Add stable cascading cadastral search and fullscreen map UI

Components/Pages/Home.razor

@@ -1,104 +1,144 @@
 @page "/"
 @inject IJSRuntime JS
 @inject PreciseLocationService LocationService
+@inject CadastralCatalogService CatalogService
 @implements IAsyncDisposable
 
 <PageTitle>LME Mappe Catastali</PageTitle>
 
 <div class="map-app">
-    <aside class="tool-panel">
+    <section class="map-stage">
-        <section class="brand">
+        <div id="map"></div>
+
+        <header class="map-toolbar">
+            <div class="app-identity">
+                <strong>LME Catasto</strong>
+                <span>@Status</span>
+            </div>
+            <button class="toolbar-button" @onclick='() => SelectTab(ActiveTab == "search" ? "map" : "search")'>Cerca</button>
+        </header>
+
+        <div class="map-search @(ActiveTab == "search" ? "is-open" : null)">
+            <input @bind="SearchText" @bind:event="oninput" placeholder="Localita, indirizzo o coordinate" />
+            <button @onclick="SearchLocation">Vai</button>
+        </div>
+
+        <div class="gps-overlay">
+            <div class="gps-state">
+                <span id="gpsState">GPS non attivo</span>
+                <strong id="parcelState">Nessuna particella selezionata</strong>
+            </div>
+            <button class="gps-main" @onclick="ToggleGps">@(GpsActive ? "Ferma GPS" : "Avvia GPS")</button>
+            <button class="gps-center" @onclick="CenterOnGps" aria-label="Centra posizione">Centra</button>
+        </div>
+
+        @if (ActiveTab is not "map" and not "search")
+        {
+            <aside class="tool-sheet">
+                <div class="sheet-header">
                     <div>
-                <p class="eyebrow">Catasto, rilievi e progetti</p>
+                        <p class="eyebrow">@PanelEyebrow</p>
-                <h1>LME Mappe Catastali</h1>
+                        <h1>@PanelTitle</h1>
                     </div>
-            <span class="status">@Status</span>
+                    <button class="close-button" @onclick='() => SelectTab("map")' aria-label="Chiudi pannello">×</button>
-        </section>
-
-        <section class="panel-section">
-            <h2>Ricerca libera</h2>
-            <div class="input-row">
-                <input @bind="SearchText" @bind:event="oninput" placeholder="Indirizzo, localita, coordinate..." />
-                <button @onclick="SearchLocation">Cerca</button>
                 </div>
-        </section>
 
-        <section class="panel-section">
+                @if (ActiveTab == "cadastre")
-            <h2>Particella catastale</h2>
+                {
-            <div class="field-grid">
+                    <section class="panel-content">
                         <label>
                             Regione
-                    <input @bind="CadastralRegion" placeholder="Lombardia" />
+                            <select value="@SelectedRegionFile" @onchange="OnRegionChanged">
+                                <option value="">Seleziona regione</option>
+                                @foreach (var region in Regions)
+                                {
+                                    <option value="@region.DataFile">@region.Name</option>
+                                }
+                            </select>
                         </label>
+
                         <label>
                             Comune
-                    <input @bind="CadastralMunicipality" placeholder="Milano" />
+                            <select value="@SelectedMunicipalityCode" @onchange="OnMunicipalityChanged" disabled="@(Municipalities.Count == 0)">
-                </label>
+                                <option value="">Seleziona comune</option>
-                <label>
+                                @foreach (var municipality in Municipalities)
-                    Codice catastale
+                                {
-                    <input @bind="CadastralMunicipalityCode" placeholder="F205" />
+                                    <option value="@municipality.Code">@municipality.Name (@municipality.Code)</option>
+                                }
+                            </select>
                         </label>
+
                         <label>
                             Foglio
-                    <input @bind="CadastralSheet" placeholder="12" />
+                            <select value="@SelectedSheet" @onchange="OnSheetChanged" disabled="@(Sheets.Count == 0 || CatalogBusy)">
+                                <option value="">Seleziona foglio</option>
+                                @foreach (var sheet in Sheets)
+                                {
+                                    <option value="@sheet">@DisplaySheet(sheet)</option>
+                                }
+                            </select>
                         </label>
+
                         <label>
                             Particella
-                    <input @bind="CadastralParcel" placeholder="345" />
+                            <select value="@SelectedParcelNumber" @onchange="OnParcelChanged" disabled="@(Parcels.Count == 0 || CatalogBusy)">
+                                <option value="">Seleziona particella</option>
+                                @foreach (var parcel in Parcels)
+                                {
+                                    <option value="@parcel.Number">@parcel.Number</option>
+                                }
+                            </select>
                         </label>
-            </div>
-            <div class="button-row">
-                <button @onclick="LocateParcel">Vai alla zona</button>
-                <button @onclick="ExportCadastralImage">Scarica vista</button>
-            </div>
-            <p class="hint">Il layer ufficiale WMS dell'Agenzia delle Entrate e' attivo; la selezione geometrica precisa della particella sara' collegata al servizio WFS/API.</p>
-        </section>
 
-        <section class="panel-section">
+                        @if (!string.IsNullOrWhiteSpace(CatalogMessage))
+                        {
+                            <div class="catalog-progress">
+                                <span>@CatalogMessage</span>
+                                @if (CatalogFraction.HasValue)
+                                {
+                                    <progress value="@CatalogFraction.Value" max="1"></progress>
+                                }
+                            </div>
+                        }
+
+                        <button class="primary-command" @onclick="LocateParcel" disabled="@(SelectedParcel is null || CatalogBusy)">Mostra particella sulla mappa</button>
+
+                        <div class="service-note">
+                            <strong>Mappa pubblica ufficiale</strong>
+                            <p>I confini visualizzati arrivano dai servizi WMS/WFS open data dell'Agenzia delle Entrate e non richiedono CAPTCHA.</p>
+                        </div>
+                    </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 file</button>
+                            <button @onclick="FitImportedLayers">Inquadra</button>
-                <button @onclick="ClearImportedLayers">Pulisci file</button>
+                            <button class="secondary-command" @onclick="ClearImportedLayers">Pulisci</button>
                         </div>
-        </section>
 
-        <section class="panel-section">
                         <h2>Progetti e POI</h2>
-            <div class="input-row">
+                        <label>
+                            Nome
                             <input @bind="ProjectName" @bind:event="oninput" placeholder="Nome progetto o POI" />
-                <button @onclick="AddProjectMarker">Aggiungi</button>
+                        </label>
-            </div>
+                        <button class="primary-command" @onclick="AddProjectMarker">Aggiungi POI al centro mappa</button>
                         <div class="button-row">
                             <button @onclick="EnableDrawTools">Disegna</button>
                             <button @onclick="SaveWorkspace">Salva</button>
                             <button @onclick="LoadWorkspace">Carica</button>
                         </div>
                     </section>
-
+                }
-        <section class="panel-section live-section">
+                else if (ActiveTab == "settings")
-            <h2>GPS dal vivo</h2>
+                {
-            <div class="gps-readout">
+                    <section class="panel-content">
-                <span id="gpsState">GPS non attivo</span>
+                        <h2>Visualizzazione</h2>
-                <strong id="parcelState">Fuori da poligoni caricati</strong>
-            </div>
-            <div class="button-row">
-                <button @onclick="StartGps">Segui posizione</button>
-                <button @onclick="StopGps">Stop</button>
-                <button @onclick="CenterOnGps">Centra</button>
-            </div>
-            <label class="toggle-line">
-                <input type="checkbox" checked @onchange="ToggleTrail" />
-                Registra percorso
-            </label>
-        </section>
-
-        <section class="panel-section">
-            <h2>Livelli</h2>
-            <div class="field-grid compact">
                         <label>
                             Sfondo
                             <select @onchange="ChangeBaseLayer">
@@ -110,7 +150,6 @@
                             Trasparenza catasto
                             <input type="range" min="0" max="1" step="0.05" value="0.75" @onchange="ChangeCadastreOpacity" />
                         </label>
-            </div>
                         <div class="layer-toggles">
                             @foreach (var layer in CadastralLayers)
                             {
@@ -120,28 +159,80 @@
                                 </label>
                             }
                         </div>
+
+                        <h2>GPS e percorso</h2>
+                        <label class="toggle-line">
+                            <input type="checkbox" checked @onchange="ToggleTrail" />
+                            Registra la traccia mentre cammini
+                        </label>
+
+                        <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">Apri vista WMS corrente</button>
+                        <footer>Dati catastali: Agenzia delle Entrate, licenza CC BY 4.0. App indipendente.</footer>
                     </section>
-
+                }
-        <footer>
-            Dati catastali: Agenzia delle Entrate, licenza CC BY 4.0. App indipendente.
-        </footer>
             </aside>
+        }
 
