using FieldLogger.Models;

namespace FieldLogger.Services.Sync;

/// <summary>
/// Durable app MQTT synchronization. Captures are persisted locally before this service queues
/// them, and queue rows are released only by an application-level ACCEPTED/DUPLICATE ack.
/// </summary>
public interface IMqttSyncService
{
    bool IsConnected { get; }
    string Status { get; }
    event EventHandler<string>? StatusChanged;
    event EventHandler<PointSyncFailureEventArgs>? PointRejected;
    Task StartAsync(CancellationToken cancellationToken = default);
    Task StopAsync();
    Task ConnectAsync(CancellationToken cancellationToken = default);
    Task DisconnectAsync();
    Task PublishPointAsync(LoggedPoint point, CancellationToken cancellationToken = default);
}

public sealed class PointSyncFailureEventArgs : EventArgs
{
    public LoggedPoint Point { get; }
    public string ReasonCode { get; }

    public PointSyncFailureEventArgs(LoggedPoint point, string reasonCode)
    {
        Point = point;
        ReasonCode = reasonCode;
    }
}