OpenTween/Twitter.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) 2013      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 using System.Diagnostics;
  29 using System.IO;
  30 using System.Linq;
  31 using System.Net;
  32 using System.Net.Http;
  33 using System.Runtime.CompilerServices;
  34 using System.Runtime.Serialization;
  35 using System.Runtime.Serialization.Json;
  36 using System.Text;
  37 using System.Text.RegularExpressions;
  38 using System.Threading;
  39 using System.Threading.Tasks;
  40 using System.Web;
  41 using System.Xml;
  42 using System.Xml.Linq;
  43 using System.Xml.XPath;
  44 using System;
  45 using System.Reflection;
  46 using System.Collections.Generic;
  47 using System.Drawing;
  48 using System.Windows.Forms;
  49 using OpenTween.Api;
  50 using OpenTween.Api.DataModel;
  51 using OpenTween.Connection;
  52 using OpenTween.Models;
  53 using System.Drawing.Imaging;
  54 using OpenTween.Setting;
  55
  56 namespace OpenTween
  57 {
  58     public class Twitter : IDisposable
  59     {
  60         #region Regexp from twitter-text-js
  61
  62         // The code in this region code block incorporates works covered by
  63         // the following copyright and permission notices:
  64         //
  65         //   Copyright 2011 Twitter, Inc.
  66         //
  67         //   Licensed under the Apache License, Version 2.0 (the "License"); you
  68         //   may not use this work except in compliance with the License. You
  69         //   may obtain a copy of the License in the LICENSE file, or at:
  70         //
  71         //   http://www.apache.org/licenses/LICENSE-2.0
  72         //
  73         //   Unless required by applicable law or agreed to in writing, software
  74         //   distributed under the License is distributed on an "AS IS" BASIS,
  75         //   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  76         //   implied. See the License for the specific language governing
  77         //   permissions and limitations under the License.
  78
  79         //Hashtag用正規表現
  80         private const string LATIN_ACCENTS = @"\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u00ff\u0100-\u024f\u0253\u0254\u0256\u0257\u0259\u025b\u0263\u0268\u026f\u0272\u0289\u028b\u02bb\u1e00-\u1eff";
  81         private const string NON_LATIN_HASHTAG_CHARS = @"\u0400-\u04ff\u0500-\u0527\u1100-\u11ff\u3130-\u3185\uA960-\uA97F\uAC00-\uD7AF\uD7B0-\uD7FF";
  82         //private const string CJ_HASHTAG_CHARACTERS = @"\u30A1-\u30FA\uFF66-\uFF9F\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\u3041-\u3096\u3400-\u4DBF\u4E00-\u9FFF\u20000-\u2A6DF\u2A700-\u2B73F\u2B740-\u2B81F\u2F800-\u2FA1F";
  83         private const string CJ_HASHTAG_CHARACTERS = @"\u30A1-\u30FA\u30FC\u3005\uFF66-\uFF9F\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\u3041-\u309A\u3400-\u4DBF\p{IsCJKUnifiedIdeographs}";
  84         private const string HASHTAG_BOUNDARY = @"^|$|\s|「|」|。|\.|!";
  85         private const string HASHTAG_ALPHA = "[a-z_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
  86         private const string HASHTAG_ALPHANUMERIC = "[a-z0-9_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
  87         private const string HASHTAG_TERMINATOR = "[^a-z0-9_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
  88         public const string HASHTAG = "(" + HASHTAG_BOUNDARY + ")(#|＃)(" + HASHTAG_ALPHANUMERIC + "*" + HASHTAG_ALPHA + HASHTAG_ALPHANUMERIC + "*)(?=" + HASHTAG_TERMINATOR + "|" + HASHTAG_BOUNDARY + ")";
  89         //URL正規表現
  90         private const string url_valid_preceding_chars = @"(?:[^A-Za-z0-9@＠$#＃\ufffe\ufeff\uffff\u202a-\u202e]|^)";
  91         public const string url_invalid_without_protocol_preceding_chars = @"[-_./]$";
  92         private const string url_invalid_domain_chars = @"\!'#%&'\(\)*\+,\\\-\.\/:;<=>\?@\[\]\^_{|}~\$\u2000-\u200a\u0009-\u000d\u0020\u0085\u00a0\u1680\u180e\u2028\u2029\u202f\u205f\u3000\ufffe\ufeff\uffff\u202a-\u202e";
  93         private const string url_valid_domain_chars = @"[^" + url_invalid_domain_chars + "]";
  94         private const string url_valid_subdomain = @"(?:(?:" + url_valid_domain_chars + @"(?:[_-]|" + url_valid_domain_chars + @")*)?" + url_valid_domain_chars + @"\.)";
  95         private const string url_valid_domain_name = @"(?:(?:" + url_valid_domain_chars + @"(?:-|" + url_valid_domain_chars + @")*)?" + url_valid_domain_chars + @"\.)";
  96         private const string url_valid_GTLD = @"(?:(?:aero|asia|biz|cat|com|coop|edu|gov|info|int|jobs|mil|mobi|museum|name|net|org|pro|tel|travel|xxx)(?=[^0-9a-zA-Z]|$))";
  97         private const string url_valid_CCTLD = @"(?:(?:ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|ss|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|za|zm|zw)(?=[^0-9a-zA-Z]|$))";
  98         private const string url_valid_punycode = @"(?:xn--[0-9a-z]+)";
  99         private const string url_valid_domain = @"(?<domain>" + url_valid_subdomain + "*" + url_valid_domain_name + "(?:" + url_valid_GTLD + "|" + url_valid_CCTLD + ")|" + url_valid_punycode + ")";
 100         public const string url_valid_ascii_domain = @"(?:(?:[a-z0-9" + LATIN_ACCENTS + @"]+)\.)+(?:" + url_valid_GTLD + "|" + url_valid_CCTLD + "|" + url_valid_punycode + ")";
 101         public const string url_invalid_short_domain = "^" + url_valid_domain_name + url_valid_CCTLD + "$";
 102         private const string url_valid_port_number = @"[0-9]+";
 103
 104         private const string url_valid_general_path_chars = @"[a-z0-9!*';:=+,.$/%#\[\]\-_~|&" + LATIN_ACCENTS + "]";
 105         private const string url_balance_parens = @"(?:\(" + url_valid_general_path_chars + @"+\))";
 106         private const string url_valid_path_ending_chars = @"(?:[+\-a-z0-9=_#/" + LATIN_ACCENTS + "]|" + url_balance_parens + ")";
 107         private const string pth = "(?:" +
 108             "(?:" +
 109                 url_valid_general_path_chars + "*" +
 110                 "(?:" + url_balance_parens + url_valid_general_path_chars + "*)*" +
 111                 url_valid_path_ending_chars +
 112                 ")|(?:@" + url_valid_general_path_chars + "+/)" +
 113             ")";
 114         private const string qry = @"(?<query>\?[a-z0-9!?*'();:&=+$/%#\[\]\-_.,~|]*[a-z0-9_&=#/])?";
 115         public const string rgUrl = @"(?<before>" + url_valid_preceding_chars + ")" +
 116                                     "(?<url>(?<protocol>https?://)?" +
 117                                     "(?<domain>" + url_valid_domain + ")" +
 118                                     "(?::" + url_valid_port_number + ")?" +
 119                                     "(?<path>/" + pth + "*)?" +
 120                                     qry +
 121                                     ")";
 122
 123         #endregion
 124
 125         /// <summary>
 126         /// Twitter API のステータスページのURL
 127         /// </summary>
 128         public const string ServiceAvailabilityStatusUrl = "https://status.io.watchmouse.com/7617";
 129
 130         /// <summary>
 131         /// ツイートへのパーマリンクURLを判定する正規表現
 132         /// </summary>
 133         public static readonly Regex StatusUrlRegex = new Regex(@"https?://([^.]+\.)?twitter\.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)/status(es)?/(?<StatusId>[0-9]+)(/photo)?", RegexOptions.IgnoreCase);
 134
 135         /// <summary>
 136         /// FavstarやaclogなどTwitter関連サービスのパーマリンクURLからステータスIDを抽出する正規表現
 137         /// </summary>
 138         public static readonly Regex ThirdPartyStatusUrlRegex = new Regex(@"https?://(?:[^.]+\.)?(?:
 139   favstar\.fm/users/[a-zA-Z0-9_]+/status/       # Favstar
 140 | favstar\.fm/t/                                # Favstar (short)
 141 | aclog\.koba789\.com/i/                        # aclog
 142 | frtrt\.net/solo_status\.php\?status=          # RtRT
 143 )(?<StatusId>[0-9]+)", RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
 144
 145         /// <summary>
 146         /// DM送信かどうかを判定する正規表現
 147         /// </summary>
 148         public static readonly Regex DMSendTextRegex = new Regex(@"^DM? +(?<id>[a-zA-Z0-9_]+) +(?<body>.*)", RegexOptions.IgnoreCase | RegexOptions.Singleline);
 149
 150         public TwitterApi Api { get; }
 151         public TwitterConfiguration Configuration { get; private set; }
 152
 153         delegate void GetIconImageDelegate(PostClass post);
 154         private readonly object LockObj = new object();
 155         private ISet<long> followerId = new HashSet<long>();
 156         private bool _GetFollowerResult = false;
 157         private long[] noRTId = new long[0];
 158         private bool _GetNoRetweetResult = false;
 159
 160         //プロパティからアクセスされる共通情報
 161         private string _uname;
 162
 163         private bool _readOwnPost;
 164         private List<string> _hashList = new List<string>();
 165
 166         //max_idで古い発言を取得するために保持（lists分は個別タブで管理）
 167         private long minDirectmessage = long.MaxValue;
 168         private long minDirectmessageSent = long.MaxValue;
 169
 170         private long previousStatusId = -1L;
 171
 172         //private FavoriteQueue favQueue;
 173
 174         //private List<PostClass> _deletemessages = new List<PostClass>();
 175
 176         public Twitter() : this(new TwitterApi())
 177         {
 178         }
 179
 180         public Twitter(TwitterApi api)
 181         {
 182             this.Api = api;
 183             this.Configuration = TwitterConfiguration.DefaultConfiguration();
 184         }
 185
 186         public TwitterApiAccessLevel AccessLevel
 187         {
 188             get
 189             {
 190                 return MyCommon.TwitterApiInfo.AccessLevel;
 191             }
 192         }
 193
 194         protected void ResetApiStatus()
 195         {
 196             MyCommon.TwitterApiInfo.Reset();
 197         }
 198
 199         public void ClearAuthInfo()
 200         {
 201             Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
 202             this.ResetApiStatus();
 203         }
 204
 205         [Obsolete]
 206         public void VerifyCredentials()
 207         {
 208             try
 209             {
 210                 this.VerifyCredentialsAsync().Wait();
 211             }
 212             catch (AggregateException ex) when (ex.InnerException is WebApiException)
 213             {
 214                 throw new WebApiException(ex.InnerException.Message, ex);
 215             }
 216         }
 217
 218         public async Task VerifyCredentialsAsync()
 219         {
 220             var user = await this.Api.AccountVerifyCredentials()
 221                 .ConfigureAwait(false);
 222
 223             this.UpdateUserStats(user);
 224         }
 225
 226         public void Initialize(string token, string tokenSecret, string username, long userId)
 227         {
 228             //OAuth認証
 229             if (string.IsNullOrEmpty(token) || string.IsNullOrEmpty(tokenSecret) || string.IsNullOrEmpty(username))
 230             {
 231                 Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
 232             }
 233             this.ResetApiStatus();
 234             this.Api.Initialize(token, tokenSecret, userId, username);
 235             _uname = username.ToLowerInvariant();
 236             if (SettingManager.Common.UserstreamStartup) this.ReconnectUserStream();
 237         }
 238
 239         public string PreProcessUrl(string orgData)
 240         {
 241             int posl1;
 242             var posl2 = 0;
 243             //var IDNConveter = new IdnMapping();
 244             var href = "<a href=\"";
 245
 246             while (true)
 247             {
 248                 if (orgData.IndexOf(href, posl2, StringComparison.Ordinal) > -1)
 249                 {
 250                     var urlStr = "";
 251                     // IDN展開
 252                     posl1 = orgData.IndexOf(href, posl2, StringComparison.Ordinal);
 253                     posl1 += href.Length;
 254                     posl2 = orgData.IndexOf("\"", posl1, StringComparison.Ordinal);
 255                     urlStr = orgData.Substring(posl1, posl2 - posl1);
 256
 257                     if (!urlStr.StartsWith("http://", StringComparison.Ordinal)
 258                         && !urlStr.StartsWith("https://", StringComparison.Ordinal)
 259                         && !urlStr.StartsWith("ftp://", StringComparison.Ordinal))
 260                     {
 261                         continue;
 262                     }
 263
 264                     var replacedUrl = MyCommon.IDNEncode(urlStr);