-    <section class="map-stage">
-        <div id="map"></div>
         <div id="mapInfo" class="map-info">Pronto</div>
+
+        <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 == "projects" ? "active" : null)" @onclick='() => SelectTab("projects")'>Progetti</button>
+            <button class="@(ActiveTab == "settings" ? "active" : null)" @onclick='() => SelectTab("settings")'>Impostazioni</button>
+        </nav>
     </section>
 </div>
 
 @code {
-    private string SearchText { get; set; } = "";
+    private string ActiveTab { get; set; } = "map";
-    private string CadastralRegion { get; set; } = "";
+    private string SearchText { get; set; } = string.Empty;
-    private string CadastralMunicipality { get; set; } = "";
+    private string ProjectName { get; set; } = string.Empty;
-    private string CadastralMunicipalityCode { get; set; } = "";
-    private string CadastralSheet { get; set; } = "";
-    private string CadastralParcel { get; set; } = "";
-    private string ProjectName { get; set; } = "";
     private string Status { get; set; } = "online";
+    private string SelectedRegionFile { get; set; } = string.Empty;
+    private string SelectedMunicipalityCode { get; set; } = string.Empty;
+    private string SelectedSheet { get; set; } = string.Empty;
+    private string SelectedParcelNumber { get; set; } = string.Empty;
+    private string CatalogMessage { get; set; } = string.Empty;
+    private double? CatalogFraction { get; set; }
+    private bool CatalogBusy { get; set; }
+    private bool GpsActive { get; set; }
+    private CancellationTokenSource? CatalogCancellation { get; set; }
+
+    private IReadOnlyList<RegionOption> Regions { get; set; } = [];
+    private IReadOnlyList<MunicipalityOption> Municipalities { get; set; } = [];
+    private IReadOnlyList<string> Sheets { get; set; } = [];
+    private IReadOnlyList<ParcelOption> Parcels { get; set; } = [];
+
+    private MunicipalityOption? SelectedMunicipality =>
+        Municipalities.FirstOrDefault(item => item.Code == SelectedMunicipalityCode);
+
+    private ParcelOption? SelectedParcel =>
+        Parcels.FirstOrDefault(item => item.Number == SelectedParcelNumber);
+
+    private string PanelTitle => ActiveTab switch
+    {
+        "cadastre" => "Ricerca catastale",
+        "projects" => "Progetti e dati",
+        "settings" => "Impostazioni",
+        _ => string.Empty
+    };
+
+    private string PanelEyebrow => ActiveTab switch
+    {
+        "cadastre" => "Regione, Comune, Foglio, Particella",
+        "projects" => "KML, KMZ, GeoJSON e POI",
+        "settings" => "Mappa, GPS e servizi ufficiali",
+        _ => string.Empty
+    };
 
     private readonly List<CadastralLayer> CadastralLayers =
     [
@@ -153,6 +244,18 @@
         new("acque", "Acque", false)
     ];
 
+    protected override async Task OnInitializedAsync()
+    {
+        try
+        {
+            Regions = await CatalogService.GetRegionsAsync();
+        }
+        catch (Exception error)
+        {
+            CatalogMessage = $"Catalogo Comuni non disponibile: {error.Message}";
+        }
+    }
+
     protected override async Task OnAfterRenderAsync(bool firstRender)
     {
         if (firstRender)
@@ -161,55 +264,235 @@
         }
     }
 
-    private Task SearchLocation() => JS.InvokeVoidAsync("lmeMap.search", SearchText).AsTask();
+    private async Task SelectTab(string tab)
-
-    private Task LocateParcel()
     {
-        var label = $"{CadastralRegion} {CadastralMunicipality} foglio {CadastralSheet} particella {CadastralParcel}".Trim();
+        ActiveTab = tab;
-        return JS.InvokeVoidAsync("lmeMap.locateParcelArea", CadastralRegion, CadastralMunicipality, CadastralMunicipalityCode, CadastralSheet, CadastralParcel, label).AsTask();
+        await Task.Delay(30);
+        await JS.InvokeVoidAsync("lmeMap.resize");
     }
 
-    private Task ExportCadastralImage() => JS.InvokeVoidAsync("lmeMap.exportCadastreView").AsTask();
+    private async Task SearchLocation()
+    {
+        try
+        {
+            await JS.InvokeVoidAsync("lmeMap.search", SearchText);
+            ActiveTab = "map";
+        }
+        catch (Exception error)
+        {
+            Status = "errore ricerca";
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Ricerca non riuscita: {error.Message}");
+        }
+    }
 
-    private Task FitImportedLayers() => JS.InvokeVoidAsync("lmeMap.fitImported").AsTask();
+    private async Task OnRegionChanged(ChangeEventArgs args)
+    {
+        CancelCatalogWork();
+        SelectedRegionFile = args.Value?.ToString() ?? string.Empty;
+        SelectedMunicipalityCode = string.Empty;
+        SelectedSheet = string.Empty;
+        SelectedParcelNumber = string.Empty;
+        Sheets = [];
+        Parcels = [];
+        CatalogMessage = string.Empty;
+        Municipalities = string.IsNullOrWhiteSpace(SelectedRegionFile)
+            ? []
+            : await CatalogService.GetMunicipalitiesAsync(SelectedRegionFile);
+    }
 
-    private Task ClearImportedLayers() => JS.InvokeVoidAsync("lmeMap.clearImported").AsTask();
+    private async Task OnMunicipalityChanged(ChangeEventArgs args)
+    {
+        SelectedMunicipalityCode = args.Value?.ToString() ?? string.Empty;
+        SelectedSheet = string.Empty;
+        SelectedParcelNumber = string.Empty;
+        Sheets = [];
+        Parcels = [];
+        var municipality = SelectedMunicipality;
+        if (municipality is null)
+        {
+            return;
+        }
 
-    private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", ProjectName).AsTask();
+        var token = BeginCatalogWork();
+        CatalogBusy = true;
+        CatalogMessage = "Preparo il catalogo regionale...";
+        CatalogFraction = null;
+        try
+        {
+            Sheets = await CatalogService.GetSheetsAsync(municipality, CreateProgress(), token);
+            CatalogMessage = $"Seleziona uno dei {Sheets.Count} fogli disponibili.";
+            await JS.InvokeVoidAsync("lmeMap.search", $"{municipality.Name}, Italia");
+        }
+        catch (OperationCanceledException)
+        {
+        }
+        catch (Exception error)
+        {
+            CatalogMessage = $"Impossibile caricare i fogli: {error.Message}";
+            await JS.InvokeVoidAsync("lmeMap.showInfo", CatalogMessage);
+        }
+        finally
+        {
+            CatalogBusy = false;
+            CatalogFraction = null;
+        }
+    }
+
+    private async Task OnSheetChanged(ChangeEventArgs args)
+    {
+        SelectedSheet = args.Value?.ToString() ?? string.Empty;
+        SelectedParcelNumber = string.Empty;
+        Parcels = [];
+        var municipality = SelectedMunicipality;
+        if (municipality is null || string.IsNullOrWhiteSpace(SelectedSheet))
+        {
+            return;
+        }
+
+        var token = BeginCatalogWork();
+        CatalogBusy = true;
+        CatalogMessage = "Carico le particelle del foglio...";
+        CatalogFraction = null;
+        try
+        {
+            Parcels = await CatalogService.GetParcelsAsync(municipality, SelectedSheet, CreateProgress(), token);
+            CatalogMessage = $"Seleziona una delle {Parcels.Count} particelle disponibili.";
+        }
+        catch (OperationCanceledException)
+        {
+        }
+        catch (Exception error)
+        {
+            CatalogMessage = $"Impossibile caricare le particelle: {error.Message}";
+            await JS.InvokeVoidAsync("lmeMap.showInfo", CatalogMessage);
+        }
+        finally
+        {
+            CatalogBusy = false;
+            CatalogFraction = null;
+        }
+    }
+
+    private Task OnParcelChanged(ChangeEventArgs args)
+    {
+        SelectedParcelNumber = args.Value?.ToString() ?? string.Empty;
+        return Task.CompletedTask;
+    }
+
+    private async Task LocateParcel()
+    {
+        var municipality = SelectedMunicipality;
+        var parcel = SelectedParcel;
+        if (municipality is null || parcel is null)
+        {
+            return;
+        }
+
+        try
+        {
+            var label = $"{municipality.Name} - foglio {DisplaySheet(SelectedSheet)}, particella {parcel.Number}";
+            await JS.InvokeVoidAsync("lmeMap.locateParcelByPoint", parcel.Latitude, parcel.Longitude, parcel.Number, label);
+            ActiveTab = "map";
+            await Task.Delay(30);
+            await JS.InvokeVoidAsync("lmeMap.resize");
+        }
+        catch (Exception error)
+        {
+            CatalogMessage = $"Particella non visualizzata: {error.Message}";
+            await JS.InvokeVoidAsync("lmeMap.showInfo", CatalogMessage);
+        }
+    }
+
+    private async Task ToggleGps()
+    {
+        if (GpsActive)
+        {
+            await StopGps();
+        }
+        else
+        {
+            await StartGps();
+        }
+    }
 
