// 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) 2011      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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Windows.Forms;
using System.Web;
using System.Globalization;
using System.Security.Cryptography;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections;
using System.Security.Principal;
using System.Runtime.Serialization.Json;
using System.Reflection;
using System.Diagnostics;
using System.Text.RegularExpressions;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
using OpenTween.Api;

namespace OpenTween
{
    public sealed class MyCommon
    {
        private static readonly object LockObj = new object();
        public static bool _endingFlag;        //終了フラグ
        public static string cultureStr = null;
        public static string settingPath;

        public enum IconSizes
        {
            IconNone = 0,
            Icon16 = 1,
            Icon24 = 2,
            Icon48 = 3,
            Icon48_2 = 4,
        }

        public enum NameBalloonEnum
        {
            None,
            UserID,
            NickName,
        }

        public enum DispTitleEnum
        {
            None,
            Ver,
            Post,
            UnreadRepCount,
            UnreadAllCount,
            UnreadAllRepCount,
            UnreadCountAllCount,
            OwnStatus,
        }

        public enum LogUnitEnum
        {
            Minute,
            Hour,
            Day,
        }

        public enum UploadFileType
        {
            Invalid,
            Picture,
            MultiMedia,
        }

        public enum UrlConverter
        {
            TinyUrl,
            Isgd,
            Twurl,
            Bitly,
            Jmp,
            Uxnu,
            //特殊
            Nicoms,
            //廃止
            Unu = -1,
        }

        public enum HITRESULT
        {
            None,
            Copy,
            CopyAndMark,
            Move,
            Exclude,
        }

        public enum HttpTimeOut
        {
            MinValue = 10,
            MaxValue = 120,
            DefaultValue = 20,
        }

        //Backgroundworkerへ処理種別を通知するための引数用enum
        public enum WORKERTYPE
        {
            Timeline,                //タイムライン取得
            Reply,                   //返信取得
            DirectMessegeRcv,        //受信DM取得
            DirectMessegeSnt,        //送信DM取得
            PostMessage,             //発言POST
            FavAdd,                  //Fav追加
            FavRemove,               //Fav削除
            Follower,                //Followerリスト取得
            Favorites,               //Fav取得
            Retweet,                 //Retweetする
            PublicSearch,            //公式検索
            List,                    //Lists
            Related,                 //関連発言
            UserStream,              //UserStream
            UserTimeline,            //UserTimeline
            BlockIds,                //Blocking/ids
            Configuration,           //Twitter Configuration読み込み
            NoRetweetIds,            //RT非表示ユーザー取得
            //////
            ErrorState,              //エラー表示のみで後処理終了(認証エラー時など)
        }

        public static class DEFAULTTAB
        {
            public const string RECENT = "Recent";
            public const string REPLY = "Reply";
            public const string DM = "Direct";
            public const string FAV = "Favorites";

            //private string dummy;

            //private object ReferenceEquals()
            //{
            //    return new object();
            //}
            //private object Equals()
            //{
            //    return new object();
            //}
        }

        public static readonly object Block = null;
        public static bool TraceFlag = false;

#if DEBUG
        public static bool DebugBuild = true;
#else
        public static bool DebugBuild = false;
#endif

        public enum ACCOUNT_STATE
        {
            Valid,
            Invalid,
        }

        public enum REPLY_ICONSTATE
        {
            None,
            StaticIcon,
            BlinkIcon,
        }

        [FlagsAttribute()]
        public enum EVENTTYPE
        {
            None = 0,
            Favorite = 1,
            Unfavorite = 2,
            Follow = 4,
            ListMemberAdded = 8,
            ListMemberRemoved = 16,
            Block = 32,
            Unblock = 64,
            UserUpdate = 128,
            Deleted = 256,
            ListCreated = 512,
            ListUpdated = 1024,
            Unfollow = 2048,
            ListUserSubscribed = 4096,
            ListUserUnsubscribed = 8192,
            ListDestroyed = 16384,

