Center map on startup location

Components/Pages/Home.razor

@@ -5,6 +5,7 @@
 @inject OfficialCadastreService OfficialCadastreService
 @inject LocationSearchService LocationSearchService
 @inject AzureMapsService AzureMapsService
+@inject ProjectStorageService ProjectStorageService
 @implements IAsyncDisposable
 
 <PageTitle>LME Mappe Catastali</PageTitle>
@@ -71,6 +72,16 @@
             <button class="gps-center" @onclick="CenterOnGps" aria-label="Centra posizione">Centra</button>
         </div>
 
+        @if ((ActiveTab is "map" or "search") && !LayerPanelOpen)
+        {
+            <div class="map-measure-tools @(ActiveTab == "search" ? "search-open" : null)" aria-label="Strumenti rapidi di misura">
+                <span>Misura</span>
+                <button title="Disegna e misura un'area" @onclick='() => StartMeasurementDrawing("area")'>Area</button>
+                <button title="Disegna e misura una distanza" @onclick='() => StartMeasurementDrawing("distance")'>Distanza</button>
+                <button title="Disegna e misura un cerchio" @onclick='() => StartMeasurementDrawing("circle")'>Cerchio</button>
+            </div>
+        }
+
         @if (ActiveTab is not "map" and not "search")
         {
             <aside class="tool-sheet">
@@ -148,88 +159,159 @@
                         </div>
                     </section>
                 }
+                else if (ActiveTab == "data")
+                {
+                    <section class="panel-content">
+                        <section class="panel-section">
+                            <h2>File GIS</h2>
+                            <label class="file-picker">
+                                <span>Carica KML, KMZ o GeoJSON</span>
+                                <input id="gisFileInput" type="file" accept=".kml,.kmz,.geojson,.json,application/vnd.google-earth.kml+xml,application/vnd.google-earth.kmz,application/geo+json" />
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" checked="@IncludeKmlSheetLayer" @onchange="ToggleKmlSheetLayer" />
+                                <span>KML/KMZ: includi anche il layer del foglio</span>
+                            </label>
+                            <small class="field-help">
+                                @(IncludeKmlSheetLayer
+                                    ? "Attivato: importa foglio, particelle e altri elementi KML/KMZ."
+                                    : "Disattivato: importa solo i poligoni delle particelle riconosciute.")
+                            </small>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" checked="@ShowImportedMeasurements" @onchange="ToggleImportedMeasurements" />
+                                <span>Mostra misure dei file caricati</span>
+                            </label>
+                            <div class="button-row">
+                                <button @onclick="FitImportedLayers">Inquadra dati</button>
+                                <button class="secondary-command" @onclick="ClearImportedLayers">Rimuovi dati</button>
+                            </div>
+                        </section>
+
+                        <section class="panel-section">
+                            <h2>Disegni e misure</h2>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" checked="@ShowDrawingMeasurements" @onchange="ToggleDrawingMeasurements" />
+                                <span>Mostra superficie, perimetro e lati</span>
+                            </label>
+                            <button class="secondary-command" aria-pressed="@DrawToolsVisible" @onclick="ToggleDrawTools">
+                                @(DrawToolsVisible ? "Nascondi barra completa" : "Mostra barra completa")
+                            </button>
+                            <button class="danger-command" @onclick="ClearDrawings">Elimina disegni e POI</button>
+                        </section>
+
+                        <section class="panel-section">
+                            <h2>Punti di interesse</h2>
+                            <label>
+                                Nome POI
+                                <input @bind="PoiName" @bind:event="oninput" placeholder="Nome del punto" />
+                            </label>
+                            <button class="primary-command" @onclick="AddProjectMarker">Aggiungi POI al centro mappa</button>
+                        </section>
+                    </section>
+                }
                 else if (ActiveTab == "projects")
                 {
                     <section class="panel-content">
-                        <h2>File GIS</h2>
-                        <label class="file-picker">
-                            <span>Carica KML, KMZ o GeoJSON</span>
-                            <input id="gisFileInput" type="file" accept=".kml,.kmz,.geojson,.json,application/vnd.google-earth.kml+xml,application/vnd.google-earth.kmz,application/geo+json" />
-                        </label>
-                        <div class="button-row">
-                            <button @onclick="FitImportedLayers">Inquadra</button>
-                            <button class="secondary-command" @onclick="ClearImportedLayers">Pulisci</button>
-                        </div>
+                        <section class="panel-section">
+                            <h2>Salva progetto</h2>
+                            <label>
+                                Nome progetto
+                                <input @bind="NewProjectName" @bind:event="oninput" placeholder="Es. Rilievo San Nicola" maxlength="80" />
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" @bind="IncludeCadastralParcels" />
+                                <span>Includi le particelle catastali rosse</span>
+                            </label>
+                            <button class="primary-command" @onclick="SaveProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(NewProjectName))">Salva progetto</button>
+                        </section>
 