     private async Task StartGps()
+    {
+        GpsActive = true;
+        try
         {
             await LocationService.StartTrackingAsync(
                 async location => await InvokeAsync(() => JS.InvokeVoidAsync("lmeMap.setNativeGpsPosition", location)),
                 async error => await InvokeAsync(() => JS.InvokeVoidAsync("lmeMap.setGpsError", error)));
         }
+        catch (Exception error)
+        {
+            GpsActive = false;
+            await JS.InvokeVoidAsync("lmeMap.setGpsError", error.Message);
+        }
+    }
 
     private async Task StopGps()
     {
         LocationService.StopTracking();
+        GpsActive = false;
         await JS.InvokeVoidAsync("lmeMap.stopGps");
     }
 
-    private Task CenterOnGps() => JS.InvokeVoidAsync("lmeMap.centerOnGps").AsTask();
+    private IProgress<CatalogProgress> CreateProgress() => new Progress<CatalogProgress>(progress =>
+    {
+        _ = InvokeAsync(() =>
+        {
+            CatalogMessage = progress.Message;
+            CatalogFraction = progress.Fraction;
+            StateHasChanged();
+        });
+    });
 
-    private Task ToggleTrail(ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.toggleTrail", (bool?)args.Value == true).AsTask();
+    private CancellationToken BeginCatalogWork()
+    {
+        CancelCatalogWork();
+        CatalogCancellation = new CancellationTokenSource();
+        return CatalogCancellation.Token;
+    }
 
+    private void CancelCatalogWork()
+    {
+        CatalogCancellation?.Cancel();
+        CatalogCancellation?.Dispose();
+        CatalogCancellation = null;
+    }
+
+    private static string DisplaySheet(string value)
+    {
+        var trimmed = value.TrimStart('0');
+        return string.IsNullOrEmpty(trimmed) ? "0" : trimmed;
+    }
+
+    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 EnableDrawTools() => JS.InvokeVoidAsync("lmeMap.enableDrawTools").AsTask();
-
     private Task SaveWorkspace() => JS.InvokeVoidAsync("lmeMap.saveWorkspace").AsTask();
-
     private Task LoadWorkspace() => JS.InvokeVoidAsync("lmeMap.loadWorkspace").AsTask();
-
+    private Task CenterOnGps() => JS.InvokeVoidAsync("lmeMap.centerOnGps").AsTask();
+    private Task ToggleTrail(ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.toggleTrail", (bool?)args.Value == true).AsTask();
     private Task ChangeBaseLayer(ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.setBaseLayer", args.Value?.ToString()).AsTask();
-
     private Task ChangeCadastreOpacity(ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.setCadastreOpacity", args.Value?.ToString()).AsTask();
-
     private Task ToggleCadastreLayer(string layer, ChangeEventArgs args) => JS.InvokeVoidAsync("lmeMap.toggleCadastreLayer", layer, (bool?)args.Value == true).AsTask();
+    private Task ExportCadastralImage() => JS.InvokeVoidAsync("lmeMap.exportCadastreView").AsTask();
+
+    private Task OpenOfficialGeoportal() => Microsoft.Maui.ApplicationModel.Launcher.Default.OpenAsync(
+        new Uri("https://geoportale.cartografia.agenziaentrate.gov.it/"));
+
+    private Task OpenOfficialReservedArea() => Microsoft.Maui.ApplicationModel.Launcher.Default.OpenAsync(
+        new Uri("https://www.agenziaentrate.gov.it/portale/area-riservata"));
 
     private sealed record CadastralLayer(string Key, string Name, bool Enabled);
 
-    public async ValueTask DisposeAsync()
+    public ValueTask DisposeAsync()
     {
-        await LocationService.DisposeAsync();
+        CancelCatalogWork();
+        LocationService.StopTracking();
+        return ValueTask.CompletedTask;
     }
 }

LMEMappeCatastaliApp.csproj

@@ -22,14 +22,14 @@
         <Nullable>enable</Nullable>
 
         <!-- Display name -->
-        <ApplicationTitle>LMEMappeCatastaliApp</ApplicationTitle>
+        <ApplicationTitle>LME Mappe Catastali</ApplicationTitle>
 
         <!-- App Identifier -->
         <ApplicationId>com.companyname.lmemappecatastaliapp</ApplicationId>
 
         <!-- Versions -->
-        <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
+        <ApplicationDisplayVersion>0.2.0</ApplicationDisplayVersion>
-        <ApplicationVersion>1</ApplicationVersion>
+        <ApplicationVersion>4</ApplicationVersion>
 
         <!-- To develop, package, and publish an app to the Microsoft Store, see: https://aka.ms/MauiTemplateUnpackaged -->
         <WindowsPackageType>None</WindowsPackageType>
@@ -64,6 +64,7 @@
         <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
         <PackageReference Include="Microsoft.AspNetCore.Components.WebView.Maui" Version="$(MauiVersion)" />
         <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="9.0.9" />
+        <PackageReference Include="Parquet.Net" Version="6.1.0" />
     </ItemGroup>
 
 </Project>

MauiProgram.cs

@@ -17,6 +17,7 @@ public static class MauiProgram
 
         builder.Services.AddMauiBlazorWebView();
         builder.Services.AddSingleton<PreciseLocationService>();
+        builder.Services.AddSingleton<CadastralCatalogService>();
 
 #if DEBUG
         builder.Services.AddBlazorWebViewDeveloperTools();

README.md

@@ -16,7 +16,11 @@ App .NET MAUI Blazor Hybrid per Android, iOS, Mac Catalyst e Windows, pensata pe
 - 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.
-- Ricerca Comune/Foglio/Particella tramite indice OnData e successivo recupero geometria dal WFS ufficiale AdE.
+- Mappa a tutto schermo con tab Catasto, Progetti e Impostazioni, adattabile agli schermi pieghevoli.
+- Tendine concatenate Regione, Comune, Foglio e Particella.
+- Catalogo dei Comuni incluso nell'APK e cataloghi regionali OnData scaricati in cache solo quando servono.
+- Ricerca catastale eseguita dal codice .NET nativo, senza DuckDB WebAssembly nella WebView Android.
+- Collegamenti separati al Geoportale pubblico e all'Area riservata AdE per CAPTCHA, SPID/CIE e download ufficiali.
 
 ## Limite ufficiale AdE da considerare
 
@@ -26,7 +30,9 @@ Il WFS dell'Agenzia delle Entrate consente `GetFeature` con bounding box, ma non
 2. una chiamata WFS con bounding box piccola intorno a quel punto;
 3. filtro lato app sul risultato per selezionare la particella corretta.
 
