OpenTween/Models/PostClass.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2007-2011 kiri_feather (@kiri_feather) <kiri.feather@gmail.com>
   3 //           (c) 2008-2011 Moz (@syo68k)
   4 //           (c) 2008-2011 takeshik (@takeshik) <http://www.takeshik.org/>
   5 //           (c) 2010-2011 anis774 (@anis774) <http://d.hatena.ne.jp/anis774/>
   6 //           (c) 2010-2011 fantasticswallow (@f_swallow) <http://twitter.com/f_swallow>
   7 //           (c) 2011      Egtra (@egtra) <http://dev.activebasic.com/egtra/>
   8 //           (c) 2012      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   9 // All rights reserved.
  10 //
  11 // This file is part of OpenTween.
  12 //
  13 // This program is free software; you can redistribute it and/or modify it
  14 // under the terms of the GNU General Public License as published by the Free
  15 // Software Foundation; either version 3 of the License, or (at your option)
  16 // any later version.
  17 //
  18 // This program is distributed in the hope that it will be useful, but
  19 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  21 // for more details.
  22 //
  23 // You should have received a copy of the GNU General Public License along
  24 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  25 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  26 // Boston, MA 02110-1301, USA.
  27
  28 using System;
  29 using System.Collections.Generic;
  30 using System.Linq;
  31 using System.Net;
  32 using System.Text;
  33 using System.Threading;
  34 using System.Threading.Tasks;
  35
  36 namespace OpenTween.Models
  37 {
  38     public class PostClass : ICloneable
  39     {
  40         public struct StatusGeo : IEquatable<StatusGeo>
  41         {
  42             public double Longitude { get; }
  43             public double Latitude { get; }
  44
  45             public StatusGeo(double longitude, double latitude)
  46             {
  47                 this.Longitude = longitude;
  48                 this.Latitude = latitude;
  49             }
  50
  51             public override int GetHashCode()
  52                 => this.Longitude.GetHashCode() ^ this.Latitude.GetHashCode();
  53
  54             public override bool Equals(object obj)
  55                 => obj is StatusGeo && this.Equals((StatusGeo)obj);
  56
  57             public bool Equals(StatusGeo other)
  58                 => this.Longitude == other.Longitude && this.Latitude == other.Longitude;
  59
  60             public static bool operator ==(StatusGeo left, StatusGeo right)
  61                 => left.Equals(right);
  62
  63             public static bool operator !=(StatusGeo left, StatusGeo right)
  64                 => !left.Equals(right);
  65         }
  66         public string Nickname { get; set; }
  67         public string TextFromApi { get; set; }
  68
  69         /// <summary>スクリーンリーダーでの読み上げを考慮したテキスト</summary>
  70         public string AccessibleText { get; set; }
  71
  72         public string ImageUrl { get; set; }
  73         public string ScreenName { get; set; }
  74         public DateTimeUtc CreatedAt { get; set; }
  75         public long StatusId { get; set; }
  76         private bool _IsFav;
  77
  78         public string Text
  79         {
  80             get
  81             {
  82                 if (this.expandComplatedAll)
  83                     return this._text;
  84
  85                 var expandedHtml = this.ReplaceToExpandedUrl(this._text, out this.expandComplatedAll);
  86                 if (this.expandComplatedAll)
  87                     this._text = expandedHtml;
  88
  89                 return expandedHtml;
  90             }
  91             set => this._text = value;
  92         }
  93         private string _text;
  94
  95         public bool IsRead { get; set; }
  96         public bool IsReply { get; set; }
  97         public bool IsExcludeReply { get; set; }
  98         private bool _IsProtect;
  99         public bool IsOwl { get; set; }
 100         private bool _IsMark;
 101         public string InReplyToUser { get; set; }
 102         private long? _InReplyToStatusId;
 103         public string Source { get; set; }
 104         public Uri SourceUri { get; set; }
 105         public List<Tuple<long, string>> ReplyToList { get; set; }
 106         public bool IsMe { get; set; }
 107         public bool IsDm { get; set; }
 108         public long UserId { get; set; }
 109         public bool FilterHit { get; set; }
 110         public string RetweetedBy { get; set; }
 111         public long? RetweetedId { get; set; }
 112         private bool _IsDeleted = false;
 113         private StatusGeo? _postGeo = null;
