// OpenTween - Client of Twitter
// Copyright (c) 2007-2011 kiri_feather (@kiri_feather) <kiri.feather@gmail.com>
//           (c) 2008-2011 Moz (@syo68k)
//           (c) 2008-2011 takeshik (@takeshik) <http://www.takeshik.org/>
//           (c) 2010-2011 anis774 (@anis774) <http://d.hatena.ne.jp/anis774/>
//           (c) 2010-2011 fantasticswallow (@f_swallow) <http://twitter.com/f_swallow>
//           (c) 2011      Egtra (@egtra) <http://dev.activebasic.com/egtra/>
//           (c) 2013      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
// All rights reserved.
//
// This file is part of OpenTween.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>, or write to
// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
// Boston, MA 02110-1301, USA.

using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Xml;
using System.Xml.Linq;
using System.Xml.XPath;
using System;
using System.Reflection;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using OpenTween.Api;
using OpenTween.Connection;

namespace OpenTween
{
    public class Twitter : IDisposable
    {
        #region Regexp from twitter-text-js

        // The code in this region code block incorporates works covered by
        // the following copyright and permission notices:
        //
        //   Copyright 2011 Twitter, Inc.
        //
        //   Licensed under the Apache License, Version 2.0 (the "License"); you
        //   may not use this work except in compliance with the License. You
        //   may obtain a copy of the License in the LICENSE file, or at:
        //
        //   http://www.apache.org/licenses/LICENSE-2.0
        //
        //   Unless required by applicable law or agreed to in writing, software
        //   distributed under the License is distributed on an "AS IS" BASIS,
        //   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
        //   implied. See the License for the specific language governing
        //   permissions and limitations under the License.

        //Hashtag用正規表現
        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";
        private const string NON_LATIN_HASHTAG_CHARS = @"\u0400-\u04ff\u0500-\u0527\u1100-\u11ff\u3130-\u3185\uA960-\uA97F\uAC00-\uD7AF\uD7B0-\uD7FF";
        //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";
        private const string CJ_HASHTAG_CHARACTERS = @"\u30A1-\u30FA\u30FC\u3005\uFF66-\uFF9F\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\u3041-\u309A\u3400-\u4DBF\p{IsCJKUnifiedIdeographs}";
        private const string HASHTAG_BOUNDARY = @"^|$|\s|「|」|。|\.|!";
        private const string HASHTAG_ALPHA = "[a-z_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
        private const string HASHTAG_ALPHANUMERIC = "[a-z0-9_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
        private const string HASHTAG_TERMINATOR = "[^a-z0-9_" + LATIN_ACCENTS + NON_LATIN_HASHTAG_CHARS + CJ_HASHTAG_CHARACTERS + "]";
        public const string HASHTAG = "(" + HASHTAG_BOUNDARY + ")(#|＃)(" + HASHTAG_ALPHANUMERIC + "*" + HASHTAG_ALPHA + HASHTAG_ALPHANUMERIC + "*)(?=" + HASHTAG_TERMINATOR + "|" + HASHTAG_BOUNDARY + ")";
        //URL正規表現
        private const string url_valid_preceding_chars = @"(?:[^A-Za-z0-9@＠$#＃\ufffe\ufeff\uffff\u202a-\u202e]|^)";
        public const string url_invalid_without_protocol_preceding_chars = @"[-_./]$";
        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";
        private const string url_valid_domain_chars = @"[^" + url_invalid_domain_chars + "]";
        private const string url_valid_subdomain = @"(?:(?:" + url_valid_domain_chars + @"(?:[_-]|" + url_valid_domain_chars + @")*)?" + url_valid_domain_chars + @"\.)";
        private const string url_valid_domain_name = @"(?:(?:" + url_valid_domain_chars + @"(?:-|" + url_valid_domain_chars + @")*)?" + url_valid_domain_chars + @"\.)";
        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]|$))";
        private const string url_valid_CCTLD = @"(?:(?:ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|ss|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|za|zm|zw)(?=[^0-9a-zA-Z]|$))";
        private const string url_valid_punycode = @"(?:xn--[0-9a-z]+)";
        private const string url_valid_domain = @"(?<domain>" + url_valid_subdomain + "*" + url_valid_domain_name + "(?:" + url_valid_GTLD + "|" + url_valid_CCTLD + ")|" + url_valid_punycode + ")";
        public const string url_valid_ascii_domain = @"(?:(?:[a-z0-9" + LATIN_ACCENTS + @"]+)\.)+(?:" + url_valid_GTLD + "|" + url_valid_CCTLD + "|" + url_valid_punycode + ")";
        public const string url_invalid_short_domain = "^" + url_valid_domain_name + url_valid_CCTLD + "$";
        private const string url_valid_port_number = @"[0-9]+";

        private const string url_valid_general_path_chars = @"[a-z0-9!*';:=+,.$/%#\[\]\-_~|&" + LATIN_ACCENTS + "]";
        private const string url_balance_parens = @"(?:\(" + url_valid_general_path_chars + @"+\))";
        private const string url_valid_path_ending_chars = @"(?:[+\-a-z0-9=_#/" + LATIN_ACCENTS + "]|" + url_balance_parens + ")";
        private const string pth = "(?:" +
            "(?:" +
                url_valid_general_path_chars + "*" +
                "(?:" + url_balance_parens + url_valid_general_path_chars + "*)*" +
                url_valid_path_ending_chars +
                ")|(?:@" + url_valid_general_path_chars + "+/)" +
            ")";
        private const string qry = @"(?<query>\?[a-z0-9!?*'();:&=+$/%#\[\]\-_.,~|]*[a-z0-9_&=#/])?";
        public const string rgUrl = @"(?<before>" + url_valid_preceding_chars + ")" +
                                    "(?<url>(?<protocol>https?://)?" +
                                    "(?<domain>" + url_valid_domain + ")" +
                                    "(?::" + url_valid_port_number + ")?" +
                                    "(?<path>/" + pth + "*)?" +
                                    qry +
                                    ")";

        #endregion

        /// <summary>
        /// Twitter API のステータスページのURL
        /// </summary>
        public const string ServiceAvailabilityStatusUrl = "https://status.io.watchmouse.com/7617";

        /// <summary>
        /// ツイートへのパーマリンクURLを判定する正規表現
        /// </summary>
        public static readonly Regex StatusUrlRegex = new Regex(@"https?://([^.]+\.)?twitter\.com/(#!/)?(?<ScreenName>[a-zA-Z0-9_]+)/status(es)?/(?<StatusId>[0-9]+)(/photo)?", RegexOptions.IgnoreCase);

        /// <summary>
        /// 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
        /// </summary>
        public static readonly Regex ThirdPartyStatusUrlRegex = new Regex(@"https?://(?:[^.]+\.)?(?:
  favstar\.fm/users/[a-zA-Z0-9_]+/status/       # Favstar
| favstar\.fm/t/                                # Favstar (short)
| aclog\.koba789\.com/i/                        # aclog
| frtrt\.net/solo_status\.php\?status=          # RtRT
)(?<StatusId>[0-9]+)", RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);

        /// <summary>
        /// DM送信かどうかを判定する正規表現
        /// </summary>
        public static readonly Regex DMSendTextRegex = new Regex(@"^DM? +(?<id>[a-zA-Z0-9_]+) +(?<body>.*)", RegexOptions.IgnoreCase | RegexOptions.Singleline);

        public TwitterConfiguration Configuration { get; private set; }

        delegate void GetIconImageDelegate(PostClass post);
        private readonly object LockObj = new object();
        private ISet<long> followerId = new HashSet<long>();
        private bool _GetFollowerResult = false;
        private long[] noRTId = new long[0];
        private bool _GetNoRetweetResult = false;

        //プロパティからアクセスされる共通情報
        private string _uname;

        private bool _readOwnPost;
        private List<string> _hashList = new List<string>();

        //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）
        private long minHomeTimeline = long.MaxValue;
        private long minMentions = long.MaxValue;
        private long minDirectmessage = long.MaxValue;
        private long minDirectmessageSent = long.MaxValue;

        //private FavoriteQueue favQueue;

        private HttpTwitter twCon = new HttpTwitter();

        //private List<PostClass> _deletemessages = new List<PostClass>();

        public Twitter()
        {
            this.Configuration = TwitterConfiguration.DefaultConfiguration();
        }

        public TwitterApiAccessLevel AccessLevel
        {
            get
            {
                return MyCommon.TwitterApiInfo.AccessLevel;
            }
        }

        protected void ResetApiStatus()
        {
            MyCommon.TwitterApiInfo.Reset();
        }

        public void Authenticate(string username, string password)
        {
            this.ResetApiStatus();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.AuthUserAndPass(username, password, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            _uname = username.ToLowerInvariant();
            if (SettingCommon.Instance.UserstreamStartup) this.ReconnectUserStream();
        }

        public string StartAuthentication()
        {
            //OAuth PIN Flow
            this.ResetApiStatus();
            try
            {
                string pinPageUrl = null;
                var res = twCon.AuthGetRequestToken(ref pinPageUrl);
                if (!res)
                    throw new WebApiException("Err:Failed to access auth server.");

                return pinPageUrl;
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:Failed to access auth server.", ex);
            }
        }

        public void Authenticate(string pinCode)
        {
            this.ResetApiStatus();

            HttpStatusCode res;
            try
            {
                res = twCon.AuthGetAccessToken(pinCode);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:Failed to access auth acc server.", ex);
            }

            this.CheckStatusCode(res, null);

            _uname = Username.ToLowerInvariant();
            if (SettingCommon.Instance.UserstreamStartup) this.ReconnectUserStream();
        }

        public void ClearAuthInfo()
        {
            Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
            this.ResetApiStatus();
            twCon.ClearAuthInfo();
        }

        public void VerifyCredentials()
        {
            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.VerifyCredentials(ref content);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var user = TwitterUser.ParseJson(content);

                this.twCon.AuthenticatedUserId = user.Id;
                this.UpdateUserStats(user);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
        }

        public void Initialize(string token, string tokenSecret, string username, long userId)
        {
            //OAuth認証
            if (string.IsNullOrEmpty(token) || string.IsNullOrEmpty(tokenSecret) || string.IsNullOrEmpty(username))
            {
                Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
            }
            this.ResetApiStatus();
            twCon.Initialize(token, tokenSecret, username, userId);
            _uname = username.ToLowerInvariant();
            if (SettingCommon.Instance.UserstreamStartup) this.ReconnectUserStream();
        }

        public string PreProcessUrl(string orgData)
        {
            int posl1;
            var posl2 = 0;
            //var IDNConveter = new IdnMapping();
            var href = "<a href=\"";

            while (true)
            {
                if (orgData.IndexOf(href, posl2, StringComparison.Ordinal) > -1)
                {
                    var urlStr = "";
                    // IDN展開
                    posl1 = orgData.IndexOf(href, posl2, StringComparison.Ordinal);
                    posl1 += href.Length;
                    posl2 = orgData.IndexOf("\"", posl1, StringComparison.Ordinal);
                    urlStr = orgData.Substring(posl1, posl2 - posl1);

                    if (!urlStr.StartsWith("http://", StringComparison.Ordinal)
                        && !urlStr.StartsWith("https://", StringComparison.Ordinal)
                        && !urlStr.StartsWith("ftp://", StringComparison.Ordinal))
                    {
                        continue;
                    }

                    var replacedUrl = MyCommon.IDNEncode(urlStr);
                    if (replacedUrl == null) continue;
                    if (replacedUrl == urlStr) continue;

                    orgData = orgData.Replace("<a href=\"" + urlStr, "<a href=\"" + replacedUrl);
                    posl2 = 0;
                }
                else
                {
                    break;
                }
            }
            return orgData;
        }

        private string GetPlainText(string orgData)
        {
            return WebUtility.HtmlDecode(Regex.Replace(orgData, "(?<tagStart><a [^>]+>)(?<text>[^<]+)(?<tagEnd></a>)", "${text}"));
        }

