namespace MeetingAssistant.MeetingNotes;

public interface IMeetingMetadataProvider
{
    Task<MeetingMetadata?> GetCurrentMeetingAsync(
        DateTimeOffset startedAt,
        CancellationToken cancellationToken);
}

public interface IMeetingMetadataDiagnosticProvider
{
    Task<MeetingMetadataDiagnosticResult> DiagnoseCurrentMeetingAsync(
        DateTimeOffset startedAt,
        TimeSpan timeout,
        CancellationToken cancellationToken);
}

public sealed record MeetingMetadata(
    string Title,
    IReadOnlyList<string> Attendees,
    string Agenda,
    DateTimeOffset? ScheduledEnd = null);

public sealed record MeetingMetadataDiagnosticResult(
    string Provider,
    DateTimeOffset StartedAt,
    bool Succeeded,
    bool TimedOut,
    long ElapsedMilliseconds,
    MeetingMetadata? Metadata,
    string? Error);

public sealed class NoopMeetingMetadataProvider : IMeetingMetadataProvider
{
    public Task<MeetingMetadata?> GetCurrentMeetingAsync(
        DateTimeOffset startedAt,
        CancellationToken cancellationToken)
    {
        return Task.FromResult<MeetingMetadata?>(null);
    }
}