namespace Application.Abstractions.YouTube;

/// <summary>
/// YouTube 공개 Atom feed(`/feeds/videos.xml?channel_id=...`) 폴링.
/// Data API 할당량 0 unit, PubSub 누락 보완용.
/// </summary>
public interface IYouTubeFeedPoller
{
    /// <summary>채널의 최신 entry videoId를 반환 (없으면 null).</summary>
    Task<string?> GetLatestVideoIdAsync(string youtubeChannelID, CancellationToken ct);
}