        // htmlの簡易サニタイズ(詳細表示に不要なタグの除去)

        private string SanitizeHtml(string orgdata)
        {
            var retdata = orgdata;

            retdata = Regex.Replace(retdata, "<(script|object|applet|image|frameset|fieldset|legend|style).*" +
                "</(script|object|applet|image|frameset|fieldset|legend|style)>", "", RegexOptions.IgnoreCase);

            retdata = Regex.Replace(retdata, "<(frame|link|iframe|img)>", "", RegexOptions.IgnoreCase);

            return retdata;
        }

        private string AdjustHtml(string orgData)
        {
            var retStr = orgData;
            //var m = Regex.Match(retStr, "<a [^>]+>[#|＃](?<1>[a-zA-Z0-9_]+)</a>");
            //while (m.Success)
            //{
            //    lock (LockObj)
            //    {
            //        _hashList.Add("#" + m.Groups(1).Value);
            //    }
            //    m = m.NextMatch;
            //}
            retStr = Regex.Replace(retStr, "<a [^>]*href=\"/", "<a href=\"https://twitter.com/");
            retStr = retStr.Replace("<a href=", "<a target=\"_self\" href=");
            retStr = Regex.Replace(retStr, @"(\r\n?|\n)", "<br>"); // CRLF, CR, LF は全て <br> に置換する

            //半角スペースを置換(Thanks @anis774)
            var ret = false;
            do
            {
                ret = EscapeSpace(ref retStr);
            } while (!ret);

            return SanitizeHtml(retStr);
        }

        private bool EscapeSpace(ref string html)
        {
            //半角スペースを置換(Thanks @anis774)
            var isTag = false;
            for (int i = 0; i < html.Length; i++)
            {
                if (html[i] == '<')
                {
                    isTag = true;
                }
                if (html[i] == '>')
                {
                    isTag = false;
                }

                if ((!isTag) && (html[i] == ' '))
                {
                    html = html.Remove(i, 1);
                    html = html.Insert(i, "&nbsp;");
                    return false;
                }
            }
            return true;
        }

        private struct PostInfo
        {
            public string CreatedAt;
            public string Id;
            public string Text;
            public string UserId;
            public PostInfo(string Created, string IdStr, string txt, string uid)
            {
                CreatedAt = Created;
                Id = IdStr;
                Text = txt;
                UserId = uid;
            }
            public bool Equals(PostInfo dst)
            {
                if (this.CreatedAt == dst.CreatedAt && this.Id == dst.Id && this.Text == dst.Text && this.UserId == dst.UserId)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }

        static private PostInfo _prev = new PostInfo("", "", "", "");
        private bool IsPostRestricted(TwitterStatus status)
        {
            var _current = new PostInfo("", "", "", "");

            _current.CreatedAt = status.CreatedAt;
            _current.Id = status.IdStr;
            if (status.Text == null)
            {
                _current.Text = "";
            }
            else
            {
                _current.Text = status.Text;
            }
            _current.UserId = status.User.IdStr;

            if (_current.Equals(_prev))
            {
                return true;
            }
            _prev.CreatedAt = _current.CreatedAt;
            _prev.Id = _current.Id;
            _prev.Text = _current.Text;
            _prev.UserId = _current.UserId;

            return false;
        }

        public void PostStatus(string postStr, long? reply_to, List<long> mediaIds = null)
        {
            this.CheckAccountState();

            if (mediaIds == null &&
                Twitter.DMSendTextRegex.IsMatch(postStr))
            {
                SendDirectMessage(postStr);
                return;
            }

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.UpdateStatus(postStr, reply_to, mediaIds, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            // 投稿に成功していても404が返ることがあるらしい: https://dev.twitter.com/discussions/1213
            if (res == HttpStatusCode.NotFound)
                return;

            this.CheckStatusCode(res, content);

            TwitterStatus status;
            try
            {
                status = TwitterStatus.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            this.UpdateUserStats(status.User);

            if (IsPostRestricted(status))
            {
                throw new WebApiException("OK:Delaying?");
            }
        }

        public void PostStatusWithMedia(string postStr, long? reply_to, IMediaItem item)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.UpdateStatusWithMedia(postStr, reply_to, item, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            // 投稿に成功していても404が返ることがあるらしい: https://dev.twitter.com/discussions/1213
            if (res == HttpStatusCode.NotFound)
                return;

            this.CheckStatusCode(res, content);

            TwitterStatus status;
            try
            {
                status = TwitterStatus.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            this.UpdateUserStats(status.User);

            if (IsPostRestricted(status))
            {
                throw new WebApiException("OK:Delaying?");
            }
        }

        public void PostStatusWithMultipleMedia(string postStr, long? reply_to, IMediaItem[] mediaItems)
        {
            this.CheckAccountState();

            if (Twitter.DMSendTextRegex.IsMatch(postStr))
            {
                SendDirectMessage(postStr);
                return;
            }

            var mediaIds = new List<long>();

            foreach (var item in mediaItems)
            {
                var mediaId = UploadMedia(item);
                mediaIds.Add(mediaId);
            }

            if (mediaIds.Count == 0)
                throw new WebApiException("Err:Invalid Files!");

            PostStatus(postStr, reply_to, mediaIds);
        }

        public long UploadMedia(IMediaItem item)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.UploadMedia(item, ref content);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            TwitterUploadMediaResult status;
            try
            {
                status = TwitterUploadMediaResult.ParseJson(content);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            return status.MediaId;
        }

        public void SendDirectMessage(string postStr)
        {
            this.CheckAccountState();
            this.CheckAccessLevel(TwitterApiAccessLevel.ReadWriteAndDirectMessage);

            var mc = Twitter.DMSendTextRegex.Match(postStr);

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.SendDirectMessage(mc.Groups["body"].Value, mc.Groups["id"].Value, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            TwitterDirectMessage status;
            try
            {
                status = TwitterDirectMessage.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            this.UpdateUserStats(status.Sender);
        }

        public void RemoveStatus(long id)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            try
            {
                res = twCon.DestroyStatus(id);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, null);
        }

        public void PostRetweet(long id, bool read)
        {
            this.CheckAccountState();

            //データ部分の生成
            var target = id;
            var post = TabInformations.GetInstance()[id];
            if (post == null)
            {
                throw new WebApiException("Err:Target isn't found.");
            }
            if (TabInformations.GetInstance()[id].RetweetedId != null)
            {
                target = TabInformations.GetInstance()[id].RetweetedId.Value; //再RTの場合は元発言をRT
            }

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.RetweetStatus(target, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            TwitterStatus status;
            try
            {
                status = TwitterStatus.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            //ReTweetしたものをTLに追加
            post = CreatePostsFromStatusData(status);
            if (post == null)
                throw new WebApiException("Invalid Json!", content);

            //二重取得回避
            lock (LockObj)
            {
                if (TabInformations.GetInstance().ContainsKey(post.StatusId))
                    return;
            }
            //Retweet判定
            if (post.RetweetedId == null)
                throw new WebApiException("Invalid Json!", content);
            //ユーザー情報
            post.IsMe = true;

            post.IsRead = read;
            post.IsOwl = false;
            if (_readOwnPost) post.IsRead = true;
            post.IsDm = false;

            TabInformations.GetInstance().AddPost(post);
        }

        public void RemoveDirectMessage(long id, PostClass post)
        {
            this.CheckAccountState();
            this.CheckAccessLevel(TwitterApiAccessLevel.ReadWriteAndDirectMessage);

            //if (post.IsMe)
            //    _deletemessages.Add(post)
            //}

            HttpStatusCode res;
            try
            {
                res = twCon.DestroyDirectMessage(id);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, null);
        }

        public void PostFollowCommand(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.CreateFriendships(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);
        }

        public void PostRemoveCommand(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.DestroyFriendships(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public void PostCreateBlock(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.CreateBlock(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public void PostDestroyBlock(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.DestroyBlock(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public void PostReportSpam(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.ReportSpam(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public TwitterFriendship GetFriendshipInfo(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.ShowFriendships(_uname, screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return TwitterFriendship.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
        }

        public TwitterUser GetUserInfo(string screenName)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.ShowUserInfo(screenName, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return TwitterUser.ParseJson(content);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
        }

        public int GetStatus_Retweeted_Count(long StatusId)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.ShowStatuses(StatusId, ref content);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var status = TwitterStatus.ParseJson(content);
                return status.RetweetCount;
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }
        }

        public void PostFavAdd(long id)
        {
            this.CheckAccountState();

            //if (this.favQueue == null) this.favQueue = new FavoriteQueue(this)

            //if (this.favQueue.Contains(id)) this.favQueue.Remove(id)

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.CreateFavorites(id, ref content);
            }
            catch(Exception ex)
            {
                //this.favQueue.Add(id)
                //return "Err:->FavoriteQueue:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")";
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            if (!RestrictFavCheck)
                return;

            //http://twitter.com/statuses/show/id.xml APIを発行して本文を取得

            try
            {
                res = twCon.ShowStatuses(id, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            TwitterStatus status;
            try
            {
                status = TwitterStatus.ParseJson(content);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
            if (status.Favorited != true)
                throw new WebApiException("NG(Restricted?)");
        }

        public void PostFavRemove(long id)
        {
            this.CheckAccountState();

            //if (this.favQueue == null) this.favQueue = new FavoriteQueue(this)

            //if (this.favQueue.Contains(id))
            //    this.favQueue.Remove(id)
            //    return "";
            //}