 265                     if (replacedUrl == null) continue;
 266                     if (replacedUrl == urlStr) continue;
 267
 268                     orgData = orgData.Replace("<a href=\"" + urlStr, "<a href=\"" + replacedUrl);
 269                     posl2 = 0;
 270                 }
 271                 else
 272                 {
 273                     break;
 274                 }
 275             }
 276             return orgData;
 277         }
 278
 279         public async Task PostStatus(string postStr, long? reply_to, IReadOnlyList<long> mediaIds = null)
 280         {
 281             this.CheckAccountState();
 282
 283             if (Twitter.DMSendTextRegex.IsMatch(postStr))
 284             {
 285                 await this.SendDirectMessage(postStr)
 286                     .ConfigureAwait(false);
 287                 return;
 288             }
 289
 290             var response = await this.Api.StatusesUpdate(postStr, reply_to, mediaIds)
 291                 .ConfigureAwait(false);
 292
 293             var status = await response.LoadJsonAsync()
 294                 .ConfigureAwait(false);
 295
 296             this.UpdateUserStats(status.User);
 297
 298             if (status.Id == this.previousStatusId)
 299                 throw new WebApiException("OK:Delaying?");
 300
 301             this.previousStatusId = status.Id;
 302         }
 303
 304         public Task<long> UploadMedia(IMediaItem item)
 305             => this.UploadMedia(item, SettingManager.Common.AlphaPNGWorkaround);
 306
 307         public async Task<long> UploadMedia(IMediaItem item, bool alphaPNGWorkaround)
 308         {
 309             this.CheckAccountState();
 310
 311             LazyJson<TwitterUploadMediaResult> response;
 312
 313             using (var origImage = item.CreateImage())
 314             {
 315                 if (alphaPNGWorkaround && this.AddAlphaChannelIfNeeded(origImage.Image, out var newImage))
 316                 {
 317                     using (var newMediaItem = new MemoryImageMediaItem(newImage))
 318                     {
 319                         response = await this.Api.MediaUpload(newMediaItem)
 320                             .ConfigureAwait(false);
 321                     }
 322                 }
 323                 else
 324                 {
 325                     response = await this.Api.MediaUpload(item)
 326                         .ConfigureAwait(false);
 327                 }
 328             }
 329
 330             var media = await response.LoadJsonAsync()
 331                 .ConfigureAwait(false);
 332
 333             return media.MediaId;
 334         }
 335
 336         /// <summary>
 337         /// pic.twitter.com アップロード時に JPEG への変換を回避するための加工を行う
 338         /// </summary>
 339         /// <remarks>
 340         /// pic.twitter.com へのアップロード時に、アルファチャンネルを持たない PNG 画像が
 341         /// JPEG 形式に変換され画質が低下する問題を回避します。
 342         /// PNG 以外の画像や、すでにアルファチャンネルを持つ PNG 画像に対しては何もしません。
 343         /// </remarks>
 344         /// <returns>加工が行われた場合は true、そうでない場合は false</returns>
 345         private bool AddAlphaChannelIfNeeded(Image origImage, out MemoryImage newImage)
 346         {
 347             newImage = null;
 348
 349             // PNG 画像以外に対しては何もしない
 350             if (origImage.RawFormat.Guid != ImageFormat.Png.Guid)
 351                 return false;
 352
 353             using (var bitmap = new Bitmap(origImage))
 354             {
 355                 // アルファ値が 255 以外のピクセルが含まれていた場合は何もしない
 356                 foreach (var x in Enumerable.Range(0, bitmap.Width))
 357                 {
 358                     foreach (var y in Enumerable.Range(0, bitmap.Height))
 359                     {
 360                         if (bitmap.GetPixel(x, y).A != 255)
 361                             return false;
 362                     }
 363                 }
 364
 365                 // 左上の 1px だけアルファ値を 254 にする
 366                 var pixel = bitmap.GetPixel(0, 0);
 367                 var newPixel = Color.FromArgb(pixel.A - 1, pixel.R, pixel.G, pixel.B);
 368                 bitmap.SetPixel(0, 0, newPixel);
 369
 370                 // MemoryImage 作成時に画像はコピーされるため、この後 bitmap は破棄しても問題ない
 371                 newImage = MemoryImage.CopyFromImage(bitmap);
 372
 373                 return true;
 374             }
 375         }
 376
 377         public async Task SendDirectMessage(string postStr)
 378         {
 379             this.CheckAccountState();
 380             this.CheckAccessLevel(TwitterApiAccessLevel.ReadWriteAndDirectMessage);
 381
 382             var mc = Twitter.DMSendTextRegex.Match(postStr);
 383
 384             var response = await this.Api.DirectMessagesNew(mc.Groups["body"].Value, mc.Groups["id"].Value)
 385                 .ConfigureAwait(false);
 386
 387             var dm = await response.LoadJsonAsync()
 388                 .ConfigureAwait(false);
 389
 390             this.UpdateUserStats(dm.Sender);
 391         }
 392
 393         public async Task PostRetweet(long id, bool read)
 394         {
 395             this.CheckAccountState();
 396
 397             //データ部分の生成
 398             var post = TabInformations.GetInstance()[id];
 399             if (post == null)
 400                 throw new WebApiException("Err:Target isn't found.");
 401
 402             var target = post.RetweetedId ?? id;  //再RTの場合は元発言をRT
 403
 404             var response = await this.Api.StatusesRetweet(target)
 405                 .ConfigureAwait(false);
 406
 407             var status = await response.LoadJsonAsync()
 408                 .ConfigureAwait(false);
 409
 410             //二重取得回避
 411             lock (LockObj)
 412             {
 413                 if (TabInformations.GetInstance().ContainsKey(status.Id))
 414                     return;
 415             }
 416
 417             //Retweet判定
 418             if (status.RetweetedStatus == null)
 419                 throw new WebApiException("Invalid Json!");
 420
 421             //ReTweetしたものをTLに追加
 422             post = CreatePostsFromStatusData(status);
 423
 424             //ユーザー情報
 425             post.IsMe = true;
 426
 427             post.IsRead = read;
 428             post.IsOwl = false;
 429             if (_readOwnPost) post.IsRead = true;
 430             post.IsDm = false;
 431
 432             TabInformations.GetInstance().AddPost(post);
 433         }
 434
 435         public string Username
 436             => this.Api.CurrentScreenName;
 437
 438         public long UserId
 439             => this.Api.CurrentUserId;
 440
 441         private static MyCommon.ACCOUNT_STATE _accountState = MyCommon.ACCOUNT_STATE.Valid;
 442         public static MyCommon.ACCOUNT_STATE AccountState
 443         {
 444             get
 445             {
 446                 return _accountState;
 447             }
 448             set
 449             {
 450                 _accountState = value;
 451             }
 452         }
 453
 454         public bool RestrictFavCheck { get; set; }
 455
 456         public bool ReadOwnPost
 457         {
 458             get
 459             {
 460                 return _readOwnPost;
 461             }
 462             set
 463             {
 464                 _readOwnPost = value;
 465             }
 466         }
 467
 468         public int FollowersCount { get; private set; }
 469         public int FriendsCount { get; private set; }
 470         public int StatusesCount { get; private set; }
 471         public string Location { get; private set; } = "";
 472         public string Bio { get; private set; } = "";
 473
 474         /// <summary>ユーザーのフォロワー数などの情報を更新します</summary>
 475         private void UpdateUserStats(TwitterUser self)
 476         {
 477             this.FollowersCount = self.FollowersCount;
 478             this.FriendsCount = self.FriendsCount;
 479             this.StatusesCount = self.StatusesCount;
 480             this.Location = self.Location;
 481             this.Bio = self.Description;
 482         }
 483
 484         /// <summary>
 485         /// 渡された取得件数がWORKERTYPEに応じた取得可能範囲に収まっているか検証する
 486         /// </summary>
 487         public static bool VerifyApiResultCount(MyCommon.WORKERTYPE type, int count)
 488         {
 489             return count >= 20 && count <= GetMaxApiResultCount(type);
 490         }
 491
 492         /// <summary>
 493         /// 渡された取得件数が更新時の取得可能範囲に収まっているか検証する
 494         /// </summary>
 495         public static bool VerifyMoreApiResultCount(int count)
 496         {
 497             return count >= 20 && count <= 200;
 498         }
 499
 500         /// <summary>
 501         /// 渡された取得件数が起動時の取得可能範囲に収まっているか検証する
 502         /// </summary>
 503         public static bool VerifyFirstApiResultCount(int count)
 504         {
 505             return count >= 20 && count <= 200;
 506         }
 507
 508         /// <summary>
 509         /// WORKERTYPEに応じた取得可能な最大件数を取得する
 510         /// </summary>
 511         public static int GetMaxApiResultCount(MyCommon.WORKERTYPE type)
 512         {
 513             // 参照: REST APIs - 各endpointのcountパラメータ
 514             // https://dev.twitter.com/rest/public
 515             switch (type)
 516             {
 517                 case MyCommon.WORKERTYPE.Timeline:
 518                 case MyCommon.WORKERTYPE.Reply:
 519                 case MyCommon.WORKERTYPE.UserTimeline:
 520                 case MyCommon.WORKERTYPE.Favorites:
 521                 case MyCommon.WORKERTYPE.DirectMessegeRcv:
 522                 case MyCommon.WORKERTYPE.DirectMessegeSnt:
 523                 case MyCommon.WORKERTYPE.List:  // 不明
 524                     return 200;
 525
 526                 case MyCommon.WORKERTYPE.PublicSearch:
 527                     return 100;
 528
 529                 default:
 530                     throw new InvalidOperationException("Invalid type: " + type);
 531             }
 532         }
 533
 534         /// <summary>
 535         /// WORKERTYPEに応じた取得件数を取得する
 536         /// </summary>
 537         public static int GetApiResultCount(MyCommon.WORKERTYPE type, bool more, bool startup)
 538         {
 539             if (type == MyCommon.WORKERTYPE.DirectMessegeRcv ||
 540                 type == MyCommon.WORKERTYPE.DirectMessegeSnt)
 541             {
 542                 return 20;
 543             }
 544
 545             if (SettingManager.Common.UseAdditionalCount)
 546             {
 547                 switch (type)
 548                 {
 549                     case MyCommon.WORKERTYPE.Favorites:
 550                         if (SettingManager.Common.FavoritesCountApi != 0)
 551                             return SettingManager.Common.FavoritesCountApi;
 552                         break;
 553                     case MyCommon.WORKERTYPE.List:
 554                         if (SettingManager.Common.ListCountApi != 0)
 555                             return SettingManager.Common.ListCountApi;
 556                         break;
 557                     case MyCommon.WORKERTYPE.PublicSearch:
 558                         if (SettingManager.Common.SearchCountApi != 0)
 559                             return SettingManager.Common.SearchCountApi;
 560                         break;
 561                     case MyCommon.WORKERTYPE.UserTimeline:
 562                         if (SettingManager.Common.UserTimelineCountApi != 0)
 563                             return SettingManager.Common.UserTimelineCountApi;
 564                         break;
 565                 }
 566                 if (more && SettingManager.Common.MoreCountApi != 0)
 567                 {
 568                     return Math.Min(SettingManager.Common.MoreCountApi, GetMaxApiResultCount(type));
 569                 }
 570                 if (startup && SettingManager.Common.FirstCountApi != 0 && type != MyCommon.WORKERTYPE.Reply)
 571                 {
 572                     return Math.Min(SettingManager.Common.FirstCountApi, GetMaxApiResultCount(type));
 573                 }
 574             }
 575
 576             // 上記に当てはまらない場合の共通処理
 577             var count = SettingManager.Common.CountApi;
 578
 579             if (type == MyCommon.WORKERTYPE.Reply)
 580                 count = SettingManager.Common.CountApiReply;
 581
 582             return Math.Min(count, GetMaxApiResultCount(type));
 583         }
 584
 585         public async Task GetHomeTimelineApi(bool read, HomeTabModel tab, bool more, bool startup)
 586         {
 587             this.CheckAccountState();
 588
