using ScrapperAPI.Dtos;

namespace ScrapperAPI.Interfaces;

public interface IQueueRepository
{
    Task<int> EnqueueAsync(int sessionId, string url, CancellationToken ct);
    Task<QueueCounts> GetCountsAsync(int sessionId, CancellationToken ct);

    /// <summary>
    /// Pega 1 item pendente e muda para Processing atomica/seguramente.
    /// Retorna null se não houver itens pendentes.
    /// </summary>
    Task<QueueItem?> TryDequeueAsync(int sessionId, CancellationToken ct);

    Task MarkDoneAsync(int queueId, CancellationToken ct);
    Task MarkFailedAsync(int queueId, string error, CancellationToken ct);

    // Opcional: resetar stuck processing (se quiser depois)
    Task<int> RequeueStuckProcessingAsync(int sessionId, TimeSpan olderThan, CancellationToken ct);
    
    Task<bool> RemovePendingByIdAsync(int sessionId, int queueId, CancellationToken ct);
    Task<int> RemovePendingByUrlAsync(int sessionId, string url, CancellationToken ct);

    /// <summary>
    /// Lista IDs da fila por sessão e status (ex.: status=2 -> DONE).
    /// </summary>
    Task<IReadOnlyList<int>> ListQueueIdsAsync(int sessionId, IReadOnlyCollection<short>? statuses, CancellationToken ct);
}