-Questo passaggio e' implementato nella schermata "Particella catastale". Per la massima affidabilita inserisci il codice catastale del Comune, ad esempio `F205` per Milano o `H501` per Roma.
+Questo passaggio e' implementato nel tab `Catasto`. Regione e Comune sono disponibili subito; alla prima selezione di un Comune l'app scarica il file della regione, da circa 6 a 72 MB, e lo conserva nella cache del dispositivo. Fogli e particelle vengono poi popolati automaticamente.
+
+I layer cartografici pubblici WMS/WFS sono open data e non richiedono CAPTCHA. Il CAPTCHA o l'autenticazione SPID/CIE appartengono ai servizi web di consultazione e download documentale: l'app li apre nel sito ufficiale dell'Agenzia e non tenta di aggirarli.
 
 ## Aprire in Visual Studio
 
@@ -50,16 +56,16 @@ Per Android:
 dotnet build -f net9.0-android -p:AndroidSdkDirectory=C:\Users\livio\AppData\Local\Android\Sdk
 ```
 
-## APK generato
+## APK Release generato
 
-La build Debug Android genera:
+La pubblicazione Android genera:
 
 ```text
-C:\Users\livio\Documents\LMEMappeCatastali\LMEMappeCatastaliApp\bin\Debug\net9.0-android\com.companyname.lmemappecatastaliapp-Signed.apk
+C:\Users\livio\Documents\LMEMappeCatastali\LMEMappeCatastaliApp\bin\Release\net9.0-android\publish\com.companyname.lmemappecatastaliapp-Signed.apk
 ```
 
 Per installarlo con telefono collegato e debug USB attivo:
 