            All = (None | Favorite | Unfavorite | Follow | ListMemberAdded | ListMemberRemoved |
                   Block | Unblock | UserUpdate | Deleted | ListCreated | ListUpdated | Unfollow |
                   ListUserSubscribed | ListUserUnsubscribed | ListDestroyed),
        }

        public static string GetErrorLogPath()
        {
            return Path.Combine(Path.GetDirectoryName(MyCommon.EntryAssembly.Location), "ErrorLogs");
        }

        public static void TraceOut(WebApiException ex)
        {
            var message = ExceptionOutMessage(ex);

            if (ex.ResponseText != null)
                message += Environment.NewLine + "------- Response Data -------" + Environment.NewLine + ex.ResponseText;

            TraceOut(TraceFlag, message);
        }

        public static void TraceOut(Exception ex, string Message)
        {
            var buf = ExceptionOutMessage(ex);
            TraceOut(TraceFlag, Message + Environment.NewLine + buf);
        }

        public static void TraceOut(string Message)
        {
            TraceOut(TraceFlag, Message);
        }

        public static void TraceOut(bool OutputFlag, string Message)
        {
            lock (LockObj)
            {
                if (!OutputFlag) return;

                var logPath = MyCommon.GetErrorLogPath();
                if (!Directory.Exists(logPath))
                    Directory.CreateDirectory(logPath);

                var now = DateTime.Now;
                var fileName = string.Format("{0}Trace-{1:0000}{2:00}{3:00}-{4:00}{5:00}{6:00}.log", GetAssemblyName(), now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second);
                fileName = Path.Combine(logPath, fileName);

                using (var writer = new StreamWriter(fileName))
                {
                    writer.WriteLine("**** TraceOut: {0} ****", DateTime.Now.ToString());
                    writer.WriteLine(Properties.Resources.TraceOutText1, ApplicationSettings.FeedbackEmailAddress);
                    writer.WriteLine(Properties.Resources.TraceOutText2, ApplicationSettings.FeedbackTwitterName);
                    writer.WriteLine();
                    writer.WriteLine(Properties.Resources.TraceOutText3);
                    writer.WriteLine(Properties.Resources.TraceOutText4, Environment.OSVersion.VersionString);
                    writer.WriteLine(Properties.Resources.TraceOutText5, Environment.Version.ToString());
                    writer.WriteLine(Properties.Resources.TraceOutText6, MyCommon.GetAssemblyName(), fileVersion);
                    writer.WriteLine(Message);
                    writer.WriteLine();
                }
            }
        }

        // エラー内容をバッファに書き出し
        // 注意：最終的にファイル出力されるエラーログに記録されるため次の情報は書き出さない
        // 文頭メッセージ、権限、動作環境
        // Dataプロパティにある終了許可フラグのパースもここで行う

        public static string ExceptionOutMessage(Exception ex)
        {
            bool IsTerminatePermission = true;
            return ExceptionOutMessage(ex, ref IsTerminatePermission);
        }

        public static string ExceptionOutMessage(Exception ex, ref bool IsTerminatePermission)
        {
            if (ex == null) return "";

            var buf = new StringBuilder();

            buf.AppendFormat(Properties.Resources.UnhandledExceptionText8, ex.GetType().FullName, ex.Message);
            buf.AppendLine();
            if (ex.Data != null)
            {
                var needHeader = true;
                foreach (DictionaryEntry dt in ex.Data)
                {
                    if (needHeader)
                    {
                        buf.AppendLine();
                        buf.AppendLine("-------Extra Information-------");
                        needHeader = false;
                    }
                    buf.AppendFormat("{0}  :  {1}", dt.Key, dt.Value);
                    buf.AppendLine();
                    if (dt.Key.Equals("IsTerminatePermission"))
                    {
                        IsTerminatePermission = (bool)dt.Value;
                    }
                }
                if (!needHeader)
                {
                    buf.AppendLine("-----End Extra Information-----");
                }
            }
            buf.AppendLine(ex.StackTrace);
            buf.AppendLine();