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.DestroyFavorites(id, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);
        }

        public TwitterUser PostUpdateProfile(string name, string url, string location, string description)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.UpdateProfile(name, url, location, description, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, content, ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return TwitterUser.ParseJson(content);
            }
            catch (SerializationException e)
            {
                var ex = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
            catch (Exception e)
            {
                var ex = new WebApiException("Err:Invalid Json!", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
        }

        public void PostUpdateProfileImage(string filename)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.UpdateProfileImage(new FileInfo(filename), ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public string Username
        {
            get
            {
                return twCon.AuthenticatedUsername;
            }
        }

        public long UserId
        {
            get
            {
                return twCon.AuthenticatedUserId;
            }
        }

        public string Password
        {
            get
            {
                return twCon.Password;
            }
        }

        private static MyCommon.ACCOUNT_STATE _accountState = MyCommon.ACCOUNT_STATE.Valid;
        public static MyCommon.ACCOUNT_STATE AccountState
        {
            get
            {
                return _accountState;
            }
            set
            {
                _accountState = value;
            }
        }

        public bool RestrictFavCheck { get; set; }

#region "バージョンアップ"
        public void GetTweenBinary(string strVer)
        {
            try
            {
                //本体
                if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/Tween" + strVer + ".gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                    Path.Combine(MyCommon.settingPath, "TweenNew.exe")))
                {
                    throw new WebApiException("Err:Download failed");
                }
                //英語リソース
                if (!Directory.Exists(Path.Combine(MyCommon.settingPath, "en")))
                {
                    Directory.CreateDirectory(Path.Combine(MyCommon.settingPath, "en"));
                }
                if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/TweenResEn" + strVer + ".gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                    Path.Combine(Path.Combine(MyCommon.settingPath, "en"), "Tween.resourcesNew.dll")))
                {
                    throw new WebApiException("Err:Download failed");
                }
                //その他言語圏のリソース。取得失敗しても継続
                //UIの言語圏のリソース
                var curCul = "";
                if (!Thread.CurrentThread.CurrentUICulture.IsNeutralCulture)
                {
                    var idx = Thread.CurrentThread.CurrentUICulture.Name.LastIndexOf('-');
                    if (idx > -1)
                    {
                        curCul = Thread.CurrentThread.CurrentUICulture.Name.Substring(0, idx);
                    }
                    else
                    {
                        curCul = Thread.CurrentThread.CurrentUICulture.Name;
                    }
                }
                else
                {
                    curCul = Thread.CurrentThread.CurrentUICulture.Name;
                }
                if (!string.IsNullOrEmpty(curCul) && curCul != "en" && curCul != "ja")
                {
                    if (!Directory.Exists(Path.Combine(MyCommon.settingPath, curCul)))
                    {
                        Directory.CreateDirectory(Path.Combine(MyCommon.settingPath, curCul));
                    }
                    if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/TweenRes" + curCul + strVer + ".gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                        Path.Combine(Path.Combine(MyCommon.settingPath, curCul), "Tween.resourcesNew.dll")))
                    {
                        //return "Err:Download failed";
                    }
                }
                //スレッドの言語圏のリソース
                string curCul2;
                if (!Thread.CurrentThread.CurrentCulture.IsNeutralCulture)
                {
                    var idx = Thread.CurrentThread.CurrentCulture.Name.LastIndexOf('-');
                    if (idx > -1)
                    {
                        curCul2 = Thread.CurrentThread.CurrentCulture.Name.Substring(0, idx);
                    }
                    else
                    {
                        curCul2 = Thread.CurrentThread.CurrentCulture.Name;
                    }
                }
                else
                {
                    curCul2 = Thread.CurrentThread.CurrentCulture.Name;
                }
                if (!string.IsNullOrEmpty(curCul2) && curCul2 != "en" && curCul2 != curCul)
                {
                    if (!Directory.Exists(Path.Combine(MyCommon.settingPath, curCul2)))
                    {
                        Directory.CreateDirectory(Path.Combine(MyCommon.settingPath, curCul2));
                    }
                    if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/TweenRes" + curCul2 + strVer + ".gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                    Path.Combine(Path.Combine(MyCommon.settingPath, curCul2), "Tween.resourcesNew.dll")))
                    {
                        //return "Err:Download failed";
                    }
                }

                //アップデータ
                if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/TweenUp3.gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                    Path.Combine(MyCommon.settingPath, "TweenUp3.exe")))
                {
                    throw new WebApiException("Err:Download failed");
                }
                //シリアライザDLL
                if (!(new HttpVarious()).GetDataToFile("http://tween.sourceforge.jp/TweenDll" + strVer + ".gz?" + DateTime.Now.ToString("yyMMddHHmmss") + Environment.TickCount.ToString(),
                                                    Path.Combine(MyCommon.settingPath, "TweenNew.XmlSerializers.dll")))
                {
                    throw new WebApiException("Err:Download failed");
                }
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:Download failed", ex);
            }
        }
#endregion

        public bool ReadOwnPost
        {
            get
            {
                return _readOwnPost;
            }
            set
            {
                _readOwnPost = value;
            }
        }

        public int FollowersCount { get; private set; }
        public int FriendsCount { get; private set; }
        public int StatusesCount { get; private set; }
        public string Location { get; private set; } = "";
        public string Bio { get; private set; } = "";

        /// <summary>ユーザーのフォロワー数などの情報を更新します</summary>
        private void UpdateUserStats(TwitterUser self)
        {
            this.FollowersCount = self.FollowersCount;
            this.FriendsCount = self.FriendsCount;
            this.StatusesCount = self.StatusesCount;
            this.Location = self.Location;
            this.Bio = self.Description;
        }

        /// <summary>
        /// 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
        /// </summary>
        public static bool VerifyApiResultCount(MyCommon.WORKERTYPE type, int count)
        {
            return count >= 20 && count <= GetMaxApiResultCount(type);
        }

        /// <summary>
        /// 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
        /// </summary>
        public static bool VerifyMoreApiResultCount(int count)
        {
            return count >= 20 && count <= 200;
        }

        /// <summary>
        /// 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
        /// </summary>
        public static bool VerifyFirstApiResultCount(int count)
        {
            return count >= 20 && count <= 200;
        }

        /// <summary>
        /// WORKERTYPEに応じた取得可能な最大件数を取得する
        /// </summary>
        public static int GetMaxApiResultCount(MyCommon.WORKERTYPE type)
        {
            // 参照: REST APIs - 各endpointのcountパラメータ
            // https://dev.twitter.com/rest/public
            switch (type)
            {
                case MyCommon.WORKERTYPE.Timeline:
                case MyCommon.WORKERTYPE.Reply:
                case MyCommon.WORKERTYPE.UserTimeline:
                case MyCommon.WORKERTYPE.Favorites:
                case MyCommon.WORKERTYPE.DirectMessegeRcv:
                case MyCommon.WORKERTYPE.DirectMessegeSnt:
                case MyCommon.WORKERTYPE.List:  // 不明
                    return 200;

                case MyCommon.WORKERTYPE.PublicSearch:
                    return 100;

                default:
                    throw new InvalidOperationException("Invalid type: " + type);
            }
        }

        /// <summary>
        /// WORKERTYPEに応じた取得件数を取得する
        /// </summary>
        public static int GetApiResultCount(MyCommon.WORKERTYPE type, bool more, bool startup)
        {
            if (type == MyCommon.WORKERTYPE.DirectMessegeRcv ||
                type == MyCommon.WORKERTYPE.DirectMessegeSnt)
            {
                return 20;
            }

            if (SettingCommon.Instance.UseAdditionalCount)
            {
                switch (type)
                {
                    case MyCommon.WORKERTYPE.Favorites:
                        if (SettingCommon.Instance.FavoritesCountApi != 0)
                            return SettingCommon.Instance.FavoritesCountApi;
                        break;
                    case MyCommon.WORKERTYPE.List:
                        if (SettingCommon.Instance.ListCountApi != 0)
                            return SettingCommon.Instance.ListCountApi;
                        break;
                    case MyCommon.WORKERTYPE.PublicSearch:
                        if (SettingCommon.Instance.SearchCountApi != 0)
                            return SettingCommon.Instance.SearchCountApi;
                        break;
                    case MyCommon.WORKERTYPE.UserTimeline:
                        if (SettingCommon.Instance.UserTimelineCountApi != 0)
                            return SettingCommon.Instance.UserTimelineCountApi;
                        break;
                }
                if (more && SettingCommon.Instance.MoreCountApi != 0)
                {
                    return Math.Min(SettingCommon.Instance.MoreCountApi, GetMaxApiResultCount(type));
                }
                if (startup && SettingCommon.Instance.FirstCountApi != 0 && type != MyCommon.WORKERTYPE.Reply)
                {
                    return Math.Min(SettingCommon.Instance.FirstCountApi, GetMaxApiResultCount(type));
                }
            }

            // 上記に当てはまらない場合の共通処理
            var count = SettingCommon.Instance.CountApi;

            if (type == MyCommon.WORKERTYPE.Reply)
                count = SettingCommon.Instance.CountApiReply;

            return Math.Min(count, GetMaxApiResultCount(type));
        }

        public void GetTimelineApi(bool read,
                                MyCommon.WORKERTYPE gType,
                                bool more,
                                bool startup)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(gType, more, startup);

            try
            {
                if (gType == MyCommon.WORKERTYPE.Timeline)
                {
                    if (more)
                    {
                        res = twCon.HomeTimeline(count, this.minHomeTimeline, null, ref content);
                    }
                    else
                    {
                        res = twCon.HomeTimeline(count, null, null, ref content);
                    }
                }
                else
                {
                    if (more)
                    {
                        res = twCon.Mentions(count, this.minMentions, null, ref content);
                    }
                    else
                    {
                        res = twCon.Mentions(count, null, null, ref content);
                    }
                }
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            var minimumId = CreatePostsFromJson(content, gType, null, read);

            if (minimumId != null)
            {
                if (gType == MyCommon.WORKERTYPE.Timeline)
                    this.minHomeTimeline = minimumId.Value;
                else
                    this.minMentions = minimumId.Value;
            }
        }

        public void GetUserTimelineApi(bool read,
                                         string userName,
                                         TabClass tab,
                                         bool more)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(MyCommon.WORKERTYPE.UserTimeline, more, false);

            try
            {
                if (string.IsNullOrEmpty(userName))
                {
                    var target = tab.User;
                    if (string.IsNullOrEmpty(target)) return;
                    userName = target;
                    res = twCon.UserTimeline(null, target, count, null, null, ref content);
                }
                else
                {
                    if (more)
                    {
                        res = twCon.UserTimeline(null, userName, count, tab.OldestId, null, ref content);
                    }
                    else
                    {
                        res = twCon.UserTimeline(null, userName, count, null, null, ref content);
                    }
                }
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            if (res == HttpStatusCode.Unauthorized)
                throw new WebApiException("Err:@" + userName + "'s Tweets are protected.");

            this.CheckStatusCode(res, content);

            var minimumId = CreatePostsFromJson(content, MyCommon.WORKERTYPE.UserTimeline, tab, read);

            if (minimumId != null)
                tab.OldestId = minimumId.Value;
        }

        public PostClass GetStatusApi(bool read, long id)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.ShowStatuses(id, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            if (res == HttpStatusCode.Forbidden)
                throw new WebApiException("Err:protected user's tweet", content);

            this.CheckStatusCode(res, content);

            TwitterStatus status;
            try
            {
                status = TwitterStatus.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }

            var item = CreatePostsFromStatusData(status);
            if (item == null)
                throw new WebApiException("Err:Can't create post", content);

            item.IsRead = read;
            if (item.IsMe && !read && _readOwnPost) item.IsRead = true;

            return item;
        }

        public void GetStatusApi(bool read, long id, TabClass tab)
        {
            var post = this.GetStatusApi(read, id);

            //非同期アイコン取得＆StatusDictionaryに追加
            if (tab != null && tab.IsInnerStorageTabType)
                tab.AddPostToInnerStorage(post);
            else
                TabInformations.GetInstance().AddPost(post);
        }

        private PostClass CreatePostsFromStatusData(TwitterStatus status)
        {
            return CreatePostsFromStatusData(status, false);
        }

        private PostClass CreatePostsFromStatusData(TwitterStatus status, bool favTweet)
        {
            var post = new PostClass();
            TwitterEntities entities;
            string sourceHtml;

            post.StatusId = status.Id;
            if (status.RetweetedStatus != null)
            {
                var retweeted = status.RetweetedStatus;

                post.CreatedAt = MyCommon.DateTimeParse(retweeted.CreatedAt);

