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NewsManager.cs
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NewsManager.cs
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#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (c) 2007-2019 ShareX Team
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 2
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at <http://www.gnu.org/licenses/>.
*/
#endregion License Information (GPL v3)
using Newtonsoft.Json;
using ShareX.HelpersLib;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Cache;
namespace ShareX
{
public class NewsManager
{
public List<NewsItem> NewsItems { get; private set; } = new List<NewsItem>();
public DateTime LastReadDate { get; set; }
public bool IsUnread => UnreadCount > 0;
public int UnreadCount => NewsItems != null ? NewsItems.Count(x => x.IsUnread) : 0;
public void UpdateNews()
{
try
{
NewsItems = GetNews();
}
catch (Exception e)
{
DebugHelper.WriteException(e);
}
}
public void UpdateUnread()
{
if (NewsItems != null)
{
foreach (NewsItem newsItem in NewsItems)
{
newsItem.IsUnread = newsItem.DateTime > LastReadDate;
}
}
}
private List<NewsItem> GetNews()
{
using (WebClient wc = new WebClient())
{
wc.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
wc.Headers.Add(HttpRequestHeader.UserAgent, ShareXResources.UserAgent);
wc.Proxy = HelpersOptions.CurrentProxy.GetWebProxy();
string url = URLHelpers.CombineURL(Links.URL_WEBSITE, "news.json");
string response = wc.DownloadString(url);
if (!string.IsNullOrEmpty(response))
{
JsonSerializerSettings settings = new JsonSerializerSettings
{
DateTimeZoneHandling = DateTimeZoneHandling.Local
};
return JsonConvert.DeserializeObject<List<NewsItem>>(response, settings);
}
}
return null;
}
private void ExportNews(List<NewsItem> newsItems)
{
JsonSerializerSettings settings = new JsonSerializerSettings
{
DateTimeZoneHandling = DateTimeZoneHandling.Utc,
Formatting = Formatting.Indented,
NullValueHandling = NullValueHandling.Ignore
};
string json = JsonConvert.SerializeObject(newsItems, settings);
File.WriteAllText("news.json", json);
}
}
}