Soft-LTS/Monitors/CabSquixMonitor.cs

using PrinterMonitor.Configuration;
using PrinterMonitor.Interfaces;
using PrinterMonitor.Models;

namespace PrinterMonitor.Monitors;

/// <summary>
/// IPrinterMonitor-Implementierung für CAB Squix Drucker via OPC UA.
/// Liest nur die drei überwachten Zustände.
/// </summary>
public class CabSquixMonitor : IPrinterMonitor
{
    private readonly PrinterConfig _config;
    private SquixOpcUaClient? _client;

    public string PrinterName => _config.Name;
    public bool IsConnected => _client?.IsConnected == true;

    public CabSquixMonitor(PrinterConfig config)
    {
        _config = config;
    }

    public async Task ConnectAsync(CancellationToken ct = default)
    {
        _client = new SquixOpcUaClient(_config.Host, _config.Port);
        await _client.ConnectAsync(ct);
    }

    public async Task DisconnectAsync()
    {
        if (_client != null)
        {
            await _client.DisposeAsync();
            _client = null;
        }
    }

    public async Task<SimplePrinterState> PollStateAsync(CancellationToken ct = default)
    {
        if (_client == null || !_client.IsConnected)
            throw new InvalidOperationException("Nicht verbunden");

        var (lts, printhead, paperLow) = await _client.ReadAllSensorsAsync(ct);

        return new SimplePrinterState
        {
            LtsSensor = lts,
            Druckerklappe = printhead,
            KeineEtiketten = paperLow
        };
    }

    public async ValueTask DisposeAsync()
    {
        await DisconnectAsync();
    }
}