-                        <h2>Progetti e POI</h2>
-                        <label>
-                            Nome
-                            <input @bind="ProjectName" @bind:event="oninput" placeholder="Nome progetto o POI" />
-                        </label>
-                        <button class="primary-command" @onclick="AddProjectMarker">Aggiungi POI al centro mappa</button>
-                        <button class="secondary-command" aria-pressed="@DrawToolsVisible" @onclick="ToggleDrawTools">
-                            @(DrawToolsVisible ? "Nascondi strumenti di disegno" : "Mostra strumenti di disegno")
-                        </button>
-                        <div class="button-row">
-                            <button @onclick="SaveWorkspace">Salva</button>
-                            <button @onclick="LoadWorkspace">Carica</button>
-                        </div>
-                        <button class="danger-command" @onclick="ClearDrawings">Elimina disegni e POI</button>
+                        <section class="panel-section">
+                            <h2>Apri progetto</h2>
+                            <label>
+                                Progetto salvato
+                                <select value="@SelectedProjectId" @onchange="SelectProject" disabled="@(Projects.Count == 0 || ProjectBusy)">
+                                    <option value="">Seleziona un progetto</option>
+                                    @foreach (var project in Projects)
+                                    {
+                                        <option value="@project.Id">@project.Name - @project.UpdatedAt.ToLocalTime().ToString("dd/MM/yyyy HH:mm")</option>
+                                    }
+                                </select>
+                            </label>
+                            <div class="button-row">
+                                <button @onclick="LoadProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Apri</button>
+                                <button class="danger-command" @onclick="DeleteProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Elimina</button>
+                            </div>
+                            <div class="project-archive-state">@ProjectArchiveMessage</div>
+                        </section>
                     </section>
                 }
                 else if (ActiveTab == "settings")
                 {
                     <section class="panel-content">
-                        <h2>Visualizzazione</h2>
-                        <label>
-                            Sfondo
-                            <select value="@SelectedBaseLayer" @onchange="ChangeBaseLayer">
-                                <option value="satellite">Satellite - Esri World Imagery</option>
-                                <option value="osm">Strade - OpenStreetMap</option>
-                                <option value="streets-esri">Strade dettagliate - Esri World Street Map</option>
-                                <option value="topographic">Topografica - Esri World Topographic</option>
-                                <option value="terrain">Terreno - OpenTopoMap</option>
-                                <option value="carto">Strade chiare - CARTO Voyager</option>
-                                <option value="azure-road">Strade - Azure Maps</option>
-                                <option value="azure-satellite">Satellite - Azure Maps</option>
-                                <option value="google-satellite">Satellite - Google Maps</option>
-                                <option value="google-roadmap">Strade - Google Maps</option>
-                            </select>
-                        </label>
-                        <label>
-                            Chiave Google Maps Platform
-                            <input type="password" @bind="GoogleMapsApiKey" placeholder="API key" autocomplete="off" />
-                        </label>
-                        <button class="secondary-command" @onclick="SaveGoogleMapsApiKey">Salva chiave Google</button>
-                        <label>
-                            Chiave sottoscrizione Azure Maps Gen2
-                            <input type="password" @bind="AzureMapsSubscriptionKey" placeholder="Subscription key" autocomplete="off" />
-                        </label>
-                        <button class="secondary-command" @onclick="SaveAzureMapsKey">Salva chiave Azure Maps</button>
-                        <div class="service-note">
-                            <strong>Quota gratuita Azure Maps Gen2</strong>
-                            <p>Include ogni mese 5.000 transazioni per le mappe stradali e 1.000 per le immagini satellitari. Ogni transazione comprende fino a 15 tessere.</p>
-                        </div>
-                        <label>
-                            Trasparenza catasto
-                            <input type="range" min="0" max="1" step="0.05" value="0.75" @onchange="ChangeCadastreOpacity" />
-                        </label>
-                        <h2>GPS e percorso</h2>
-                        <label class="toggle-line">
-                            <input type="checkbox" checked="@TrailEnabled" @onchange="ToggleTrail" />
-                            Registra la traccia mentre cammini
-                        </label>
+                        <section class="panel-section">
+                            <h2>Mappa e sfondo</h2>
+                            <label>
+                                Sfondo
+                                <select value="@SelectedBaseLayer" @onchange="ChangeBaseLayer">
+                                    <option value="satellite">Satellite - Esri World Imagery</option>
+                                    <option value="osm">Strade - OpenStreetMap</option>
+                                    <option value="streets-esri">Strade dettagliate - Esri World Street Map</option>
+                                    <option value="topographic">Topografica - Esri World Topographic</option>
+                                    <option value="terrain">Terreno - OpenTopoMap</option>
+                                    <option value="carto">Strade chiare - CARTO Voyager</option>
+                                    <option value="azure-road">Strade - Azure Maps</option>
+                                    <option value="azure-satellite">Satellite - Azure Maps</option>
+                                    <option value="google-satellite">Satellite - Google Maps</option>
+                                    <option value="google-roadmap">Strade - Google Maps</option>
+                                </select>
+                            </label>
+                            <label>
+                                Trasparenza catasto
+                                <input type="range" min="0" max="1" step="0.05" value="0.75" @onchange="ChangeCadastreOpacity" />
+                            </label>
+                        </section>
 