 114         public int RetweetedCount { get; set; }
 115         public long? RetweetedByUserId { get; set; }
 116         public long? InReplyToUserId { get; set; }
 117         public List<MediaInfo> Media { get; set; }
 118         public long[] QuoteStatusIds { get; set; }
 119         public ExpandedUrlInfo[] ExpandedUrls { get; set; }
 120
 121         /// <summary>
 122         /// <see cref="PostClass"/> に含まれる t.co の展開後の URL を保持するクラス
 123         /// </summary>
 124         public class ExpandedUrlInfo : ICloneable
 125         {
 126             /// <summary>展開前の t.co ドメインの URL</summary>
 127             public string Url { get; }
 128
 129             /// <summary>展開後の URL</summary>
 130             /// <remarks>
 131             /// <see cref="ShortUrl"/> による展開が完了するまでは Entity に含まれる expanded_url の値を返します
 132             /// </remarks>
 133             public string ExpandedUrl => this._expandedUrl;
 134
 135             /// <summary><see cref="ShortUrl"/> による展開を行うタスク</summary>
 136             public Task ExpandTask { get; private set; }
 137
 138             /// <summary><see cref="DeepExpandAsync"/> による展開が完了したか否か</summary>
 139             public bool ExpandedCompleted => this.ExpandTask.IsCompleted;
 140
 141             protected string _expandedUrl;
 142
 143             public ExpandedUrlInfo(string url, string expandedUrl)
 144                 : this(url, expandedUrl, deepExpand: true)
 145             {
 146             }
 147
 148             public ExpandedUrlInfo(string url, string expandedUrl, bool deepExpand)
 149             {
 150                 this.Url = url;
 151                 this._expandedUrl = expandedUrl;
 152
 153                 if (deepExpand)
 154                     this.ExpandTask = this.DeepExpandAsync();
 155                 else
 156                     this.ExpandTask = Task.FromResult(0);
 157             }
 158
 159             protected virtual async Task DeepExpandAsync()
 160             {
 161                 var origUrl = this._expandedUrl;
 162                 var newUrl = await ShortUrl.Instance.ExpandUrlAsync(origUrl)
 163                     .ConfigureAwait(false);
 164
 165                 Interlocked.CompareExchange(ref this._expandedUrl, newUrl, origUrl);
 166             }
 167
 168             public ExpandedUrlInfo Clone()
 169                 => new ExpandedUrlInfo(this.Url, this.ExpandedUrl, deepExpand: false);
 170
 171             object ICloneable.Clone()
 172                 => this.Clone();
 173         }
 174
 175         public int FavoritedCount { get; set; }
 176
 177         private States _states = States.None;
 178         private bool expandComplatedAll = false;
 179
 180         [Flags]
 181         private enum States
 182         {
 183             None = 0,
 184             Protect = 1,
 185             Mark = 2,
 186             Reply = 4,
 187             Geo = 8,
 188         }
 189
 190         public PostClass()
 191         {
 192             RetweetedBy = "";
 193             Media = new List<MediaInfo>();
 194             ReplyToList = new List<Tuple<long, string>>();
 195             QuoteStatusIds = new long[0];
 196             ExpandedUrls = new ExpandedUrlInfo[0];
 197         }
 198
 199         public string TextSingleLine
 200             => this.TextFromApi?.Replace("\n", " ");
 201
 202         public bool IsFav
 203         {
 204             get
 205             {
 206                 if (this.RetweetedId != null)
 207                 {
 208                     var post = this.RetweetSource;
 209                     if (post != null)
 210                     {
 211                         return post.IsFav;
 212                     }
 213                 }
 214
 215                 return _IsFav;
 216             }
 217             set
 218             {
 219                 _IsFav = value;
 220                 if (this.RetweetedId != null)
 221                 {
 222                     var post = this.RetweetSource;
 223                     if (post != null)
 224                     {
 225                         post.IsFav = value;
 226                     }
 227                 }
 228             }
 229         }
 230
 231         public bool IsProtect
 232         {
 233             get
 234             {
 235                 return _IsProtect;
 236             }
 237             set
 238             {
 239                 if (value)
 240                 {
 241                     _states = _states | States.Protect;
 242                 }
 243                 else
 244                 {
 245                     _states = _states & ~States.Protect;
 246                 }
 247                 _IsProtect = value;
 248             }
 249         }
 250         public bool IsMark
