OpenTween/Models/HomeTabModel.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) 2011      Egtra (@egtra) <http://dev.activebasic.com/egtra/>
   8 //           (c) 2012      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   9 // All rights reserved.
  10 //
  11 // This file is part of OpenTween.
  12 //
  13 // This program is free software; you can redistribute it and/or modify it
  14 // under the terms of the GNU General Public License as published by the Free
  15 // Software Foundation; either version 3 of the License, or (at your option)
  16 // any later version.
  17 //
  18 // This program is distributed in the hope that it will be useful, but
  19 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  21 // for more details.
  22 //
  23 // You should have received a copy of the GNU General Public License along
  24 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  25 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  26 // Boston, MA 02110-1301, USA.
  27
  28 #nullable enable
  29
  30 using System;
  31 using System.Collections.Concurrent;
  32 using System.Collections.Generic;
  33 using System.Linq;
  34 using System.Text;
  35 using System.Threading;
  36 using System.Threading.Tasks;
  37 using OpenTween.Setting;
  38
  39 namespace OpenTween.Models
  40 {
  41     public class HomeTabModel : TabModel
  42     {
  43         public override MyCommon.TabUsageType TabType
  44             => MyCommon.TabUsageType.Home;
  45
  46         public PostId? OldestId { get; set; }
  47
  48         public int TweetsPerHour => this.tweetsPerHour;
  49
  50         // 流速計測用
  51         private int tweetsPerHour = 0;
  52         private readonly ConcurrentDictionary<DateTimeUtc, int> tweetsTimestamps = new();
  53
  54         public HomeTabModel()
  55             : this(MyCommon.DEFAULTTAB.RECENT)
  56         {
  57         }
  58
  59         public HomeTabModel(string tabName)
  60             : base(tabName)
  61         {
  62         }
  63
  64         public override void AddPostQueue(PostClass post)
  65         {
  66             base.AddPostQueue(post);
  67             this.UpdateTimelineSpeed(post.CreatedAt);
  68         }
  69
  70         public override async Task RefreshAsync(Twitter tw, bool backward, bool startup, IProgress<string> progress)
  71         {
  72             bool read;
  73             if (!SettingManager.Instance.Common.UnreadManage)
  74                 read = true;
  75             else
  76                 read = startup && SettingManager.Instance.Common.Read;
  77
  78             progress.Report(string.Format(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText5, backward ? -1 : 1));
  79
  80             await tw.GetHomeTimelineApi(read, this, backward, startup)
  81                 .ConfigureAwait(false);
  82
  83             // 新着時未読クリア
  84             if (SettingManager.Instance.Common.ReadOldPosts)
  85                 TabInformations.GetInstance().SetReadHomeTab();
  86
  87             TabInformations.GetInstance().DistributePosts();
  88
  89             progress.Report(Properties.Resources.GetTimelineWorker_RunWorkerCompletedText1);
  90         }
  91
  92         /// <summary>
  93         /// タイムラインに追加された発言件数を反映し、タイムラインの流速を更新します
  94         /// </summary>
  95         private void UpdateTimelineSpeed(DateTimeUtc postCreatedAt)
  96         {
  97             var now = DateTimeUtc.Now;
  98
  99             // 1 時間以上前の時刻は追加しない
 100             var oneHour = TimeSpan.FromHours(1);
 101             if (now - postCreatedAt > oneHour)
 102                 return;
 103
 104             this.tweetsTimestamps.AddOrUpdate(postCreatedAt, 1, (k, v) => v + 1);
 105
 106             var removeKeys = new List<DateTimeUtc>();
 107             var tweetsInWindow = 0;
 108             foreach (var (timestamp, count) in this.tweetsTimestamps)
 109             {
 110                 if (now - timestamp > oneHour)
 111                     removeKeys.Add(timestamp);
 112                 else
 113                     tweetsInWindow += count;
 114             }
 115             Interlocked.Exchange(ref this.tweetsPerHour, tweetsInWindow);
 116
 117             foreach (var key in removeKeys)
 118                 this.tweetsTimestamps.TryRemove(key, out _);
 119         }
 120     }
 121 }