            //InnerExceptionが存在する場合書き出す
            var _ex = ex.InnerException;
            var nesting = 0;
            while (_ex != null)
            {
                buf.AppendFormat("-----InnerException[{0}]-----\r\n", nesting);
                buf.AppendLine();
                buf.AppendFormat(Properties.Resources.UnhandledExceptionText8, _ex.GetType().FullName, _ex.Message);
                buf.AppendLine();
                if (_ex.Data != null)
                {
                    var needHeader = true;

                    foreach (DictionaryEntry dt in _ex.Data)
                    {
                        if (needHeader)
                        {
                            buf.AppendLine();
                            buf.AppendLine("-------Extra Information-------");
                            needHeader = false;
                        }
                        buf.AppendFormat("{0}  :  {1}", dt.Key, dt.Value);
                        if (dt.Key.Equals("IsTerminatePermission"))
                        {
                            IsTerminatePermission = (bool)dt.Value;
                        }
                    }
                    if (!needHeader)
                    {
                        buf.AppendLine("-----End Extra Information-----");
                    }
                }
                buf.AppendLine(_ex.StackTrace);
                buf.AppendLine();
                nesting++;
                _ex = _ex.InnerException;
            }
            return buf.ToString();
        }

        public static bool ExceptionOut(Exception ex)
        {
            lock (LockObj)
            {
                var IsTerminatePermission = true;

                var logPath = MyCommon.GetErrorLogPath();
                if (!Directory.Exists(logPath))
                    Directory.CreateDirectory(logPath);

                var now = DateTime.Now;
                var fileName = string.Format("{0}-{1:0000}{2:00}{3:00}-{4:00}{5:00}{6:00}.log", GetAssemblyName(), now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second);
                fileName = Path.Combine(logPath, fileName);

                using (var writer = new StreamWriter(fileName))
                {
                    var ident = WindowsIdentity.GetCurrent();
                    var princ = new WindowsPrincipal(ident);

                    writer.WriteLine(Properties.Resources.UnhandledExceptionText1, DateTime.Now.ToString());
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText2, ApplicationSettings.FeedbackEmailAddress);
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText3, ApplicationSettings.FeedbackTwitterName);
                    // 権限書き出し
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText11 + princ.IsInRole(WindowsBuiltInRole.Administrator).ToString());
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText12 + princ.IsInRole(WindowsBuiltInRole.User).ToString());
                    writer.WriteLine();
                    // OSVersion,AppVersion書き出し
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText4);
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText5, Environment.OSVersion.VersionString);
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText6, Environment.Version.ToString());
                    writer.WriteLine(Properties.Resources.UnhandledExceptionText7, MyCommon.GetAssemblyName(), fileVersion);

                    writer.Write(ExceptionOutMessage(ex, ref IsTerminatePermission));
                    writer.Flush();
                }

                switch (MessageBox.Show(MyCommon.ReplaceAppName(string.Format(Properties.Resources.UnhandledExceptionText9, fileName, ApplicationSettings.FeedbackEmailAddress, ApplicationSettings.FeedbackTwitterName, Environment.NewLine)),
                                   Properties.Resources.UnhandledExceptionText10, MessageBoxButtons.YesNoCancel, MessageBoxIcon.Error))
                {
                    case DialogResult.Yes:
                        Process.Start(fileName);
                        return false;
                    case DialogResult.No:
                        return false;
                    case DialogResult.Cancel:
                        return IsTerminatePermission;
                    default:
                        throw new Exception("");
                }
            }
        }

