const propertiesArray = [{id:"12-bcv523395",pos:{lat:55.188402744645,lng:-6.7109123015747}},{id:"38-ppr104562",pos:{lat:55.175409558891,lng:-6.7157576792374}},{id:"38-ppr108082",pos:{lat:55.1855695,lng:-6.6986791}},{id:"38-ppr213886",pos:{lat:55.175470827573,lng:-6.7155431025162}},{id:"38-ppr560905",pos:{lat:55.175409558891,lng:-6.7157576792374}},{id:"11-MPY671089",pos:{lat:55.1850889731793,lng:-6.71900893617629}},{id:"38-ppr794820",pos:{lat:55.1718142,lng:-6.7116512}},{id:"38-ppr793135",pos:{lat:55.18318491646,lng:-6.7183086112228}},{id:"38-ppr793145",pos:{lat:55.18318491646,lng:-6.7183086112228}},{id:"38-ppr793149",pos:{lat:55.18318491646,lng:-6.7183086112228}},{id:"12-bcv801580",pos:{lat:55.188402744645,lng:-6.7109123015747}},{id:"129-1000_RS0004",pos:{lat:55.185383,lng:-6.70522}},{id:"3-LBR251180",pos:{lat:55.187734,lng:-6.712761}},{id:"3-LBR251178",pos:{lat:55.187734,lng:-6.712761}},{id:"12-bcv834368",pos:{lat:55.188402744645,lng:-6.7109123015747}},{id:"12-bcv834529",pos:{lat:55.188402744645,lng:-6.7109123015747}},{id:"140-18433732",pos:{lat:55.185199,lng:-6.719189}},{id:"140-18446834",pos:{lat:55.184902,lng:-6.719067}},{id:"18-CNRCJBE2926",pos:{lat:55.2085235,lng:-6.6594794}},{id:"38-ppr851067",pos:{lat:55.18735457609,lng:-6.7195483809509}},{id:"38-ppr852528",pos:{lat:55.1744458,lng:-6.7203637}},{id:"38-ppr860123",pos:{lat:55.1719512,lng:-6.7099077}},{id:"12-bcv858895",pos:{lat:55.1877063,lng:-6.7067149}},{id:"38-ppr516366",pos:{lat:55.174261960049,lng:-6.7171131668648}},{id:"140-18540196",pos:{lat:55.186637,lng:-6.719227}},{id:"140-18540197",pos:{lat:55.185226,lng:-6.7192}},{id:"140-18540199",pos:{lat:55.185218,lng:-6.719196}},{id:"12-bcv884003",pos:{lat:55.1872403,lng:-6.7120215}},{id:"18-CNRCJBE2990",pos:{lat:55.2088706602705,lng:-6.65623092228661}},{id:"18-CNRCJBE2991",pos:{lat:55.2088706602705,lng:-6.65623092228661}},{id:"18-CNRCJBE2992",pos:{lat:55.2088706602705,lng:-6.65623092228661}},{id:"18-CNRCJBE2993",pos:{lat:55.2088706602705,lng:-6.65623092228661}},{id:"18-CNRCJBE2994",pos:{lat:55.2088706602705,lng:-6.65623092228661}},{id:"10-873126",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-873135",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-873138",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-873139",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-873142",pos:{lat:55.186481215101,lng:-6.7194090834181}},{id:"10-873379",pos:{lat:55.187748920801,lng:-6.7197685366458}},{id:"10-873835",pos:{lat:55.173992659926,lng:-6.7221355338359}},{id:"10-873838",pos:{lat:55.173992659926,lng:-6.7221355338359}},{id:"10-873904",pos:{lat:55.186138306579,lng:-6.7192487879893}},{id:"10-873909",pos:{lat:55.184480454153,lng:-6.718244415182}},{id:"10-873960",pos:{lat:55.168989988942,lng:-6.7058004008298}},{id:"10-873974",pos:{lat:55.186483265466,lng:-6.7178999200725}},{id:"10-874020",pos:{lat:55.188720525952,lng:-6.7184428404835}},{id:"10-874028",pos:{lat:55.175266374082,lng:-6.71565831802}},{id:"10-874029",pos:{lat:55.175218316469,lng:-6.7153522489773}},{id:"10-874030",pos:{lat:55.175178261865,lng:-6.7153625319658}},{id:"10-874061",pos:{lat:55.177210726355,lng:-6.7110963777684}},{id:"10-874077",pos:{lat:55.1765795,lng:-6.7206846}},{id:"10-874080",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-874082",pos:{lat:55.174205172514,lng:-6.7221608532961}},{id:"10-874102",pos:{lat:55.175698285569,lng:-6.7198122187598}},{id:"10-874103",pos:{lat:55.1862668,lng:-6.7155307}},{id:"10-874121",pos:{lat:55.186552692095,lng:-6.7192857710257}},{id:"10-874129",pos:{lat:55.1851999,lng:-6.719189}},{id:"10-874139",pos:{lat:55.176575954013,lng:-6.7206746737724}},{id:"10-874140",pos:{lat:55.174347,lng:-6.704276}},{id:"10-874145",pos:{lat:55.174790003242,lng:-6.7077494368689}},{id:"10-874163",pos:{lat:55.1851999,lng:-6.719189}},{id:"10-874164",pos:{lat:55.186138306579,lng:-6.7192487879893}},{id:"10-874165",pos:{lat:55.186401587801,lng:-6.7194841852705}},{id:"10-874174",pos:{lat:55.17651252225,lng:-6.7058751240761}},{id:"10-886310",pos:{lat:55.179858719276,lng:-6.6987096760473}},{id:"11-880333",pos:{lat:55.178582028991,lng:-6.710925555208}},{id:"11-888757",pos:{lat:55.184052609784,lng:-6.7110938976748}},{id:"11-890267",pos:{lat:55.1824602,lng:-6.7211655}},{id:"10-890821",pos:{lat:55.1854644,lng:-6.7174481}},{id:"12-bcv890363",pos:{lat:55.1862849,lng:-6.7144175}},];