-                        <h2>Servizi Agenzia delle Entrate</h2>
-                        <div class="service-note protected-service">
-                            <strong>Download documenti e fogli ufficiali</strong>
-                            <p>Il CAPTCHA o l'accesso SPID/CIE vengono gestiti direttamente dal sito dell'Agenzia. Per sicurezza l'app non tenta di aggirarli.</p>
-                            <button class="primary-command" @onclick="OpenOfficialGeoportal">Apri Geoportale catastale</button>
-                            <button class="secondary-command" @onclick="OpenOfficialReservedArea">Apri Area riservata per download</button>
-                        </div>
+                        <section class="panel-section">
+                            <h2>Servizi mappa con chiave</h2>
+                            <label>
+                                Chiave Google Maps Platform
+                                <input type="password" @bind="GoogleMapsApiKey" placeholder="API key" autocomplete="off" />
+                            </label>
+                            <button class="secondary-command" @onclick="SaveGoogleMapsApiKey">Salva chiave Google</button>
+                            <label>
+                                Chiave sottoscrizione Azure Maps Gen2
+                                <input type="password" @bind="AzureMapsSubscriptionKey" placeholder="Subscription key" autocomplete="off" />
+                            </label>
+                            <button class="secondary-command" @onclick="SaveAzureMapsKey">Salva chiave Azure Maps</button>
+                            <div class="service-note">
+                                <strong>Quota gratuita Azure Maps Gen2</strong>
+                                <p>Include ogni mese 5.000 transazioni per le mappe stradali e 1.000 per le immagini satellitari. Ogni transazione comprende fino a 15 tessere.</p>
+                            </div>
+                        </section>
 
-                        <button class="secondary-command" @onclick="ExportCadastralImage">Mostra vista WMS corrente</button>
-                        <footer>Dati catastali: Agenzia delle Entrate, licenza CC BY 4.0. App indipendente.</footer>
+                        <section class="panel-section">
+                            <h2>GPS e percorso</h2>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" checked="@ShowGpsPosition" @onchange="ToggleGpsPosition" />
+                                <span>Mostra punto e cerchio GPS</span>
+                            </label>
+                            <label class="toggle-line project-save-option">
+                                <input type="checkbox" checked="@TrailEnabled" @onchange="ToggleTrail" />
+                                <span>Registra la traccia mentre cammini</span>
+                            </label>
+                        </section>
+
+                        <section class="panel-section">
+                            <h2>Servizi Agenzia delle Entrate</h2>
+                            <div class="service-note protected-service">
+                                <strong>Download documenti e fogli ufficiali</strong>
+                                <p>Il CAPTCHA o l'accesso SPID/CIE vengono gestiti direttamente dal sito dell'Agenzia. Per sicurezza l'app non tenta di aggirarli.</p>
+                                <button class="primary-command" @onclick="OpenOfficialGeoportal">Apri Geoportale catastale</button>
+                                <button class="secondary-command" @onclick="OpenOfficialReservedArea">Apri Area riservata per download</button>
+                            </div>
+                            <button class="secondary-command" @onclick="ExportCadastralImage">Mostra vista WMS corrente</button>
+                            <footer>Dati catastali: Agenzia delle Entrate, licenza CC BY 4.0. App indipendente.</footer>
+                        </section>
                     </section>
                 }
             </aside>
@@ -259,6 +341,7 @@
         <nav class="bottom-tabs" aria-label="Sezioni principali">
             <button class="@(ActiveTab == "map" || ActiveTab == "search" ? "active" : null)" @onclick='() => SelectTab("map")'>Mappa</button>
             <button class="@(ActiveTab == "cadastre" ? "active" : null)" @onclick='() => SelectTab("cadastre")'>Catasto</button>
+            <button class="@(ActiveTab == "data" ? "active" : null)" @onclick='() => SelectTab("data")'>Dati</button>
             <button class="@(ActiveTab == "projects" ? "active" : null)" @onclick='() => SelectTab("projects")'>Progetti</button>
             <button class="@(ActiveTab == "settings" ? "active" : null)" @onclick='() => SelectTab("settings")'>Impostazioni</button>
         </nav>
@@ -268,7 +351,10 @@
 @code {
     private string ActiveTab { get; set; } = "map";
     private string SearchText { get; set; } = string.Empty;
-    private string ProjectName { get; set; } = string.Empty;
+    private string NewProjectName { get; set; } = string.Empty;
+    private string PoiName { get; set; } = string.Empty;
+    private string SelectedProjectId { get; set; } = string.Empty;
+    private string ProjectArchiveMessage { get; set; } = "Nessun progetto salvato.";
     private string Status { get; set; } = "online";
     private string SelectedBaseLayer { get; set; } = "satellite";
     private string GoogleMapsApiKey { get; set; } = string.Empty;
@@ -281,9 +367,15 @@
     private double? CatalogFraction { get; set; }
     private bool CatalogBusy { get; set; }
     private bool GpsActive { get; set; }
+    private bool ShowGpsPosition { get; set; } = true;
     private bool DrawToolsVisible { get; set; }
     private bool TrailEnabled { get; set; }
     private bool LayerPanelOpen { get; set; }
+    private bool IncludeCadastralParcels { get; set; } = true;
+    private bool IncludeKmlSheetLayer { get; set; }
+    private bool ShowImportedMeasurements { get; set; }
+    private bool ShowDrawingMeasurements { get; set; } = true;
+    private bool ProjectBusy { get; set; }
     private CancellationTokenSource? CatalogCancellation { get; set; }
     private CancellationTokenSource? GpsLookupCancellation { get; set; }
     private long LastGpsLookupAt;
@@ -293,6 +385,7 @@
     private IReadOnlyList<MunicipalityOption> Municipalities { get; set; } = [];
     private IReadOnlyList<string> Sheets { get; set; } = [];
     private IReadOnlyList<ParcelOption> Parcels { get; set; } = [];
+    private IReadOnlyList<MapProjectSummary> Projects { get; set; } = [];
 
