// public/js/map/activities/activitySource.js
// ===================================
// ACTIVITY SOURCE
// ===================================

(() => {
  "use strict";

  const SOURCE_ID = "activities";

  // ===================================
  // CREA SOURCE
  // ===================================

  function createActivitySource(map, features = []) {
    if (!map) {
      return null;
    }

    const data = {
      type: "FeatureCollection",
      features,
    };

    const existingSource = map.getSource(SOURCE_ID);

    if (existingSource) {
      existingSource.setData(data);
      return existingSource;
    }

    map.addSource(SOURCE_ID, {
      type: "geojson",
      data,

      cluster: true,
      clusterRadius: 80,
    });

    return map.getSource(SOURCE_ID);
  }

  // ===================================
  // AGGIORNA SOURCE
  // ===================================

  function updateActivitySource(map, features = []) {
    if (!map) {
      return;
    }

    if (!map.isStyleLoaded()) {
      return;
    }

    const data = {
      type: "FeatureCollection",
      features,
    };

    const source = map.getSource(SOURCE_ID);

    if (source) {
      source.setData(data);
      return;
    }

    createActivitySource(map, features);
  }

  // ===================================
  // GET SOURCE
  // ===================================

  function getActivitySource(map) {
    if (!map) {
      return null;
    }

    return map.getSource(SOURCE_ID) || null;
  }

  // ===================================
  // GET FEATURES
  // ===================================

  function getActivitySourceFeatures(map) {
    const source = getActivitySource(map);

    if (!source) {
      return [];
    }

    return source._data?.features || [];
  }

  // ===================================
  // GET CLUSTER
  // ===================================

  function getActivitySourceClusters(map) {
    if (!map) {
      return [];
    }

    if (!map.getSource(SOURCE_ID)) {
      return [];
    }

    return map.querySourceFeatures(SOURCE_ID, {
      filter: ["has", "point_count"],
    });
  }

  // ===================================
  // GET PUNTI
  // ===================================

  function getActivitySourcePoints(map) {
    if (!map) {
      return [];
    }

    if (!map.getSource(SOURCE_ID)) {
      return [];
    }

    return map.querySourceFeatures(SOURCE_ID, {
      filter: ["!", ["has", "point_count"]],
    });
  }

  // ===================================
  // API PUBBLICA
  // ===================================

  window.ActivitySource = {
    create: createActivitySource,
    update: updateActivitySource,
    get: getActivitySource,
    getFeatures: getActivitySourceFeatures,
    getClusters: getActivitySourceClusters,
    getPoints: getActivitySourcePoints,
  };
})();