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

(() => {
  "use strict";

  const SOURCE_ID = "activities";
  const CLUSTER_RADIUS = 80;

  // ===============================
  // CREATE SOURCE
  // ===============================

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

    if (!map.isStyleLoaded()) {
      console.log(
        "[ActivitySource] create rimandato: style non pronto",
      );

      return null;
    }

    const existingSource =
      map.getSource(SOURCE_ID);

    if (existingSource) {
      existingSource.setData({
        type: "FeatureCollection",
        features,
      });

      return existingSource;
    }

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

    console.log(
      "[ActivitySource] creo source activities",
      {
        features: features.length,
      },
    );

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

      cluster: true,
      clusterRadius: CLUSTER_RADIUS,
    });

    console.log(
      "[ActivitySource] source activities creata",
      {
        source:
          !!map.getSource(SOURCE_ID),
      },
    );

    return map.getSource(SOURCE_ID);
  }

  // ===============================
  // UPDATE SOURCE
  // ===============================

  function updateActivitySource(
    map,
    features = [],
  ) {
    if (!map) {
      return null;
    }
    
console.log(
"[ActivitySource.update]",
{
features: features.length,
styleLoaded: map.isStyleLoaded(),
sourceExists: !!map.getSource("activities"),
}
)

    if (!map.isStyleLoaded()) {
      console.log(
        "[ActivitySource] update rimandato: style non pronto",
      );

      return null;
    }

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

    const source =
      map.getSource(SOURCE_ID);

    // --------------------------------
    // SOURCE ESISTENTE
    // --------------------------------

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

      console.log(
        "[ActivitySource] source aggiornata",
        {
          features: features.length,
        },
      );

      return source;
    }

    // --------------------------------
    // SOURCE NON ESISTENTE
    // --------------------------------

    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 CLUSTERS
  // ===============================

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

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

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

  // ===============================
  // GET POINTS
  // ===============================

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

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

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

  // ===============================
  // PUBLIC API
  // ===============================

  window.ActivitySource = {
    create:
      createActivitySource,

    update:
      updateActivitySource,

    get:
      getActivitySource,

    getFeatures:
      getActivitySourceFeatures,

    getClusters:
      getActivitySourceClusters,

    getPoints:
      getActivitySourcePoints,
  };
})();