 589             var count = GetApiResultCount(MyCommon.WORKERTYPE.Timeline, more, startup);
 590
 591             TwitterStatus[] statuses;
 592             if (more)
 593             {
 594                 statuses = await this.Api.StatusesHomeTimeline(count, maxId: tab.OldestId)
 595                     .ConfigureAwait(false);
 596             }
 597             else
 598             {
 599                 statuses = await this.Api.StatusesHomeTimeline(count)
 600                     .ConfigureAwait(false);
 601             }
 602
 603             var minimumId = this.CreatePostsFromJson(statuses, MyCommon.WORKERTYPE.Timeline, tab, read);
 604
 605             if (minimumId != null && minimumId.Value < tab.OldestId)
 606                 tab.OldestId = minimumId.Value;
 607         }
 608
 609         public async Task GetMentionsTimelineApi(bool read, MentionsTabModel tab, bool more, bool startup)
 610         {
 611             this.CheckAccountState();
 612
 613             var count = GetApiResultCount(MyCommon.WORKERTYPE.Reply, more, startup);
 614
 615             TwitterStatus[] statuses;
 616             if (more)
 617             {
 618                 statuses = await this.Api.StatusesMentionsTimeline(count, maxId: tab.OldestId)
 619                     .ConfigureAwait(false);
 620             }
 621             else
 622             {
 623                 statuses = await this.Api.StatusesMentionsTimeline(count)
 624                     .ConfigureAwait(false);
 625             }
 626
 627             var minimumId = this.CreatePostsFromJson(statuses, MyCommon.WORKERTYPE.Reply, tab, read);
 628
 629             if (minimumId != null && minimumId.Value < tab.OldestId)
 630                 tab.OldestId = minimumId.Value;
 631         }
 632
 633         public async Task GetUserTimelineApi(bool read, string userName, UserTimelineTabModel tab, bool more)
 634         {
 635             this.CheckAccountState();
 636
 637             var count = GetApiResultCount(MyCommon.WORKERTYPE.UserTimeline, more, false);
 638
 639             TwitterStatus[] statuses;
 640             if (string.IsNullOrEmpty(userName))
 641             {
 642                 var target = tab.ScreenName;
 643                 if (string.IsNullOrEmpty(target)) return;
 644                 userName = target;
 645                 statuses = await this.Api.StatusesUserTimeline(userName, count)
 646                     .ConfigureAwait(false);
 647             }
 648             else
 649             {
 650                 if (more)
 651                 {
 652                     statuses = await this.Api.StatusesUserTimeline(userName, count, maxId: tab.OldestId)
 653                         .ConfigureAwait(false);
 654                 }
 655                 else
 656                 {
 657                     statuses = await this.Api.StatusesUserTimeline(userName, count)
 658                         .ConfigureAwait(false);
 659                 }
 660             }
 661
 662             var minimumId = CreatePostsFromJson(statuses, MyCommon.WORKERTYPE.UserTimeline, tab, read);
 663
 664             if (minimumId != null && minimumId.Value < tab.OldestId)
 665                 tab.OldestId = minimumId.Value;
 666         }
 667
 668         public async Task<PostClass> GetStatusApi(bool read, long id)
 669         {
 670             this.CheckAccountState();
 671
 672             var status = await this.Api.StatusesShow(id)
 673                 .ConfigureAwait(false);
 674
 675             var item = CreatePostsFromStatusData(status);
 676
 677             item.IsRead = read;
 678             if (item.IsMe && !read && _readOwnPost) item.IsRead = true;
 679
 680             return item;
 681         }
 682
 683         public async Task GetStatusApi(bool read, long id, TabModel tab)
 684         {
 685             var post = await this.GetStatusApi(read, id)
 686                 .ConfigureAwait(false);
 687
 688             //非同期アイコン取得＆StatusDictionaryに追加
 689             if (tab != null && tab.IsInnerStorageTabType)
 690                 tab.AddPostQueue(post);
 691             else
 692                 TabInformations.GetInstance().AddPost(post);
 693         }
 694
 695         private PostClass CreatePostsFromStatusData(TwitterStatus status)
 696         {
 697             return CreatePostsFromStatusData(status, false);
 698         }
 699
 700         private PostClass CreatePostsFromStatusData(TwitterStatus status, bool favTweet)
 701         {
 702             var post = new PostClass();
 703             TwitterEntities entities;
 704             string sourceHtml;
 705
 706             post.StatusId = status.Id;
 707             if (status.RetweetedStatus != null)
 708             {
 709                 var retweeted = status.RetweetedStatus;
 710
 711                 post.CreatedAt = MyCommon.DateTimeParse(retweeted.CreatedAt);
 712
 713                 //Id
 714                 post.RetweetedId = retweeted.Id;
 715                 //本文
 716                 post.TextFromApi = retweeted.FullText;
 717                 entities = retweeted.MergedEntities;
 718                 sourceHtml = retweeted.Source;
 719                 //Reply先
 720                 post.InReplyToStatusId = retweeted.InReplyToStatusId;
 721                 post.InReplyToUser = retweeted.InReplyToScreenName;
 722                 post.InReplyToUserId = status.InReplyToUserId;
 723
 724                 if (favTweet)
 725                 {
 726                     post.IsFav = true;
 727                 }
 728                 else
 729                 {
 730                     //幻覚fav対策
 731                     var tc = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);
 732                     post.IsFav = tc.Contains(retweeted.Id);
 733                 }
 734
 735                 if (retweeted.Coordinates != null)
 736                     post.PostGeo = new PostClass.StatusGeo(retweeted.Coordinates.Coordinates[0], retweeted.Coordinates.Coordinates[1]);
 737
 738                 //以下、ユーザー情報
 739                 var user = retweeted.User;
 740                 if (user != null)
 741                 {
 742                     post.UserId = user.Id;
 743                     post.ScreenName = user.ScreenName;
 744                     post.Nickname = user.Name.Trim();
 745                     post.ImageUrl = user.ProfileImageUrlHttps;
 746                     post.IsProtect = user.Protected;
 747                 }
 748                 else
 749                 {
 750                     post.UserId = 0L;
 751                     post.ScreenName = "?????";
 752                     post.Nickname = "Unknown User";
 753                 }
 754
 755                 //Retweetした人
 756                 if (status.User != null)
 757                 {
 758                     post.RetweetedBy = status.User.ScreenName;
 759                     post.RetweetedByUserId = status.User.Id;
 760                     post.IsMe = post.RetweetedBy.ToLowerInvariant().Equals(_uname);
 761                 }
 762                 else
 763                 {
 764                     post.RetweetedBy = "?????";
 765                     post.RetweetedByUserId = 0L;
 766                 }
 767             }
 768             else
 769             {
 770                 post.CreatedAt = MyCommon.DateTimeParse(status.CreatedAt);
 771                 //本文
 772                 post.TextFromApi = status.FullText;
 773                 entities = status.MergedEntities;
 774                 sourceHtml = status.Source;
 775                 post.InReplyToStatusId = status.InReplyToStatusId;
 776                 post.InReplyToUser = status.InReplyToScreenName;
 777                 post.InReplyToUserId = status.InReplyToUserId;
 778
 779                 if (favTweet)
 780                 {
 781                     post.IsFav = true;
 782                 }
 783                 else
 784                 {
 785                     //幻覚fav対策
 786                     var tc = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);
 787                     post.IsFav = tc.Contains(post.StatusId) && TabInformations.GetInstance()[post.StatusId].IsFav;
 788                 }
 789
 790                 if (status.Coordinates != null)
 791                     post.PostGeo = new PostClass.StatusGeo(status.Coordinates.Coordinates[0], status.Coordinates.Coordinates[1]);
 792
 793                 //以下、ユーザー情報
 794                 var user = status.User;
 795                 if (user != null)
 796                 {
 797                     post.UserId = user.Id;
 798                     post.ScreenName = user.ScreenName;
 799                     post.Nickname = user.Name.Trim();
 800                     post.ImageUrl = user.ProfileImageUrlHttps;
 801                     post.IsProtect = user.Protected;
 802                     post.IsMe = post.ScreenName.ToLowerInvariant().Equals(_uname);
 803                 }
 804                 else
 805                 {
 806                     post.UserId = 0L;
 807                     post.ScreenName = "?????";
 808                     post.Nickname = "Unknown User";
 809                 }
 810             }
 811             //HTMLに整形
 812             string textFromApi = post.TextFromApi;
 813             post.Text = CreateHtmlAnchor(textFromApi, post.ReplyToList, entities, post.Media);
 814             post.TextFromApi = textFromApi;
 815             post.TextFromApi = this.ReplaceTextFromApi(post.TextFromApi, entities);
 816             post.TextFromApi = WebUtility.HtmlDecode(post.TextFromApi);
 817             post.TextFromApi = post.TextFromApi.Replace("<3", "\u2661");
 818             post.AccessibleText = this.CreateAccessibleText(textFromApi, entities, (status.RetweetedStatus ?? status).QuotedStatus);
 819             post.AccessibleText = WebUtility.HtmlDecode(post.AccessibleText);
 820             post.AccessibleText = post.AccessibleText.Replace("<3", "\u2661");
 821
 822             post.QuoteStatusIds = GetQuoteTweetStatusIds(entities)
 823                 .Where(x => x != post.StatusId && x != post.RetweetedId)
 824                 .Distinct().ToArray();
 825
 826             post.ExpandedUrls = entities.OfType<TwitterEntityUrl>()
 827                 .Select(x => new PostClass.ExpandedUrlInfo(x.Url, x.ExpandedUrl))
 828                 .ToArray();
 829
 830             // メモリ使用量削減 (同一のテキストであれば同一の string インスタンスを参照させる)
 831             if (post.Text == post.TextFromApi)
 832                 post.Text = post.TextFromApi;
 833             if (post.AccessibleText == post.TextFromApi)
 834                 post.AccessibleText = post.TextFromApi;
 835
 836             // 他の発言と重複しやすい (共通化できる) 文字列は string.Intern を通す
 837             post.ScreenName = string.Intern(post.ScreenName);
 838             post.Nickname = string.Intern(post.Nickname);
 839             post.ImageUrl = string.Intern(post.ImageUrl);
 840             post.RetweetedBy = post.RetweetedBy != null ? string.Intern(post.RetweetedBy) : null;
 841
 842             //Source整形
 843             var (sourceText, sourceUri) = ParseSource(sourceHtml);
 844             post.Source = string.Intern(sourceText);
 845             post.SourceUri = sourceUri;
 846
 847             post.IsReply = post.ReplyToList.Contains(_uname);
 848             post.IsExcludeReply = false;
 849
 850             if (post.IsMe)
 851             {
 852                 post.IsOwl = false;
 853             }
 854             else
 855             {
 856                 if (followerId.Count > 0) post.IsOwl = !followerId.Contains(post.UserId);
 857             }
 858
 859             post.IsDm = false;
 860             return post;
 861         }
 862
 863         /// <summary>
 864         /// ツイートに含まれる引用ツイートのURLからステータスIDを抽出
 865         /// </summary>
 866         public static IEnumerable<long> GetQuoteTweetStatusIds(IEnumerable<TwitterEntity> entities)
 867         {
 868             var urls = entities.OfType<TwitterEntityUrl>().Select(x => x.ExpandedUrl);
 869
 870             return GetQuoteTweetStatusIds(urls);
 871         }
 872
 873         public static IEnumerable<long> GetQuoteTweetStatusIds(IEnumerable<string> urls)
 874         {
 875             foreach (var url in urls)
 876             {
 877                 var match = Twitter.StatusUrlRegex.Match(url);
 878                 if (match.Success)
 879                 {
 880                     if (long.TryParse(match.Groups["StatusId"].Value, out var statusId))
 881                         yield return statusId;
 882                 }
 883             }
 884         }
