OpenTween/Thumbnail/Services/Tinami.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2012 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   3 // All rights reserved.
   4 //
   5 // This file is part of OpenTween.
   6 //
   7 // This program is free software; you can redistribute it and/or modify it
   8 // under the terms of the GNU General Public License as published by the Free
   9 // Software Foundation; either version 3 of the License, or (at your option)
  10 // any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15 // for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  20 // Boston, MA 02110-1301, USA.
  21
  22 using System;
  23 using System.Collections.Generic;
  24 using System.Linq;
  25 using System.Net.Http;
  26 using System.Text;
  27 using System.Text.RegularExpressions;
  28 using System.Threading;
  29 using System.Threading.Tasks;
  30 using System.Web;
  31 using System.Xml.Linq;
  32 using System.Xml.XPath;
  33 using OpenTween.Connection;
  34 using OpenTween.Models;
  35
  36 namespace OpenTween.Thumbnail.Services
  37 {
  38     class Tinami : IThumbnailService
  39     {
  40         public static readonly Regex UrlPatternRegex =
  41             new Regex(@"^https?://www\.tinami\.com/view/(?<ContentId>\d+)$");
  42
  43         protected HttpClient http
  44             => this.localHttpClient ?? Networking.Http;
  45
  46         private readonly HttpClient localHttpClient;
  47
  48         public Tinami()
  49             : this(null)
  50         {
  51         }
  52
  53         public Tinami(HttpClient http)
  54             => this.localHttpClient = http;
  55
  56         public override async Task<ThumbnailInfo> GetThumbnailInfoAsync(string url, PostClass post, CancellationToken token)
  57         {
  58             var match = Tinami.UrlPatternRegex.Match(url);
  59             if (!match.Success)
  60                 return null;
  61
  62             var contentId = match.Groups["ContentId"].Value;
  63
  64             try
  65             {
  66                 var xdoc = await this.FetchContentInfoApiAsync(contentId, token)
  67                     .ConfigureAwait(false);
  68
  69                 if (xdoc.XPathSelectElement("/rsp").Attribute("stat").Value != "ok")
  70                     return null;
  71
  72                 var thumbUrlElm = xdoc.XPathSelectElement("/rsp/content/thumbnails/thumbnail_150x150");
  73                 if (thumbUrlElm == null)
  74                     return null;
  75
  76                 var descElm = xdoc.XPathSelectElement("/rsp/content/description");
  77
  78                 return new ThumbnailInfo
  79                 {
  80                     MediaPageUrl = url,
  81                     ThumbnailImageUrl = thumbUrlElm.Attribute("url").Value,
  82                     TooltipText = descElm?.Value,
  83                 };
  84             }
  85             catch (HttpRequestException) { }
  86
  87             return null;
  88         }
  89
  90         protected virtual async Task<XDocument> FetchContentInfoApiAsync(string contentId, CancellationToken token)
  91         {
  92             var query = new Dictionary<string, string>
  93             {
  94                 ["api_key"] = ApplicationSettings.TINAMIApiKey,
  95                 ["cont_id"] = contentId,
  96             };
  97
  98             var apiUrl = new Uri("http://api.tinami.com/content/info?" + MyCommon.BuildQueryString(query));
  99
 100             using var response = await this.http.GetAsync(apiUrl, token)
 101                 .ConfigureAwait(false);
 102
 103             response.EnsureSuccessStatusCode();
 104
 105             var xmlStr = await response.Content.ReadAsStringAsync()
 106                 .ConfigureAwait(false);
 107
 108             return XDocument.Parse(xmlStr);
 109         }
 110     }
 111 }