Center map on startup location

wwwroot/js/lme-map.js

@@ -19,6 +19,9 @@ const lmeState = {
     measurementRefreshTimer: null,
     gpsMarker: null,
     gpsAccuracy: null,
+    gpsPositionVisible: true,
+    hasLiveGpsFix: false,
+    lastAccuracy: 0,
     gpsTrail: null,
     selectedParcelsLayer: null,
     gpsParcelLayer: null,
@@ -40,6 +43,7 @@ const cadastreCrs = L.extend({}, L.CRS.EPSG4326, { code: "EPSG:4258" });
 window.lmeMap = {
     init,
     showSearchResult,
+    showInitialPosition,
     displayOfficialParcel,
     exportCadastreView,
     closeCadastrePreview,
@@ -69,6 +73,7 @@ window.lmeMap = {
     centerOnGps,
     toggleTrail,
     setNativeGpsPosition,
+    setGpsPositionVisible,
     setGpsError,
     resize,
     showInfo: setInfo
@@ -178,6 +183,23 @@ function showSearchResult(latitude, longitude, label) {
     setInfo(label || `${lat.toFixed(6)}, ${lon.toFixed(6)}`);
 }
 
+function showInitialPosition(location) {
+    const latitude = Number(location?.latitude);
+    const longitude = Number(location?.longitude);
+    const accuracy = Math.max(0, Number(location?.accuracy) || 0);
+    if (!Number.isFinite(latitude) || !Number.isFinite(longitude)) {
+        return;
+    }
+
+    const latlng = [latitude, longitude];
+    lmeState.lastPosition = latlng;
+    lmeState.lastAccuracy = accuracy;
+    lmeState.map.setView(latlng, accuracy > 80 ? 17 : 19);
+    setText("gpsState", "Posizione iniziale acquisita - GPS non attivo");
+    setInfo("Mappa centrata sulla posizione attuale. GPS continuo non attivo.");
+    updateGpsInsideState();
+}
+
 function displayOfficialParcel(xmlText, latitude, longitude, parcel, label, shouldFit) {
     const lat = Number(latitude);
     const lon = Number(longitude);
@@ -1705,6 +1727,25 @@ function setNativeGpsPosition(location) {
     });
 }
 
+function setGpsPositionVisible(enabled) {
+    lmeState.gpsPositionVisible = Boolean(enabled);
+    if (!lmeState.gpsPositionVisible) {
+        if (lmeState.gpsMarker && lmeState.map.hasLayer(lmeState.gpsMarker)) {
+            lmeState.map.removeLayer(lmeState.gpsMarker);
+        }
+        if (lmeState.gpsAccuracy && lmeState.map.hasLayer(lmeState.gpsAccuracy)) {
+            lmeState.map.removeLayer(lmeState.gpsAccuracy);
+        }
+        setInfo("Punto e cerchio GPS nascosti. Il rilevamento continua.");
+        return;
+    }
+
+    if (lmeState.hasLiveGpsFix && lmeState.lastPosition) {
+        updateGpsPositionLayers(lmeState.lastPosition, lmeState.lastAccuracy);
+    }
+    setInfo("Punto e cerchio GPS visibili.");
+}
+
 function setGpsError(error) {
     setText("gpsState", "GPS non disponibile");
     setInfo(error || "Errore GPS.");
@@ -1729,14 +1770,12 @@ function onGpsPosition(position) {
     const { latitude, longitude, accuracy } = position.coords;
     const latlng = [latitude, longitude];
     lmeState.lastPosition = latlng;
-
-    if (!lmeState.gpsMarker) {
-        lmeState.gpsMarker = L.marker(latlng, { title: "La tua posizione" }).addTo(lmeState.map);
-        lmeState.gpsAccuracy = L.circle(latlng, { radius: accuracy, color: "#2563eb", weight: 2, fillColor: "#60a5fa", fillOpacity: 0.16 }).addTo(lmeState.map);
+    lmeState.lastAccuracy = Math.max(0, Number(accuracy) || 0);
+    const firstLiveFix = !lmeState.hasLiveGpsFix;
+    lmeState.hasLiveGpsFix = true;
+    updateGpsPositionLayers(latlng, lmeState.lastAccuracy);
+    if (firstLiveFix) {
         lmeState.map.setView(latlng, 19);
-    } else {
-        lmeState.gpsMarker.setLatLng(latlng);
-        lmeState.gpsAccuracy.setLatLng(latlng).setRadius(accuracy);
     }
 
     if (lmeState.gpsTrailEnabled) {
@@ -1744,10 +1783,35 @@ function onGpsPosition(position) {
         lmeState.gpsTrail.setLatLngs(lmeState.gpsTrailPoints);
     }
 
-    setText("gpsState", `${latitude.toFixed(6)}, ${longitude.toFixed(6)} - precisione ${Math.round(accuracy)} m`);
+    setText("gpsState", `${latitude.toFixed(6)}, ${longitude.toFixed(6)} - precisione ${Math.round(lmeState.lastAccuracy)} m`);
     updateGpsInsideState();
 }
 
+function updateGpsPositionLayers(latlng, accuracy) {
+    if (!lmeState.gpsPositionVisible) {
+        return;
+    }
+    if (!lmeState.gpsMarker) {
+        lmeState.gpsMarker = L.marker(latlng, { title: "La tua posizione" });
+        lmeState.gpsAccuracy = L.circle(latlng, {
+            radius: accuracy,
+            color: "#2563eb",
+            weight: 2,
+            fillColor: "#60a5fa",
+            fillOpacity: 0.16
+        });
+    } else {
+        lmeState.gpsMarker.setLatLng(latlng);
+        lmeState.gpsAccuracy.setLatLng(latlng).setRadius(accuracy);
+    }
+    if (!lmeState.map.hasLayer(lmeState.gpsMarker)) {
+        lmeState.gpsMarker.addTo(lmeState.map);
+    }
+    if (!lmeState.map.hasLayer(lmeState.gpsAccuracy)) {
+        lmeState.gpsAccuracy.addTo(lmeState.map);
+    }
+}
+
 function onGpsError(error) {
     setText("gpsState", "GPS non autorizzato o non disponibile");
     setInfo(error.message || "Errore GPS.");