 885
 886         private long? CreatePostsFromJson(TwitterStatus[] items, MyCommon.WORKERTYPE gType, TabModel tab, bool read)
 887         {
 888             long? minimumId = null;
 889
 890             foreach (var status in items)
 891             {
 892                 if (minimumId == null || minimumId.Value > status.Id)
 893                     minimumId = status.Id;
 894
 895                 //二重取得回避
 896                 lock (LockObj)
 897                 {
 898                     if (tab == null)
 899                     {
 900                         if (TabInformations.GetInstance().ContainsKey(status.Id)) continue;
 901                     }
 902                     else
 903                     {
 904                         if (tab.Contains(status.Id)) continue;
 905                     }
 906                 }
 907
 908                 //RT禁止ユーザーによるもの
 909                 if (gType != MyCommon.WORKERTYPE.UserTimeline &&
 910                     status.RetweetedStatus != null && this.noRTId.Contains(status.User.Id)) continue;
 911
 912                 var post = CreatePostsFromStatusData(status);
 913
 914                 post.IsRead = read;
 915                 if (post.IsMe && !read && _readOwnPost) post.IsRead = true;
 916
 917                 if (tab != null && tab.IsInnerStorageTabType)
 918                     tab.AddPostQueue(post);
 919                 else
 920                     TabInformations.GetInstance().AddPost(post);
 921             }
 922
 923             return minimumId;
 924         }
 925
 926         private long? CreatePostsFromSearchJson(TwitterSearchResult items, PublicSearchTabModel tab, bool read, bool more)
 927         {
 928             long? minimumId = null;
 929
 930             foreach (var status in items.Statuses)
 931             {
 932                 if (minimumId == null || minimumId.Value > status.Id)
 933                     minimumId = status.Id;
 934
 935                 if (!more && status.Id > tab.SinceId) tab.SinceId = status.Id;
 936                 //二重取得回避
 937                 lock (LockObj)
 938                 {
 939                     if (tab.Contains(status.Id)) continue;
 940                 }
 941
 942                 var post = CreatePostsFromStatusData(status);
 943
 944                 post.IsRead = read;
 945                 if ((post.IsMe && !read) && this._readOwnPost) post.IsRead = true;
 946
 947                 tab.AddPostQueue(post);
 948             }
 949
 950             return minimumId;
 951         }
 952
 953         private long? CreateFavoritePostsFromJson(TwitterStatus[] items, bool read)
 954         {
 955             var favTab = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);
 956             long? minimumId = null;
 957
 958             foreach (var status in items)
 959             {
 960                 if (minimumId == null || minimumId.Value > status.Id)
 961                     minimumId = status.Id;
 962
 963                 //二重取得回避
 964                 lock (LockObj)
 965                 {
 966                     if (favTab.Contains(status.Id)) continue;
 967                 }
 968
 969                 var post = CreatePostsFromStatusData(status, true);
 970
 971                 post.IsRead = read;
 972
 973                 TabInformations.GetInstance().AddPost(post);
 974             }
 975
 976             return minimumId;
 977         }
 978
 979         public async Task GetListStatus(bool read, ListTimelineTabModel tab, bool more, bool startup)
 980         {
 981             var count = GetApiResultCount(MyCommon.WORKERTYPE.List, more, startup);
 982
 983             TwitterStatus[] statuses;
 984             if (more)
 985             {
 986                 statuses = await this.Api.ListsStatuses(tab.ListInfo.Id, count, maxId: tab.OldestId, includeRTs: SettingManager.Common.IsListsIncludeRts)
 987                     .ConfigureAwait(false);
 988             }
 989             else
 990             {
 991                 statuses = await this.Api.ListsStatuses(tab.ListInfo.Id, count, includeRTs: SettingManager.Common.IsListsIncludeRts)
 992                     .ConfigureAwait(false);
 993             }
 994
 995             var minimumId = CreatePostsFromJson(statuses, MyCommon.WORKERTYPE.List, tab, read);
 996
 997             if (minimumId != null && minimumId.Value < tab.OldestId)
 998                 tab.OldestId = minimumId.Value;
 999         }
1000
1001         /// <summary>
1002         /// startStatusId からリプライ先の発言を辿る。発言は posts 以外からは検索しない。
1003         /// </summary>
1004         /// <returns>posts の中から検索されたリプライチェインの末端</returns>
1005         internal static PostClass FindTopOfReplyChain(IDictionary<Int64, PostClass> posts, Int64 startStatusId)
1006         {
1007             if (!posts.ContainsKey(startStatusId))
1008                 throw new ArgumentException("startStatusId (" + startStatusId + ") が posts の中から見つかりませんでした。", nameof(startStatusId));
1009
1010             var nextPost = posts[startStatusId];
1011             while (nextPost.InReplyToStatusId != null)
1012             {
1013                 if (!posts.ContainsKey(nextPost.InReplyToStatusId.Value))
1014                     break;
1015                 nextPost = posts[nextPost.InReplyToStatusId.Value];
1016             }
1017
1018             return nextPost;
1019         }
1020
1021         public async Task GetRelatedResult(bool read, RelatedPostsTabModel tab)
1022         {
1023             var targetPost = tab.TargetPost;
1024             var relPosts = new Dictionary<Int64, PostClass>();
1025             if (targetPost.TextFromApi.Contains("@") && targetPost.InReplyToStatusId == null)
1026             {
1027                 //検索結果対応
1028                 var p = TabInformations.GetInstance()[targetPost.StatusId];
1029                 if (p != null && p.InReplyToStatusId != null)
1030                 {
1031                     targetPost = p;
1032                 }
1033                 else
1034                 {
1035                     p = await this.GetStatusApi(read, targetPost.StatusId)
1036                         .ConfigureAwait(false);
1037                     targetPost = p;
1038                 }
1039             }
1040             relPosts.Add(targetPost.StatusId, targetPost);
1041
1042             Exception lastException = null;
1043
1044             // in_reply_to_status_id を使用してリプライチェインを辿る
1045             var nextPost = FindTopOfReplyChain(relPosts, targetPost.StatusId);
1046             var loopCount = 1;
1047             while (nextPost.InReplyToStatusId != null && loopCount++ <= 20)
1048             {
1049                 var inReplyToId = nextPost.InReplyToStatusId.Value;
1050
1051                 var inReplyToPost = TabInformations.GetInstance()[inReplyToId];
1052                 if (inReplyToPost == null)
1053                 {
1054                     try
1055                     {
1056                         inReplyToPost = await this.GetStatusApi(read, inReplyToId)
1057                             .ConfigureAwait(false);
1058                     }
1059                     catch (WebApiException ex)
1060                     {
1061                         lastException = ex;
1062                         break;
1063                     }
1064                 }
1065
1066                 relPosts.Add(inReplyToPost.StatusId, inReplyToPost);
1067
1068                 nextPost = FindTopOfReplyChain(relPosts, nextPost.StatusId);
1069             }
1070
1071             //MRTとかに対応のためツイート内にあるツイートを指すURLを取り込む
1072             var text = targetPost.Text;
1073             var ma = Twitter.StatusUrlRegex.Matches(text).Cast<Match>()
1074                 .Concat(Twitter.ThirdPartyStatusUrlRegex.Matches(text).Cast<Match>());
1075             foreach (var _match in ma)
1076             {
1077                 if (Int64.TryParse(_match.Groups["StatusId"].Value, out var _statusId))
1078                 {
1079                     if (relPosts.ContainsKey(_statusId))
1080                         continue;
1081
1082                     var p = TabInformations.GetInstance()[_statusId];
1083                     if (p == null)
1084                     {
1085                         try
1086                         {
1087                             p = await this.GetStatusApi(read, _statusId)
1088                                 .ConfigureAwait(false);
1089                         }
1090                         catch (WebApiException ex)
1091                         {
1092                             lastException = ex;
1093                             break;
1094                         }
1095                     }
1096
1097                     if (p != null)
1098                         relPosts.Add(p.StatusId, p);
1099                 }
1100             }
1101
1102             relPosts.Values.ToList().ForEach(p =>
1103             {
1104                 if (p.IsMe && !read && this._readOwnPost)
1105                     p.IsRead = true;
1106                 else
1107                     p.IsRead = read;
1108
1109                 tab.AddPostQueue(p);
1110             });
1111
1112             if (lastException != null)
1113                 throw new WebApiException(lastException.Message, lastException);
1114         }
1115
1116         public async Task GetSearch(bool read, PublicSearchTabModel tab, bool more)
1117         {
1118             var count = GetApiResultCount(MyCommon.WORKERTYPE.PublicSearch, more, false);
1119
1120             long? maxId = null;
1121             long? sinceId = null;
1122             if (more)
1123             {
1124                 maxId = tab.OldestId - 1;
1125             }
1126             else
1127             {
1128                 sinceId = tab.SinceId;
1129             }
1130
1131             var searchResult = await this.Api.SearchTweets(tab.SearchWords, tab.SearchLang, count, maxId, sinceId)
1132                 .ConfigureAwait(false);
1133
1134             if (!TabInformations.GetInstance().ContainsTab(tab))
1135                 return;
1136
1137             var minimumId = this.CreatePostsFromSearchJson(searchResult, tab, read, more);
1138
1139             if (minimumId != null && minimumId.Value < tab.OldestId)
1140                 tab.OldestId = minimumId.Value;
1141         }
1142
1143         private void CreateDirectMessagesFromJson(TwitterDirectMessage[] item, MyCommon.WORKERTYPE gType, bool read)
1144         {
1145             foreach (var message in item)
1146             {
1147                 var post = new PostClass();
1148                 try
1149                 {
1150                     post.StatusId = message.Id;
1151                     if (gType != MyCommon.WORKERTYPE.UserStream)
1152                     {
1153                         if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
1154                         {
1155                             if (minDirectmessage > post.StatusId) minDirectmessage = post.StatusId;
1156                         }
1157                         else
1158                         {
1159                             if (minDirectmessageSent > post.StatusId) minDirectmessageSent = post.StatusId;
1160                         }
1161                     }
1162
1163                     //二重取得回避
1164                     lock (LockObj)
1165                     {
1166                         if (TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.DirectMessage).Contains(post.StatusId)) continue;
1167                     }
1168                     //sender_id
1169                     //recipient_id
1170                     post.CreatedAt = MyCommon.DateTimeParse(message.CreatedAt);
1171                     //本文
1172                     var textFromApi = message.Text;
1173                     //HTMLに整形
1174                     post.Text = CreateHtmlAnchor(textFromApi, post.ReplyToList, message.Entities, post.Media);
1175                     post.TextFromApi = this.ReplaceTextFromApi(textFromApi, message.Entities);
1176                     post.TextFromApi = WebUtility.HtmlDecode(post.TextFromApi);
1177                     post.TextFromApi = post.TextFromApi.Replace("<3", "\u2661");
1178                     post.AccessibleText = this.CreateAccessibleText(textFromApi, message.Entities, quoteStatus: null);
1179                     post.AccessibleText = WebUtility.HtmlDecode(post.AccessibleText);
1180                     post.AccessibleText = post.AccessibleText.Replace("<3", "\u2661");
1181                     post.IsFav = false;
1182
