const propertiesArray = [{id:"2-ARM12703",pos:{lat:54.3964777934403,lng:-6.77819030978699}},{id:"2-ARM15969",pos:{lat:54.4016086251183,lng:-6.78129054365539}},{id:"61-PLIK0A23",pos:{lat:54.3468366,lng:-6.651011}},{id:"61-PLIK0A283",pos:{lat:54.3412978,lng:-6.5449047}},{id:"2-ARM16496",pos:{lat:54.4763077,lng:-6.6445774}},{id:"107-11138536",pos:{lat:54.22771,lng:-6.491979}},{id:"118-136270",pos:{lat:54.3579339,lng:-6.664094}},{id:"136-NEW230441",pos:{lat:54.273483,lng:-6.458391}},{id:"138-TH81376",pos:{lat:54.3950477390776,lng:-6.65550883911743}},{id:"118-151883",pos:{lat:54.3601461,lng:-6.6639699}},{id:"61-PLIK0A36",pos:{lat:54.3478109,lng:-6.6530232}},{id:"62-12594662",pos:{lat:54.3493,lng:-6.65418}},{id:"2-ARM17363",pos:{lat:54.3528358205685,lng:-6.65415314921264}},{id:"157-942413",pos:{lat:54.345997062393,lng:-6.669329601265}},{id:"157-996921",pos:{lat:54.354312246214,lng:-6.6688326673293}},{id:"62-12665077",pos:{lat:54.296798,lng:-6.511519}},{id:"157-1010237",pos:{lat:54.351004687046,lng:-6.670535695121}},{id:"157-1014460",pos:{lat:54.319842004313,lng:-6.5292097074097}},{id:"2-ARM17751",pos:{lat:54.2773859,lng:-6.5118729}},{id:"2-COM17927",pos:{lat:54.3490968172076,lng:-6.65281201349182}},{id:"62-12719316",pos:{lat:54.361099,lng:-6.628499}},{id:"2-COM18141",pos:{lat:54.3505458912318,lng:-6.6527371020912}},{id:"62-12743614",pos:{lat:54.359367,lng:-6.641594}},{id:"61-PLIK0A482",pos:{lat:54.2937540162107,lng:-6.84463574686946}},{id:"136-NEW250307",pos:{lat:54.35394,lng:-6.654831}},{id:"2-ARM18288",pos:{lat:54.3540783,lng:-6.6645655}},{id:"2-ARM18333",pos:{lat:54.3395441683801,lng:-6.6353475196434}},{id:"136-NEW250324",pos:{lat:54.359521,lng:-6.634599}},{id:"157-1035428",pos:{lat:54.34021358054,lng:-6.6692790513457}},{id:"62-18796550",pos:{lat:54.359134,lng:-6.640161}},{id:"157-1037446",pos:{lat:54.349406721409,lng:-6.6573404264881}},{id:"2-ARM18373",pos:{lat:54.3480837018545,lng:-6.67100651534424}},{id:"32-PQ6860",pos:{lat:54.3450369,lng:-6.6656019}},{id:"61-PLIK0A493",pos:{lat:54.3581043445514,lng:-6.62913656787014}},{id:"61-PLIK0A495",pos:{lat:54.2963854530508,lng:-6.51637191276956}},{id:"61-PLIK0A497",pos:{lat:54.3313745912198,lng:-6.6846780584673}},{id:"61-PLIK0A499",pos:{lat:54.3377536,lng:-6.6378662}},{id:"2-ARM18167",pos:{lat:54.3314474,lng:-6.6406284}},{id:"2-ARM18166",pos:{lat:54.3323487,lng:-6.6393349}},{id:"2-ARM18168",pos:{lat:54.332349,lng:-6.6393254}},{id:"2-ARM18169",pos:{lat:54.3314716,lng:-6.6405854}},{id:"2-ARM18730",pos:{lat:54.349735,lng:-6.6526876}},];

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);
}