using Big.Application;
using Microsoft.Extensions.Logging;

namespace Big.Infrastructure;

/// <summary>
/// One poll tick of the document-timeout worker (S-10a, ADR-0017): acquire the parked
/// <c>RegistratieVerlopen</c> jobs — the tokens the 30-day boundary timer on <c>WachtOpDocumenten</c>
/// spawns — expire each correlated registration via the <see cref="ExpireRegistrationWorker"/>, and
/// complete the job so its token reaches <c>endVerlopen</c>. A job that fails is logged and left
/// un-completed so Flowable redelivers it (§8.6). Split out from the hosted pump so the
/// acquire→expire→complete logic is unit-testable without a running host. Mirrors
/// <see cref="OpenZaakJobProcessor"/> and <see cref="BeoordelingEscalatieProcessor"/>.
/// </summary>
public sealed class RegistratieVerlopenProcessor(
    IRegistratieVerlopenClient client,
    ExpireRegistrationWorker worker,
    ILogger<RegistratieVerlopenProcessor> logger)
{
    /// <summary>Acquire and process up to <paramref name="maxJobs"/> jobs. Returns the number acquired.</summary>
    public async Task<int> PumpOnceAsync(int maxJobs, CancellationToken ct = default)
    {
        var jobs = await client.AcquireRegistratieVerlopenJobsAsync(maxJobs, ct);

        foreach (var job in jobs)
        {
            try
            {
                await worker.HandleAsync(job, ct);
                await client.CompleteRegistratieVerlopenJobAsync(job.JobId, ct);
            }
            catch (Exception ex)
            {
                // Leave the job un-completed: its lock expires and Flowable redelivers it (§8.6).
                logger.LogError(ex, "RegistratieVerlopen job {JobId} failed; leaving it for redelivery.", job.JobId);
            }
        }

        return jobs.Count;
    }
}