        /// <summary>
        /// URLに含まれているマルチバイト文字列を%xx形式でエンコードします。
        /// <newpara>
        /// マルチバイト文字のコードはUTF-8またはUnicodeで自動的に判断します。
        /// </newpara>
        /// </summary>
        /// <param name="_input">エンコード対象のURL</param>
        /// <returns>マルチバイト文字の部分をUTF-8/%xx形式でエンコードした文字列を返します。</returns>

        public static string urlEncodeMultibyteChar(string _input)
        {
            Uri uri = null;
            var sb = new StringBuilder(256);
            var result = "";
            var c_ = 'd';
            foreach (var c in _input)
            {
                c_ = c;
                if (Convert.ToInt32(c) > 127 || c == '%') break;
            }
            if (Convert.ToInt32(c_) <= 127 && c_ != '%') return _input;

            var input = Uri.UnescapeDataString(_input);
        retry:
            foreach (char c in input)
            {
                if (Convert.ToInt32(c) > 255)
                {
                    // Unicodeの場合(1charが複数のバイトで構成されている）
                    // Uriクラスをnewして再構成し、入力をPathAndQueryのみとしてやり直す
                    foreach (var b in Encoding.UTF8.GetBytes(c.ToString()))
                    {
                        sb.AppendFormat("%{0:X2}", b);
                    }
                }
                else if (Convert.ToInt32(c) > 127 || c == '%')
                {
                    // UTF-8の場合
                    // Uriクラスをnewして再構成し、入力をinputからAuthority部分を除去してやり直す
                    if (uri == null)
                    {
                        uri = new Uri(input);
                        input = input.Remove(0, uri.GetLeftPart(UriPartial.Authority).Length);
                        sb.Length = 0;
                        goto retry;
                    }
                    else
                    {
                        sb.Append("%" + Convert.ToInt16(c).ToString("X2").ToUpper());
                    }
                }
                else
                {
                    sb.Append(c);
                }
            }

            if (uri == null)
            {
                result = sb.ToString();
            }
            else
            {
                result = uri.GetLeftPart(UriPartial.Authority) + sb.ToString();
            }

            return result;
        }

        /// <summary>
        /// URLのドメイン名をPunycode展開します。
        /// <para>
        /// ドメイン名がIDNでない場合はそのまま返します。
        /// ドメインラベルの区切り文字はFULLSTOP(.、U002E)に置き換えられます。
        /// </para>
        /// </summary>
        /// <param name="input">展開対象のURL</param>
        /// <returns>IDNが含まれていた場合はPunycodeに展開したURLをを返します。Punycode展開時にエラーが発生した場合はnullを返します。</returns>
        public static string IDNEncode(string inputUrl)
        {
            try
            {
                var uriBuilder = new UriBuilder(inputUrl);

                var idnConverter = new IdnMapping();
                uriBuilder.Host = idnConverter.GetAscii(uriBuilder.Host);

                return uriBuilder.Uri.ToString();
            }
            catch (Exception)
            {
                return null;
            }
        }

        public static string IDNDecode(string inputUrl)
        {
            try
            {
                var uriBuilder = new UriBuilder(inputUrl);

                if (uriBuilder.Host != null)
                {
                    var idnConverter = new IdnMapping();
                    uriBuilder.Host = idnConverter.GetUnicode(uriBuilder.Host);
                }

                return uriBuilder.Uri.ToString();
            }
            catch (Exception)
            {
                return null;
            }
        }

        /// <summary>
        /// URL を画面上で人間に読みやすい文字列に変換する（エスケープ解除など）
        /// </summary>
        public static string ConvertToReadableUrl(string inputUrl)
        {
            try
            {
                var outputUrl = inputUrl;

                // Punycodeをデコードする
                outputUrl = MyCommon.IDNDecode(outputUrl);
                if (outputUrl == null)
                    return inputUrl;

                // URL内で特殊な意味を持つ記号は元の文字に変換されることを避けるために二重エスケープする
                // 参考: Firefoxの losslessDecodeURI() 関数
                //   http://hg.mozilla.org/mozilla-central/annotate/FIREFOX_AURORA_27_BASE/browser/base/content/browser.js#l2128
                outputUrl = Regex.Replace(outputUrl, @"%(2[3456BCF]|3[ABDF]|40)", @"%25$1", RegexOptions.IgnoreCase);