1183                     post.QuoteStatusIds = GetQuoteTweetStatusIds(message.Entities).Distinct().ToArray();
1184
1185                     post.ExpandedUrls = message.Entities.OfType<TwitterEntityUrl>()
1186                         .Select(x => new PostClass.ExpandedUrlInfo(x.Url, x.ExpandedUrl))
1187                         .ToArray();
1188
1189                     //以下、ユーザー情報
1190                     TwitterUser user;
1191                     if (gType == MyCommon.WORKERTYPE.UserStream)
1192                     {
1193                         if (this.Api.CurrentUserId == message.Recipient.Id)
1194                         {
1195                             user = message.Sender;
1196                             post.IsMe = false;
1197                             post.IsOwl = true;
1198                         }
1199                         else
1200                         {
1201                             user = message.Recipient;
1202                             post.IsMe = true;
1203                             post.IsOwl = false;
1204                         }
1205                     }
1206                     else
1207                     {
1208                         if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
1209                         {
1210                             user = message.Sender;
1211                             post.IsMe = false;
1212                             post.IsOwl = true;
1213                         }
1214                         else
1215                         {
1216                             user = message.Recipient;
1217                             post.IsMe = true;
1218                             post.IsOwl = false;
1219                         }
1220                     }
1221
1222                     post.UserId = user.Id;
1223                     post.ScreenName = user.ScreenName;
1224                     post.Nickname = user.Name.Trim();
1225                     post.ImageUrl = user.ProfileImageUrlHttps;
1226                     post.IsProtect = user.Protected;
1227
1228                     // メモリ使用量削減 (同一のテキストであれば同一の string インスタンスを参照させる)
1229                     if (post.Text == post.TextFromApi)
1230                         post.Text = post.TextFromApi;
1231                     if (post.AccessibleText == post.TextFromApi)
1232                         post.AccessibleText = post.TextFromApi;
1233
1234                     // 他の発言と重複しやすい (共通化できる) 文字列は string.Intern を通す
1235                     post.ScreenName = string.Intern(post.ScreenName);
1236                     post.Nickname = string.Intern(post.Nickname);
1237                     post.ImageUrl = string.Intern(post.ImageUrl);
1238                 }
1239                 catch(Exception ex)
1240                 {
1241                     MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name);
1242                     MessageBox.Show("Parse Error(CreateDirectMessagesFromJson)");
1243                     continue;
1244                 }
1245
1246                 post.IsRead = read;
1247                 if (post.IsMe && !read && _readOwnPost) post.IsRead = true;
1248                 post.IsReply = false;
1249                 post.IsExcludeReply = false;
1250                 post.IsDm = true;
1251
1252                 var dmTab = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.DirectMessage);
1253                 dmTab.AddPostQueue(post);
1254             }
1255         }
1256
1257         public async Task GetDirectMessageApi(bool read, MyCommon.WORKERTYPE gType, bool more)
1258         {
1259             this.CheckAccountState();
1260             this.CheckAccessLevel(TwitterApiAccessLevel.ReadWriteAndDirectMessage);
1261
1262             var count = GetApiResultCount(gType, more, false);
1263
1264             TwitterDirectMessage[] messages;
1265             if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
1266             {
1267                 if (more)
1268                 {
1269                     messages = await this.Api.DirectMessagesRecv(count, maxId: this.minDirectmessage)
1270                         .ConfigureAwait(false);
1271                 }
1272                 else
1273                 {
1274                     messages = await this.Api.DirectMessagesRecv(count)
1275                         .ConfigureAwait(false);
1276                 }
1277             }
1278             else
1279             {
1280                 if (more)
1281                 {
1282                     messages = await this.Api.DirectMessagesSent(count, maxId: this.minDirectmessageSent)
1283                         .ConfigureAwait(false);
1284                 }
1285                 else
1286                 {
1287                     messages = await this.Api.DirectMessagesSent(count)
1288                         .ConfigureAwait(false);
1289                 }
1290             }
1291
1292             CreateDirectMessagesFromJson(messages, gType, read);
1293         }
1294
1295         public async Task GetFavoritesApi(bool read, FavoritesTabModel tab, bool backward)
1296         {
1297             this.CheckAccountState();
1298
1299             var count = GetApiResultCount(MyCommon.WORKERTYPE.Favorites, backward, false);
1300
1301             TwitterStatus[] statuses;
1302             if (backward)
1303             {
1304                 statuses = await this.Api.FavoritesList(count, maxId: tab.OldestId)
1305                     .ConfigureAwait(false);
1306             }
1307             else
1308             {
1309                 statuses = await this.Api.FavoritesList(count)
1310                     .ConfigureAwait(false);
1311             }
1312
1313             var minimumId = this.CreateFavoritePostsFromJson(statuses, read);
1314
1315             if (minimumId != null && minimumId.Value < tab.OldestId)
1316                 tab.OldestId = minimumId.Value;
1317         }
1318
1319         private string ReplaceTextFromApi(string text, TwitterEntities entities)
1320         {
1321             if (entities != null)
1322             {
1323                 if (entities.Urls != null)
1324                 {
1325                     foreach (var m in entities.Urls)
1326                     {
1327                         if (!string.IsNullOrEmpty(m.DisplayUrl)) text = text.Replace(m.Url, m.DisplayUrl);
1328                     }
1329                 }
1330                 if (entities.Media != null)
1331                 {
1332                     foreach (var m in entities.Media)
1333                     {
1334                         if (!string.IsNullOrEmpty(m.DisplayUrl)) text = text.Replace(m.Url, m.DisplayUrl);
1335                     }
1336                 }
1337             }
1338             return text;
1339         }
1340
1341         private string CreateAccessibleText(string text, TwitterEntities entities, TwitterStatus quoteStatus)
1342         {
1343             if (entities == null)
1344                 return text;
1345
1346             if (entities.Urls != null)
1347             {
1348                 foreach (var entity in entities.Urls)
1349                 {
1350                     if (quoteStatus != null)
1351                     {
1352                         var matchStatusUrl = Twitter.StatusUrlRegex.Match(entity.ExpandedUrl);
1353                         if (matchStatusUrl.Success && matchStatusUrl.Groups["StatusId"].Value == quoteStatus.IdStr)
1354                         {
1355                             var quoteText = this.CreateAccessibleText(quoteStatus.FullText, quoteStatus.MergedEntities, quoteStatus: null);
1356                             text = text.Replace(entity.Url, string.Format(Properties.Resources.QuoteStatus_AccessibleText, quoteStatus.User.ScreenName, quoteText));
1357                         }
1358                     }
1359                     else if (!string.IsNullOrEmpty(entity.DisplayUrl))
1360                     {
1361                         text = text.Replace(entity.Url, entity.DisplayUrl);
1362                     }
1363                 }
1364             }
1365
1366             if (entities.Media != null)
1367             {
1368                 foreach (var entity in entities.Media)
1369                 {
1370                     if (!string.IsNullOrEmpty(entity.AltText))
1371                     {
1372                         text = text.Replace(entity.Url, string.Format(Properties.Resources.ImageAltText, entity.AltText));
1373                     }
1374                     else if (!string.IsNullOrEmpty(entity.DisplayUrl))
1375                     {
1376                         text = text.Replace(entity.Url, entity.DisplayUrl);
1377                     }
1378                 }
1379             }
1380
1381             return text;
1382         }
1383
1384         /// <summary>
1385         /// フォロワーIDを更新します
1386         /// </summary>
1387         /// <exception cref="WebApiException"/>
1388         public async Task RefreshFollowerIds()
1389         {
1390             if (MyCommon._endingFlag) return;
1391
1392             var cursor = -1L;
1393             var newFollowerIds = new HashSet<long>();
1394             do
1395             {
1396                 var ret = await this.Api.FollowersIds(cursor)
1397                     .ConfigureAwait(false);
1398
1399                 if (ret.Ids == null)
1400                     throw new WebApiException("ret.ids == null");
1401
1402                 newFollowerIds.UnionWith(ret.Ids);
1403                 cursor = ret.NextCursor;
1404             } while (cursor != 0);
1405
1406             this.followerId = newFollowerIds;
1407             TabInformations.GetInstance().RefreshOwl(this.followerId);
1408
1409             this._GetFollowerResult = true;
1410         }
1411
1412         public bool GetFollowersSuccess
1413         {
1414             get
1415             {
1416                 return _GetFollowerResult;
1417             }
1418         }
1419
1420         /// <summary>
1421         /// RT 非表示ユーザーを更新します
1422         /// </summary>
1423         /// <exception cref="WebApiException"/>
1424         public async Task RefreshNoRetweetIds()
1425         {
1426             if (MyCommon._endingFlag) return;
1427
1428             this.noRTId = await this.Api.NoRetweetIds()
1429                 .ConfigureAwait(false);
1430
1431             this._GetNoRetweetResult = true;
1432         }
1433
1434         public bool GetNoRetweetSuccess
1435         {
1436             get
1437             {
1438                 return _GetNoRetweetResult;
1439             }
1440         }
1441
1442         /// <summary>
1443         /// t.co の文字列長などの設定情報を更新します
1444         /// </summary>
1445         /// <exception cref="WebApiException"/>
1446         public async Task RefreshConfiguration()
1447         {
1448             this.Configuration = await this.Api.Configuration()
1449                 .ConfigureAwait(false);
1450         }
1451
1452         public async Task GetListsApi()
1453         {
1454             this.CheckAccountState();
1455
1456             var ownedLists = await TwitterLists.GetAllItemsAsync(x =>
1457                 this.Api.ListsOwnerships(this.Username, cursor: x, count: 1000))
1458                     .ConfigureAwait(false);
1459
1460             var subscribedLists = await TwitterLists.GetAllItemsAsync(x =>
1461                 this.Api.ListsSubscriptions(this.Username, cursor: x, count: 1000))
1462                     .ConfigureAwait(false);
1463
1464             TabInformations.GetInstance().SubscribableLists = Enumerable.Concat(ownedLists, subscribedLists)
1465                 .Select(x => new ListElement(x, this))
1466                 .ToList();
1467         }
1468
1469         public async Task DeleteList(long listId)
1470         {
1471             await this.Api.ListsDestroy(listId)
1472                 .IgnoreResponse()
1473                 .ConfigureAwait(false);
1474
1475             var tabinfo = TabInformations.GetInstance();
1476
1477             tabinfo.SubscribableLists = tabinfo.SubscribableLists
1478                 .Where(x => x.Id != listId)
1479                 .ToList();
1480         }
1481
1482         public async Task<ListElement> EditList(long listId, string new_name, bool isPrivate, string description)
1483         {
1484             var response = await this.Api.ListsUpdate(listId, new_name, description, isPrivate)
1485                 .ConfigureAwait(false);
1486
1487             var list = await response.LoadJsonAsync()
1488                 .ConfigureAwait(false);
1489
1490             return new ListElement(list, this);
1491         }
1492