                //Id
                post.RetweetedId = retweeted.Id;
                //本文
                post.TextFromApi = retweeted.Text;
                entities = retweeted.MergedEntities;
                sourceHtml = retweeted.Source;
                //Reply先
                post.InReplyToStatusId = retweeted.InReplyToStatusId;
                post.InReplyToUser = retweeted.InReplyToScreenName;
                post.InReplyToUserId = status.InReplyToUserId;

                if (favTweet)
                {
                    post.IsFav = true;
                }
                else
                {
                    //幻覚fav対策
                    var tc = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);
                    post.IsFav = tc.Contains(retweeted.Id);
                }

                if (retweeted.Coordinates != null)
                    post.PostGeo = new PostClass.StatusGeo(retweeted.Coordinates.Coordinates[0], retweeted.Coordinates.Coordinates[1]);

                //以下、ユーザー情報
                var user = retweeted.User;

                if (user == null || user.ScreenName == null || status.User.ScreenName == null) return null;

                post.UserId = user.Id;
                post.ScreenName = user.ScreenName;
                post.Nickname = user.Name.Trim();
                post.ImageUrl = user.ProfileImageUrlHttps;
                post.IsProtect = user.Protected;

                //Retweetした人
                post.RetweetedBy = status.User.ScreenName;
                post.RetweetedByUserId = status.User.Id;
                post.IsMe = post.RetweetedBy.ToLowerInvariant().Equals(_uname);
            }
            else
            {
                post.CreatedAt = MyCommon.DateTimeParse(status.CreatedAt);
                //本文
                post.TextFromApi = status.Text;
                entities = status.MergedEntities;
                sourceHtml = status.Source;
                post.InReplyToStatusId = status.InReplyToStatusId;
                post.InReplyToUser = status.InReplyToScreenName;
                post.InReplyToUserId = status.InReplyToUserId;

                if (favTweet)
                {
                    post.IsFav = true;
                }
                else
                {
                    //幻覚fav対策
                    var tc = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);
                    post.IsFav = tc.Contains(post.StatusId) && TabInformations.GetInstance()[post.StatusId].IsFav;
                }

                if (status.Coordinates != null)
                    post.PostGeo = new PostClass.StatusGeo(status.Coordinates.Coordinates[0], status.Coordinates.Coordinates[1]);

                //以下、ユーザー情報
                var user = status.User;

                if (user == null || user.ScreenName == null) return null;

                post.UserId = user.Id;
                post.ScreenName = user.ScreenName;
                post.Nickname = user.Name.Trim();
                post.ImageUrl = user.ProfileImageUrlHttps;
                post.IsProtect = user.Protected;
                post.IsMe = post.ScreenName.ToLowerInvariant().Equals(_uname);
            }
            //HTMLに整形
            string textFromApi = post.TextFromApi;
            post.Text = CreateHtmlAnchor(textFromApi, post.ReplyToList, entities, post.Media);
            post.TextFromApi = textFromApi;
            post.TextFromApi = this.ReplaceTextFromApi(post.TextFromApi, entities);
            post.TextFromApi = WebUtility.HtmlDecode(post.TextFromApi);
            post.TextFromApi = post.TextFromApi.Replace("<3", "\u2661");

            var quoteStatusIds = GetQuoteTweetStatusIds(entities);

            if (post.InReplyToStatusId != null)
                quoteStatusIds = quoteStatusIds.Concat(new[] { post.InReplyToStatusId.Value });

            post.QuoteStatusIds = quoteStatusIds
                .Where(x => x != post.StatusId && x != post.RetweetedId)
                .Distinct().ToArray();

            post.ExpandedUrls = entities.OfType<TwitterEntityUrl>()
                .Select(x => new PostClass.ExpandedUrlInfo(x.Url, x.ExpandedUrl))
                .ToArray();

            //Source整形
            var source = ParseSource(sourceHtml);
            post.Source = source.Item1;
            post.SourceUri = source.Item2;

            post.IsReply = post.ReplyToList.Contains(_uname);
            post.IsExcludeReply = false;

            if (post.IsMe)
            {
                post.IsOwl = false;
            }
            else
            {
                if (followerId.Count > 0) post.IsOwl = !followerId.Contains(post.UserId);
            }

            post.IsDm = false;
            return post;
        }

        /// <summary>
        /// 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
        /// </summary>
        public static IEnumerable<long> GetQuoteTweetStatusIds(IEnumerable<TwitterEntity> entities)
        {
            var urls = entities.OfType<TwitterEntityUrl>().Select(x => x.ExpandedUrl);

            return GetQuoteTweetStatusIds(urls);
        }

        public static IEnumerable<long> GetQuoteTweetStatusIds(IEnumerable<string> urls)
        {
            foreach (var url in urls)
            {
                var match = Twitter.StatusUrlRegex.Match(url);
                if (match.Success)
                {
                    long statusId;
                    if (long.TryParse(match.Groups["StatusId"].Value, out statusId))
                        yield return statusId;
                }
            }
        }

        private long? CreatePostsFromJson(string content, MyCommon.WORKERTYPE gType, TabClass tab, bool read)
        {
            TwitterStatus[] items;
            try
            {
                items = TwitterStatus.ParseJsonArray(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }

            long? minimumId = null;

            foreach (var status in items)
            {
                PostClass post = null;
                post = CreatePostsFromStatusData(status);
                if (post == null) continue;

                if (minimumId == null || minimumId.Value > post.StatusId)
                    minimumId = post.StatusId;

                //二重取得回避
                lock (LockObj)
                {
                    if (tab == null)
                    {
                        if (TabInformations.GetInstance().ContainsKey(post.StatusId)) continue;
                    }
                    else
                    {
                        if (tab.Contains(post.StatusId)) continue;
                    }
                }

                //RT禁止ユーザーによるもの
                if (gType != MyCommon.WORKERTYPE.UserTimeline &&
                    post.RetweetedByUserId != null && this.noRTId.Contains(post.RetweetedByUserId.Value)) continue;

                post.IsRead = read;
                if (post.IsMe && !read && _readOwnPost) post.IsRead = true;

                //非同期アイコン取得＆StatusDictionaryに追加
                if (tab != null && tab.IsInnerStorageTabType)
                    tab.AddPostToInnerStorage(post);
                else
                    TabInformations.GetInstance().AddPost(post);
            }

            return minimumId;
        }

        private long? CreatePostsFromSearchJson(string content, TabClass tab, bool read, int count, bool more)
        {
            TwitterSearchResult items;
            try
            {
                items = TwitterSearchResult.ParseJson(content);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }

            long? minimumId = null;

            foreach (var result in items.Statuses)
            {
                PostClass post = null;
                post = CreatePostsFromStatusData(result);

                if (post == null)
                {
                    // Search API は相変わらずぶっ壊れたデータを返すことがあるため、必要なデータが欠如しているものは取得し直す
                    try
                    {
                        post = this.GetStatusApi(read, result.Id);
                    }
                    catch (WebApiException)
                    {
                        continue;
                    }
                }

                if (minimumId == null || minimumId.Value > post.StatusId)
                    minimumId = post.StatusId;

                if (!more && post.StatusId > tab.SinceId) tab.SinceId = post.StatusId;
                //二重取得回避
                lock (LockObj)
                {
                    if (tab == null)
                    {
                        if (TabInformations.GetInstance().ContainsKey(post.StatusId)) continue;
                    }
                    else
                    {
                        if (tab.Contains(post.StatusId)) continue;
                    }
                }

                post.IsRead = read;
                if ((post.IsMe && !read) && this._readOwnPost) post.IsRead = true;

                //非同期アイコン取得＆StatusDictionaryに追加
                if (tab != null && tab.IsInnerStorageTabType)
                    tab.AddPostToInnerStorage(post);
                else
                    TabInformations.GetInstance().AddPost(post);
            }

            return minimumId;
        }

        private void CreateFavoritePostsFromJson(string content, bool read)
        {
            TwitterStatus[] item;
            try
            {
                item = TwitterStatus.ParseJsonArray(content);
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }

            var favTab = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.Favorites);

            foreach (var status in item)
            {
                //二重取得回避
                lock (LockObj)
                {
                    if (favTab.Contains(status.Id)) continue;
                }

                var post = CreatePostsFromStatusData(status, true);
                if (post == null) continue;

                post.IsRead = read;

                TabInformations.GetInstance().AddPost(post);
            }
        }

        public void GetListStatus(bool read,
                                TabClass tab,
                                bool more,
                                bool startup)
        {
            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(MyCommon.WORKERTYPE.List, more, startup);

            try
            {
                if (more)
                {
                    res = twCon.GetListsStatuses(tab.ListInfo.UserId, tab.ListInfo.Id, count, tab.OldestId, null, SettingCommon.Instance.IsListsIncludeRts, ref content);
                }
                else
                {
                    res = twCon.GetListsStatuses(tab.ListInfo.UserId, tab.ListInfo.Id, count, null, null, SettingCommon.Instance.IsListsIncludeRts, ref content);
                }
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            var minimumId = CreatePostsFromJson(content, MyCommon.WORKERTYPE.List, tab, read);

            if (minimumId != null)
                tab.OldestId = minimumId.Value;
        }

        /// <summary>
        /// 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。
        /// </summary>
        /// <returns>posts の中から検索されたリプライチェインの末端</returns>
        internal static PostClass FindTopOfReplyChain(IDictionary<Int64, PostClass> posts, Int64 startStatusId)
        {
            if (!posts.ContainsKey(startStatusId))
                throw new ArgumentException("startStatusId (" + startStatusId + ") が posts の中から見つかりませんでした。", nameof(startStatusId));

            var nextPost = posts[startStatusId];
            while (nextPost.InReplyToStatusId != null)
            {
                if (!posts.ContainsKey(nextPost.InReplyToStatusId.Value))
                    break;
                nextPost = posts[nextPost.InReplyToStatusId.Value];
            }

            return nextPost;
        }

        public void GetRelatedResult(bool read, TabClass tab)
        {
            var relPosts = new Dictionary<Int64, PostClass>();
            if (tab.RelationTargetPost.TextFromApi.Contains("@") && tab.RelationTargetPost.InReplyToStatusId == null)
            {
                //検索結果対応
                var p = TabInformations.GetInstance()[tab.RelationTargetPost.StatusId];
                if (p != null && p.InReplyToStatusId != null)
                {
                    tab.RelationTargetPost = p;
                }
                else
                {
                    p = this.GetStatusApi(read, tab.RelationTargetPost.StatusId);
                    tab.RelationTargetPost = p;
                }
            }
            relPosts.Add(tab.RelationTargetPost.StatusId, tab.RelationTargetPost);

            Exception lastException = null;