                // エスケープを解除する
                outputUrl = Uri.UnescapeDataString(outputUrl);

                return outputUrl;
            }
            catch (UriFormatException)
            {
                return inputUrl;
            }
        }

        public static void MoveArrayItem(int[] values, int idx_fr, int idx_to)
        {
            var moved_value = values[idx_fr];
            var num_moved = Math.Abs(idx_fr - idx_to);

            if (idx_to < idx_fr)
            {
                Array.Copy(values, idx_to, values,
                    idx_to + 1, num_moved);
            }
            else
            {
                Array.Copy(values, idx_fr + 1, values,
                    idx_fr, num_moved);
            }

            values[idx_to] = moved_value;
        }

        public static string EncryptString(string str)
        {
            if (string.IsNullOrEmpty(str)) return "";

            //文字列をバイト型配列にする
            var bytesIn = Encoding.UTF8.GetBytes(str);

            //DESCryptoServiceProviderオブジェクトの作成
            using (var des = new DESCryptoServiceProvider())
            {
                //共有キーと初期化ベクタを決定
                //パスワードをバイト配列にする
                var bytesKey = Encoding.UTF8.GetBytes("_tween_encrypt_key_");
                //共有キーと初期化ベクタを設定
                des.Key = ResizeBytesArray(bytesKey, des.Key.Length);
                des.IV = ResizeBytesArray(bytesKey, des.IV.Length);

                MemoryStream msOut = null;
                ICryptoTransform desdecrypt = null;

                try
                {
                    //暗号化されたデータを書き出すためのMemoryStream
                    msOut = new MemoryStream();

                    //DES暗号化オブジェクトの作成
                    desdecrypt = des.CreateEncryptor();

                    //書き込むためのCryptoStreamの作成
                    using (CryptoStream cryptStream = new CryptoStream(msOut, desdecrypt, CryptoStreamMode.Write))
                    {
                        //Disposeが重複して呼ばれないようにする
                        MemoryStream msTmp = msOut;
                        msOut = null;
                        desdecrypt = null;

                        //書き込む
                        cryptStream.Write(bytesIn, 0, bytesIn.Length);
                        cryptStream.FlushFinalBlock();
                        //暗号化されたデータを取得
                        var bytesOut = msTmp.ToArray();

                        //Base64で文字列に変更して結果を返す
                        return Convert.ToBase64String(bytesOut);
                    }
                }
                finally
                {
                    if (msOut != null) msOut.Dispose();
                    if (desdecrypt != null) desdecrypt.Dispose();
                }
            }
        }

        public static string DecryptString(string str)
        {
            if (string.IsNullOrEmpty(str)) return "";

            //DESCryptoServiceProviderオブジェクトの作成
            using (var des = new System.Security.Cryptography.DESCryptoServiceProvider())
            {
                //共有キーと初期化ベクタを決定
                //パスワードをバイト配列にする
                var bytesKey = Encoding.UTF8.GetBytes("_tween_encrypt_key_");
                //共有キーと初期化ベクタを設定
                des.Key = ResizeBytesArray(bytesKey, des.Key.Length);
                des.IV = ResizeBytesArray(bytesKey, des.IV.Length);

                //Base64で文字列をバイト配列に戻す
                var bytesIn = Convert.FromBase64String(str);

                MemoryStream msIn = null;
                ICryptoTransform desdecrypt = null;
                CryptoStream cryptStreem = null;

                try
                {
                    //暗号化されたデータを読み込むためのMemoryStream
                    msIn = new MemoryStream(bytesIn);
                    //DES復号化オブジェクトの作成
                    desdecrypt = des.CreateDecryptor();
                    //読み込むためのCryptoStreamの作成
                    cryptStreem = new CryptoStream(msIn, desdecrypt, CryptoStreamMode.Read);

                    //Disposeが重複して呼ばれないようにする
                    msIn = null;
                    desdecrypt = null;

                    //復号化されたデータを取得するためのStreamReader
                    using (StreamReader srOut = new StreamReader(cryptStreem, Encoding.UTF8))
                    {
                        //Disposeが重複して呼ばれないようにする
                        cryptStreem = null;

                        //復号化されたデータを取得する
                        var result = srOut.ReadToEnd();