1493         public async Task<long> GetListMembers(long listId, List<UserInfo> lists, long cursor)
1494         {
1495             this.CheckAccountState();
1496
1497             var users = await this.Api.ListsMembers(listId, cursor)
1498                 .ConfigureAwait(false);
1499
1500             Array.ForEach(users.Users, u => lists.Add(new UserInfo(u)));
1501
1502             return users.NextCursor;
1503         }
1504
1505         public async Task CreateListApi(string listName, bool isPrivate, string description)
1506         {
1507             this.CheckAccountState();
1508
1509             var response = await this.Api.ListsCreate(listName, description, isPrivate)
1510                 .ConfigureAwait(false);
1511
1512             var list = await response.LoadJsonAsync()
1513                 .ConfigureAwait(false);
1514
1515             TabInformations.GetInstance().SubscribableLists.Add(new ListElement(list, this));
1516         }
1517
1518         public async Task<bool> ContainsUserAtList(long listId, string user)
1519         {
1520             this.CheckAccountState();
1521
1522             try
1523             {
1524                 await this.Api.ListsMembersShow(listId, user)
1525                     .ConfigureAwait(false);
1526
1527                 return true;
1528             }
1529             catch (TwitterApiException ex)
1530                 when (ex.ErrorResponse.Errors.Any(x => x.Code == TwitterErrorCode.NotFound))
1531             {
1532                 return false;
1533             }
1534         }
1535
1536         public string CreateHtmlAnchor(string text, List<string> AtList, TwitterEntities entities, List<MediaInfo> media)
1537         {
1538             if (entities != null)
1539             {
1540                 if (entities.Hashtags != null)
1541                 {
1542                     lock (this.LockObj)
1543                     {
1544                         this._hashList.AddRange(entities.Hashtags.Select(x => "#" + x.Text));
1545                     }
1546                 }
1547                 if (entities.UserMentions != null)
1548                 {
1549                     foreach (var ent in entities.UserMentions)
1550                     {
1551                         var screenName = ent.ScreenName.ToLowerInvariant();
1552                         if (!AtList.Contains(screenName))
1553                             AtList.Add(screenName);
1554                     }
1555                 }
1556                 if (entities.Media != null)
1557                 {
1558                     if (media != null)
1559                     {
1560                         foreach (var ent in entities.Media)
1561                         {
1562                             if (!media.Any(x => x.Url == ent.MediaUrl))
1563                             {
1564                                 if (ent.VideoInfo != null &&
1565                                     ent.Type == "animated_gif" || ent.Type == "video")
1566                                 {
1567                                     //var videoUrl = ent.VideoInfo.Variants
1568                                     //    .Where(v => v.ContentType == "video/mp4")
1569                                     //    .OrderByDescending(v => v.Bitrate)
1570                                     //    .Select(v => v.Url).FirstOrDefault();
1571                                     media.Add(new MediaInfo(ent.MediaUrl, ent.AltText, ent.ExpandedUrl));
1572                                 }
1573                                 else
1574                                     media.Add(new MediaInfo(ent.MediaUrl, ent.AltText, videoUrl: null));
1575                             }
1576                         }
1577                     }
1578                 }
1579             }
1580
1581             // PostClass.ExpandedUrlInfo を使用して非同期に URL 展開を行うためここでは expanded_url を使用しない
1582             text = TweetFormatter.AutoLinkHtml(text, entities, keepTco: true);
1583
1584             text = Regex.Replace(text, "(^|[^a-zA-Z0-9_/&#＃@＠>=.~])(sm|nm)([0-9]{1,10})", "$1<a href=\"http://www.nicovideo.jp/watch/$2$3\">$2$3</a>");
1585             text = PreProcessUrl(text); //IDN置換
1586
1587             return text;
1588         }
1589
1590         private static readonly Uri SourceUriBase = new Uri("https://twitter.com/");
1591
1592         /// <summary>
1593         /// Twitter APIから得たHTML形式のsource文字列を分析し、source名とURLに分離します
1594         /// </summary>
1595         internal static (string SourceText, Uri SourceUri) ParseSource(string sourceHtml)
1596         {
1597             if (string.IsNullOrEmpty(sourceHtml))
1598                 return ("", null);
1599
1600             string sourceText;
1601             Uri sourceUri;
1602
1603             // sourceHtmlの例: <a href="http://twitter.com" rel="nofollow">Twitter Web Client</a>
1604
1605             var match = Regex.Match(sourceHtml, "^<a href=\"(?<uri>.+?)\".*?>(?<text>.+)</a>$", RegexOptions.IgnoreCase);
1606             if (match.Success)
1607             {
1608                 sourceText = WebUtility.HtmlDecode(match.Groups["text"].Value);
1609                 try
1610                 {
1611                     var uriStr = WebUtility.HtmlDecode(match.Groups["uri"].Value);
1612                     sourceUri = new Uri(SourceUriBase, uriStr);
1613                 }
1614                 catch (UriFormatException)
1615                 {
1616                     sourceUri = null;
1617                 }
1618             }
1619             else
1620             {
1621                 sourceText = WebUtility.HtmlDecode(sourceHtml);
1622                 sourceUri = null;
1623             }
1624
1625             return (sourceText, sourceUri);
1626         }
1627
1628         public async Task<TwitterApiStatus> GetInfoApi()
1629         {
1630             if (Twitter.AccountState != MyCommon.ACCOUNT_STATE.Valid) return null;
1631
1632             if (MyCommon._endingFlag) return null;
1633
1634             var limits = await this.Api.ApplicationRateLimitStatus()
1635                 .ConfigureAwait(false);
1636
1637             MyCommon.TwitterApiInfo.UpdateFromJson(limits);
1638
1639             return MyCommon.TwitterApiInfo;
1640         }
1641
1642         /// <summary>
1643         /// ブロック中のユーザーを更新します
1644         /// </summary>
1645         /// <exception cref="WebApiException"/>
1646         public async Task RefreshBlockIds()
1647         {
1648             if (MyCommon._endingFlag) return;
1649
1650             var cursor = -1L;
1651             var newBlockIds = new HashSet<long>();
1652             do
1653             {
1654                 var ret = await this.Api.BlocksIds(cursor)
1655                     .ConfigureAwait(false);
1656
1657                 newBlockIds.UnionWith(ret.Ids);
1658                 cursor = ret.NextCursor;
1659             } while (cursor != 0);
1660
1661             newBlockIds.Remove(this.UserId); // 元のソースにあったので一応残しておく
1662
1663             TabInformations.GetInstance().BlockIds = newBlockIds;
1664         }
1665
1666         /// <summary>
1667         /// ミュート中のユーザーIDを更新します
1668         /// </summary>
1669         /// <exception cref="WebApiException"/>
1670         public async Task RefreshMuteUserIdsAsync()
1671         {
1672             if (MyCommon._endingFlag) return;
1673
1674             var ids = await TwitterIds.GetAllItemsAsync(x => this.Api.MutesUsersIds(x))
1675                 .ConfigureAwait(false);
1676
1677             TabInformations.GetInstance().MuteUserIds = new HashSet<long>(ids);
1678         }
1679
1680         public string[] GetHashList()
1681         {
1682             string[] hashArray;
1683             lock (LockObj)
1684             {
1685                 hashArray = _hashList.ToArray();
1686                 _hashList.Clear();
1687             }
1688             return hashArray;
1689         }
1690
1691         public string AccessToken
1692             => ((TwitterApiConnection)this.Api.Connection).AccessToken;
1693
1694         public string AccessTokenSecret
1695             => ((TwitterApiConnection)this.Api.Connection).AccessSecret;
1696
1697         private void CheckAccountState()
1698         {
1699             if (Twitter.AccountState != MyCommon.ACCOUNT_STATE.Valid)
1700                 throw new WebApiException("Auth error. Check your account");
1701         }
1702
1703         private void CheckAccessLevel(TwitterApiAccessLevel accessLevelFlags)
1704         {
1705             if (!this.AccessLevel.HasFlag(accessLevelFlags))
1706                 throw new WebApiException("Auth Err:try to re-authorization.");
1707         }
1708
1709         public int GetTextLengthRemain(string postText)
1710         {
1711             var matchDm = Twitter.DMSendTextRegex.Match(postText);
1712             if (matchDm.Success)
1713                 return this.GetTextLengthRemainInternal(matchDm.Groups["body"].Value, isDm: true);
1714
1715             return this.GetTextLengthRemainInternal(postText, isDm: false);
1716         }
1717
1718         private int GetTextLengthRemainInternal(string postText, bool isDm)
1719         {
1720             var textLength = 0;
1721
1722             var pos = 0;
1723             while (pos < postText.Length)
1724             {
1725                 textLength++;
1726
1727                 if (char.IsSurrogatePair(postText, pos))
1728                     pos += 2; // サロゲートペアの場合は2文字分進める
1729                 else
1730                     pos++;
1731             }
1732
1733             var urls = TweetExtractor.ExtractUrls(postText);
1734             foreach (var url in urls)
1735             {
1736                 var shortUrlLength = url.StartsWith("https://", StringComparison.OrdinalIgnoreCase)
1737                     ? this.Configuration.ShortUrlLengthHttps
1738                     : this.Configuration.ShortUrlLength;
1739
1740                 textLength += shortUrlLength - url.Length;
1741             }
1742
1743             if (isDm)
1744                 return this.Configuration.DmTextCharacterLimit - textLength;
1745             else
1746                 return 140 - textLength;
1747         }
1748
1749
1750 #region "UserStream"
1751         private string trackWord_ = "";
1752         public string TrackWord
1753         {
1754             get
1755             {
1756                 return trackWord_;
1757             }
1758             set
1759             {
1760                 trackWord_ = value;
1761             }
1762         }
1763         private bool allAtReply_ = false;
1764         public bool AllAtReply
1765         {
1766             get
1767             {
1768                 return allAtReply_;
1769             }
1770             set
1771             {
1772                 allAtReply_ = value;
1773             }
1774         }
1775
1776         public event EventHandler NewPostFromStream;
1777         public event EventHandler UserStreamStarted;
1778         public event EventHandler UserStreamStopped;
1779         public event EventHandler<PostDeletedEventArgs> PostDeleted;
1780         public event EventHandler<UserStreamEventReceivedEventArgs> UserStreamEventReceived;
1781         private DateTime _lastUserstreamDataReceived;
1782         private TwitterUserstream userStream;
1783
1784         public class FormattedEvent
1785         {
1786             public MyCommon.EVENTTYPE Eventtype { get; set; }
1787             public DateTime CreatedAt { get; set; }
1788             public string Event { get; set; }
1789             public string Username { get; set; }
1790             public string Target { get; set; }
1791             public Int64 Id { get; set; }
1792             public bool IsMe { get; set; }
1793         }
1794
1795         public List<FormattedEvent> storedEvent_ = new List<FormattedEvent>();
1796         public List<FormattedEvent> StoredEvent
1797         {
1798             get
1799             {
1800                 return storedEvent_;
1801             }
1802             set
1803             {
1804                 storedEvent_ = value;
1805             }
1806         }
1807
1808         private readonly IReadOnlyDictionary<string, MyCommon.EVENTTYPE> eventTable = new Dictionary<string, MyCommon.EVENTTYPE>
1809         {
1810             ["favorite"] = MyCommon.EVENTTYPE.Favorite,
1811             ["unfavorite"] = MyCommon.EVENTTYPE.Unfavorite,
1812             ["follow"] = MyCommon.EVENTTYPE.Follow,
1813             ["list_member_added"] = MyCommon.EVENTTYPE.ListMemberAdded,
1814             ["list_member_removed"] = MyCommon.EVENTTYPE.ListMemberRemoved,