     private MunicipalityOption? SelectedMunicipality =>
         Municipalities.FirstOrDefault(item => item.Code == SelectedMunicipalityCode);
@@ -303,7 +396,8 @@
     private string PanelTitle => ActiveTab switch
     {
         "cadastre" => "Ricerca catastale",
-        "projects" => "Progetti e dati",
+        "data" => "Dati e disegni",
+        "projects" => "Archivio progetti",
         "settings" => "Impostazioni",
         _ => string.Empty
     };
@@ -311,7 +405,8 @@
     private string PanelEyebrow => ActiveTab switch
     {
         "cadastre" => "Regione, Comune, Foglio, Particella",
-        "projects" => "KML, KMZ, GeoJSON e POI",
+        "data" => "File GIS, misure e POI",
+        "projects" => "Salva e apri i tuoi lavori",
         "settings" => "Mappa, GPS e servizi ufficiali",
         _ => string.Empty
     };
@@ -354,6 +449,8 @@
         {
             CatalogMessage = $"Catalogo Comuni non disponibile: {error.Message}";
         }
+
+        await RefreshProjectsAsync();
     }
 
     protected override async Task OnAfterRenderAsync(bool firstRender)
@@ -361,6 +458,58 @@
         if (firstRender)
         {
             await JS.InvokeVoidAsync("lmeMap.init");
+            await CenterOnInitialLocationAsync();
+            await MigrateLegacyProjectAsync();
+        }
+    }
+
+    private async Task CenterOnInitialLocationAsync()
+    {
+        using var timeout = new CancellationTokenSource(TimeSpan.FromSeconds(12));
+        try
+        {
+            var location = await LocationService.GetCurrentLocationAsync(timeout.Token);
+            if (location is not null)
+            {
+                await JS.InvokeVoidAsync("lmeMap.showInitialPosition", location);
+            }
+            else
+            {
+                await JS.InvokeVoidAsync("lmeMap.showInfo", "Posizione iniziale non disponibile. La mappa resta utilizzabile normalmente.");
+            }
+        }
+        catch (OperationCanceledException)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Ricerca della posizione iniziale scaduta. Usa Avvia GPS per riprovare.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Posizione iniziale non disponibile: {error.GetBaseException().Message}");
+        }
+    }
+
+    private async Task MigrateLegacyProjectAsync()
+    {
+        try
+        {
+            var legacySnapshot = await JS.InvokeAsync<string?>("lmeMap.getLegacyProjectSnapshot");
+            if (string.IsNullOrWhiteSpace(legacySnapshot))
+            {
+                return;
+            }
+
+            var migrated = await ProjectStorageService.SaveAsync(
+                "Progetto precedente",
+                legacySnapshot,
+                false);
+            await JS.InvokeVoidAsync("lmeMap.clearLegacyProjectSnapshot");
+            await RefreshProjectsAsync();
+            SelectedProjectId = migrated.Id;
+            await InvokeAsync(StateHasChanged);
+        }
+        catch
+        {
+            // The legacy value remains available and migration can be retried at the next start.
         }
     }
 
@@ -371,6 +520,10 @@
         {
             LayerPanelOpen = false;
         }
+        if (tab == "projects")
+        {
+            await RefreshProjectsAsync();
+        }
         await Task.Delay(30);
         await JS.InvokeVoidAsync("lmeMap.resize");
     }
@@ -558,6 +711,12 @@
         }
     }
 
+    private async Task ToggleGpsPosition(ChangeEventArgs args)
+    {
+        ShowGpsPosition = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setGpsPositionVisible", ShowGpsPosition);
+    }
+
     private async Task StartGps()
     {
         GpsActive = true;
@@ -665,7 +824,37 @@
 
     private Task FitImportedLayers() => JS.InvokeVoidAsync("lmeMap.fitImported").AsTask();
     private Task ClearImportedLayers() => JS.InvokeVoidAsync("lmeMap.clearImported").AsTask();
-    private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", ProjectName).AsTask();
+    private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", PoiName).AsTask();
+
+    private async Task ToggleKmlSheetLayer(ChangeEventArgs args)
+    {
+        IncludeKmlSheetLayer = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setIncludeKmlSheetLayer", IncludeKmlSheetLayer);
+    }
+
+    private async Task ToggleImportedMeasurements(ChangeEventArgs args)
+    {
+        ShowImportedMeasurements = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setImportedMeasurementsVisible", ShowImportedMeasurements);
+    }
+
+    private async Task ToggleDrawingMeasurements(ChangeEventArgs args)
+    {
+        ShowDrawingMeasurements = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setDrawingMeasurementsVisible", ShowDrawingMeasurements);
+    }
+
+    private async Task StartMeasurementDrawing(string mode)
+    {
+        DrawToolsVisible = false;
+        await JS.InvokeVoidAsync("lmeMap.setDrawToolsVisible", false);
+        ActiveTab = "map";
+        LayerPanelOpen = false;
+        await Task.Delay(30);
+        await JS.InvokeVoidAsync("lmeMap.resize");
+        await JS.InvokeVoidAsync("lmeMap.startMeasurementDrawing", mode);
+    }
+
     private async Task ToggleDrawTools()
     {
         DrawToolsVisible = !DrawToolsVisible;
@@ -678,8 +867,136 @@
     }
 