let map; 
let markersArray = [];
let markersArrayAll = [];
let markersArrayChanged = [];
let clusterMarkersArray = [];
const infoWindow = document.querySelector(".info-window-control");
async function initMap() {  
  
  const { Map, InfoWindow } = await google.maps.importLibrary("maps","geometry");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");

  let sw = new google.maps.LatLng(54.019510, -8.349163);
  let ne = new google.maps.LatLng(55.343439, -5.438346);
  let bounds = new google.maps.LatLngBounds(sw, ne);

  // Map Options
  let mapOptions = {
    zoom: 14,
		mapTypeId: google.maps.MapTypeId.ROADMAP,
    mapId: "1c886fcb938b1123",
    disableDefaultUI: false,
    streetViewControl: true,
    streetViewControlOptions: {
      position: google.maps.ControlPosition.RIGHT_TOP,
    },
  };
  map = new Map(document.getElementById("area_map"), mapOptions);
  var _markerCluster = new markerClusterer.MarkerClusterer({map,algorithmOptions: { radius: 80}});
  
  buildMakers(propertiesArray, AdvancedMarkerElement, bounds, InfoWindow);
  setMapBounds(map, markersArray);
  setMapMarkers( _markerCluster, markersArray, "add");

  let ClusterChanged = "N";

  google.maps.event.addListener(map, "idle", () => {
    
      markersArray.length = 0;
      markersArrayChanged.length = 0;
  
      markersArrayAll.map((property, i) => {
        let position = { lat:property.position.lat, lng: property.position.lng };
        if(map.getBounds().contains(position)){
          markersArray.push(property);
        } else { 
          markersArrayChanged.push(property);
        }
      });
      if(markersArrayChanged.length != 0 ){
        ClusterChanged = "Y";
        setMapMarkers( _markerCluster, markersArrayChanged, "remove");
        setMapMarkers( _markerCluster, markersArray, "add");
      }
      if(markersArrayChanged.length == 0 && ClusterChanged == "Y"){
        ClusterChanged = "N";
        setMapMarkers( _markerCluster, markersArrayAll, "add");
      }
  });
  

  google.maps.event.addListener(_markerCluster, 'click', function(cluster) {
    clusterMarkersArray = []
    var markers = cluster.markers;

    for (let i in markers) {

      let position = { lat:markers[i].position.lat, lng: markers[i].position.lng };
      var clusterMarkers = clusterMarkersArray;

      for (i = 0; i < clusterMarkers.length; i++) {

        var p1 = new google.maps.LatLng(clusterMarkers[i].lat, clusterMarkers[i].lng),
        p2 = new google.maps.LatLng(position.lat, position.lng);
      
        if(p1.equals(p2)){
          var quot = 360.0 / clusterMarkersArray.length;
          var newLat = position.lat + -.00012 * Math.cos(+quot * i); //+ -.00008 * Math.cos((+quot * i) / 180 * Math.PI);  //x 
          var newLng = position.lng + -.00012 * Math.sin(+quot * i);  //+ -.0008 * Math.sin((+quot * i) / 180 * Math.PI);  //Y
          markers[i].position = {lat:newLat,lng:newLng};