                        return result;
                    }
                }
                finally
                {
                    if (msIn != null) msIn.Dispose();
                    if (desdecrypt != null) desdecrypt.Dispose();
                    if (cryptStreem != null) cryptStreem.Dispose();
                }
            }
        }

        public static byte[] ResizeBytesArray(byte[] bytes,
                                    int newSize)
        {
            var newBytes = new byte[newSize];
            if (bytes.Length <= newSize)
            {
                foreach (var i in Enumerable.Range(0, bytes.Length))
                {
                    newBytes[i] = bytes[i];
                }
            }
            else
            {
                var pos = 0;
                foreach (var i in Enumerable.Range(0, bytes.Length))
                {
                    newBytes[pos] = unchecked((byte)(newBytes[pos] ^ bytes[i]));
                    pos++;
                    if (pos >= newBytes.Length)
                    {
                        pos = 0;
                    }
                }
            }
            return newBytes;
        }

        public static bool IsNT6()
        {
            //NT6 kernelかどうか検査
            return Environment.OSVersion.Platform == PlatformID.Win32NT && Environment.OSVersion.Version.Major == 6;
        }

        [FlagsAttribute()]
        public enum TabUsageType
        {
            Undefined = 0,
            Home = 1,      //Unique
            Mentions = 2,     //Unique
            DirectMessage = 4,   //Unique
            Favorites = 8,       //Unique
            UserDefined = 16,
            LocalQuery = 32,      //Pin(no save/no save query/distribute/no update(normal update))
            Profile = 64,         //Pin(save/no distribute/manual update)
            PublicSearch = 128,    //Pin(save/no distribute/auto update)
            Lists = 256,
            Related = 512,
            UserTimeline = 1024,
            //RTMyTweet
            //RTByOthers
            //RTByMe
        }

        public static string fileVersion = "";

        public static string GetUserAgentString(bool fakeMSIE = false)
        {
            if (string.IsNullOrEmpty(fileVersion))
            {
                throw new Exception("fileversion is not Initialized.");
            }

            if (fakeMSIE)
                return GetAssemblyName() + "/" + fileVersion + " (compatible; MSIE 10.0)";
            else
                return GetAssemblyName() + "/" + fileVersion;
        }

        public static TwitterApiStatus TwitterApiInfo = new TwitterApiStatus();

        public static bool IsAnimatedGif(string filename)
        {
            Image img = null;
            try
            {
                img = Image.FromFile(filename);
                if (img == null) return false;
                if (img.RawFormat.Guid == ImageFormat.Gif.Guid)
                {
                    var fd = new FrameDimension(img.FrameDimensionsList[0]);
                    var fd_count = img.GetFrameCount(fd);
                    if (fd_count > 1)
                    {
                        return true;
                    }
                    else
                    {
                        return false;
                    }
                }
                return false;
            }
            catch (Exception)
            {
                return false;
            }
            finally
            {
                if (img != null) img.Dispose();
            }
        }

        public static DateTime DateTimeParse(string input)
        {
            DateTime rslt;
            string[] format = {
                "ddd MMM dd HH:mm:ss zzzz yyyy",
                "ddd, d MMM yyyy HH:mm:ss zzzz",
            };
            foreach (var fmt in format)
            {
                if (DateTime.TryParseExact(input,
                                          fmt,
                                          DateTimeFormatInfo.InvariantInfo,
                                          DateTimeStyles.None,
                                          out rslt))
                {
                    return rslt;
                }
                else
                {
                    continue;
                }
            }
            TraceOut("Parse Error(DateTimeFormat) : " + input);
            return new DateTime();
        }

        public static T CreateDataFromJson<T>(string content)
        {
            T data;
            var buf = Encoding.Unicode.GetBytes(content);
            using (var stream = new MemoryStream(buf))
            {
                data = (T)((new DataContractJsonSerializer(typeof(T))).ReadObject(stream));
            }
            return data;
        }

        public static bool IsNetworkAvailable()
        {
            try
            {
                return NetworkInterface.GetIsNetworkAvailable();
            }
            catch(Exception)
            {
                return false;
            }
        }

        public static bool IsValidEmail(string strIn)
        {
            // Return true if strIn is in valid e-mail format.
            return Regex.IsMatch(strIn,
                   @"^(?("")("".+?""@)|(([0-9a-zA-Z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9a-zA-Z])@))" +
                   @"(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,6}))$");
        }