1815             ["block"] = MyCommon.EVENTTYPE.Block,
1816             ["unblock"] = MyCommon.EVENTTYPE.Unblock,
1817             ["user_update"] = MyCommon.EVENTTYPE.UserUpdate,
1818             ["deleted"] = MyCommon.EVENTTYPE.Deleted,
1819             ["list_created"] = MyCommon.EVENTTYPE.ListCreated,
1820             ["list_destroyed"] = MyCommon.EVENTTYPE.ListDestroyed,
1821             ["list_updated"] = MyCommon.EVENTTYPE.ListUpdated,
1822             ["unfollow"] = MyCommon.EVENTTYPE.Unfollow,
1823             ["list_user_subscribed"] = MyCommon.EVENTTYPE.ListUserSubscribed,
1824             ["list_user_unsubscribed"] = MyCommon.EVENTTYPE.ListUserUnsubscribed,
1825             ["mute"] = MyCommon.EVENTTYPE.Mute,
1826             ["unmute"] = MyCommon.EVENTTYPE.Unmute,
1827             ["quoted_tweet"] = MyCommon.EVENTTYPE.QuotedTweet,
1828         };
1829
1830         public bool IsUserstreamDataReceived
1831         {
1832             get
1833             {
1834                 return DateTime.Now.Subtract(this._lastUserstreamDataReceived).TotalSeconds < 31;
1835             }
1836         }
1837
1838         private void userStream_StatusArrived(string line)
1839         {
1840             this._lastUserstreamDataReceived = DateTime.Now;
1841             if (string.IsNullOrEmpty(line)) return;
1842
1843             if (line.First() != '{' || line.Last() != '}')
1844             {
1845                 MyCommon.TraceOut("Invalid JSON (StatusArrived):" + Environment.NewLine + line);
1846                 return;
1847             }
1848
1849             var isDm = false;
1850
1851             try
1852             {
1853                 using (var jsonReader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(line), XmlDictionaryReaderQuotas.Max))
1854                 {
1855                     var xElm = XElement.Load(jsonReader);
1856                     if (xElm.Element("friends") != null)
1857                     {
1858                         Debug.WriteLine("friends");
1859                         return;
1860                     }
1861                     else if (xElm.Element("delete") != null)
1862                     {
1863                         Debug.WriteLine("delete");
1864                         Int64 id;
1865                         XElement idElm;
1866                         if ((idElm = xElm.Element("delete").Element("direct_message")?.Element("id")) != null)
1867                         {
1868                             id = 0;
1869                             long.TryParse(idElm.Value, out id);
1870
1871                             this.PostDeleted?.Invoke(this, new PostDeletedEventArgs(id));
1872                         }
1873                         else if ((idElm = xElm.Element("delete").Element("status")?.Element("id")) != null)
1874                         {
1875                             id = 0;
1876                             long.TryParse(idElm.Value, out id);
1877
1878                             this.PostDeleted?.Invoke(this, new PostDeletedEventArgs(id));
1879                         }
1880                         else
1881                         {
1882                             MyCommon.TraceOut("delete:" + line);
1883                             return;
1884                         }
1885                         for (int i = this.StoredEvent.Count - 1; i >= 0; i--)
1886                         {
1887                             var sEvt = this.StoredEvent[i];
1888                             if (sEvt.Id == id && (sEvt.Event == "favorite" || sEvt.Event == "unfavorite"))
1889                             {
1890                                 this.StoredEvent.RemoveAt(i);
1891                             }
1892                         }
1893                         return;
1894                     }
1895                     else if (xElm.Element("limit") != null)
1896                     {
1897                         Debug.WriteLine(line);
1898                         return;
1899                     }
1900                     else if (xElm.Element("event") != null)
1901                     {
1902                         Debug.WriteLine("event: " + xElm.Element("event").Value);
1903                         CreateEventFromJson(line);
1904                         return;
1905                     }
1906                     else if (xElm.Element("direct_message") != null)
1907                     {
1908                         Debug.WriteLine("direct_message");
1909                         isDm = true;
1910                     }
1911                     else if (xElm.Element("retweeted_status") != null)
1912                     {
1913                         var sourceUserId = xElm.XPathSelectElement("/user/id_str").Value;
1914                         var targetUserId = xElm.XPathSelectElement("/retweeted_status/user/id_str").Value;
1915
1916                         // 自分に関係しないリツイートの場合は無視する
1917                         var selfUserId = this.UserId.ToString();
1918                         if (sourceUserId == selfUserId || targetUserId == selfUserId)
1919                         {
1920                             // 公式 RT をイベントとしても扱う
1921                             var evt = CreateEventFromRetweet(xElm);
1922                             if (evt != null)
1923                             {
1924                                 this.StoredEvent.Insert(0, evt);
1925
1926                                 this.UserStreamEventReceived?.Invoke(this, new UserStreamEventReceivedEventArgs(evt));
1927                             }
1928                         }
1929
1930                         // 従来通り公式 RT の表示も行うため return しない
1931                     }
1932                     else if (xElm.Element("scrub_geo") != null)
1933                     {
1934                         try
1935                         {
1936                             TabInformations.GetInstance().ScrubGeoReserve(long.Parse(xElm.Element("scrub_geo").Element("user_id").Value),
1937                                                                         long.Parse(xElm.Element("scrub_geo").Element("up_to_status_id").Value));
1938                         }
1939                         catch(Exception)
1940                         {
1941                             MyCommon.TraceOut("scrub_geo:" + line);
1942                         }
1943                         return;
1944                     }
1945                 }
1946
1947                 if (isDm)
1948                 {
1949                     try
1950                     {
1951                         var message = TwitterStreamEventDirectMessage.ParseJson(line).DirectMessage;
1952                         this.CreateDirectMessagesFromJson(new[] { message }, MyCommon.WORKERTYPE.UserStream, false);
1953                     }
1954                     catch (SerializationException ex)
1955                     {
1956                         throw TwitterApiException.CreateFromException(ex, line);
1957                     }
1958                 }
1959                 else
1960                 {
1961                     try
1962                     {
1963                         var status = TwitterStatusCompat.ParseJson(line);
1964                         this.CreatePostsFromJson(new[] { status.Normalize() }, MyCommon.WORKERTYPE.UserStream, null, false);
1965                     }
1966                     catch (SerializationException ex)
1967                     {
1968                         throw TwitterApiException.CreateFromException(ex, line);
1969                     }
1970                 }
1971             }
1972             catch (WebApiException ex)
1973             {
1974                 MyCommon.TraceOut(ex);
1975                 return;
1976             }
1977             catch (XmlException)
1978             {
1979                 MyCommon.TraceOut("XmlException (StatusArrived): " + line);
1980             }
1981             catch(NullReferenceException)
1982             {
1983                 MyCommon.TraceOut("NullRef StatusArrived: " + line);
1984             }
1985
1986             this.NewPostFromStream?.Invoke(this, EventArgs.Empty);
1987         }
1988
1989         /// <summary>
1990         /// UserStreamsから受信した公式RTをイベントに変換します
1991         /// </summary>
1992         private FormattedEvent CreateEventFromRetweet(XElement xElm)
1993         {
1994             return new FormattedEvent
1995             {
1996                 Eventtype = MyCommon.EVENTTYPE.Retweet,
1997                 Event = "retweet",
1998                 CreatedAt = MyCommon.DateTimeParse(xElm.XPathSelectElement("/created_at").Value),
1999                 IsMe = xElm.XPathSelectElement("/user/id_str").Value == this.UserId.ToString(),
2000                 Username = xElm.XPathSelectElement("/user/screen_name").Value,
2001                 Target = string.Format("@{0}:{1}", new[]
2002                 {
2003                     xElm.XPathSelectElement("/retweeted_status/user/screen_name").Value,
2004                     WebUtility.HtmlDecode(xElm.XPathSelectElement("/retweeted_status/text").Value),
2005                 }),
2006                 Id = long.Parse(xElm.XPathSelectElement("/retweeted_status/id_str").Value),
2007             };
2008         }
2009
2010         private void CreateEventFromJson(string content)
2011         {
2012             TwitterStreamEvent eventData = null;
2013             try
2014             {
2015                 eventData = TwitterStreamEvent.ParseJson(content);
2016             }
2017             catch(SerializationException ex)
2018             {
2019                 MyCommon.TraceOut(ex, "Event Serialize Exception!" + Environment.NewLine + content);
2020             }
2021             catch(Exception ex)
2022             {
2023                 MyCommon.TraceOut(ex, "Event Exception!" + Environment.NewLine + content);
2024             }
2025
2026             var evt = new FormattedEvent();
2027             evt.CreatedAt = MyCommon.DateTimeParse(eventData.CreatedAt);
2028             evt.Event = eventData.Event;
2029             evt.Username = eventData.Source.ScreenName;
2030             evt.IsMe = evt.Username.ToLowerInvariant().Equals(this.Username.ToLowerInvariant());
2031
2032             eventTable.TryGetValue(eventData.Event, out var eventType);
2033             evt.Eventtype = eventType;
2034
2035             TwitterStreamEvent<TwitterStatusCompat> tweetEvent;
2036             TwitterStatus tweet;
2037
2038             switch (eventData.Event)
2039             {
2040                 case "access_revoked":
2041                 case "access_unrevoked":
2042                 case "user_delete":
2043                 case "user_suspend":
2044                     return;
2045                 case "follow":
2046                     if (eventData.Target.ScreenName.ToLowerInvariant().Equals(_uname))
2047                     {
2048                         if (!this.followerId.Contains(eventData.Source.Id)) this.followerId.Add(eventData.Source.Id);
2049                     }
2050                     else
2051                     {
2052                         return;    //Block後のUndoをすると、SourceとTargetが逆転したfollowイベントが帰ってくるため。
2053                     }
2054                     evt.Target = "";
2055                     break;
2056                 case "unfollow":
2057                     evt.Target = "@" + eventData.Target.ScreenName;
2058                     break;
2059                 case "favorited_retweet":
2060                 case "retweeted_retweet":
2061                     return;
2062                 case "favorite":
2063                 case "unfavorite":
2064                     tweetEvent = TwitterStreamEvent<TwitterStatusCompat>.ParseJson(content);
2065                     tweet = tweetEvent.TargetObject.Normalize();
2066                     evt.Target = "@" + tweet.User.ScreenName + ":" + WebUtility.HtmlDecode(tweet.FullText);
2067                     evt.Id = tweet.Id;
2068
2069                     if (SettingManager.Common.IsRemoveSameEvent)
2070                     {
2071                         if (this.StoredEvent.Any(ev => ev.Username == evt.Username && ev.Eventtype == evt.Eventtype && ev.Target == evt.Target))
2072                             return;
2073                     }
2074
2075                     var tabinfo = TabInformations.GetInstance();
2076
2077                     var statusId = tweet.Id;
2078                     if (!tabinfo.Posts.TryGetValue(statusId, out var post))
2079                         break;
2080
2081                     if (eventData.Event == "favorite")