            // in_reply_to_status_id を使用してリプライチェインを辿る
            var nextPost = FindTopOfReplyChain(relPosts, tab.RelationTargetPost.StatusId);
            var loopCount = 1;
            while (nextPost.InReplyToStatusId != null && loopCount++ <= 20)
            {
                var inReplyToId = nextPost.InReplyToStatusId.Value;

                var inReplyToPost = TabInformations.GetInstance()[inReplyToId];
                if (inReplyToPost == null)
                {
                    try
                    {
                        inReplyToPost = this.GetStatusApi(read, inReplyToId);
                    }
                    catch (WebApiException ex)
                    {
                        lastException = ex;
                        break;
                    }
                }

                relPosts.Add(inReplyToPost.StatusId, inReplyToPost);

                nextPost = FindTopOfReplyChain(relPosts, nextPost.StatusId);
            }

            //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
            var text = tab.RelationTargetPost.Text;
            var ma = Twitter.StatusUrlRegex.Matches(text).Cast<Match>()
                .Concat(Twitter.ThirdPartyStatusUrlRegex.Matches(text).Cast<Match>());
            foreach (var _match in ma)
            {
                Int64 _statusId;
                if (Int64.TryParse(_match.Groups["StatusId"].Value, out _statusId))
                {
                    if (relPosts.ContainsKey(_statusId))
                        continue;

                    var p = TabInformations.GetInstance()[_statusId];
                    if (p == null)
                    {
                        try
                        {
                            p = this.GetStatusApi(read, _statusId);
                        }
                        catch (WebApiException ex)
                        {
                            lastException = ex;
                            break;
                        }
                    }

                    if (p != null)
                        relPosts.Add(p.StatusId, p);
                }
            }

            relPosts.Values.ToList().ForEach(p =>
            {
                if (p.IsMe && !read && this._readOwnPost)
                    p.IsRead = true;
                else
                    p.IsRead = read;

                tab.AddPostToInnerStorage(p);
            });

            if (lastException != null)
                throw new WebApiException(lastException.Message, lastException);
        }

        public void GetSearch(bool read,
                            TabClass tab,
                            bool more)
        {
            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(MyCommon.WORKERTYPE.PublicSearch, more, false);
            long? maxId = null;
            long? sinceId = null;
            if (more)
            {
                maxId = tab.OldestId - 1;
            }
            else
            {
                sinceId = tab.SinceId;
            }

            try
            {
                // TODO:一時的に40>100件に 件数変更UI作成の必要あり
                res = twCon.Search(tab.SearchWords, tab.SearchLang, count, maxId, sinceId, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }
            switch (res)
            {
                case HttpStatusCode.BadRequest:
                    throw new WebApiException("Invalid query", content);
                case HttpStatusCode.NotFound:
                    throw new WebApiException("Invalid query", content);
                case HttpStatusCode.PaymentRequired: //API Documentには420と書いてあるが、該当コードがないので402にしてある
                    throw new WebApiException("Search API Limit?", content);
                case HttpStatusCode.OK:
                    break;
                default:
                    throw new WebApiException("Err:" + res.ToString() + "(" + MethodBase.GetCurrentMethod().Name + ")", content);
            }

            if (!TabInformations.GetInstance().ContainsTab(tab))
                return;

            var minimumId =  this.CreatePostsFromSearchJson(content, tab, read, count, more);

            if (minimumId != null)
                tab.OldestId = minimumId.Value;
        }

        private void CreateDirectMessagesFromJson(string content, MyCommon.WORKERTYPE gType, bool read)
        {
            TwitterDirectMessage[] item;
            try
            {
                if (gType == MyCommon.WORKERTYPE.UserStream)
                {
                    item = new[] { TwitterStreamEventDirectMessage.ParseJson(content).DirectMessage };
                }
                else
                {
                    item = TwitterDirectMessage.ParseJsonArray(content);
                }
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Invalid Json!", content, ex);
            }

            foreach (var message in item)
            {
                var post = new PostClass();
                try
                {
                    post.StatusId = message.Id;
                    if (gType != MyCommon.WORKERTYPE.UserStream)
                    {
                        if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
                        {
                            if (minDirectmessage > post.StatusId) minDirectmessage = post.StatusId;
                        }
                        else
                        {
                            if (minDirectmessageSent > post.StatusId) minDirectmessageSent = post.StatusId;
                        }
                    }

                    //二重取得回避
                    lock (LockObj)
                    {
                        if (TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.DirectMessage).Contains(post.StatusId)) continue;
                    }
                    //sender_id
                    //recipient_id
                    post.CreatedAt = MyCommon.DateTimeParse(message.CreatedAt);
                    //本文
                    var textFromApi = message.Text;
                    //HTMLに整形
                    post.Text = CreateHtmlAnchor(textFromApi, post.ReplyToList, message.Entities, post.Media);
                    post.TextFromApi = this.ReplaceTextFromApi(textFromApi, message.Entities);
                    post.TextFromApi = WebUtility.HtmlDecode(post.TextFromApi);
                    post.TextFromApi = post.TextFromApi.Replace("<3", "\u2661");
                    post.IsFav = false;

                    post.QuoteStatusIds = GetQuoteTweetStatusIds(message.Entities).Distinct().ToArray();

                    post.ExpandedUrls = message.Entities.OfType<TwitterEntityUrl>()
                        .Select(x => new PostClass.ExpandedUrlInfo(x.Url, x.ExpandedUrl))
                        .ToArray();

                    //以下、ユーザー情報
                    TwitterUser user;
                    if (gType == MyCommon.WORKERTYPE.UserStream)
                    {
                        if (twCon.AuthenticatedUsername.Equals(message.Recipient.ScreenName, StringComparison.CurrentCultureIgnoreCase))
                        {
                            user = message.Sender;
                            post.IsMe = false;
                            post.IsOwl = true;
                        }
                        else
                        {
                            user = message.Recipient;
                            post.IsMe = true;
                            post.IsOwl = false;
                        }
                    }
                    else
                    {
                        if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
                        {
                            user = message.Sender;
                            post.IsMe = false;
                            post.IsOwl = true;
                        }
                        else
                        {
                            user = message.Recipient;
                            post.IsMe = true;
                            post.IsOwl = false;
                        }
                    }

                    post.UserId = user.Id;
                    post.ScreenName = user.ScreenName;
                    post.Nickname = user.Name.Trim();
                    post.ImageUrl = user.ProfileImageUrlHttps;
                    post.IsProtect = user.Protected;
                }
                catch(Exception ex)
                {
                    MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                    MessageBox.Show("Parse Error(CreateDirectMessagesFromJson)");
                    continue;
                }

                post.IsRead = read;
                if (post.IsMe && !read && _readOwnPost) post.IsRead = true;
                post.IsReply = false;
                post.IsExcludeReply = false;
                post.IsDm = true;

                var dmTab = TabInformations.GetInstance().GetTabByType(MyCommon.TabUsageType.DirectMessage);
                dmTab.AddPostToInnerStorage(post);
            }
        }

        public void GetDirectMessageApi(bool read,
                                MyCommon.WORKERTYPE gType,
                                bool more)
        {
            this.CheckAccountState();
            this.CheckAccessLevel(TwitterApiAccessLevel.ReadWriteAndDirectMessage);

            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(gType, more, false);

            try
            {
                if (gType == MyCommon.WORKERTYPE.DirectMessegeRcv)
                {
                    if (more)
                    {
                        res = twCon.DirectMessages(count, minDirectmessage, null, ref content);
                    }
                    else
                    {
                        res = twCon.DirectMessages(count, null, null, ref content);
                    }
                }
                else
                {
                    if (more)
                    {
                        res = twCon.DirectMessagesSent(count, minDirectmessageSent, null, ref content);
                    }
                    else
                    {
                        res = twCon.DirectMessagesSent(count, null, null, ref content);
                    }
                }
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message, ex);
            }

            this.CheckStatusCode(res, content);

            CreateDirectMessagesFromJson(content, gType, read);
        }

        public void GetFavoritesApi(bool read,
                            bool more)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            var count = GetApiResultCount(MyCommon.WORKERTYPE.Favorites, more, false);

            try
            {
                res = twCon.Favorites(count, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            CreateFavoritePostsFromJson(content, read);
        }

        private string ReplaceTextFromApi(string text, TwitterEntities entities)
        {
            if (entities != null)
            {
                if (entities.Urls != null)
                {
                    foreach (var m in entities.Urls)
                    {
                        if (!string.IsNullOrEmpty(m.DisplayUrl)) text = text.Replace(m.Url, m.DisplayUrl);
                    }
                }
                if (entities.Media != null)
                {
                    foreach (var m in entities.Media)
                    {
                        if (!string.IsNullOrEmpty(m.DisplayUrl)) text = text.Replace(m.Url, m.DisplayUrl);
                    }
                }
            }
            return text;
        }

        /// <summary>
        /// フォロワーIDを更新します
        /// </summary>
        /// <exception cref="WebApiException"/>
        public void RefreshFollowerIds()
        {
            if (MyCommon._endingFlag) return;

            var cursor = -1L;
            var newFollowerIds = new HashSet<long>();
            do
            {
                var ret = this.GetFollowerIdsApi(ref cursor);
                newFollowerIds.UnionWith(ret.Ids);
                cursor = ret.NextCursor;
            } while (cursor != 0);

            this.followerId = newFollowerIds;
            TabInformations.GetInstance().RefreshOwl(this.followerId);

            this._GetFollowerResult = true;
        }

        public bool GetFollowersSuccess
        {
            get
            {
                return _GetFollowerResult;
            }
        }

        private TwitterIds GetFollowerIdsApi(ref long cursor)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.FollowerIds(cursor, ref content);
            }
            catch(Exception e)
            {
                throw new WebApiException("Err:" + e.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", e);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var ret = TwitterIds.ParseJson(content);

                if (ret.Ids == null)
                {
                    var ex = new WebApiException("Err: ret.id == null (GetFollowerIdsApi)", content);
                    MyCommon.ExceptionOut(ex);
                    throw ex;
                }

                return ret;
            }
            catch(SerializationException e)
            {
                var ex = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
            catch(Exception e)
            {
                var ex = new WebApiException("Err:Invalid Json!", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
        }

        /// <summary>
        /// RT 非表示ユーザーを更新します
        /// </summary>
        /// <exception cref="WebApiException"/>
        public void RefreshNoRetweetIds()
        {
            if (MyCommon._endingFlag) return;

            this.noRTId = this.NoRetweetIdsApi();

            this._GetNoRetweetResult = true;
        }

        private long[] NoRetweetIdsApi()
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.NoRetweetIds(ref content);
            }
            catch(Exception e)
            {
                throw new WebApiException("Err:" + e.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", e);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return MyCommon.CreateDataFromJson<long[]>(content);
            }
            catch(SerializationException e)
            {
                var ex = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
            catch(Exception e)
            {
                var ex = new WebApiException("Err:Invalid Json!", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
        }

        public bool GetNoRetweetSuccess
        {
            get
            {
                return _GetNoRetweetResult;
            }
        }

        /// <summary>
        /// t.co の文字列長などの設定情報を更新します
        /// </summary>
        /// <exception cref="WebApiException"/>
        public void RefreshConfiguration()
        {
            this.Configuration = this.ConfigurationApi();
        }

        private TwitterConfiguration ConfigurationApi()
        {
            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.GetConfiguration(ref content);
            }
            catch(Exception e)
            {
                throw new WebApiException("Err:" + e.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", e);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return TwitterConfiguration.ParseJson(content);
            }
            catch(SerializationException e)
            {
                var ex = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
            catch(Exception e)
            {
                var ex = new WebApiException("Err:Invalid Json!", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
        }

        public void GetListsApi()
        {
            this.CheckAccountState();

