using CodeHollow.FeedReader;

namespace SharpRss.Models
{
    public class FeedModel
    {
        public FeedModel(string rssUrl)
        {
            _rssUrl = rssUrl;
            _fetchTask = FetchAsync();
        }
        private Task _fetchTask;

        private async Task FetchAsync()
        {
            IsReady = false;
            _feed = await FeedCache.GetFeed(_rssUrl);
            IsReady = true;
        }

        private Feed? _feed;
        public Feed Base {
            get
            {
                if (_feed == null)
                {
                    if (_fetchTask.IsFaulted)
                    { IsFaulted = _fetchTask.IsFaulted; return new Feed(); }
                    if (!(_fetchTask.Status == TaskStatus.Running || _fetchTask.Status == TaskStatus.WaitingForActivation))
                        _fetchTask.Start();
                    _fetchTask.Wait();
                }
                return _feed ?? new Feed();
            }
        }
        public bool IsFaulted { get; private set; }
        public bool IsReady { get; private set; }
        private readonly string _rssUrl;
    }
}