 ```powershell
-C:\Users\livio\AppData\Local\Android\Sdk\platform-tools\adb.exe install -r C:\Users\livio\Documents\LMEMappeCatastali\LMEMappeCatastaliApp\bin\Debug\net9.0-android\com.companyname.lmemappecatastaliapp-Signed.apk
+C:\Users\livio\AppData\Local\Android\Sdk\platform-tools\adb.exe install -r C:\Users\livio\Documents\LMEMappeCatastali\LMEMappeCatastaliApp\bin\Release\net9.0-android\publish\com.companyname.lmemappecatastaliapp-Signed.apk
 ```

Services/CadastralCatalogService.cs

@@ -0,0 +1,339 @@
+using System.Text;
+using System.Text.Json;
+using Parquet;
+using Parquet.Data;
+using Parquet.Schema;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class CadastralCatalogService
+{
+    private const string DataBaseUrl = "https://raw.githubusercontent.com/ondata/dati_catastali/main/S_0000_ITALIA/anagrafica/";
+    private readonly HttpClient _httpClient = new()
+    {
+        Timeout = Timeout.InfiniteTimeSpan
+    };
+    private readonly SemaphoreSlim _downloadLock = new(1, 1);
+    private IReadOnlyList<MunicipalityOption>? _municipalities;
+
+    public CadastralCatalogService()
+    {
+        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2");
+    }
+
+    public async Task<IReadOnlyList<RegionOption>> GetRegionsAsync()
+    {
+        var municipalities = await GetAllMunicipalitiesAsync();
+        return municipalities
+            .GroupBy(item => item.DataFile, StringComparer.OrdinalIgnoreCase)
+            .Select(group => new RegionOption(RegionName(group.Key), group.Key))
+            .OrderBy(item => item.Name, StringComparer.CurrentCultureIgnoreCase)
+            .ToArray();
+    }
+
+    public async Task<IReadOnlyList<MunicipalityOption>> GetMunicipalitiesAsync(string dataFile)
+    {
+        var municipalities = await GetAllMunicipalitiesAsync();
+        return municipalities
+            .Where(item => string.Equals(item.DataFile, dataFile, StringComparison.OrdinalIgnoreCase))
+            .OrderBy(item => item.Name, StringComparer.CurrentCultureIgnoreCase)
+            .ToArray();
+    }
+
+    public async Task<IReadOnlyList<string>> GetSheetsAsync(
+        MunicipalityOption municipality,
+        IProgress<CatalogProgress>? progress = null,
+        CancellationToken cancellationToken = default)
+    {
+        var path = await EnsureRegionFileAsync(municipality.DataFile, progress, cancellationToken);
+        progress?.Report(new CatalogProgress("Leggo i fogli del Comune...", null));
+
+        var sheets = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        await using var reader = await ParquetReader.CreateAsync(path, cancellationToken: cancellationToken);
+        var communeField = RequiredField(reader.Schema, "comune");
+        var sheetField = RequiredField(reader.Schema, "foglio");
+
+        for (var groupIndex = 0; groupIndex < reader.RowGroupCount; groupIndex++)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            using var group = reader.OpenRowGroupReader(groupIndex);
+            if (!MayContain(group.GetStatistics(communeField), municipality.Code))
+            {
+                continue;
+            }
+
+            var count = checked((int)group.RowCount);
+            var communes = new string[count];
+            var sheetValues = new string[count];
+            await group.ReadAsync(communeField, communes, cancellationToken: cancellationToken);
+            await group.ReadAsync(sheetField, sheetValues, cancellationToken: cancellationToken);
+
+            for (var index = 0; index < count; index++)
+            {
+                if (string.Equals(communes[index], municipality.Code, StringComparison.OrdinalIgnoreCase)
+                    && !string.IsNullOrWhiteSpace(sheetValues[index]))
+                {
+                    sheets.Add(sheetValues[index]);
+                }
+            }
+        }
+
+        progress?.Report(new CatalogProgress($"Trovati {sheets.Count} fogli.", 1));
+        return sheets.OrderBy(value => value, NaturalStringComparer.Instance).ToArray();
+    }
+
+    public async Task<IReadOnlyList<ParcelOption>> GetParcelsAsync(
+        MunicipalityOption municipality,
+        string sheet,
+        IProgress<CatalogProgress>? progress = null,
+        CancellationToken cancellationToken = default)
+    {
+        var path = await EnsureRegionFileAsync(municipality.DataFile, progress, cancellationToken);
+        progress?.Report(new CatalogProgress("Leggo le particelle del foglio...", null));
+
+        var parcels = new Dictionary<string, ParcelOption>(StringComparer.OrdinalIgnoreCase);
+        await using var reader = await ParquetReader.CreateAsync(path, cancellationToken: cancellationToken);
+        var communeField = RequiredField(reader.Schema, "comune");
+        var sheetField = RequiredField(reader.Schema, "foglio");
+        var parcelField = RequiredField(reader.Schema, "particella");
+        var longitudeField = RequiredField(reader.Schema, "x");
+        var latitudeField = RequiredField(reader.Schema, "y");
+        var inspireIdField = RequiredField(reader.Schema, "INSPIREID_LOCALID");
+
+        for (var groupIndex = 0; groupIndex < reader.RowGroupCount; groupIndex++)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            using var group = reader.OpenRowGroupReader(groupIndex);
+            if (!MayContain(group.GetStatistics(communeField), municipality.Code)
+                || !MayContain(group.GetStatistics(sheetField), sheet))
+            {
+                continue;
+            }
+
+            var count = checked((int)group.RowCount);
+            var communes = new string[count];
+            var sheets = new string[count];
+            await group.ReadAsync(communeField, communes, cancellationToken: cancellationToken);
+            await group.ReadAsync(sheetField, sheets, cancellationToken: cancellationToken);
+
+            var matchingIndexes = Enumerable.Range(0, count)
+                .Where(index => string.Equals(communes[index], municipality.Code, StringComparison.OrdinalIgnoreCase)
+                    && string.Equals(sheets[index], sheet, StringComparison.OrdinalIgnoreCase))
+                .ToArray();
+
+            if (matchingIndexes.Length == 0)
+            {
+                continue;
+            }
+
+            var parcelValues = new string[count];
+            var inspireIds = new string[count];
+            var longitudes = new long[count];
+            var latitudes = new long[count];
+            await group.ReadAsync(parcelField, parcelValues, cancellationToken: cancellationToken);
+            await group.ReadAsync(inspireIdField, inspireIds, cancellationToken: cancellationToken);
+            await group.ReadAsync<long>(longitudeField, longitudes, cancellationToken: cancellationToken);
+            await group.ReadAsync<long>(latitudeField, latitudes, cancellationToken: cancellationToken);
+
+            foreach (var index in matchingIndexes)
+            {
+                var number = parcelValues[index];
+                if (string.IsNullOrWhiteSpace(number) || parcels.ContainsKey(number))
+                {
+                    continue;
+                }
+
+                parcels[number] = new ParcelOption(
+                    number,
+                    latitudes[index] / 1_000_000d,
+                    longitudes[index] / 1_000_000d,
+                    inspireIds[index] ?? string.Empty);
+            }
+        }
+
+        progress?.Report(new CatalogProgress($"Trovate {parcels.Count} particelle.", 1));
+        return parcels.Values.OrderBy(item => item.Number, NaturalStringComparer.Instance).ToArray();
+    }
+
+    private async Task<IReadOnlyList<MunicipalityOption>> GetAllMunicipalitiesAsync()
+    {
+        if (_municipalities is not null)
+        {
+            return _municipalities;
+        }
+
+        await using var stream = await FileSystem.Current.OpenAppPackageFileAsync("Data/municipalities.json");
+        _municipalities = await JsonSerializer.DeserializeAsync<List<MunicipalityOption>>(
+                stream,
+                new JsonSerializerOptions { PropertyNameCaseInsensitive = true })
+            ?? [];
+        return _municipalities;
+    }
+
+    private async Task<string> EnsureRegionFileAsync(
+        string dataFile,
+        IProgress<CatalogProgress>? progress,
+        CancellationToken cancellationToken)
+    {
+        var safeFileName = Path.GetFileName(dataFile);
+        var destination = Path.Combine(FileSystem.Current.CacheDirectory, $"catasto-{safeFileName}");
+        if (IsValidParquetFile(destination))
+        {
+            progress?.Report(new CatalogProgress("Uso il catalogo regionale salvato sul telefono.", 1));
+            return destination;
+        }
+
+        await _downloadLock.WaitAsync(cancellationToken);
+        try
+        {
+            if (IsValidParquetFile(destination))
+            {
+                return destination;
+            }
+
+            var temporary = destination + ".download";
+            if (File.Exists(temporary))
+            {
+                File.Delete(temporary);