     private Task ClearDrawings() => JS.InvokeVoidAsync("lmeMap.clearDrawings").AsTask();
-    private Task SaveWorkspace() => JS.InvokeVoidAsync("lmeMap.saveWorkspace").AsTask();
-    private Task LoadWorkspace() => JS.InvokeVoidAsync("lmeMap.loadWorkspace").AsTask();
+
+    private async Task RefreshProjectsAsync()
+    {
+        try
+        {
+            Projects = await ProjectStorageService.GetProjectsAsync();
+            if (Projects.All(project => project.Id != SelectedProjectId))
+            {
+                SelectedProjectId = string.Empty;
+            }
+            ProjectArchiveMessage = Projects.Count == 0
+                ? "Nessun progetto salvato."
+                : $"{Projects.Count} {(Projects.Count == 1 ? "progetto salvato" : "progetti salvati")} nell'archivio interno.";
+        }
+        catch (Exception error)
+        {
+            ProjectArchiveMessage = $"Archivio non disponibile: {error.GetBaseException().Message}";
+        }
+    }
+
+    private Task SelectProject(ChangeEventArgs args)
+    {
+        SelectedProjectId = args.Value?.ToString() ?? string.Empty;
+        return Task.CompletedTask;
+    }
+
+    private async Task SaveProject()
+    {
+        var name = NewProjectName.Trim();
+        if (string.IsNullOrWhiteSpace(name))
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Inserisci il nome del progetto.");
+            return;
+        }
+
+        var existing = Projects.FirstOrDefault(project =>
+            string.Equals(project.Name, name, StringComparison.CurrentCultureIgnoreCase));
+        if (existing is not null
+            && !await JS.InvokeAsync<bool>("confirm", $"Il progetto '{existing.Name}' esiste gia. Sovrascriverlo?"))
+        {
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            var snapshot = await JS.InvokeAsync<string>("lmeMap.createProjectSnapshot", IncludeCadastralParcels);
+            var saved = await ProjectStorageService.SaveAsync(
+                name,
+                snapshot,
+                IncludeCadastralParcels,
+                existing?.Id);
+            await RefreshProjectsAsync();
+            SelectedProjectId = saved.Id;
+            NewProjectName = saved.Name;
+            await JS.InvokeVoidAsync(
+                "lmeMap.showInfo",
+                IncludeCadastralParcels
+                    ? $"Progetto salvato: {saved.Name}, incluse le particelle rosse."
+                    : $"Progetto salvato: {saved.Name}, senza particelle rosse.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non salvato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
+
+    private async Task LoadProject()
+    {
+        var project = Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
+        if (project is null)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Seleziona il progetto da caricare.");
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            var snapshot = await ProjectStorageService.LoadAsync(project.Id);
+            await JS.InvokeVoidAsync("lmeMap.loadProjectSnapshot", snapshot, project.Name);
+            NewProjectName = project.Name;
+            IncludeCadastralParcels = project.IncludesCadastralParcels;
+            ActiveTab = "map";
+            await Task.Delay(30);
+            await JS.InvokeVoidAsync("lmeMap.resize");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non caricato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
+
+    private async Task DeleteProject()
+    {
+        var project = Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
+        if (project is null)
+        {
+            return;
+        }
+        if (!await JS.InvokeAsync<bool>("confirm", $"Eliminare definitivamente il progetto '{project.Name}'?"))
+        {
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            await ProjectStorageService.DeleteAsync(project.Id);
+            SelectedProjectId = string.Empty;
+            await RefreshProjectsAsync();
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto eliminato: {project.Name}.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non eliminato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
     private Task CenterOnGps() => JS.InvokeVoidAsync("lmeMap.centerOnGps").AsTask();
     private async Task ToggleTrail(ChangeEventArgs args)
     {

LMEMappeCatastaliApp.csproj

@@ -28,8 +28,8 @@
         <ApplicationId>com.companyname.lmemappecatastaliapp</ApplicationId>
 
         <!-- Versions -->
-        <ApplicationDisplayVersion>0.2.6</ApplicationDisplayVersion>
-        <ApplicationVersion>10</ApplicationVersion>
+        <ApplicationDisplayVersion>0.2.10</ApplicationDisplayVersion>
+        <ApplicationVersion>14</ApplicationVersion>
 
         <!-- To develop, package, and publish an app to the Microsoft Store, see: https://aka.ms/MauiTemplateUnpackaged -->
         <WindowsPackageType>None</WindowsPackageType>

MauiProgram.cs

@@ -21,6 +21,7 @@ public static class MauiProgram
         builder.Services.AddSingleton<OfficialCadastreService>();
         builder.Services.AddSingleton<LocationSearchService>();
         builder.Services.AddSingleton<AzureMapsService>();
+        builder.Services.AddSingleton<ProjectStorageService>();
 
 #if DEBUG
         builder.Services.AddBlazorWebViewDeveloperTools();

