namespace Web.Services;

using Microsoft.JSInterop;

public class NetworkStatusService : IAsyncDisposable, IDisposable
{
    private readonly IJSRuntime _jsRuntime;
    private DotNetObjectReference<NetworkStatusService>? _dotNetRef;
    private bool _isOnline = true;
    private bool _initialized;

    public event Action<bool>? StatusChanged;

    public bool IsOnline => _isOnline;

    public NetworkStatusService(IJSRuntime jsRuntime)
    {
        _jsRuntime = jsRuntime;
    }

    public async Task InitializeAsync()
    {
        if (_initialized) return;
        _initialized = true;

        try
        {
            _dotNetRef = DotNetObjectReference.Create(this);
            _isOnline = await _jsRuntime.InvokeAsync<bool>("networkStatus.initialize", _dotNetRef);
            StatusChanged?.Invoke(_isOnline);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"[NetworkStatusService] Failed to initialize: {ex.Message}");
        }
    }

    [JSInvokable]
    public void SetOnlineStatus(bool isOnline)
    {
        if (_isOnline != isOnline)
        {
            _isOnline = isOnline;
            StatusChanged?.Invoke(_isOnline);
        }
    }

    public void Dispose()
    {
        _dotNetRef?.Dispose();
        _dotNetRef = null;
    }

    public async ValueTask DisposeAsync()
    {
        if (_dotNetRef != null)
        {
            try
            {
                await _jsRuntime.InvokeVoidAsync("networkStatus.dispose");
            }
            catch
            {
                // Ignore disposal errors
            }
            _dotNetRef.Dispose();
        }
    }
}