+            }
+
+            using var response = await _httpClient.GetAsync(
+                DataBaseUrl + Uri.EscapeDataString(safeFileName),
+                HttpCompletionOption.ResponseHeadersRead,
+                cancellationToken);
+            response.EnsureSuccessStatusCode();
+            var total = response.Content.Headers.ContentLength;
+
+            await using var source = await response.Content.ReadAsStreamAsync(cancellationToken);
+            await using var target = new FileStream(temporary, FileMode.CreateNew, FileAccess.Write, FileShare.None, 128 * 1024, true);
+            var buffer = new byte[128 * 1024];
+            long downloaded = 0;
+            int read;
+            while ((read = await source.ReadAsync(buffer, cancellationToken)) > 0)
+            {
+                await target.WriteAsync(buffer.AsMemory(0, read), cancellationToken);
+                downloaded += read;
+                double? fraction = total > 0 ? (double)downloaded / total.Value : null;
+                var megabytes = downloaded / 1_048_576d;
+                progress?.Report(new CatalogProgress($"Scarico dati regionali: {megabytes:0.0} MB", fraction));
+            }
+
+            await target.FlushAsync(cancellationToken);
+            target.Close();
+            File.Move(temporary, destination, true);
+            return destination;
+        }
+        catch
+        {
+            var temporary = destination + ".download";
+            if (File.Exists(temporary))
+            {
+                File.Delete(temporary);
+            }
+            throw;
+        }
+        finally
+        {
+            _downloadLock.Release();
+        }
+    }
+
+    private static bool IsValidParquetFile(string path)
+    {
+        if (!File.Exists(path) || new FileInfo(path).Length < 12)
+        {
+            return false;
+        }
+
+        using var stream = File.OpenRead(path);
+        Span<byte> marker = stackalloc byte[4];
+        if (stream.Read(marker) != marker.Length || Encoding.ASCII.GetString(marker) != "PAR1")
+        {
+            return false;
+        }
+
+        stream.Seek(-4, SeekOrigin.End);
+        return stream.Read(marker) == marker.Length && Encoding.ASCII.GetString(marker) == "PAR1";
+    }
+
+    private static DataField RequiredField(ParquetSchema schema, string name) =>
+        schema.FindDataField(name) ?? throw new InvalidDataException($"Colonna catastale mancante: {name}");
+
+    private static bool MayContain(DataColumnStatistics? statistics, string wanted)
+    {
+        if (statistics is null)
+        {
+            return true;
+        }
+
+        var minimum = StatisticText(statistics.MinValue);
+        var maximum = StatisticText(statistics.MaxValue);
+        return minimum is null || maximum is null
+            || (string.Compare(wanted, minimum, StringComparison.OrdinalIgnoreCase) >= 0
+                && string.Compare(wanted, maximum, StringComparison.OrdinalIgnoreCase) <= 0);
+    }
+
+    private static string? StatisticText(object? value) => value switch
+    {
+        null => null,
+        string text => text,
+        byte[] bytes => Encoding.UTF8.GetString(bytes),
+        ReadOnlyMemory<byte> memory => Encoding.UTF8.GetString(memory.Span),
+        _ => value.ToString()
+    };
+
+    private static string RegionName(string dataFile)
+    {
+        var key = Path.GetFileNameWithoutExtension(dataFile);
+        return key switch
+        {
+            "01_Piemonte" => "Piemonte",
+            "02_ValledAosta" => "Valle d'Aosta",
+            "03_Lombardia" => "Lombardia",
+            "05_Veneto" => "Veneto",
+            "06_Friuli-VeneziaGiulia" => "Friuli-Venezia Giulia",
+            "07_Liguria" => "Liguria",
+            "08_Emilia-Romagna" => "Emilia-Romagna",
+            "09_Toscana" => "Toscana",
+            "10_Umbria" => "Umbria",
+            "11_Marche" => "Marche",
+            "12_Lazio" => "Lazio",
+            "13_Abruzzo" => "Abruzzo",
+            "14_Molise" => "Molise",
+            "15_Campania" => "Campania",
+            "16_Puglia" => "Puglia",
+            "17_Basilicata" => "Basilicata",
+            "18_Calabria" => "Calabria",
+            "19_Sicilia" => "Sicilia",
+            "20_Sardegna" => "Sardegna",
+            _ => key.Length > 3 ? key[3..] : key
+        };
+    }
+}
+
+public sealed record RegionOption(string Name, string DataFile);
+public sealed record MunicipalityOption(string Code, string Name, string DataFile);
+public sealed record ParcelOption(string Number, double Latitude, double Longitude, string InspireId);
+public sealed record CatalogProgress(string Message, double? Fraction);
+
+internal sealed class NaturalStringComparer : IComparer<string>
+{
+    public static NaturalStringComparer Instance { get; } = new();
+
+    public int Compare(string? left, string? right)
+    {
+        if (ReferenceEquals(left, right)) return 0;
+        if (left is null) return -1;
+        if (right is null) return 1;
+
+        var leftNumber = long.TryParse(left, out var leftValue);
+        var rightNumber = long.TryParse(right, out var rightValue);
+        if (leftNumber && rightNumber)
+        {
+            var numeric = leftValue.CompareTo(rightValue);
+            return numeric != 0 ? numeric : string.Compare(left, right, StringComparison.OrdinalIgnoreCase);
+        }
+
+        return string.Compare(left, right, StringComparison.CurrentCultureIgnoreCase);
+    }
+}

wwwroot/css/app.css

@@ -1,14 +1,32 @@
+:root {
+    --ink: #17212b;
+    --muted: #63717c;
+    --surface: #ffffff;
+    --panel: #f4f6f7;
+    --line: #d6dde2;
+    --accent: #14705e;
+    --accent-strong: #0c5749;
+    --warning: #a34b08;
+    --nav-height: 64px;
+}
+
 html,
 body,
 #app,
-.app-shell {
+.app-shell,
+.map-app,
+.map-stage {
     width: 100%;
     height: 100%;
     margin: 0;
     overflow: hidden;
+}
+
+html,
+body {
     font-family: Inter, "Segoe UI", Arial, sans-serif;
-    background: #101820;
+    background: #d8e0e4;
-    color: #17212b;
+    color: var(--ink);
 }
 
 button,
@@ -18,28 +36,32 @@ select {
 }
 
 button {
-    min-height: 38px;
+    min-height: 42px;
     border: 0;
     border-radius: 6px;
-    padding: 0 12px;
+    padding: 0 14px;
-    background: #176b87;
+    background: var(--accent);
     color: #fff;
     font-weight: 700;
 }
 
-button:active {
+button:active:not(:disabled) {
     transform: translateY(1px);
 }
 
+button:disabled {
+    opacity: 0.48;
+}
+
 input,
 select {
     width: 100%;
-    min-height: 38px;
+    min-height: 44px;
-    border: 1px solid #c8d3dc;
+    border: 1px solid #bfcbd2;
     border-radius: 6px;
-    padding: 0 10px;
+    padding: 0 11px;
     background: #fff;
-    color: #17212b;
+    color: var(--ink);
 }
 
 input[type="range"],
@@ -47,35 +69,161 @@ input[type="checkbox"] {
     min-height: auto;
 }
 
-.map-app {
+.map-stage {
-    display: grid;
+    position: relative;
-    grid-template-columns: 390px minmax(0, 1fr);
-    width: 100%;
-    height: 100%;
 }
 
-.tool-panel {
+#map {
-    z-index: 800;
+    position: absolute;
+    inset: 0;
+    background: #d8e0e4;
+}
+
+.map-toolbar {
+    position: absolute;
+    top: 12px;
+    left: 12px;
+    right: 12px;
+    z-index: 900;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+    min-height: 52px;
+    padding: 7px 8px 7px 13px;
+    border: 1px solid rgba(255, 255, 255, 0.54);
+    border-radius: 8px;
+    background: rgba(22, 31, 38, 0.9);
+    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.22);
+    color: #fff;
+}
+
+.app-identity {
+    display: flex;
+    align-items: baseline;
+    gap: 10px;
+    min-width: 0;
+}
+
+.app-identity strong {
+    font-size: 18px;
+    white-space: nowrap;
+}
+
+.app-identity span {
+    overflow: hidden;
+    color: #bfe6dc;
+    font-size: 12px;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.toolbar-button {
+    min-height: 38px;
+    background: #fff;
+    color: var(--ink);
+}
+
+.map-search {
+    position: absolute;
+    top: 72px;
+    left: 12px;
+    right: 12px;
+    z-index: 890;
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto;
+    gap: 8px;
+    max-width: 640px;
+    padding: 8px;
+    border-radius: 8px;
+    background: rgba(255, 255, 255, 0.96);
+    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.22);
+    opacity: 0;
+    pointer-events: none;
+    transform: translateY(-8px);
+    transition: opacity 140ms ease, transform 140ms ease;
+}
+
+.map-search.is-open {
+    opacity: 1;
+    pointer-events: auto;
+    transform: translateY(0);
+}
+
+.gps-overlay {
+    position: absolute;
+    right: 12px;
+    bottom: 78px;
+    z-index: 850;
+    display: grid;
+    grid-template-columns: minmax(160px, auto) auto auto;
+    align-items: center;
+    gap: 7px;
+    max-width: calc(100% - 24px);
+    padding: 7px;
+    border-radius: 8px;
+    background: rgba(255, 255, 255, 0.95);
+    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.2);
+}
+
+.gps-state {
+    display: grid;
+    min-width: 0;
+    padding: 0 6px;
