Initial commit: FieldLogger MAUI app with Maglink BLE support

Added Maglink RTK GNSS receiver integration with correct BLE UUIDs and device name filtering (ML-* prefix). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
2026-07-06 13:46:50 -05:00
commit b602b762c9
79 changed files with 5807 additions and 0 deletions
--- a/FieldLogger/ViewModels/DeviceScanViewModel.cs
+++ b/FieldLogger/ViewModels/DeviceScanViewModel.cs
@@ -0,0 +1,107 @@
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using FieldLogger.Models;
+using FieldLogger.Services;
+using FieldLogger.Services.Ble;
+
+namespace FieldLogger.ViewModels;
+
+[QueryProperty(nameof(KindName), "kind")]
+public sealed partial class DeviceScanViewModel : ObservableObject
+{
+    private readonly BleScanner _scanner;
+    private readonly DeviceConnectionManager _manager;
+    private CancellationTokenSource? _scanCts;
+
+    [ObservableProperty]
+    private string _kindName = nameof(DeviceKind.Locator);
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ScanButtonText))]
+    private bool _isScanning;
+
+    [ObservableProperty]
+    private string _title = "Select Device";
+
+    [ObservableProperty]
+    private string _hint = "";
+
+    public ObservableCollection<DiscoveredDevice> Devices { get; } = new();
+
+    public DeviceKind Kind => Enum.TryParse<DeviceKind>(KindName, out var k) ? k : DeviceKind.Locator;
+
+    public string ScanButtonText => IsScanning ? "Scanning…" : "Scan Again";
+
+    public DeviceScanViewModel(BleScanner scanner, DeviceConnectionManager manager)
+    {
+        _scanner = scanner;
+        _manager = manager;
+        _scanner.DeviceDiscovered += OnDeviceDiscovered;
+    }
+
+    partial void OnKindNameChanged(string value)
+    {
+        Title = Kind == DeviceKind.Locator ? "Select Locating Receiver" : "Select RTK GPS Receiver";
+        Hint = Kind == DeviceKind.Locator
+            ? "Looking for UM receivers (UMRX / DT100). Make sure Bluetooth is enabled on the receiver."
+            : "Looking for Maglink RTK receivers. Make sure the receiver is powered on.";
+    }
+
+    [RelayCommand]
+    public async Task ScanAsync()
+    {
+        if (IsScanning)
+            return;
+
+        Devices.Clear();
+        IsScanning = true;
+        _scanCts = new CancellationTokenSource();
+        try
+        {
+            await _scanner.ScanAsync(TimeSpan.FromSeconds(12), _scanCts.Token);
+        }
+        catch (Exception ex)
+        {
+            await Shell.Current.DisplayAlert("Scan Failed", ex.Message, "OK");
+        }
+        finally
+        {
+            IsScanning = false;
+            _scanCts?.Dispose();
+            _scanCts = null;
+        }
+    }
+
+    public void StopScan() => _scanCts?.Cancel();
+
+    [RelayCommand]
+    private async Task SelectAsync(DiscoveredDevice device)
+    {
+        StopScan();
+        await _manager.UseDeviceAsync(Kind, device.Id, device.Name);
+        await Shell.Current.GoToAsync("..");
+    }
+
+    private void OnDeviceDiscovered(object? sender, DiscoveredDevice device)
+    {
+        // Filter by device name prefix based on device type.
+        if (Kind == DeviceKind.Locator && !UmReceiverService.IsUmReceiverName(device.Name))
+            return;
+        if (Kind == DeviceKind.Maglink && !MaglinkService.IsMaglinkName(device.Name))
+            return;
+
+        MainThread.BeginInvokeOnMainThread(() =>
+        {
+            var existing = Devices.FirstOrDefault(d => d.Id == device.Id);
+            if (existing is not null)
+                Devices.Remove(existing);
+
+            // Keep the list sorted by signal strength.
+            var index = 0;
+            while (index < Devices.Count && Devices[index].Rssi >= device.Rssi)
+                index++;
+            Devices.Insert(index, device);
+        });
+    }
+}