 251         {
 252             get
 253             {
 254                 return _IsMark;
 255             }
 256             set
 257             {
 258                 if (value)
 259                 {
 260                     _states = _states | States.Mark;
 261                 }
 262                 else
 263                 {
 264                     _states = _states & ~States.Mark;
 265                 }
 266                 _IsMark = value;
 267             }
 268         }
 269         public long? InReplyToStatusId
 270         {
 271             get
 272             {
 273                 return _InReplyToStatusId;
 274             }
 275             set
 276             {
 277                 if (value != null)
 278                 {
 279                     _states = _states | States.Reply;
 280                 }
 281                 else
 282                 {
 283                     _states = _states & ~States.Reply;
 284                 }
 285                 _InReplyToStatusId = value;
 286             }
 287         }
 288
 289         public bool IsDeleted
 290         {
 291             get
 292             {
 293                 return _IsDeleted;
 294             }
 295             set
 296             {
 297                 if (value)
 298                 {
 299                     this.InReplyToStatusId = null;
 300                     this.InReplyToUser = "";
 301                     this.InReplyToUserId = null;
 302                     this.IsReply = false;
 303                     this.ReplyToList = new List<Tuple<long, string>>();
 304                     this._states = States.None;
 305                 }
 306                 _IsDeleted = value;
 307             }
 308         }
 309
 310         protected virtual PostClass RetweetSource
 311         {
 312             get
 313             {
 314                 return TabInformations.GetInstance().RetweetSource(this.RetweetedId.Value);
 315             }
 316         }
 317
 318         public StatusGeo? PostGeo
 319         {
 320             get
 321             {
 322                 return _postGeo;
 323             }
 324             set
 325             {
 326                 if (value != null)
 327                 {
 328                     _states |= States.Geo;
 329                 }
 330                 else
 331                 {
 332                     _states &= ~States.Geo;
 333                 }
 334                 _postGeo = value;
 335             }
 336         }
 337
 338         public int StateIndex
 339         {
 340             get
 341             {
 342                 return (int)_states - 1;
 343             }
 344         }
 345
 346         // 互換性のために用意
 347         public string SourceHtml
 348         {
 349             get
 350             {
 351                 if (this.SourceUri == null)
 352                     return WebUtility.HtmlEncode(this.Source);
 353
 354                 return string.Format("<a href=\"{0}\" rel=\"nofollow\">{1}</a>",
 355                     WebUtility.HtmlEncode(this.SourceUri.AbsoluteUri), WebUtility.HtmlEncode(this.Source));
 356             }
 357         }
 358
 359         /// <summary>
 360         /// このツイートが指定したユーザーによって削除可能であるかを判定します
 361         /// </summary>
 362         /// <param name="selfUserId">ツイートを削除しようとするユーザーのID</param>
 363         /// <returns>削除可能であれば true、そうでなければ false</returns>
 364         public bool CanDeleteBy(long selfUserId)
 365         {
 366             // 自分が送った DM と自分に届いた DM のどちらも削除可能
 367             if (this.IsDm)
 368                 return true;
 369
 370             // 自分のツイート or 他人に RT された自分のツイート
 371             if (this.UserId == selfUserId)
 372                 return true;
 373
 374             // 自分が RT したツイート
 375             if (this.RetweetedByUserId == selfUserId)
 376                 return true;
 377
 378             return false;
 379         }
 380
 381         /// <summary>
 382         /// このツイートが指定したユーザーによってリツイート可能であるかを判定します
 383         /// </summary>
 384         /// <param name="selfUserId">リツイートしようとするユーザーのID</param>
 385         /// <returns>リツイート可能であれば true、そうでなければ false</returns>
 386         public bool CanRetweetBy(long selfUserId)
 387         {
 388             // DM は常にリツイート不可
 389             if (this.IsDm)
 390                 return false;
 391
 392             // 自分のツイートであれば鍵垢であるかに関わらずリツイート可
 393             if (this.UserId == selfUserId)
 394                 return true;
 395
 396             return !this.IsProtect;
 397         }
 398
 399         public PostClass ConvertToOriginalPost()
 400         {
 401             if (this.RetweetedId == null)
 402                 throw new InvalidOperationException();
 403