            HttpStatusCode res;
            IEnumerable<ListElement> lists;
            var content = "";

            try
            {
                res = twCon.GetLists(this.Username, ref content);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                lists = TwitterList.ParseJsonArray(content)
                    .Select(x => new ListElement(x, this));
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            try
            {
                res = twCon.GetListsSubscriptions(this.Username, ref content);
            }
            catch (Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                lists = lists.Concat(TwitterList.ParseJsonArray(content)
                    .Select(x => new ListElement(x, this)));
            }
            catch (SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }

            TabInformations.GetInstance().SubscribableLists = lists.ToList();
        }

        public void DeleteList(string list_id)
        {
            HttpStatusCode res;
            var content = "";

            try
            {
                res = twCon.DeleteListID(this.Username, list_id, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public ListElement EditList(string list_id, string new_name, bool isPrivate, string description)
        {
            HttpStatusCode res;
            var content = "";

            try
            {
                res = twCon.UpdateListID(this.Username, list_id, new_name, isPrivate, description, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var le = TwitterList.ParseJson(content);
                return  new ListElement(le, this);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
        }

        public long GetListMembers(string list_id, List<UserInfo> lists, long cursor)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.GetListMembers(this.Username, list_id, cursor, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var users = TwitterUsers.ParseJson(content);
                Array.ForEach<TwitterUser>(
                    users.Users,
                    u => lists.Add(new UserInfo(u)));

                return users.NextCursor;
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
        }

        public void CreateListApi(string listName, bool isPrivate, string description)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.CreateLists(listName, isPrivate, description, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);

            try
            {
                var le = TwitterList.ParseJson(content);
                TabInformations.GetInstance().SubscribableLists.Add(new ListElement(le, this));
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex.Message + Environment.NewLine + content);
                throw new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                throw new WebApiException("Err:Invalid Json!", content, ex);
            }
        }

        public bool ContainsUserAtList(string listId, string user)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";

            try
            {
                res = this.twCon.ShowListMember(listId, user, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            if (res == HttpStatusCode.NotFound)
            {
                return false;
            }

            this.CheckStatusCode(res, content);

            try
            {
                TwitterUser.ParseJson(content);
                return true;
            }
            catch(Exception)
            {
                return false;
            }
        }

        public void AddUserToList(string listId, string user)
        {
            HttpStatusCode res;
            var content = "";

            try
            {
                res = twCon.CreateListMembers(listId, user, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public void RemoveUserToList(string listId, string user)
        {
            HttpStatusCode res;
            var content = "";

            try
            {
                res = twCon.DeleteListMembers(listId, user, ref content);
            }
            catch(Exception ex)
            {
                throw new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", ex);
            }

            this.CheckStatusCode(res, content);
        }

        public string CreateHtmlAnchor(string text, List<string> AtList, TwitterEntities entities, List<MediaInfo> media)
        {
            if (entities != null)
            {
                if (entities.Hashtags != null)
                {
                    lock (this.LockObj)
                    {
                        this._hashList.AddRange(entities.Hashtags.Select(x => "#" + x.Text));
                    }
                }
                if (entities.UserMentions != null)
                {
                    foreach (var ent in entities.UserMentions)
                    {
                        var screenName = ent.ScreenName.ToLowerInvariant();
                        if (!AtList.Contains(screenName))
                            AtList.Add(screenName);
                    }
                }
                if (entities.Media != null)
                {
                    if (media != null)
                    {
                        foreach (var ent in entities.Media)
                        {
                            if (!media.Any(x => x.Url == ent.MediaUrl))
                            {
                                if (ent.VideoInfo != null &&
                                    ent.Type == "animated_gif" || ent.Type == "video")
                                {
                                    //var videoUrl = ent.VideoInfo.Variants
                                    //    .Where(v => v.ContentType == "video/mp4")
                                    //    .OrderByDescending(v => v.Bitrate)
                                    //    .Select(v => v.Url).FirstOrDefault();
                                    media.Add(new MediaInfo(ent.MediaUrl, ent.ExpandedUrl));
                                }
                                else
                                    media.Add(new MediaInfo(ent.MediaUrl));
                            }
                        }
                    }
                }
            }

            // 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
            text = TweetFormatter.AutoLinkHtml(text, entities, keepTco: true);

            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>");
            text = PreProcessUrl(text); //IDN置換

            return text;
        }

        private static readonly Uri SourceUriBase = new Uri("https://twitter.com/");

        /// <summary>
        /// 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
        /// </summary>
        public static Tuple<string, Uri> ParseSource(string sourceHtml)
        {
            if (string.IsNullOrEmpty(sourceHtml))
                return Tuple.Create<string, Uri>("", null);

            string sourceText;
            Uri sourceUri;

            // sourceHtmlの例: <a href="http://twitter.com" rel="nofollow">Twitter Web Client</a>

            var match = Regex.Match(sourceHtml, "^<a href=\"(?<uri>.+?)\".*?>(?<text>.+)</a>$", RegexOptions.IgnoreCase);
            if (match.Success)
            {
                sourceText = WebUtility.HtmlDecode(match.Groups["text"].Value);
                try
                {
                    var uriStr = WebUtility.HtmlDecode(match.Groups["uri"].Value);
                    sourceUri = new Uri(SourceUriBase, uriStr);
                }
                catch (UriFormatException)
                {
                    sourceUri = null;
                }
            }
            else
            {
                sourceText = WebUtility.HtmlDecode(sourceHtml);
                sourceUri = null;
            }

            return Tuple.Create(sourceText, sourceUri);
        }

        public TwitterApiStatus GetInfoApi()
        {
            if (Twitter.AccountState != MyCommon.ACCOUNT_STATE.Valid) return null;

            if (MyCommon._endingFlag) return null;

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.RateLimitStatus(ref content);
            }
            catch (Exception)
            {
                this.ResetApiStatus();
                return null;
            }

            this.CheckStatusCode(res, content);

            try
            {
                MyCommon.TwitterApiInfo.UpdateFromJson(content);
                return MyCommon.TwitterApiInfo;
            }
            catch (Exception ex)
            {
                MyCommon.TraceOut(ex, MethodBase.GetCurrentMethod().Name + " " + content);
                MyCommon.TwitterApiInfo.Reset();
                return null;
            }
        }

        /// <summary>
        /// ブロック中のユーザーを更新します
        /// </summary>
        /// <exception cref="WebApiException"/>
        public void RefreshBlockIds()
        {
            if (MyCommon._endingFlag) return;

            var cursor = -1L;
            var newBlockIds = new HashSet<long>();
            do
            {
                var ret = this.GetBlockIdsApi(cursor);
                newBlockIds.UnionWith(ret.Ids);
                cursor = ret.NextCursor;
            } while (cursor != 0);

            newBlockIds.Remove(this.UserId); // 元のソースにあったので一応残しておく

            TabInformations.GetInstance().BlockIds = newBlockIds;
        }

        public TwitterIds GetBlockIdsApi(long cursor)
        {
            this.CheckAccountState();

            HttpStatusCode res;
            var content = "";
            try
            {
                res = twCon.GetBlockUserIds(ref content, cursor);
            }
            catch(Exception e)
            {
                throw new WebApiException("Err:" + e.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", e);
            }

            this.CheckStatusCode(res, content);

            try
            {
                return TwitterIds.ParseJson(content);
            }
            catch(SerializationException e)
            {
                var ex = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
            catch(Exception e)
            {
                var ex = new WebApiException("Err:Invalid Json!", content, e);
                MyCommon.TraceOut(ex);
                throw ex;
            }
        }

        /// <summary>
        /// ミュート中のユーザーIDを更新します
        /// </summary>
        /// <exception cref="WebApiException"/>
        public async Task RefreshMuteUserIdsAsync()
        {
            if (MyCommon._endingFlag) return;

            var ids = await TwitterIds.GetAllItemsAsync(this.GetMuteUserIdsApiAsync)
                .ConfigureAwait(false);

            TabInformations.GetInstance().MuteUserIds = new HashSet<long>(ids);
        }

        public async Task<TwitterIds> GetMuteUserIdsApiAsync(long cursor)
        {
            var content = "";

            try
            {
                var res = await Task.Run(() => twCon.GetMuteUserIds(ref content, cursor))
                    .ConfigureAwait(false);

                this.CheckStatusCode(res, content);

                return TwitterIds.ParseJson(content);
            }
            catch (WebException ex)
            {
                var ex2 = new WebApiException("Err:" + ex.Message + "(" + MethodBase.GetCurrentMethod().Name + ")", content, ex);
                MyCommon.TraceOut(ex2);
                throw ex2;
            }
            catch (SerializationException ex)
            {
                var ex2 = new WebApiException("Err:Json Parse Error(DataContractJsonSerializer)", content, ex);
                MyCommon.TraceOut(ex2);
                throw ex2;
            }
        }

        public string[] GetHashList()
        {
            string[] hashArray;
            lock (LockObj)
            {
                hashArray = _hashList.ToArray();
                _hashList.Clear();
            }
            return hashArray;
        }

        public string AccessToken
        {
            get
            {
                return twCon.AccessToken;
            }
        }

        public string AccessTokenSecret
        {
            get
            {
                return twCon.AccessTokenSecret;
            }
        }

        private void CheckAccountState()
        {
            if (Twitter.AccountState != MyCommon.ACCOUNT_STATE.Valid)
                throw new WebApiException("Auth error. Check your account");
        }

        private void CheckAccessLevel(TwitterApiAccessLevel accessLevelFlags)
        {
            if (!this.AccessLevel.HasFlag(accessLevelFlags))
                throw new WebApiException("Auth Err:try to re-authorization.");
        }

        private void CheckStatusCode(HttpStatusCode httpStatus, string responseText,
            [CallerMemberName] string callerMethodName = "")
        {
            if (httpStatus == HttpStatusCode.OK)
            {
                Twitter.AccountState = MyCommon.ACCOUNT_STATE.Valid;
                return;
            }

            if (string.IsNullOrWhiteSpace(responseText))
            {
                if (httpStatus == HttpStatusCode.Unauthorized)
                    Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;

                throw new WebApiException("Err:" + httpStatus + "(" + callerMethodName + ")");
            }

            try
            {
                var errors = TwitterError.ParseJson(responseText).Errors;
                if (errors == null || !errors.Any())
                {
                    throw new WebApiException("Err:" + httpStatus + "(" + callerMethodName + ")", responseText);
                }

                foreach (var error in errors)
                {
                    if (error.Code == TwitterErrorCode.InvalidToken ||
                        error.Code == TwitterErrorCode.SuspendedAccount)
                    {
                        Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
                    }
                }

                throw new WebApiException("Err:" + string.Join(",", errors.Select(x => x.ToString())) + "(" + callerMethodName + ")", responseText);
            }
            catch (SerializationException) { }

            throw new WebApiException("Err:" + httpStatus + "(" + callerMethodName + ")", responseText);
        }

        public int GetTextLengthRemain(string postText)
        {
            var matchDm = Twitter.DMSendTextRegex.Match(postText);
            if (matchDm.Success)
                return this.GetTextLengthRemainInternal(matchDm.Groups["body"].Value, isDm: true);

            return this.GetTextLengthRemainInternal(postText, isDm: false);
        }

        private int GetTextLengthRemainInternal(string postText, bool isDm)
        {
            var textLength = 0;

            var pos = 0;
            while (pos < postText.Length)
            {
                textLength++;

                if (char.IsSurrogatePair(postText, pos))
                    pos += 2; // サロゲートペアの場合は2文字分進める
                else
                    pos++;
            }

            var urls = TweetExtractor.ExtractUrls(postText);
            foreach (var url in urls)
            {
                var shortUrlLength = url.StartsWith("https://", StringComparison.OrdinalIgnoreCase)
                    ? this.Configuration.ShortUrlLengthHttps
                    : this.Configuration.ShortUrlLength;

                textLength += shortUrlLength - url.Length;
            }

            if (isDm)
                return this.Configuration.DmTextCharacterLimit - textLength;
            else
                return 140 - textLength;
        }