+    font-size: 11px;
+}
+
+.gps-state span,
+.gps-state strong {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.gps-state strong {
+    color: #a33227;
+}
+
+.gps-main,
+.gps-center {
+    min-height: 38px;
+    padding: 0 10px;
+    white-space: nowrap;
+}
+
+.gps-center {
+    background: #e7ecef;
+    color: var(--ink);
+}
+
+.tool-sheet {
+    position: absolute;
+    top: 0;
+    bottom: var(--nav-height);
+    left: 0;
+    z-index: 1100;
     display: flex;
     flex-direction: column;
-    gap: 12px;
+    width: min(430px, calc(100% - 48px));
-    overflow-y: auto;
+    border-right: 1px solid var(--line);
-    padding: 16px;
+    background: var(--panel);
-    background: #f6f8f9;
+    box-shadow: 7px 0 24px rgba(0, 0, 0, 0.24);
-    border-right: 1px solid #d8e0e6;
 }
 
-.brand {
+.sheet-header {
     display: flex;
     align-items: flex-start;
     justify-content: space-between;
-    gap: 12px;
+    gap: 14px;
+    padding: 18px 16px 13px;
+    border-bottom: 1px solid var(--line);
+    background: #fff;
 }
 
 .eyebrow {
-    margin: 0 0 3px;
+    margin: 0 0 4px;
-    color: #667785;
+    color: var(--muted);
-    font-size: 12px;
+    font-size: 11px;
     font-weight: 800;
     text-transform: uppercase;
 }
@@ -88,74 +236,68 @@ p {
 
 h1 {
     margin-bottom: 0;
-    font-size: 25px;
+    font-size: 22px;
-    line-height: 1.08;
+    line-height: 1.12;
 }
 
 h2 {
-    margin-bottom: 10px;
+    margin: 10px 0 2px;
     font-size: 15px;
 }
 
-.status {
+.close-button {
-    border-radius: 999px;
+    width: 42px;
-    padding: 5px 9px;
+    min-width: 42px;
-    background: #dff5e5;
+    padding: 0;
-    color: #166534;
+    background: #e9eef0;
-    font-size: 12px;
+    color: var(--ink);
-    font-weight: 800;
+    font-size: 27px;
+    line-height: 1;
 }
 
-.panel-section {
+.panel-content {
-    padding: 12px;
-    border: 1px solid #dbe4ea;
-    border-radius: 8px;
-    background: #fff;
-}
-
-.input-row,
-.button-row {
-    display: flex;
-    gap: 8px;
-}
-
-.input-row input {
-    min-width: 0;
-}
-
-.field-grid {
     display: grid;
-    grid-template-columns: 1fr 1fr;
+    gap: 12px;
-    gap: 10px;
+    overflow-y: auto;
-}
+    padding: 15px 16px 24px;
-
-.field-grid.compact {
-    grid-template-columns: 1fr;
 }
 
 label {
     display: grid;
     gap: 5px;
-    color: #475866;
+    color: #45545f;
     font-size: 12px;
     font-weight: 800;
 }
 
-.hint {
+.button-row {
-    margin: 10px 0 0;
+    display: flex;
-    color: #667785;
+    gap: 8px;
-    font-size: 12px;
+}
-    line-height: 1.35;
+
+.button-row > * {
+    flex: 1;
+}
+
+.primary-command,
+.secondary-command {
+    width: 100%;
+}
+
+.secondary-command {
+    border: 1px solid #b9c7ce;
+    background: #fff;
+    color: var(--ink);
 }
 
 .file-picker {
     position: relative;
-    min-height: 42px;
+    min-height: 52px;
     place-items: center;
-    border: 1px dashed #93a7b5;
+    border: 1px dashed #7e969f;
     border-radius: 8px;
-    background: #f2f7fa;
+    background: #fff;
-    color: #176b87;
+    color: var(--accent-strong);
     cursor: pointer;
 }
 
@@ -166,120 +308,199 @@ label {
     cursor: pointer;
 }
 
+.catalog-progress,
+.service-note {
+    display: grid;
+    gap: 7px;
+    padding: 11px;
+    border: 1px solid #c7dce0;
+    border-radius: 8px;
+    background: #edf7f5;
+    color: #24443e;
+    font-size: 12px;
+    line-height: 1.4;
+}
+
+.catalog-progress progress {
+    width: 100%;
+    accent-color: var(--accent);
+}
+
+.service-note p {
+    margin-bottom: 0;
+}
+
+.protected-service {
+    border-color: #ead4b9;
+    background: #fff7ea;
+    color: #5d4024;
+}
+
 .layer-toggles {
     display: grid;
     grid-template-columns: 1fr 1fr;
-    gap: 8px;
+    gap: 9px;
-    margin-top: 10px;
+    padding: 4px 0;
 }
 
 .layer-toggles label,
 .toggle-line {
     display: flex;
     align-items: center;
-    gap: 7px;
+    gap: 8px;
 }
 
-.gps-readout {
+.layer-toggles input,
-    display: grid;
+.toggle-line input {
-    gap: 6px;
+    width: 18px;
-    margin-bottom: 10px;
+    height: 18px;
-    padding: 10px;
-    border-radius: 8px;
-    background: #eef6ff;
-    color: #21405d;
-    font-size: 13px;
-}
-
-.gps-readout strong {
-    color: #b91c1c;
-}
-
-.map-stage {
-    position: relative;
-    min-width: 0;
-    height: 100%;
-}
-
-#map {
-    width: 100%;
-    height: 100%;
-    background: #d4dde3;
 }
 
 .map-info {
     position: absolute;
-    left: 14px;
+    left: 12px;
-    right: 14px;
+    bottom: 76px;
-    bottom: 14px;
+    z-index: 820;
-    z-index: 700;
+    max-width: min(620px, calc(100% - 460px));
-    max-width: 760px;
     border-radius: 8px;
-    padding: 10px 12px;
+    padding: 9px 11px;
-    background: rgba(16, 24, 32, 0.86);
+    background: rgba(22, 31, 38, 0.88);
     color: #fff;
-    font-size: 13px;
+    font-size: 12px;
     pointer-events: none;
 }
 
-footer {
+.bottom-tabs {
-    color: #667785;
+    position: absolute;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    z-index: 1200;
+    display: grid;
+    grid-template-columns: repeat(4, minmax(0, 1fr));
+    height: var(--nav-height);
+    padding-bottom: env(safe-area-inset-bottom);
+    border-top: 1px solid #bcc7cd;
+    background: rgba(255, 255, 255, 0.98);
+}
+
+.bottom-tabs button {
+    min-width: 0;
+    min-height: 0;
+    border-radius: 0;
+    padding: 0 5px;
+    background: transparent;
+    color: #52616c;
     font-size: 12px;
-    line-height: 1.35;
+}
+
+.bottom-tabs button.active {
+    box-shadow: inset 0 3px 0 var(--accent);
+    color: var(--accent-strong);
+}
+
+footer {
+    margin-top: 4px;
+    color: var(--muted);
+    font-size: 11px;
+    line-height: 1.4;
+}
+
+.leaflet-bottom {
+    bottom: calc(var(--nav-height) + 6px);
 }
 
 #blazor-error-ui {
-    background: #fff3cd;
-    bottom: 0;
-    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
-    display: none;
-    left: 0;
-    padding: 0.7rem 1.25rem;
     position: fixed;
-    width: 100%;
+    right: 8px;
-    z-index: 1000;
+    bottom: calc(var(--nav-height) + 8px);
+    left: 8px;
+    z-index: 2000;
+    display: none;
+    border: 1px solid #e4be77;
+    border-radius: 8px;
+    padding: 10px 42px 10px 12px;
+    background: #fff3cd;
+    color: #5f4614;
 }
 
 #blazor-error-ui .dismiss {
-    cursor: pointer;
     position: absolute;
-    right: 0.75rem;
+    top: 7px;
-    top: 0.5rem;
+    right: 10px;
+    cursor: pointer;
 }
 
 .status-bar-safe-area {
     display: none;
 }
 
-@media (max-width: 850px) {
+@media (max-width: 700px) {
-    .map-app {
+    .map-toolbar {
-        grid-template-columns: 1fr;
+        top: 8px;
-        grid-template-rows: 45% 55%;
+        left: 8px;
+        right: 8px;
     }
 
-    .tool-panel {
+    .map-search {
-        border-right: 0;
+        top: 68px;
-        border-bottom: 1px solid #d8e0e6;
+        left: 8px;
-        padding: 12px;
+        right: 8px;
     }
 
-    .brand {
+    .tool-sheet {
-        align-items: center;
+        top: 10%;
-    }
+        bottom: var(--nav-height);
-
-    h1 {
-        font-size: 22px;
-    }
-}
-
-@supports (-webkit-touch-callout: none) {
-    .status-bar-safe-area {
-        display: flex;
-        position: sticky;
-        top: 0;
-        height: env(safe-area-inset-top);
-        background-color: #f6f8f9;
         width: 100%;
-        z-index: 1;
+        border-top: 1px solid var(--line);
+        border-right: 0;
+        border-radius: 8px 8px 0 0;
+        box-shadow: 0 -7px 24px rgba(0, 0, 0, 0.24);
+    }
+
+    .gps-overlay {
+        right: 8px;
+        bottom: 116px;
+        left: 8px;
+        grid-template-columns: minmax(0, 1fr) auto auto;
+        max-width: none;
+    }
+
+    .gps-main,
+    .gps-center {
+        padding: 0 8px;
+        font-size: 11px;
+    }
+
+    .map-info {
+        right: 8px;
+        bottom: 72px;
+        left: 8px;
+        max-width: none;
+        overflow: hidden;
+        text-overflow: ellipsis;
+        white-space: nowrap;
+    }
+
+    .bottom-tabs button {
+        font-size: 11px;
+    }
+}
+
+@media (max-width: 380px) {
+    .app-identity span {
+        display: none;
+    }
+
+    .gps-state {
+        min-width: 0;
+    }
+
+    .gps-center {
+        display: none;
+    }
+
+    .bottom-tabs button {
+        font-size: 10px;
     }
 }

wwwroot/js/lme-map.js

@@ -18,14 +18,14 @@ const lmeState = {
     lastPosition: null,
     lastWfsLookupAt: 0,
     wfsLookupInFlight: false,
-    duckDb: null,
+    fileImportBound: false,
-    duckDbConnection: null
+    resizeBound: false
 };
 
 window.lmeMap = {
     init,
     search,
-    locateParcelArea,
+    locateParcelByPoint,
     exportCadastreView,
     fitImported,
     clearImported,
@@ -41,7 +41,9 @@ window.lmeMap = {
     centerOnGps,
     toggleTrail,
     setNativeGpsPosition,
-    setGpsError
+    setGpsError,
+    resize,
+    showInfo: setInfo
 };
 
 function init() {
@@ -74,6 +76,12 @@ function init() {
     refreshCadastreLayer();
     bindFileImport();
 
+    if (!lmeState.resizeBound) {