README.md

@@ -9,15 +9,22 @@ App .NET MAUI Blazor Hybrid per Android, iOS, Mac Catalyst e Windows, pensata pe
 - Trasparenza configurabile del layer catastale.
 - Interrogazione WMS con click/tap sulla mappa.
 - Import di file KML, KMZ, GeoJSON e JSON.
+- Import GeoJSON compatibile con BOM, geometrie singole, array, FeatureCollection e coordinate Web Mercator EPSG:3857.
+- Filtro KML/KMZ `solo particelle` attivo per impostazione predefinita, con separazione dei MultiPolygon ed esclusione di GroundOverlay e perimetri del foglio; il layer foglio resta importabile tramite opzione.
 - Inquadramento e pulizia dei layer importati.
 - Disegno di marker, linee, poligoni e rettangoli.
+- Modalita rapide Area, Distanza e Cerchio disponibili direttamente sulla mappa, con superficie, perimetro, raggio, circonferenza e lunghezza dei singoli lati.
+- Misure permanenti attivabili anche sui layer importati da KML, KMZ e GeoJSON.
 - Toolbar di disegno completa di icone, modifica, eliminazione singola e pulizia di tutti i disegni/POI.
-- POI/progetti salvabili in locale con `localStorage`.
+- Archivio multiprogetto nella cartella privata dell'app, con nome, selezione da elenco, sovrascrittura ed eliminazione.
+- Ogni progetto salva file GIS, POI, disegni, traccia e inquadratura; l'inclusione delle particelle catastali rosse e' opzionale.
 - GPS nativo MAUI ad alta precisione con permessi Android/iOS.
+- Centratura automatica una tantum sulla posizione attuale all'apertura, senza mostrare il punto o il cerchio e senza avviare il tracking GPS continuo.
+- Punto e cerchio di precisione del GPS live possono essere mostrati o nascosti dalle impostazioni senza fermare il rilevamento.
 - Marker posizione, cerchio accuratezza in metri, tracciamento percorso.
 - Controllo se la posizione GPS cade dentro un poligono importato o disegnato.
 - Interrogazione WFS ufficiale Agenzia delle Entrate attorno alla posizione GPS per evidenziare la particella catastale corrente quando il servizio restituisce la geometria.
-- Mappa a tutto schermo con tab Catasto, Progetti e Impostazioni, adattabile agli schermi pieghevoli.
+- Mappa a tutto schermo con tab separati Catasto, Dati, Progetti e Impostazioni, adattabile agli schermi pieghevoli.
 - Ingrandimento oltre lo zoom satellitare nativo senza tessere "Map data not yet available".
 - Tendine concatenate Regione, Comune, Foglio e Particella.
 - Ricerca di localita e indirizzi eseguita nativamente con fallback Esri e OpenStreetMap, senza richieste CORS dalla WebView.

Services/AzureMapsService.cs

@@ -13,7 +13,7 @@ public sealed class AzureMapsService
 
     public AzureMapsService()
     {
-        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.6");
+        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.10");
         _httpClient.DefaultRequestHeaders.Accept.ParseAdd("application/json");
     }
 

Services/PreciseLocationService.cs

@@ -20,6 +20,37 @@ public sealed class PreciseLocationService : IAsyncDisposable
         return status;
     }
 
+    public async Task<LocationSnapshot?> GetCurrentLocationAsync(CancellationToken cancellationToken = default)
+    {
+        var permission = await EnsurePermissionAsync();
+        if (permission != PermissionStatus.Granted)
+        {
+            return null;
+        }
+
+        Location? location = null;
+        try
+        {
+            var request = new GeolocationRequest(GeolocationAccuracy.Best, TimeSpan.FromSeconds(8));
+            location = await Geolocation.Default.GetLocationAsync(request, cancellationToken);
+        }
+        catch (FeatureNotSupportedException)
+        {
+            return null;
+        }
+
+        if (location is null)
+        {
+            var lastKnown = await Geolocation.Default.GetLastKnownLocationAsync();
+            if (lastKnown is not null && lastKnown.Timestamp >= DateTimeOffset.UtcNow.AddMinutes(-15))
+            {
+                location = lastKnown;
+            }
+        }
+
+        return location is null ? null : ToSnapshot(location);
+    }
+
     public async Task StartTrackingAsync(Func<LocationSnapshot, Task> onLocation, Func<string, Task> onError)
     {
         if (trackingCancellation is not null)
@@ -47,14 +78,7 @@ public sealed class PreciseLocationService : IAsyncDisposable
                     var location = await Geolocation.Default.GetLocationAsync(request, token);
                     if (location is not null)
                     {
-                        await onLocation(new LocationSnapshot(
-                            location.Latitude,
-                            location.Longitude,
-                            location.Accuracy,
-                            location.Altitude,
-                            location.Course,
-                            location.Speed,
-                            location.Timestamp));
+                        await onLocation(ToSnapshot(location));
                     }
                 }
                 catch (OperationCanceledException)
@@ -84,6 +108,15 @@ public sealed class PreciseLocationService : IAsyncDisposable
         StopTracking();
         return ValueTask.CompletedTask;
     }
+
+    private static LocationSnapshot ToSnapshot(Location location) => new(
+        location.Latitude,
+        location.Longitude,
+        location.Accuracy,
+        location.Altitude,
+        location.Course,
+        location.Speed,
+        location.Timestamp);
 }
 