#region "UserStream"
        private string trackWord_ = "";
        public string TrackWord
        {
            get
            {
                return trackWord_;
            }
            set
            {
                trackWord_ = value;
            }
        }
        private bool allAtReply_ = false;
        public bool AllAtReply
        {
            get
            {
                return allAtReply_;
            }
            set
            {
                allAtReply_ = value;
            }
        }

        public event EventHandler NewPostFromStream;
        public event EventHandler UserStreamStarted;
        public event EventHandler UserStreamStopped;
        public event EventHandler<PostDeletedEventArgs> PostDeleted;
        public event EventHandler<UserStreamEventReceivedEventArgs> UserStreamEventReceived;
        private DateTime _lastUserstreamDataReceived;
        private TwitterUserstream userStream;

        public class FormattedEvent
        {
            public MyCommon.EVENTTYPE Eventtype { get; set; }
            public DateTime CreatedAt { get; set; }
            public string Event { get; set; }
            public string Username { get; set; }
            public string Target { get; set; }
            public Int64 Id { get; set; }
            public bool IsMe { get; set; }
        }

        public List<FormattedEvent> storedEvent_ = new List<FormattedEvent>();
        public List<FormattedEvent> StoredEvent
        {
            get
            {
                return storedEvent_;
            }
            set
            {
                storedEvent_ = value;
            }
        }

        private readonly IReadOnlyDictionary<string, MyCommon.EVENTTYPE> eventTable = new Dictionary<string, MyCommon.EVENTTYPE>
        {
            ["favorite"] = MyCommon.EVENTTYPE.Favorite,
            ["unfavorite"] = MyCommon.EVENTTYPE.Unfavorite,
            ["follow"] = MyCommon.EVENTTYPE.Follow,
            ["list_member_added"] = MyCommon.EVENTTYPE.ListMemberAdded,
            ["list_member_removed"] = MyCommon.EVENTTYPE.ListMemberRemoved,
            ["block"] = MyCommon.EVENTTYPE.Block,
            ["unblock"] = MyCommon.EVENTTYPE.Unblock,
            ["user_update"] = MyCommon.EVENTTYPE.UserUpdate,
            ["deleted"] = MyCommon.EVENTTYPE.Deleted,
            ["list_created"] = MyCommon.EVENTTYPE.ListCreated,
            ["list_destroyed"] = MyCommon.EVENTTYPE.ListDestroyed,
            ["list_updated"] = MyCommon.EVENTTYPE.ListUpdated,
            ["unfollow"] = MyCommon.EVENTTYPE.Unfollow,
            ["list_user_subscribed"] = MyCommon.EVENTTYPE.ListUserSubscribed,
            ["list_user_unsubscribed"] = MyCommon.EVENTTYPE.ListUserUnsubscribed,
            ["mute"] = MyCommon.EVENTTYPE.Mute,
            ["unmute"] = MyCommon.EVENTTYPE.Unmute,
            ["quoted_tweet"] = MyCommon.EVENTTYPE.QuotedTweet,
        };

        public bool IsUserstreamDataReceived
        {
            get
            {
                return DateTime.Now.Subtract(this._lastUserstreamDataReceived).TotalSeconds < 31;
            }
        }

        private void userStream_StatusArrived(string line)
        {
            this._lastUserstreamDataReceived = DateTime.Now;
            if (string.IsNullOrEmpty(line)) return;

            if (line.First() != '{' || line.Last() != '}')
            {
                MyCommon.TraceOut("Invalid JSON (StatusArrived):" + Environment.NewLine + line);
                return;
            }

            var isDm = false;

            try
            {
                using (var jsonReader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(line), XmlDictionaryReaderQuotas.Max))
                {
                    var xElm = XElement.Load(jsonReader);
                    if (xElm.Element("friends") != null)
                    {
                        Debug.WriteLine("friends");
                        return;
                    }
                    else if (xElm.Element("delete") != null)
                    {
                        Debug.WriteLine("delete");
                        Int64 id;
                        XElement idElm;
                        if ((idElm = xElm.Element("delete").Element("direct_message")?.Element("id")) != null)
                        {
                            id = 0;
                            long.TryParse(idElm.Value, out id);

                            this.PostDeleted?.Invoke(this, new PostDeletedEventArgs(id));
                        }
                        else if ((idElm = xElm.Element("delete").Element("status")?.Element("id")) != null)
                        {
                            id = 0;
                            long.TryParse(idElm.Value, out id);

                            this.PostDeleted?.Invoke(this, new PostDeletedEventArgs(id));
                        }
                        else
                        {
                            MyCommon.TraceOut("delete:" + line);
                            return;
                        }
                        for (int i = this.StoredEvent.Count - 1; i >= 0; i--)
                        {
                            var sEvt = this.StoredEvent[i];
                            if (sEvt.Id == id && (sEvt.Event == "favorite" || sEvt.Event == "unfavorite"))
                            {
                                this.StoredEvent.RemoveAt(i);
                            }
                        }
                        return;
                    }
                    else if (xElm.Element("limit") != null)
                    {
                        Debug.WriteLine(line);
                        return;
                    }
                    else if (xElm.Element("event") != null)
                    {
                        Debug.WriteLine("event: " + xElm.Element("event").Value);
                        CreateEventFromJson(line);
                        return;
                    }
                    else if (xElm.Element("direct_message") != null)
                    {
                        Debug.WriteLine("direct_message");
                        isDm = true;
                    }
                    else if (xElm.Element("retweeted_status") != null)
                    {
                        var sourceUserId = xElm.XPathSelectElement("/user/id_str").Value;
                        var targetUserId = xElm.XPathSelectElement("/retweeted_status/user/id_str").Value;

                        // 自分に関係しないリツイートの場合は無視する
                        var selfUserId = this.UserId.ToString();
                        if (sourceUserId == selfUserId || targetUserId == selfUserId)
                        {
                            // 公式 RT をイベントとしても扱う
                            var evt = CreateEventFromRetweet(xElm);
                            if (evt != null)
                            {
                                this.StoredEvent.Insert(0, evt);

                                this.UserStreamEventReceived?.Invoke(this, new UserStreamEventReceivedEventArgs(evt));
                            }
                        }

                        // 従来通り公式 RT の表示も行うため return しない
                    }
                    else if (xElm.Element("scrub_geo") != null)
                    {
                        try
                        {
                            TabInformations.GetInstance().ScrubGeoReserve(long.Parse(xElm.Element("scrub_geo").Element("user_id").Value),
                                                                        long.Parse(xElm.Element("scrub_geo").Element("up_to_status_id").Value));
                        }
                        catch(Exception)
                        {
                            MyCommon.TraceOut("scrub_geo:" + line);
                        }
                        return;
                    }
                }

                if (isDm)
                {
                    CreateDirectMessagesFromJson(line, MyCommon.WORKERTYPE.UserStream, false);
                }
                else
                {
                    CreatePostsFromJson("[" + line + "]", MyCommon.WORKERTYPE.Timeline, null, false);
                }
            }
            catch (WebApiException ex)
            {
                MyCommon.TraceOut(ex);
                return;
            }
            catch(NullReferenceException)
            {
                MyCommon.TraceOut("NullRef StatusArrived: " + line);
            }

            this.NewPostFromStream?.Invoke(this, EventArgs.Empty);
        }

        /// <summary>
        /// UserStreamsから受信した公式RTをイベントに変換します
        /// </summary>
        private FormattedEvent CreateEventFromRetweet(XElement xElm)
        {
            return new FormattedEvent
            {
                Eventtype = MyCommon.EVENTTYPE.Retweet,
                Event = "retweet",
                CreatedAt = MyCommon.DateTimeParse(xElm.XPathSelectElement("/created_at").Value),
                IsMe = xElm.XPathSelectElement("/user/id_str").Value == this.UserId.ToString(),
                Username = xElm.XPathSelectElement("/user/screen_name").Value,
                Target = string.Format("@{0}:{1}", new[]
                {
                    xElm.XPathSelectElement("/retweeted_status/user/screen_name").Value,
                    WebUtility.HtmlDecode(xElm.XPathSelectElement("/retweeted_status/text").Value),
                }),
                Id = long.Parse(xElm.XPathSelectElement("/retweeted_status/id_str").Value),
            };
        }

        private void CreateEventFromJson(string content)
        {
            TwitterStreamEvent eventData = null;
            try
            {
                eventData = TwitterStreamEvent.ParseJson(content);
            }
            catch(SerializationException ex)
            {
                MyCommon.TraceOut(ex, "Event Serialize Exception!" + Environment.NewLine + content);
            }
            catch(Exception ex)
            {
                MyCommon.TraceOut(ex, "Event Exception!" + Environment.NewLine + content);
            }

            var evt = new FormattedEvent();
            evt.CreatedAt = MyCommon.DateTimeParse(eventData.CreatedAt);
            evt.Event = eventData.Event;
            evt.Username = eventData.Source.ScreenName;
            evt.IsMe = evt.Username.ToLowerInvariant().Equals(this.Username.ToLowerInvariant());

            MyCommon.EVENTTYPE eventType;
            eventTable.TryGetValue(eventData.Event, out eventType);
            evt.Eventtype = eventType;

            TwitterStreamEvent<TwitterStatus> tweetEvent;

            switch (eventData.Event)
            {
                case "access_revoked":
                case "access_unrevoked":
                case "user_delete":
                case "user_suspend":
                    return;
                case "follow":
                    if (eventData.Target.ScreenName.ToLowerInvariant().Equals(_uname))
                    {
                        if (!this.followerId.Contains(eventData.Source.Id)) this.followerId.Add(eventData.Source.Id);
                    }
                    else
                    {
                        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。
                    }
                    evt.Target = "";
                    break;
                case "unfollow":
                    evt.Target = "@" + eventData.Target.ScreenName;
                    break;
                case "favorited_retweet":
                case "retweeted_retweet":
                    return;
                case "favorite":
                case "unfavorite":
                    tweetEvent = TwitterStreamEvent<TwitterStatus>.ParseJson(content);
                    evt.Target = "@" + tweetEvent.TargetObject.User.ScreenName + ":" + WebUtility.HtmlDecode(tweetEvent.TargetObject.Text);
                    evt.Id = tweetEvent.TargetObject.Id;

                    if (SettingCommon.Instance.IsRemoveSameEvent)
                    {
                        if (this.StoredEvent.Any(ev => ev.Username == evt.Username && ev.Eventtype == evt.Eventtype && ev.Target == evt.Target))
                            return;
                    }

                    var tabinfo = TabInformations.GetInstance();

