namespace ROLAC.API.Services.Notifications;

/// <summary>The three fields a browser hands over when it creates a push subscription.</summary>
public sealed record WebPushTarget(string Endpoint, string P256dh, string Auth);

/// <summary>
/// Outcome of pushing to one subscription. <see cref="IsExpired"/> is true when the push service
/// reported the subscription is gone (HTTP 404/410) so the caller can prune it.
/// </summary>
public sealed record WebPushSendResult(bool Success, bool IsExpired, string? Error);

/// <summary>
/// Thin wrapper over the WebPush library's encrypt-and-POST so that <see cref="WebPushService"/>'s
/// recipient resolution, pruning, and logging can be unit-tested without a real push service.
/// </summary>
public interface IWebPushSender
{
    Task<WebPushSendResult> SendAsync(WebPushTarget target, string payloadJson, CancellationToken ct = default);
}