2082                     {
2083                         var favTab = tabinfo.GetTabByType(MyCommon.TabUsageType.Favorites);
2084                         favTab.AddPostQueue(post);
2085
2086                         if (tweetEvent.Source.Id == this.UserId)
2087                         {
2088                             post.IsFav = true;
2089                         }
2090                         else if (tweetEvent.Target.Id == this.UserId)
2091                         {
2092                             post.FavoritedCount++;
2093
2094                             if (SettingManager.Common.FavEventUnread)
2095                                 tabinfo.SetReadAllTab(post.StatusId, read: false);
2096                         }
2097                     }
2098                     else // unfavorite
2099                     {
2100                         if (tweetEvent.Source.Id == this.UserId)
2101                         {
2102                             post.IsFav = false;
2103                         }
2104                         else if (tweetEvent.Target.Id == this.UserId)
2105                         {
2106                             post.FavoritedCount = Math.Max(0, post.FavoritedCount - 1);
2107                         }
2108                     }
2109                     break;
2110                 case "quoted_tweet":
2111                     if (evt.IsMe) return;
2112
2113                     tweetEvent = TwitterStreamEvent<TwitterStatusCompat>.ParseJson(content);
2114                     tweet = tweetEvent.TargetObject.Normalize();
2115                     evt.Target = "@" + tweet.User.ScreenName + ":" + WebUtility.HtmlDecode(tweet.FullText);
2116                     evt.Id = tweet.Id;
2117
2118                     if (SettingManager.Common.IsRemoveSameEvent)
2119                     {
2120                         if (this.StoredEvent.Any(ev => ev.Username == evt.Username && ev.Eventtype == evt.Eventtype && ev.Target == evt.Target))
2121                             return;
2122                     }
2123                     break;
2124                 case "list_member_added":
2125                 case "list_member_removed":
2126                 case "list_created":
2127                 case "list_destroyed":
2128                 case "list_updated":
2129                 case "list_user_subscribed":
2130                 case "list_user_unsubscribed":
2131                     var listEvent = TwitterStreamEvent<TwitterList>.ParseJson(content);
2132                     evt.Target = listEvent.TargetObject.FullName;
2133                     break;
2134                 case "block":
2135                     if (!TabInformations.GetInstance().BlockIds.Contains(eventData.Target.Id)) TabInformations.GetInstance().BlockIds.Add(eventData.Target.Id);
2136                     evt.Target = "";
2137                     break;
2138                 case "unblock":
2139                     if (TabInformations.GetInstance().BlockIds.Contains(eventData.Target.Id)) TabInformations.GetInstance().BlockIds.Remove(eventData.Target.Id);
2140                     evt.Target = "";
2141                     break;
2142                 case "user_update":
2143                     evt.Target = "";
2144                     break;
2145
2146                 // Mute / Unmute
2147                 case "mute":
2148                     evt.Target = "@" + eventData.Target.ScreenName;
2149                     if (!TabInformations.GetInstance().MuteUserIds.Contains(eventData.Target.Id))
2150                     {
2151                         TabInformations.GetInstance().MuteUserIds.Add(eventData.Target.Id);
2152                     }
2153                     break;
2154                 case "unmute":
2155                     evt.Target = "@" + eventData.Target.ScreenName;
2156                     if (TabInformations.GetInstance().MuteUserIds.Contains(eventData.Target.Id))
2157                     {
2158                         TabInformations.GetInstance().MuteUserIds.Remove(eventData.Target.Id);
2159                     }
2160                     break;
2161
2162                 default:
2163                     MyCommon.TraceOut("Unknown Event:" + evt.Event + Environment.NewLine + content);
2164                     break;
2165             }
2166             this.StoredEvent.Insert(0, evt);
2167
2168             this.UserStreamEventReceived?.Invoke(this, new UserStreamEventReceivedEventArgs(evt));
2169         }
2170
2171         private void userStream_Started()
2172         {
2173             this.UserStreamStarted?.Invoke(this, EventArgs.Empty);
2174         }
2175
2176         private void userStream_Stopped()
2177         {
2178             this.UserStreamStopped?.Invoke(this, EventArgs.Empty);
2179         }
2180
2181         public bool UserStreamActive
2182             => this.userStream != null && this.userStream.IsStreamActive;
2183
2184         public void StartUserStream()
2185         {
2186             var newStream = new TwitterUserstream(this.Api);
2187
2188             newStream.StatusArrived += userStream_StatusArrived;
2189             newStream.Started += userStream_Started;
2190             newStream.Stopped += userStream_Stopped;
2191
2192             newStream.Start(this.AllAtReply, this.TrackWord);
2193
2194             var oldStream = Interlocked.Exchange(ref this.userStream, newStream);
2195             oldStream?.Dispose();
2196         }
2197
2198         public void StopUserStream()
2199         {
2200             var oldStream = Interlocked.Exchange(ref this.userStream, null);
2201             oldStream?.Dispose();
2202         }
2203
2204         public void ReconnectUserStream()
2205         {
2206             if (this.userStream != null)
2207             {
2208                 this.StartUserStream();
2209             }
2210         }
2211
2212         private class TwitterUserstream : IDisposable
2213         {
2214             public bool AllAtReplies { get; private set; }
2215             public string TrackWords { get; private set; }
2216
2217             public bool IsStreamActive { get; private set; }
2218
2219             public event Action<string> StatusArrived;
2220             public event Action Stopped;
2221             public event Action Started;
2222
2223             private TwitterApi twitterApi;
2224
2225             private Task streamTask;
2226             private CancellationTokenSource streamCts;
2227
2228             public TwitterUserstream(TwitterApi twitterApi)
2229             {
2230                 this.twitterApi = twitterApi;
2231             }
2232
2233             public void Start(bool allAtReplies, string trackwords)
2234             {
2235                 this.AllAtReplies = allAtReplies;
2236                 this.TrackWords = trackwords;
2237
2238                 var cts = new CancellationTokenSource();
2239
2240                 this.streamCts = cts;
2241                 this.streamTask = Task.Run(async () =>
2242                 {
2243                     try
2244                     {
2245                         await this.UserStreamLoop(cts.Token)
2246                             .ConfigureAwait(false);
2247                     }
2248                     catch (OperationCanceledException) { }
2249                 });
2250             }
2251
2252             public void Stop()
2253             {
2254                 this.streamCts?.Cancel();
2255
2256                 // streamTask の完了を待たずに IsStreamActive を false にセットする
2257                 this.IsStreamActive = false;
2258                 this.Stopped?.Invoke();
2259             }
2260
2261             private async Task UserStreamLoop(CancellationToken cancellationToken)
2262             {
2263                 TimeSpan sleep = TimeSpan.Zero;
2264                 for (;;)
2265                 {
2266                     if (sleep != TimeSpan.Zero)
2267                     {
2268                         await Task.Delay(sleep, cancellationToken)
2269                             .ConfigureAwait(false);
2270                         sleep = TimeSpan.Zero;
2271                     }
2272
2273                     if (!MyCommon.IsNetworkAvailable())
2274                     {
2275                         sleep = TimeSpan.FromSeconds(30);
2276                         continue;
2277                     }
2278
2279                     this.IsStreamActive = true;
2280                     this.Started?.Invoke();
2281
2282                     try
2283                     {
2284                         var replies = this.AllAtReplies ? "all" : null;
2285
2286                         using (var stream = await this.twitterApi.UserStreams(replies, this.TrackWords)
2287                             .ConfigureAwait(false))
2288                         using (var reader = new StreamReader(stream))
2289                         {
2290                             while (!reader.EndOfStream)
2291                             {
2292                                 var line = await reader.ReadLineAsync()
2293                                     .ConfigureAwait(false);
2294
2295                                 cancellationToken.ThrowIfCancellationRequested();
2296
2297                                 this.StatusArrived?.Invoke(line);
2298                             }
2299                         }
2300
2301                         // キャンセルされていないのにストリームが終了した場合
2302                         sleep = TimeSpan.FromSeconds(30);
2303                     }
2304                     catch (TwitterApiException) { sleep = TimeSpan.FromSeconds(30); }
2305                     catch (IOException) { sleep = TimeSpan.FromSeconds(30); }
2306                     catch (OperationCanceledException)
2307                     {
2308                         if (cancellationToken.IsCancellationRequested)
2309                             throw;
2310
2311                         // cancellationToken によるキャンセルではない（＝タイムアウトエラー）
2312                         sleep = TimeSpan.FromSeconds(30);
2313                     }
2314                     catch (Exception ex)
2315                     {
2316                         MyCommon.ExceptionOut(ex);
2317                         sleep = TimeSpan.FromSeconds(30);
2318                     }
2319                     finally
2320                     {
2321                         this.IsStreamActive = false;
2322                         this.Stopped?.Invoke();
2323                     }
2324                 }
2325             }
2326
2327             private bool disposed = false;
2328
2329             public void Dispose()
2330             {
2331                 if (this.disposed)
2332                     return;
2333
2334                 this.disposed = true;
2335
2336                 this.Stop();
2337
2338                 this.Started = null;
2339                 this.Stopped = null;
2340                 this.StatusArrived = null;
2341             }
2342         }
2343 #endregion
2344
2345 #region "IDisposable Support"
2346         private bool disposedValue; // 重複する呼び出しを検出するには
2347
2348         // IDisposable
2349         protected virtual void Dispose(bool disposing)
2350         {
2351             if (!this.disposedValue)
2352             {
2353                 if (disposing)
2354                 {
2355                     this.StopUserStream();
2356                 }
2357             }
2358             this.disposedValue = true;
2359         }
2360
2361         //protected Overrides void Finalize()
2362         //{
2363         //    // このコードを変更しないでください。クリーンアップ コードを上の Dispose(bool disposing) に記述します。
2364         //    Dispose(false)
2365         //    MyBase.Finalize()
2366         //}
2367
2368         // このコードは、破棄可能なパターンを正しく実装できるように Visual Basic によって追加されました。
2369         public void Dispose()
2370         {
2371             // このコードを変更しないでください。クリーンアップ コードを上の Dispose(bool disposing) に記述します。
2372             Dispose(true);
2373             GC.SuppressFinalize(this);
2374         }
2375 #endregion
2376     }
2377
2378     public class PostDeletedEventArgs : EventArgs
2379     {
2380         public long StatusId { get; }
2381
2382         public PostDeletedEventArgs(long statusId)
2383         {
2384             this.StatusId = statusId;
2385         }
2386     }
2387
2388     public class UserStreamEventReceivedEventArgs : EventArgs
2389     {
2390         public Twitter.FormattedEvent EventData { get; }
2391
2392         public UserStreamEventReceivedEventArgs(Twitter.FormattedEvent eventData)
2393         {
2394             this.EventData = eventData;
2395         }
2396     }
2397 }