                    PostClass post;
                    var statusId = tweetEvent.TargetObject.Id;
                    if (!tabinfo.Posts.TryGetValue(statusId, out post))
                        break;

                    if (eventData.Event == "favorite")
                    {
                        var favTab = tabinfo.GetTabByType(MyCommon.TabUsageType.Favorites);
                        if (!favTab.Contains(post.StatusId))
                            favTab.AddPostImmediately(post.StatusId, post.IsRead);

                        if (tweetEvent.Source.Id == this.UserId)
                        {
                            post.IsFav = true;
                        }
                        else if (tweetEvent.Target.Id == this.UserId)
                        {
                            post.FavoritedCount++;

                            if (SettingCommon.Instance.FavEventUnread)
                                tabinfo.SetReadAllTab(post.StatusId, read: false);
                        }
                    }
                    else // unfavorite
                    {
                        if (tweetEvent.Source.Id == this.UserId)
                        {
                            post.IsFav = false;
                        }
                        else if (tweetEvent.Target.Id == this.UserId)
                        {
                            post.FavoritedCount = Math.Max(0, post.FavoritedCount - 1);
                        }
                    }
                    break;
                case "quoted_tweet":
                    if (evt.IsMe) return;

                    tweetEvent = TwitterStreamEvent<TwitterStatus>.ParseJson(content);
                    evt.Target = "@" + tweetEvent.TargetObject.User.ScreenName + ":" + WebUtility.HtmlDecode(tweetEvent.TargetObject.Text);
                    evt.Id = tweetEvent.TargetObject.Id;

                    if (SettingCommon.Instance.IsRemoveSameEvent)
                    {
                        if (this.StoredEvent.Any(ev => ev.Username == evt.Username && ev.Eventtype == evt.Eventtype && ev.Target == evt.Target))
                            return;
                    }
                    break;
                case "list_member_added":
                case "list_member_removed":
                case "list_created":
                case "list_destroyed":
                case "list_updated":
                case "list_user_subscribed":
                case "list_user_unsubscribed":
                    var listEvent = TwitterStreamEvent<TwitterList>.ParseJson(content);
                    evt.Target = listEvent.TargetObject.FullName;
                    break;
                case "block":
                    if (!TabInformations.GetInstance().BlockIds.Contains(eventData.Target.Id)) TabInformations.GetInstance().BlockIds.Add(eventData.Target.Id);
                    evt.Target = "";
                    break;
                case "unblock":
                    if (TabInformations.GetInstance().BlockIds.Contains(eventData.Target.Id)) TabInformations.GetInstance().BlockIds.Remove(eventData.Target.Id);
                    evt.Target = "";
                    break;
                case "user_update":
                    evt.Target = "";
                    break;
                
                // Mute / Unmute
                case "mute":
                    evt.Target = "@" + eventData.Target.ScreenName;
                    if (!TabInformations.GetInstance().MuteUserIds.Contains(eventData.Target.Id))
                    {
                        TabInformations.GetInstance().MuteUserIds.Add(eventData.Target.Id);
                    }
                    break;
                case "unmute":
                    evt.Target = "@" + eventData.Target.ScreenName;
                    if (TabInformations.GetInstance().MuteUserIds.Contains(eventData.Target.Id))
                    {
                        TabInformations.GetInstance().MuteUserIds.Remove(eventData.Target.Id);
                    }
                    break;

                default:
                    MyCommon.TraceOut("Unknown Event:" + evt.Event + Environment.NewLine + content);
                    break;
            }
            this.StoredEvent.Insert(0, evt);

            this.UserStreamEventReceived?.Invoke(this, new UserStreamEventReceivedEventArgs(evt));
        }

        private void userStream_Started()
        {
            this.UserStreamStarted?.Invoke(this, EventArgs.Empty);
        }

        private void userStream_Stopped()
        {
            this.UserStreamStopped?.Invoke(this, EventArgs.Empty);
        }

        public bool UserStreamEnabled
        {
            get
            {
                return userStream == null ? false : userStream.Enabled;
            }
        }

        public void StartUserStream()
        {
            if (userStream != null)
            {
                StopUserStream();
            }
            userStream = new TwitterUserstream(twCon);
            userStream.StatusArrived += userStream_StatusArrived;
            userStream.Started += userStream_Started;
            userStream.Stopped += userStream_Stopped;
            userStream.Start(this.AllAtReply, this.TrackWord);
        }

        public void StopUserStream()
        {
            userStream?.Dispose();
            userStream = null;
            if (!MyCommon._endingFlag)
            {
                this.UserStreamStopped?.Invoke(this, EventArgs.Empty);
            }
        }

        public void ReconnectUserStream()
        {
            if (userStream != null)
            {
                this.StartUserStream();
            }
        }

        private class TwitterUserstream : IDisposable
        {
            public event Action<string> StatusArrived;
            public event Action Stopped;
            public event Action Started;
            private HttpTwitter twCon;

            private Thread _streamThread;
            private bool _streamActive;

            private bool _allAtreplies = false;
            private string _trackwords = "";

            public TwitterUserstream(HttpTwitter twitterConnection)
            {
                twCon = (HttpTwitter)twitterConnection.Clone();
            }

            public void Start(bool allAtReplies, string trackwords)
            {
                this.AllAtReplies = allAtReplies;
                this.TrackWords = trackwords;
                _streamActive = true;
                if (_streamThread != null && _streamThread.IsAlive) return;
                _streamThread = new Thread(UserStreamLoop);
                _streamThread.Name = "UserStreamReceiver";
                _streamThread.IsBackground = true;
                _streamThread.Start();
            }

            public bool Enabled
            {
                get
                {
                    return _streamActive;
                }
            }

            public bool AllAtReplies
            {
                get
                {
                    return _allAtreplies;
                }
                set
                {
                    _allAtreplies = value;
                }
            }

            public string TrackWords
            {
                get
                {
                    return _trackwords;
                }
                set
                {
                    _trackwords = value;
                }
            }

            private void UserStreamLoop()
            {
                var sleepSec = 0;
                do
                {
                    Stream st = null;
                    StreamReader sr = null;
                    try
                    {
                        if (!MyCommon.IsNetworkAvailable())
                        {
                            sleepSec = 30;
                            continue;
                        }

                        Started?.Invoke();

                        var res = twCon.UserStream(ref st, _allAtreplies, _trackwords, Networking.GetUserAgentString());

                        switch (res)
                        {
                            case HttpStatusCode.OK:
                                Twitter.AccountState = MyCommon.ACCOUNT_STATE.Valid;
                                break;
                            case HttpStatusCode.Unauthorized:
                                Twitter.AccountState = MyCommon.ACCOUNT_STATE.Invalid;
                                sleepSec = 120;
                                continue;
                        }

                        if (st == null)
                        {
                            sleepSec = 30;
                            //MyCommon.TraceOut("Stop:stream is null")
                            continue;
                        }

                        sr = new StreamReader(st);

                        while (_streamActive && !sr.EndOfStream && Twitter.AccountState == MyCommon.ACCOUNT_STATE.Valid)
                        {
                            StatusArrived?.Invoke(sr.ReadLine());
                            //this.LastTime = Now;
                        }

                        if (sr.EndOfStream || Twitter.AccountState == MyCommon.ACCOUNT_STATE.Invalid)
                        {
                            sleepSec = 30;
                            //MyCommon.TraceOut("Stop:EndOfStream")
                            continue;
                        }
                        break;
                    }
                    catch(WebException ex)
                    {
                        if (ex.Status == WebExceptionStatus.Timeout)
                        {
                            sleepSec = 30;                        //MyCommon.TraceOut("Stop:Timeout")
                        }
                        else if (ex.Response != null && (int)((HttpWebResponse)ex.Response).StatusCode == 420)
                        {
                            //MyCommon.TraceOut("Stop:Connection Limit")
                            break;
                        }
                        else
                        {
                            sleepSec = 30;
                            //MyCommon.TraceOut("Stop:WebException " + ex.Status.ToString())
                        }
                    }
                    catch(ThreadAbortException)
                    {
                        break;
                    }
                    catch(IOException)
                    {
                        sleepSec = 30;
                        //MyCommon.TraceOut("Stop:IOException with Active." + Environment.NewLine + ex.Message)
                    }
                    catch(ArgumentException ex)
                    {
                        //System.ArgumentException: ストリームを読み取れませんでした。
                        //サーバー側もしくは通信経路上で切断された場合？タイムアウト頻発後発生
                        sleepSec = 30;
                        MyCommon.TraceOut(ex, "Stop:ArgumentException");
                    }
                    catch(Exception ex)
                    {
                        MyCommon.TraceOut("Stop:Exception." + Environment.NewLine + ex.Message);
                        MyCommon.ExceptionOut(ex);
                        sleepSec = 30;
                    }
                    finally
                    {
                        if (_streamActive)
                        {
                            Stopped?.Invoke();
                        }
                        twCon.RequestAbort();
                        sr?.Close();
                        if (sleepSec > 0)
                        {
                            var ms = 0;
                            while (_streamActive && ms < sleepSec * 1000)
                            {
                                Thread.Sleep(500);
                                ms += 500;
                            }
                        }
                        sleepSec = 0;
                    }
                } while (this._streamActive);

                if (_streamActive)
                {
                    Stopped?.Invoke();
                }
                MyCommon.TraceOut("Stop:EndLoop");
            }

#region "IDisposable Support"
            private bool disposedValue; // 重複する呼び出しを検出するには

            // IDisposable
            protected virtual void Dispose(bool disposing)
            {
                if (!this.disposedValue)
                {
                    if (disposing)
                    {
                        _streamActive = false;
                        if (_streamThread != null && _streamThread.IsAlive)
                        {
                            _streamThread.Abort();
                        }
                    }
                }
                this.disposedValue = true;
            }

            //protected Overrides void Finalize()
            //{
            //    // 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。
            //    Dispose(false)
            //    MyBase.Finalize()
            //}

            // 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。
            public void Dispose()
            {
                // 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。
                Dispose(true);
                GC.SuppressFinalize(this);
            }
#endregion

        }
#endregion

#region "IDisposable Support"
        private bool disposedValue; // 重複する呼び出しを検出するには

        // IDisposable
        protected virtual void Dispose(bool disposing)
        {
            if (!this.disposedValue)
            {
                if (disposing)
                {
                    this.StopUserStream();
                }
            }
            this.disposedValue = true;
        }

        //protected Overrides void Finalize()
        //{
        //    // 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。
        //    Dispose(false)
        //    MyBase.Finalize()
        //}

        // 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。
        public void Dispose()
        {
            // 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。
            Dispose(true);
            GC.SuppressFinalize(this);
        }
#endregion
    }

    public class PostDeletedEventArgs : EventArgs
    {
        public long StatusId { get; }

        public PostDeletedEventArgs(long statusId)
        {
            this.StatusId = statusId;
        }
    }

    public class UserStreamEventReceivedEventArgs : EventArgs
    {
        public Twitter.FormattedEvent EventData { get; }

        public UserStreamEventReceivedEventArgs(Twitter.FormattedEvent eventData)
        {
            this.EventData = eventData;
        }
    }
}
