using ScadaLink.DataConnectionLayer.Adapters;

namespace LmxFakeProxy.Tests;

/// <summary>
/// End-to-end smoke test connecting RealLmxProxyClient to LmxFakeProxy.
/// Requires both OPC UA test server and LmxFakeProxy to be running.
/// Run manually: dotnet test --filter "Category=Integration"
/// </summary>
[Trait("Category", "Integration")]
public class IntegrationSmokeTest
{
    private const string Host = "localhost";
    private const int Port = 50051;

    [Fact]
    public async Task ConnectReadWriteSubscribe_EndToEnd()
    {
        var factory = new RealLmxProxyClientFactory();
        var client = factory.Create(Host, Port, null);

        try
        {
            // Connect
            await client.ConnectAsync();
            Assert.True(client.IsConnected);

            // Read initial value
            var vtq = await client.ReadAsync("Motor.Speed");
            Assert.Equal(LmxQuality.Good, vtq.Quality);

            // Write a value
            await client.WriteAsync("Motor.Speed", 42.5);

            // Read back
            var vtq2 = await client.ReadAsync("Motor.Speed");
            Assert.Equal(42.5, (double)vtq2.Value!);

            // ReadBatch
            var batch = await client.ReadBatchAsync(new[] { "Motor.Speed", "Pump.FlowRate" });
            Assert.Equal(2, batch.Count);

            // Subscribe briefly
            LmxVtq? lastUpdate = null;
            var sub = await client.SubscribeAsync(
                new[] { "Motor.Speed" },
                (tag, v) => lastUpdate = v);

            // Write to trigger subscription update
            await client.WriteAsync("Motor.Speed", 99.0);
            await Task.Delay(2000);

            await sub.DisposeAsync();
            Assert.NotNull(lastUpdate);

            // Disconnect
            await client.DisconnectAsync();
        }
        finally
        {
            await client.DisposeAsync();
        }
    }
}