 404             var originalPost = this.Clone();
 405
 406             originalPost.StatusId = this.RetweetedId.Value;
 407             originalPost.RetweetedId = null;
 408             originalPost.RetweetedBy = "";
 409             originalPost.RetweetedByUserId = null;
 410             originalPost.RetweetedCount = 1;
 411
 412             return originalPost;
 413         }
 414
 415         public string GetExpandedUrl(string urlStr)
 416         {
 417             var urlInfo = this.ExpandedUrls.FirstOrDefault(x => x.Url == urlStr);
 418             if (urlInfo == null)
 419                 return urlStr;
 420
 421             return urlInfo.ExpandedUrl;
 422         }
 423
 424         public string[] GetExpandedUrls()
 425             => this.ExpandedUrls.Select(x => x.ExpandedUrl).ToArray();
 426
 427         /// <summary>
 428         /// <paramref name="html"/> に含まれる短縮 URL を展開済みの URL に置換します
 429         /// </summary>
 430         /// <param name="html">置換する対象の HTML 文字列</param>
 431         /// <param name="completedAll">全ての URL の展開が完了していれば true、未完了の URL があれば false</param>
 432         private string ReplaceToExpandedUrl(string html, out bool completedAll)
 433         {
 434             if (this.ExpandedUrls.Length == 0)
 435             {
 436                 completedAll = true;
 437                 return html;
 438             }
 439
 440             completedAll = true;
 441
 442             foreach (var urlInfo in this.ExpandedUrls)
 443             {
 444                 if (!urlInfo.ExpandedCompleted)
 445                     completedAll = false;
 446
 447                 var tcoUrl = urlInfo.Url;
 448                 var expandedUrl = MyCommon.ConvertToReadableUrl(urlInfo.ExpandedUrl);
 449                 html = html.Replace($"title=\"{WebUtility.HtmlEncode(tcoUrl)}\"",
 450                     $"title=\"{WebUtility.HtmlEncode(expandedUrl)}\"");
 451             }
 452
 453             return html;
 454         }
 455
 456         public PostClass Clone()
 457         {
 458             var clone = (PostClass)this.MemberwiseClone();
 459             clone.ReplyToList = new List<Tuple<long, string>>(this.ReplyToList);
 460             clone.Media = new List<MediaInfo>(this.Media);
 461             clone.QuoteStatusIds = this.QuoteStatusIds.ToArray();
 462             clone.ExpandedUrls = this.ExpandedUrls.Select(x => x.Clone()).ToArray();
 463
 464             return clone;
 465         }
 466
 467         object ICloneable.Clone()
 468             => this.Clone();
 469
 470         public override bool Equals(object obj)
 471         {
 472             if (obj == null || this.GetType() != obj.GetType()) return false;
 473             return this.Equals((PostClass)obj);
 474         }
 475
 476         public bool Equals(PostClass other)
 477         {
 478             if (other == null) return false;
 479             return (this.Nickname == other.Nickname) &&
 480                     (this.TextFromApi == other.TextFromApi) &&
 481                     (this.ImageUrl == other.ImageUrl) &&
 482                     (this.ScreenName == other.ScreenName) &&
 483                     (this.CreatedAt == other.CreatedAt) &&
 484                     (this.StatusId == other.StatusId) &&
 485                     (this.IsFav == other.IsFav) &&
 486                     (this.Text == other.Text) &&
 487                     (this.IsRead == other.IsRead) &&
 488                     (this.IsReply == other.IsReply) &&
 489                     (this.IsExcludeReply == other.IsExcludeReply) &&
 490                     (this.IsProtect == other.IsProtect) &&
 491                     (this.IsOwl == other.IsOwl) &&
 492                     (this.IsMark == other.IsMark) &&
 493                     (this.InReplyToUser == other.InReplyToUser) &&
 494                     (this.InReplyToStatusId == other.InReplyToStatusId) &&
 495                     (this.Source == other.Source) &&
 496                     (this.SourceUri == other.SourceUri) &&
 497                     (this.ReplyToList.SequenceEqual(other.ReplyToList)) &&
 498                     (this.IsMe == other.IsMe) &&
 499                     (this.IsDm == other.IsDm) &&
 500                     (this.UserId == other.UserId) &&
 501                     (this.FilterHit == other.FilterHit) &&
 502                     (this.RetweetedBy == other.RetweetedBy) &&
 503                     (this.RetweetedId == other.RetweetedId) &&
 504                     (this.IsDeleted == other.IsDeleted) &&
 505                     (this.InReplyToUserId == other.InReplyToUserId);
 506
 507         }
 508
 509         public override int GetHashCode()
 510         {
 511             return this.StatusId.GetHashCode();
 512         }
 513     }
 514 }