// OpenTween - Client of Twitter
// Copyright (c) 2012 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
// All rights reserved.
//
// This file is part of OpenTween.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>, or write to
// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
// Boston, MA 02110-1301, USA.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OpenTween.Thumbnail
{
    public class ThumbnailInfo
    {
        public string ImageUrl { get; set; }
        public string ThumbnailUrl { get; set; }
        public string TooltipText { get; set; }
        public string FullSizeImageUrl { get; set; }

        public readonly Lazy<Task<MemoryImage>> ThumbnailImageTask;

        public ThumbnailInfo()
        {
            this.ThumbnailImageTask = new Lazy<Task<MemoryImage>>(this.LoadThumbnailImageAsync);
        }

        protected virtual Task<MemoryImage> LoadThumbnailImageAsync()
        {
            var client = new OTWebClient();

            var task = client.DownloadDataAsync(new Uri(this.ThumbnailUrl))
                .ContinueWith(t => MemoryImage.CopyFromBytes(t.Result));

            task.ContinueWith(_ => client.Dispose());

            return task;
        }
    }
}
