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 using System;
  28 using System.Collections.Generic;
  29 using System.Linq;
  30 using System.Net.Http;
  31 using System.Text;
  32 using System.Text.RegularExpressions;
  33 using System.Threading;
  34 using System.Threading.Tasks;
  35 using System.Xml;
  36 using System.Xml.Linq;
  37 using OpenTween.Connection;
  38 using OpenTween.Models;
  39
  40 namespace OpenTween.Thumbnail.Services
  41 {
  42     class Nicovideo : IThumbnailService
  43     {
  44         public static readonly Regex UrlPatternRegex =
  45             new Regex(@"^https?://(?:(www|ext)\.nicovideo\.jp/watch|nico\.ms)/(?<id>(?:sm|nm)?[0-9]+)(\?.+)?$");
  46
  47         public override async Task<ThumbnailInfo> GetThumbnailInfoAsync(string url, PostClass post, CancellationToken token)
  48         {
  49             var match = Nicovideo.UrlPatternRegex.Match(url);
  50             if (!match.Success)
  51                 return null;
  52
  53             try
  54             {
  55                 var requestUri = new Uri("http://www.nicovideo.jp/api/getthumbinfo/" + match.Groups["id"].Value);
  56                 var responseText = await Networking.Http.GetStringAsync(requestUri);
  57
  58                 var xdoc = XDocument.Parse(responseText);
  59
  60                 var responseElement = xdoc.Element("nicovideo_thumb_response");
  61                 if (responseElement == null || responseElement.Attribute("status").Value != "ok")
  62                     return null;
  63
  64                 var thumbElement = responseElement.Element("thumb");
  65                 if (thumbElement == null)
  66                     return null;
  67
  68                 var thumbUrlElement = thumbElement.Element("thumbnail_url");
  69                 if (thumbUrlElement == null)
  70                     return null;
  71
  72                 return new ThumbnailInfo
  73                 {
  74                     MediaPageUrl = url,
  75                     ThumbnailImageUrl = thumbUrlElement.Value,
  76                     TooltipText = BuildTooltip(thumbElement),
  77                     IsPlayable = true,
  78                 };
  79             }
  80             catch (HttpRequestException) { }
  81
  82             return null;
  83         }
  84
  85         internal static string BuildTooltip(XElement thumbElement)
  86         {
  87             var tooltip = new StringBuilder(200);
  88
  89             var titleElement = thumbElement.Element("title");
  90             if (titleElement != null)
  91             {
  92                 tooltip.Append(Properties.Resources.NiconicoInfoText1);
  93                 tooltip.Append(titleElement.Value);
  94                 tooltip.AppendLine();
  95             }
  96
  97             var lengthElement = thumbElement.Element("length");
  98             if (lengthElement != null)
  99             {
 100                 tooltip.Append(Properties.Resources.NiconicoInfoText2);
 101                 tooltip.Append(lengthElement.Value);
 102                 tooltip.AppendLine();
 103             }
 104
 105             var firstRetrieveElement = thumbElement.Element("first_retrieve");
 106             DateTime firstRetrieveDate;
 107             if (firstRetrieveElement != null && DateTime.TryParse(firstRetrieveElement.Value, out firstRetrieveDate))
 108             {
 109                 tooltip.Append(Properties.Resources.NiconicoInfoText3);
 110                 tooltip.Append(firstRetrieveDate.ToString());
 111                 tooltip.AppendLine();
 112             }
 113
 114             var viewCounterElement = thumbElement.Element("view_counter");
 115             if (viewCounterElement != null)
 116             {
 117                 tooltip.Append(Properties.Resources.NiconicoInfoText4);
 118                 tooltip.Append(viewCounterElement.Value);
 119                 tooltip.AppendLine();
 120             }
 121
 122             var commentNumElement = thumbElement.Element("comment_num");
 123             if (commentNumElement != null)
 124             {
 125                 tooltip.Append(Properties.Resources.NiconicoInfoText5);
 126                 tooltip.Append(commentNumElement.Value);
 127                 tooltip.AppendLine();
 128             }
 129
 130             var mylistCounterElement = thumbElement.Element("mylist_counter");
 131             if (mylistCounterElement != null)
 132             {
 133                 tooltip.Append(Properties.Resources.NiconicoInfoText6);
 134                 tooltip.Append(mylistCounterElement.Value);
 135                 tooltip.AppendLine();
 136             }
 137
 138             return tooltip.ToString();
 139         }
 140     }
 141 }