        }
      }
      clusterMarkersArray.push(position);
    }
  });
}

function buildMakers(properties, AdvancedMarkerElement, bounds, InfoWindow){
  const infoWindow = new InfoWindow();
  properties.map((property, i) => {
    let position = {lat:property.pos.lat,lng:property.pos.lng};
    // check if maker is withing NI Bounds
    if(bounds.contains(position)){
      const icon = document.createElement("img");
      icon.src = "/images/pin32x.png";
      const marker = new AdvancedMarkerElement({
        map,
        position: position,
        content: icon,
        gmpClickable: true,
      });
      // Add a click listener for each marker, and set up the info window.
      marker.addListener("click", () => {
        infoWindow.close();
        markerClick(marker, property.id, infoWindow);
      });
      // check if maker is withing NI Bounds
      if(bounds.contains(position)){
        markersArray.push(marker);
        markersArrayAll.push(marker);
      } 
    }
  });  
  //console.timeEnd('build markers');
  $("#map-loading").addClass('hide');
}

function markerClick(marker, id, infoWindow){
  const request = new Request("/_search-includes/marker-info?id="+id)
  fetch(request)
  .then((response) => {
    if (response.status === 200) {
      return response.json();
    } else {
      throw new Error("Something went wrong on API server!");
    }
  })
  .then((response) => {
    const infoWindowContent = buildContent(response);
    infoWindow.setContent(infoWindowContent);
    infoWindow.open(marker.map, marker);
  })
  .catch((error) => {
    console.error(error);
  });
}

function buildContent(property){
content = `
  <div class="map-property-card">
    <a href="${property.url}" class="map-property-card--container">
      <div class="map-property-card--image">
        <img class="prop-image" loading="lazy" src="${property.img}" alt="${property.add1}, ${property.add2}" title="${property.add1}, ${property.add2}" onerror="this.onerror=null;this.src='/images/unavailable.svg';" width="" height="">
        <div class="prop-agent">
          <div class="agent-img">
            <img loading="lazy" src="${property.agent.logo}" alt="${property.agent.name}" title="${property.agent.name}" width="40" height="40">
          </div>
          <div class="agent-img agent-img-2 ${property.agent2.logo == '' ? 'u-hidden':''}">
            <img loading="lazy" src="${property.agent2.logo}" alt="${property.agent2.name}" title="${property.agent2.name}" width="40" height="40">
          </div>
        </div>
        <div class="prop-sale-status ${property.statust == "Sold" ? 'sale-sold':''} ${property.statust == "" ? 'u-hidden':''}">${property.statust}</div>
        <div class="ribbon-top left ${property.newdev != 1 ? 'u-hidden':''}" style="--d:10px;--w:150px;">New Home</div>
      </div>  
      <div class="map-property-card--info"> 
        <div class="map-property-card--top-dets"> 
          <span class="map-property-card--price">
            <span class="status">${property.pricet}</span>
            <span class="amount">${property.poa != 1 
            ? `&pound;${property.price}${
                property.sector === "RR" &&
                !["Weekly", "Per Week", "Weekly Rental Of"].includes(property.pricet)
                  ? 'pm' 
                  : ''
              }` 
            : property.price
          }</span> 
          </span>
          <ul class="map-property-card--icons">
            <li class="${property.beds > 0 ? '':'u-hidden'}" title="${property.beds} Bedroom${property.beds > 1 ? "s":""}"><span><i class="icon-bedroom"></i></span>${property.beds}</li>
            <li class="${property.reps > 0 ? '':'u-hidden'}" title="${property.reps} Reception${property.reps > 1 ? "s":""}"><span><i class="icon-reception"></i></span>${property.reps}</li>
            <li class="${property.baths > 0 ? '':'u-hidden'}" title="${property.baths} Bathroom${property.baths > 1 ? "s":""}"><span><i class="icon-bathroom"></i></span>${property.baths}</li>
          </ul>
        </div> 
        <div class="map-property-card--main-dets">
          <span class="prop-headline">${property.hline}</span>
          <h2 class="prop-address"><strong>${property.add1}</strong></h2>
          <span class="prop-address-2">${property.add2}</span>
        </div>
      </div>
    </a>
  </div>
  `;
return content;  
}

function setMapMarkers(_markerCluster, _MarkersArray, Action){
  var mc = _markerCluster;
  var ma = _MarkersArray;
  if(Action == "add"){
    mc.addMarkers(ma);
  }
  if(Action == "remove"){
    mc.removeMarkers(ma);
  }
  if(Action == "clear"){
    mc.clearMarkers();
  }
}

function setMapBounds(map, markers){
  var boundsmarkers = new google.maps.LatLngBounds();
    for (var i = 0; i < markers.length; i++) {
      let position = { lat: markers[i].position.lat, lng: markers[i].position.lng };
      boundsmarkers.extend(position);
  }
  map.fitBounds(boundsmarkers);
}