+        window.addEventListener("resize", resize);
+        window.addEventListener("orientationchange", resize);
+        lmeState.resizeBound = true;
+    }
+
     lmeState.map.on("click", async event => {
         const info = await queryFeatureInfo(event.latlng);
         if (info) {
@@ -112,36 +120,30 @@ async function search(text) {
     setInfo(place.display_name);
 }
 
-async function locateParcelArea(region, municipality, municipalityCode, sheet, parcel, label) {
+async function locateParcelByPoint(latitude, longitude, parcel, label) {
-    if (!sheet || !parcel || (!municipality && !municipalityCode)) {
+    const lat = Number(latitude);
-        setInfo("Inserisci Comune o codice catastale, Foglio e Particella.");
+    const lon = Number(longitude);
+    if (!Number.isFinite(lat) || !Number.isFinite(lon)) {
+        setInfo("Coordinate della particella non valide.");
         return;
     }
 
-    setInfo("Cerco la particella nell'indice catastale...");
+    setInfo(`Recupero il confine ufficiale: ${label}`);
     try {
-        const match = await findParcelIndexPoint(region, municipality, municipalityCode, sheet, parcel);
-        if (!match) {
-            const query = [municipality, region, "Italia"].filter(Boolean).join(", ");
-            await search(query);
-            setInfo("Particella non trovata nell'indice. Ho aperto il Comune: usa tap/GPS per interrogare AdE.");
-            return;
-        }
-
         const meters = 8;
         const deltaLat = meters / 111320;
-        const deltaLon = meters / (111320 * Math.cos(match.lat * Math.PI / 180));
+        const deltaLon = meters / (111320 * Math.cos(lat * Math.PI / 180));
-        const geojson = await fetchOfficialParcelsByBbox(match.lat - deltaLat, match.lon - deltaLon, match.lat + deltaLat, match.lon + deltaLon);
+        const geojson = await fetchOfficialParcelsByBbox(lat - deltaLat, lon - deltaLon, lat + deltaLat, lon + deltaLon);
         const normalizedParcel = normalizeParcel(parcel);
         const feature = (geojson.features || []).find(item => {
             const props = item.properties || {};
             return String(props.LABEL || "").trim().toUpperCase() === normalizedParcel.toUpperCase()
                 || String(props.NATIONALCADASTRALREFERENCE || "").toUpperCase().endsWith(`.${normalizedParcel.toUpperCase()}`);
-        }) || (geojson.features || []).find(item => geometryContainsPoint(item.geometry, [match.lon, match.lat])) || geojson.features?.[0];
+        }) || (geojson.features || []).find(item => geometryContainsPoint(item.geometry, [lon, lat])) || geojson.features?.[0];
 
         if (!feature) {
-            lmeState.map.setView([match.lat, match.lon], 20);
+            lmeState.map.setView([lat, lon], 20);
-            setInfo("Punto interno trovato, ma il WFS AdE non ha restituito il poligono in quel momento.");
+            setInfo("Posizione trovata, ma il servizio WFS dell'Agenzia non ha restituito il confine. Riprova tra poco.");
             return;
         }
 
@@ -151,125 +153,25 @@ async function locateParcelArea(region, municipality, municipalityCode, sheet, p
         }).addTo(lmeState.currentParcelLayer);
         fitLayer(layer);
 
-        const ref = feature.properties?.NATIONALCADASTRALREFERENCE || feature.properties?.INSPIREID_LOCALID || `${match.comune}_${match.foglio}.${match.particella}`;
+        const ref = feature.properties?.NATIONALCADASTRALREFERENCE || feature.properties?.INSPIREID_LOCALID || label;
         setText("parcelState", `Particella selezionata: ${ref}`);
         setInfo(`Trovata ${ref}. Ora puoi attivare il GPS e camminare dentro il confine evidenziato.`);
     } catch (error) {
-        setInfo(`Ricerca catastale non completata: ${error.message}`);
+        setInfo(`Servizio catastale temporaneamente non disponibile: ${error.message}`);
     }
 }
 
-async function findParcelIndexPoint(region, municipality, municipalityCode, sheet, parcel) {
-    const conn = await getDuckDbConnection();
-    const code = (municipalityCode || "").trim().toUpperCase();
-    const name = (municipality || "").trim().toUpperCase().replaceAll("'", "''");
-    const normalizedSheet = normalizeSheet(sheet);
-    const normalizedParcel = normalizeParcel(parcel).replaceAll("'", "''");
-
-    let indexWhere = "";
-    if (code) {
-        indexWhere = `comune = '${code.replaceAll("'", "''")}'`;
-    } else {
-        indexWhere = `upper(DENOMINAZIONE_IT) = '${name}'`;
-    }
-
-    const indexUrl = "https://raw.githubusercontent.com/ondata/dati_catastali/main/S_0000_ITALIA/anagrafica/index.parquet";
-    const indexRows = await queryDuckDb(conn, `
-        SELECT comune, file, DENOMINAZIONE_IT
-        FROM '${indexUrl}'
-        WHERE ${indexWhere}
-        LIMIT 5
-    `);
-
-    if (!indexRows.length) {
-        return null;
-    }
-
-    const row = chooseMunicipalityRow(indexRows, region);
-    const dataUrl = `https://raw.githubusercontent.com/ondata/dati_catastali/main/S_0000_ITALIA/anagrafica/${row.file}`;
-    const parcelRows = await queryDuckDb(conn, `
-        SELECT INSPIREID_LOCALID, comune, foglio, particella, x, y
-        FROM '${dataUrl}'
-        WHERE comune = '${row.comune}'
-          AND foglio = '${normalizedSheet}'
-          AND upper(particella) = upper('${normalizedParcel}')
-        LIMIT 1
-    `);
-
-    if (!parcelRows.length) {
-        return null;
-    }
-
-    const parcelRow = parcelRows[0];
-    return {
-        inspireId: parcelRow.INSPIREID_LOCALID,
-        comune: parcelRow.comune,
-        foglio: parcelRow.foglio,
-        particella: parcelRow.particella,
-        lon: Number(parcelRow.x) / 1000000,
-        lat: Number(parcelRow.y) / 1000000
-    };
-}
-
-function chooseMunicipalityRow(rows, region) {
-    const wanted = (region || "").trim().toUpperCase();
-    if (!wanted) {
-        return rows[0];
-    }
-    return rows.find(row => String(row.file || "").toUpperCase().includes(wanted)) || rows[0];
-}
-
-async function getDuckDbConnection() {
-    if (lmeState.duckDbConnection) {
-        return lmeState.duckDbConnection;
-    }
-
-    const duckdb = await import("https://cdn.jsdelivr.net/npm/@duckdb/duckdb-wasm/+esm");
-    const bundles = duckdb.getJsDelivrBundles();
-    const bundle = await duckdb.selectBundle(bundles);
-    const workerUrl = URL.createObjectURL(new Blob([`importScripts("${bundle.mainWorker}");`], { type: "text/javascript" }));
-    const worker = new Worker(workerUrl);
-    const logger = new duckdb.ConsoleLogger();
-    const db = new duckdb.AsyncDuckDB(logger, worker);
-    await db.instantiate(bundle.mainModule, bundle.pthreadWorker);
-    URL.revokeObjectURL(workerUrl);
-    const conn = await db.connect();
-
-    try {
-        await conn.query("INSTALL httpfs; LOAD httpfs;");
-    } catch {
-        // Some DuckDB-WASM bundles already include HTTP support.
-    }
-
-    lmeState.duckDb = db;
-    lmeState.duckDbConnection = conn;
-    return conn;
-}
-
-async function queryDuckDb(conn, sql) {
-    const table = await conn.query(sql);
-    return table.toArray().map(row => {
-        if (typeof row.toJSON === "function") {
-            return row.toJSON();
-        }
-
-        const output = {};
-        for (const key of Object.keys(row)) {
-            output[key] = row[key];
-        }
-        return output;
-    });
-}
-
-function normalizeSheet(sheet) {
-    const value = String(sheet || "").trim().toUpperCase();
-    return /^\d+$/.test(value) ? value.padStart(4, "0") : value;
-}
-
 function normalizeParcel(parcel) {
     return String(parcel || "").trim().toUpperCase();
 }
 
+function resize() {
+    if (!lmeState.map) {
+        return;
+    }
+    window.setTimeout(() => lmeState.map.invalidateSize({ pan: false }), 50);
+}
+
 function exportCadastreView() {
     const center = lmeState.map.getCenter();
     const zoom = lmeState.map.getZoom();
@@ -280,12 +182,15 @@ function exportCadastreView() {
 }
 
 function bindFileImport() {
-    const input = document.getElementById("gisFileInput");
+    if (lmeState.fileImportBound) {
-    if (!input) {
+        return;
+    }
+
+    document.addEventListener("change", async event => {
+        if (event.target?.id !== "gisFileInput") {
             return;
         }
 
-    input.addEventListener("change", async event => {
         const file = event.target.files?.[0];
         if (!file) {
             return;
@@ -308,6 +213,7 @@ function bindFileImport() {
             setInfo(`File non leggibile: ${error.message}`);
         }
     });
+    lmeState.fileImportBound = true;
 }
 
 async function readGisFile(file) {
@@ -596,6 +502,8 @@ async function updateOfficialParcelFromPoint(latitude, longitude, accuracy) {
 
         const ref = feature.properties?.NATIONALCADASTRALREFERENCE || feature.properties?.INSPIREID_LOCALID || feature.properties?.LABEL || "particella AdE";
         setText("parcelState", `Dentro particella AdE: ${ref}`);
+    } catch (error) {
+        setInfo(`Aggiornamento particella GPS non disponibile: ${error.message}`);
     } finally {
         lmeState.wfsLookupInFlight = false;
     }