 public sealed record LocationSnapshot(

Services/ProjectStorageService.cs

@@ -0,0 +1,202 @@
+using System.Text;
+using System.Text.Json;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class ProjectStorageService
+{
+    private const string ProjectExtension = ".lmeproject.json";
+    private readonly SemaphoreSlim _gate = new(1, 1);
+    private readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web)
+    {
+        WriteIndented = true
+    };
+
+    private string ProjectsDirectory => Path.Combine(FileSystem.AppDataDirectory, "Projects");
+
+    public async Task<IReadOnlyList<MapProjectSummary>> GetProjectsAsync()
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var files = await ReadProjectFilesAsync();
+            return files
+                .Select(item => item.Document.ToSummary())
+                .OrderByDescending(item => item.UpdatedAt)
+                .ThenBy(item => item.Name, StringComparer.CurrentCultureIgnoreCase)
+                .ToArray();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task<MapProjectSummary> SaveAsync(
+        string name,
+        string snapshotJson,
+        bool includesCadastralParcels,
+        string? projectId = null)
+    {
+        var normalizedName = NormalizeName(name);
+        using var snapshotDocument = JsonDocument.Parse(snapshotJson);
+        if (snapshotDocument.RootElement.ValueKind != JsonValueKind.Object)
+        {
+            throw new InvalidDataException("I dati della mappa non sono validi.");
+        }
+
+        await _gate.WaitAsync();
+        try
+        {
+            Directory.CreateDirectory(ProjectsDirectory);
+            var files = await ReadProjectFilesAsync();
+            var existing = files.FirstOrDefault(item =>
+                (!string.IsNullOrWhiteSpace(projectId) && item.Document.Id == projectId)
+                || string.Equals(item.Document.Name, normalizedName, StringComparison.CurrentCultureIgnoreCase));
+
+            var now = DateTimeOffset.UtcNow;
+            var id = existing?.Document.Id ?? Guid.NewGuid().ToString("N");
+            var document = new MapProjectDocument
+            {
+                SchemaVersion = 1,
+                Id = id,
+                Name = normalizedName,
+                CreatedAt = existing?.Document.CreatedAt ?? now,
+                UpdatedAt = now,
+                IncludesCadastralParcels = includesCadastralParcels,
+                Map = snapshotDocument.RootElement.Clone()
+            };
+
+            var path = existing?.Path ?? Path.Combine(ProjectsDirectory, BuildFileName(normalizedName, id));
+            var temporaryPath = path + ".tmp";
+            try
+            {
+                await File.WriteAllTextAsync(
+                    temporaryPath,
+                    JsonSerializer.Serialize(document, _jsonOptions),
+                    new UTF8Encoding(false));
+                File.Move(temporaryPath, path, true);
+            }
+            finally
+            {
+                if (File.Exists(temporaryPath))
+                {
+                    File.Delete(temporaryPath);
+                }
+            }
+
+            return document.ToSummary();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task<string> LoadAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync())
+                .FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            return project.Document.Map.GetRawText();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task DeleteAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync())
+                .FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            File.Delete(project.Path);
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    private async Task<IReadOnlyList<ProjectFileEntry>> ReadProjectFilesAsync()
+    {
+        Directory.CreateDirectory(ProjectsDirectory);
+        var projects = new List<ProjectFileEntry>();
+        foreach (var path in Directory.EnumerateFiles(ProjectsDirectory, $"*{ProjectExtension}"))
+        {
+            try
+            {
+                await using var stream = File.OpenRead(path);
+                var document = await JsonSerializer.DeserializeAsync<MapProjectDocument>(stream, _jsonOptions);
+                if (document is not null
+                    && !string.IsNullOrWhiteSpace(document.Id)
+                    && !string.IsNullOrWhiteSpace(document.Name)
+                    && document.Map.ValueKind == JsonValueKind.Object)
+                {
+                    projects.Add(new ProjectFileEntry(path, document));
+                }
+            }
+            catch (JsonException)
+            {
+                // A damaged project is ignored so the remaining archive stays usable.
+            }
+            catch (IOException)
+            {
+            }
+        }
+
+        return projects;
+    }
+
+    private static string NormalizeName(string name)
+    {
+        var normalized = string.Join(' ', (name ?? string.Empty).Split(
+            [' ', '\t', '\r', '\n'],
+            StringSplitOptions.RemoveEmptyEntries));
+        if (string.IsNullOrWhiteSpace(normalized))
+        {
+            throw new ArgumentException("Inserisci il nome del progetto.");
+        }
+
+        return normalized.Length <= 80 ? normalized : normalized[..80];
+    }
+
+    private static string BuildFileName(string name, string id)
+    {
+        var invalid = Path.GetInvalidFileNameChars().ToHashSet();
+        var safeName = new string(name
+            .Select(character => invalid.Contains(character) ? '-' : character)
+            .ToArray())
+            .Trim(' ', '.');
+        safeName = string.IsNullOrWhiteSpace(safeName) ? "Progetto" : safeName;
+        return $"{safeName}--{id[..8]}{ProjectExtension}";
+    }
+
+    private sealed record ProjectFileEntry(string Path, MapProjectDocument Document);
+
+    private sealed class MapProjectDocument
+    {
+        public int SchemaVersion { get; init; }
+        public string Id { get; init; } = string.Empty;
+        public string Name { get; init; } = string.Empty;
+        public DateTimeOffset CreatedAt { get; init; }
+        public DateTimeOffset UpdatedAt { get; init; }
+        public bool IncludesCadastralParcels { get; init; }
+        public JsonElement Map { get; init; }
+
+        public MapProjectSummary ToSummary() => new(Id, Name, UpdatedAt, IncludesCadastralParcels);
+    }
+}
+
+public sealed record MapProjectSummary(
+    string Id,
+    string Name,
+    DateTimeOffset UpdatedAt,
+    bool IncludesCadastralParcels);

