }
              }
          }
  
          node.on("input", function(m) {
              if (Array.isArray(m.payload)) {
                  m.payload.forEach(function (pay) {
                      var n = RED.util.cloneMessage(m)
                      n.payload = pay;
                      doTrack(n);
                  });
              }
              else {
                  doTrack(m);
              }
          });
  
          node.on("close", function() {
              node.pointsarray = {};
          });
      }
      RED.nodes.registerType("worldmap-tracks",WorldMapTracks);
  
  
      var WorldMapHull = function(n) {
          RED.nodes.createNode(this,n);
          this.prop = n.prop || "layer";
          var node = this;
          node.oldlayercount = {};
          node.hulls = {};
  
          var convexHull = function(points) {
              var arr = [];
              for (const val of Object.values(points)) {
                  arr.push(val);
              }
  
              arr.sort(function (a, b) {
                  return a.lat != b.lat ? a.lat - b.lat : a.lon - b.lon;
              });
  
              var n = arr.length;
              var hull = [];
  
              for (var i = 0; i < 2 * n; i++) {
                  var j = i < n ? i : 2 * n - 1 - i;
                  while (hull.length >= 2 && removeMiddle(hull[hull.length - 2], hull[hull.length - 1], arr[j]))
                      hull.pop();
                  hull.push(arr[j]);
              }
  
              hull.pop();
              return hull;
          }
  
          var removeMiddle = function(a, b, c) {
              var cross = (a.lat- b.lat) * (c.lon - b.lon) - (a.lon - b.lon) * (c.lat- b.lat);
              var dot = (a.lat- b.lat) * (c.lat- b.lat) + (a.lon - b.lon) * (c.lon - b.lon);
              return cross < 0 || cross == 0 && dot <= 0;
          }
  
          var doHull = function(msg) {
              if (msg.hasOwnProperty("payload") && msg.payload.hasOwnProperty("name")) {
                  var newmsg = RED.util.cloneMessage(msg);
                  newmsg.payload = {};
                  newmsg.payload[node.prop] = msg.payload[node.prop] || "unknown";
                  if (msg.payload.deleted === true) {
                      if (node.hulls.hasOwnProperty(newmsg.payload[node.prop])) {
                          delete node.hulls[newmsg.payload[node.prop]][msg.payload.name];
                      }
                  }
                  else {
                      if (!msg.payload.hasOwnProperty("lat") || !msg.payload.hasOwnProperty("lon")) { return; }
                      if (!node.hulls.hasOwnProperty(newmsg.payload[node.prop])) {
                          node.hulls[newmsg.payload[node.prop]] = {};
                      }
                      node.hulls[newmsg.payload[node.prop]][msg.payload.name] = {lat:msg.payload.lat,lon:msg.payload.lon};
                  }
                  var convexHullPoints = convexHull(node.hulls[newmsg.payload[node.prop]]);
                  var leafletHull = convexHullPoints.map(function (element) {return ([element.lat,element.lon])})
  
                  newmsg.payload.name = newmsg.payload[node.prop];
                  newmsg.payload.clickable = true;
  
                  if (msg.payload.fillColor) {
                      newmsg.payload.color = msg.payload.fillColor;
                      newmsg.payload.fillColor = msg.payload.fillColor;
                  }
  
                  if (node.oldlayercount[newmsg.payload[node.prop]] === undefined) {
                      node.oldlayercount[newmsg.payload[node.prop]] = 0;
                  }
                  var oldl = node.oldlayercount[newmsg.payload[node.prop]];
  
                  if (leafletHull.length === 1 && oldl === 2) {
                      newmsg.payload.deleted = true;
                      node.send(newmsg);
                  }
                  if (leafletHull.length === 2 && (oldl === 1 || oldl === 3)) {
                      newmsg.payload.deleted = true;
                      node.send(newmsg);
                      delete newmsg.payload.deleted;
                      newmsg.payload.line = leafletHull;
                      node.send(newmsg);
                  }
                  if (leafletHull.length === 3 && oldl === 2) {
                      newmsg.payload.deleted = true;
                      node.send(newmsg);
                      delete newmsg.payload.deleted;
                  }
                  if (leafletHull.length >= 3) {
                      newmsg.payload.area = leafletHull;
                      node.send(newmsg);
                  }
  
                  node.oldlayercount[newmsg.payload[node.prop]] = leafletHull.length;
              }
          }
  
          node.on("input", function(m) {
              if (Array.isArray(m.payload)) {
                  m.payload.forEach(function (pay) {
                      var n = RED.util.cloneMessage(m)
                      n.payload = pay;
                      doHull(n);
                  });
              }
              else {
                  doHull(m);
              }
          });
  
          node.on("close", function() {
              node.hulls = {};
          });
      }
      RED.nodes.registerType("worldmap-hull",WorldMapHull);
  
      RED.httpNode.get("/-ui-worldmap", function(req, res) {
          res.send(ui ? "true": "false");
      });
  }
  