// public/js/map/layerManager.js
// ===============================
// GESTIONE GENERICA LAYER MARKER
// ===============================

(function () {

  "use strict";


  function sync(markerLayer, visibleMap, markers) {

    const nextVisible = new Map();


    for (const marker of markers) {

      const id = marker.__item?.id;

      if (!id) {
        continue;
      }


      nextVisible.set(id, marker);


      if (!visibleMap.has(id)) {

        markerLayer.addLayer(marker);

      }

    }



    for (const [id, marker] of visibleMap) {

      if (!nextVisible.has(id)) {

        markerLayer.removeLayer(marker);

      }

    }


    return nextVisible;

  }



  window.MapLayerManager = {

    sync

  };


})();