wwwroot/css/app.css

@@ -292,6 +292,43 @@ input[type="checkbox"] {
     color: var(--ink);
 }
 
+.map-measure-tools {
+    position: absolute;
+    top: 72px;
+    right: 12px;
+    z-index: 860;
+    display: grid;
+    grid-template-columns: auto repeat(3, minmax(76px, auto));
+    align-items: center;
+    gap: 6px;
+    padding: 7px;
+    border: 1px solid rgba(255, 255, 255, 0.7);
+    border-radius: 8px;
+    background: rgba(255, 255, 255, 0.96);
+    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.2);
+    transition: top 140ms ease;
+}
+
+.map-measure-tools > span {
+    padding: 0 4px;
+    color: var(--muted);
+    font-size: 10px;
+    font-weight: 800;
+    text-transform: uppercase;
+}
+
+.map-measure-tools button {
+    min-height: 38px;
+    padding: 0 10px;
+    background: #fff3e8;
+    color: #8a3a08;
+    border: 1px solid #e4b58f;
+}
+
+.map-measure-tools.search-open {
+    top: 140px;
+}
+
 .tool-sheet {
     position: absolute;
     top: 0;
@@ -358,6 +395,29 @@ h2 {
     padding: 15px 16px 24px;
 }
 
+.panel-section {
+    display: grid;
+    gap: 12px;
+    padding: 0 0 16px;
+    border-bottom: 1px solid var(--line);
+}
+
+.panel-section:last-child {
+    padding-bottom: 0;
+    border-bottom: 0;
+}
+
+.panel-section h2 {
+    margin-top: 0;
+}
+
+.field-help {
+    margin-top: -7px;
+    color: var(--muted);
+    font-size: 10px;
+    line-height: 1.35;
+}
+
 label {
     display: grid;
     gap: 5px;
@@ -459,6 +519,69 @@ label {
     height: 18px;
 }
 
+.project-save-option {
+    padding: 10px 11px;
+    border: 1px solid var(--line);
+    border-radius: 6px;
+    background: #fff;
+}
+
+.project-archive-state {
+    color: var(--muted);
+    font-size: 11px;
+    line-height: 1.35;
+}
+
+.measurement-mode-grid {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 7px;
+}
+
+.measurement-mode-grid button {
+    min-width: 0;
+    padding: 0 8px;
+}
+
+.lme-measure-label {
+    width: 0 !important;
+    height: 0 !important;
+    border: 0 !important;
+    background: transparent !important;
+    pointer-events: none !important;
+}
+
+.lme-measure-label span {
+    position: absolute;
+    transform: translate(-50%, -50%);
+    border: 1px solid rgba(23, 33, 43, 0.35);
+    border-radius: 4px;
+    padding: 2px 5px;
+    background: rgba(255, 255, 255, 0.92);
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.24);
+    color: #17212b;
+    font-size: 10px;
+    font-weight: 800;
+    line-height: 1.25;
+    white-space: nowrap;
+}
+
+.lme-measure-label.imported span {
+    border-color: #15806a;
+    color: #0c5749;
+}
+
+.lme-measure-label.drawing span {
+    border-color: #d35d0b;
+    color: #7c2d12;
+}
+
+.lme-measure-label.side span {
+    padding: 1px 4px;
+    font-size: 9px;
+    font-weight: 700;
+}
+
 .map-info {
     position: absolute;
     left: 12px;
@@ -574,7 +697,7 @@ label {
     left: 0;
     z-index: 1200;
     display: grid;
-    grid-template-columns: repeat(4, minmax(0, 1fr));
+    grid-template-columns: repeat(5, minmax(0, 1fr));
     height: var(--nav-height);
     padding-bottom: env(safe-area-inset-bottom);
     border-top: 1px solid #bcc7cd;
@@ -632,6 +755,16 @@ footer {
     display: none;
 }
 
+@media (min-width: 701px) and (max-width: 900px) {
+    .map-measure-tools {
+        top: 126px;
+    }
+
+    .map-measure-tools.search-open {
+        top: 194px;
+    }
+}
+
 @media (max-width: 700px) {
     .map-toolbar {
         top: 8px;
@@ -675,6 +808,22 @@ footer {
         top: 136px;
     }
 
+    .map-measure-tools,
+    .map-measure-tools.search-open {
+        top: 126px;
+        right: 8px;
+        left: 8px;
+        grid-template-columns: repeat(3, minmax(0, 1fr));
+    }
+
+    .map-measure-tools.search-open {
+        top: 194px;
+    }
+
+    .map-measure-tools > span {
+        display: none;
+    }
+
     .gps-main,
     .gps-center {
         padding: 0 8px;