OpenTween/Thumbnail/Services/Nicovideo.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2007-2011 kiri_feather (@kiri_feather) <kiri.feather@gmail.com>
   3 //           (c) 2008-2011 Moz (@syo68k)
   4 //           (c) 2008-2011 takeshik (@takeshik) <http://www.takeshik.org/>
   5 //           (c) 2010-2011 anis774 (@anis774) <http://d.hatena.ne.jp/anis774/>
   6 //           (c) 2010-2011 fantasticswallow (@f_swallow) <http://twitter.com/f_swallow>
   7 //           (c) 2012      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   8 // All rights reserved.
   9 //
  10 // This file is part of OpenTween.
  11 //
  12 // This program is free software; you can redistribute it and/or modify it
  13 // under the terms of the GNU General Public License as published by the Free
  14 // Software Foundation; either version 3 of the License, or (at your option)
  15 // any later version.
  16 //
  17 // This program is distributed in the hope that it will be useful, but
  18 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  19 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  20 // for more details.
  21 //
  22 // You should have received a copy of the GNU General Public License along
  23 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  24 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  25 // Boston, MA 02110-1301, USA.
  26
  27 #nullable enable
  28
  29 using System;
  30 using System.Collections.Generic;
  31 using System.Globalization;
  32 using System.Linq;
  33 using System.Net.Http;
  34 using System.Text;
  35 using System.Text.RegularExpressions;
  36 using System.Threading;
  37 using System.Threading.Tasks;
  38 using System.Xml;
  39 using System.Xml.Linq;
  40 using OpenTween.Connection;
  41 using OpenTween.Models;
  42
  43 namespace OpenTween.Thumbnail.Services
  44 {
  45     class Nicovideo : IThumbnailService
  46     {
  47         public static readonly Regex UrlPatternRegex =
  48             new Regex(@"^https?://(?:(www|ext)\.nicovideo\.jp/watch|nico\.ms)/(?<id>(?:sm|nm)?[0-9]+)(\?.+)?$");
  49
  50         public override async Task<ThumbnailInfo?> GetThumbnailInfoAsync(string url, PostClass post, CancellationToken token)
  51         {
  52             var match = Nicovideo.UrlPatternRegex.Match(url);
  53             if (!match.Success)
  54                 return null;
  55
  56             try
  57             {
  58                 var requestUri = new Uri("http://www.nicovideo.jp/api/getthumbinfo/" + match.Groups["id"].Value);
  59                 var responseText = await Networking.Http.GetStringAsync(requestUri);
  60
  61                 var xdoc = XDocument.Parse(responseText);
  62
  63                 var responseElement = xdoc.Element("nicovideo_thumb_response");
  64                 if (responseElement == null || responseElement.Attribute("status").Value != "ok")
  65                     return null;
  66
  67                 var thumbElement = responseElement.Element("thumb");
  68                 if (thumbElement == null)
  69                     return null;
  70
  71                 var thumbUrlElement = thumbElement.Element("thumbnail_url");
  72                 if (thumbUrlElement == null)
  73                     return null;
  74
  75                 return new ThumbnailInfo
  76                 {
  77                     MediaPageUrl = url,
  78                     ThumbnailImageUrl = thumbUrlElement.Value,
  79                     TooltipText = BuildTooltip(thumbElement),
  80                     IsPlayable = true,
  81                 };
  82             }
  83             catch (XmlException) { }
  84             catch (HttpRequestException) { }
  85
  86             return null;
  87         }
  88
  89         internal static string BuildTooltip(XElement thumbElement)
  90         {
  91             var tooltip = new StringBuilder(200);
  92
  93             var titleElement = thumbElement.Element("title");
  94             if (titleElement != null)
  95             {
  96                 tooltip.Append(Properties.Resources.NiconicoInfoText1);
  97                 tooltip.Append(titleElement.Value);
  98                 tooltip.AppendLine();
  99             }
 100
 101             var lengthElement = thumbElement.Element("length");
 102             if (lengthElement != null)
 103             {
 104                 tooltip.Append(Properties.Resources.NiconicoInfoText2);
 105                 tooltip.Append(lengthElement.Value);
 106                 tooltip.AppendLine();
 107             }
 108
 109             var firstRetrieveElement = thumbElement.Element("first_retrieve");
 110             if (firstRetrieveElement != null && DateTimeUtc.TryParse(firstRetrieveElement.Value, DateTimeFormatInfo.InvariantInfo, out var firstRetrieveDate))
 111             {
 112                 tooltip.Append(Properties.Resources.NiconicoInfoText3);
 113                 tooltip.Append(firstRetrieveDate.ToLocalTimeString());
 114                 tooltip.AppendLine();
 115             }
 116
 117             var viewCounterElement = thumbElement.Element("view_counter");
 118             if (viewCounterElement != null)
 119             {
 120                 tooltip.Append(Properties.Resources.NiconicoInfoText4);
 121                 tooltip.Append(viewCounterElement.Value);
 122                 tooltip.AppendLine();
 123             }
 124
 125             var commentNumElement = thumbElement.Element("comment_num");
 126             if (commentNumElement != null)
 127             {
 128                 tooltip.Append(Properties.Resources.NiconicoInfoText5);
 129                 tooltip.Append(commentNumElement.Value);
 130                 tooltip.AppendLine();
 131             }
 132
 133             var mylistCounterElement = thumbElement.Element("mylist_counter");
 134             if (mylistCounterElement != null)
 135             {
 136                 tooltip.Append(Properties.Resources.NiconicoInfoText6);
 137                 tooltip.Append(mylistCounterElement.Value);
 138                 tooltip.AppendLine();
 139             }
 140
 141             return tooltip.ToString();
 142         }
 143     }
 144 }