        /// <summary>
        /// 指定された修飾キーが押されている状態かを取得します。
        /// </summary>
        /// <param name="keys">状態を調べるキー</param>
        /// <returns><paramref name="keys"/> で指定された修飾キーがすべて押されている状態であれば true。それ以外であれば false。</returns>
        public static bool IsKeyDown(params Keys[] keys)
        {
            return MyCommon._IsKeyDown(Control.ModifierKeys, keys);
        }

        internal static bool _IsKeyDown(Keys modifierKeys, Keys[] targetKeys)
        {
            foreach (Keys key in targetKeys)
            {
                if ((modifierKeys & key) != key)
                {
                    return false;
                }
            }
            return true;
        }

        /// <summary>
        /// アプリケーションのアセンブリ名を取得します。
        /// </summary>
        /// <remarks>
        /// VB.NETの<code>My.Application.Info.AssemblyName</code>と（ほぼ）同じ動作をします。
        /// </remarks>
        /// <returns>アプリケーションのアセンブリ名</returns>
        public static string GetAssemblyName()
        {
            return MyCommon.EntryAssembly.GetName().Name;
        }

        internal static _Assembly EntryAssembly = Assembly.GetEntryAssembly();

        /// <summary>
        /// 文字列中に含まれる %AppName% をアプリケーション名に置換する
        /// </summary>
        /// <param name="orig">対象となる文字列</param>
        /// <returns>置換後の文字列</returns>
        public static string ReplaceAppName(string orig)
        {
            return MyCommon.ReplaceAppName(orig, Application.ProductName);
        }

        /// <summary>
        /// 文字列中に含まれる %AppName% をアプリケーション名に置換する
        /// </summary>
        /// <param name="orig">対象となる文字列</param>
        /// <param name="appname">アプリケーション名</param>
        /// <returns>置換後の文字列</returns>
        public static string ReplaceAppName(string orig, string appname)
        {
            return orig.Replace("%AppName%", appname);
        }

        /// <summary>
        /// 表示用のバージョン番号の文字列を生成する
        /// </summary>
        /// <remarks>
        /// バージョン1.0.0.1のように末尾が0でない（＝開発版）の場合は「1.0.1-beta1」が出力される
        /// </remarks>
        /// <returns>
        /// 生成されたバージョン番号の文字列
        /// </returns>
        public static string GetReadableVersion(string fileVersion = null)
        {
            if (fileVersion == null)
            {
                fileVersion = MyCommon.fileVersion;
            }

            if (string.IsNullOrEmpty(fileVersion))
            {
                return null;
            }

            int[] version = fileVersion.Split('.')
                .Select(x => int.Parse(x)).ToArray();

            if (version[3] == 0)
            {
                return string.Format("{0}.{1}.{2}", version[0], version[1], version[2]);
            }
            else
            {
                version[2] = version[2] + 1;

                // 10を越えたら桁上げ
                if (version[2] >= 10)
                {
                    version[1] += version[2] / 10;
                    version[2] %= 10;

                    if (version[1] >= 10)
                    {
                        version[0] += version[1] / 10;
                        version[1] %= 10;
                    }
                }

                return string.Format("{0}.{1}.{2}-beta{3}", version[0], version[1], version[2], version[3]);
            }
        }

        public const string TwitterUrl = "https://twitter.com/";

        public static string GetStatusUrl(PostClass post)
        {
            if (post.RetweetedId == null)
                return GetStatusUrl(post.ScreenName, post.StatusId);
            else
                return GetStatusUrl(post.ScreenName, post.RetweetedId.Value);
        }

        public static string GetStatusUrl(string screenName, long statusId)
        {
            return TwitterUrl + screenName + "/status/" + statusId.ToString();
        }
    }
}
