// 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      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.Reflection;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
using System.ComponentModel;
using System.Collections;
using System.Globalization;

namespace OpenTween
{
    public class GrowlHelper
    {
        private Assembly _connector = null;
        private Assembly _core = null;

        private object _growlNTreply;
        private object _growlNTdm;
        private object _growlNTnew;
        private object _growlNTusevent;
        private object _growlApp;

        private object _targetConnector;

        private string _appName = "";
        bool _initialized = false;

        public class NotifyCallbackEventArgs : EventArgs
        {
            public long StatusId { get; set; }
            public NotifyType NotifyType { get; set; }
            public NotifyCallbackEventArgs(NotifyType notifyType, string statusId)
            {
                if (statusId.Length > 1)
                {
                    this.StatusId = long.Parse(statusId);
                    this.NotifyType = notifyType;
                }
            }
        }

        public event EventHandler<NotifyCallbackEventArgs> NotifyClicked;

        public string AppName
        {
            get { return _appName; }
        }

        public enum NotifyType
        {
            Reply = 0,
            DirectMessage = 1,
            Notify = 2,
            UserStreamEvent = 3,
        }

        public GrowlHelper(string appName)
        {
            _appName = appName;
        }

        public bool IsAvailable
        {
            get
            {
                if (_connector == null || _core == null || !_initialized)
                    return false;
                else
                    return true;
            }
        }

        private byte[] IconToByteArray(string filename)
        {
            using (Icon ic = new Icon(filename))
            {
                return IconToByteArray(ic);
            }
        }

        private byte[] IconToByteArray(Icon icondata)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                using (Icon ic = new Icon(icondata, 48, 48))
                {
                    ic.ToBitmap().Save(ms, ImageFormat.Png);
                    return ms.ToArray();
                }
            }
        }

        public static bool IsDllExists
        {
            get
            {
                string dir = Application.StartupPath;
                string connectorPath = Path.Combine(dir, "Growl.Connector.dll");
                string corePath = Path.Combine(dir, "Growl.CoreLibrary.dll");
                if (File.Exists(connectorPath) && File.Exists(corePath))
                    return true;
                else
                    return false;
            }
        }

        public bool RegisterGrowl()
        {
            _initialized = false;
            string dir = Application.StartupPath;
            string connectorPath = Path.Combine(dir, "Growl.Connector.dll");
            string corePath = Path.Combine(dir, "Growl.CoreLibrary.dll");

            try
            {
                if (!IsDllExists) return false;
                _connector = Assembly.LoadFile(connectorPath);
                _core = Assembly.LoadFile(corePath);
            }
            catch (Exception)
            {
                return false;
            }

            try
            {
                _targetConnector = _connector.CreateInstance("Growl.Connector.GrowlConnector");
                Type _t = _connector.GetType("Growl.Connector.NotificationType");

                _growlNTreply = _t.InvokeMember(null,
                    BindingFlags.CreateInstance, null, null, new object[] { "REPLY", "Reply" }, CultureInfo.InvariantCulture);

                _growlNTdm = _t.InvokeMember(null,
                    BindingFlags.CreateInstance, null, null, new object[] { "DIRECT_MESSAGE", "DirectMessage" }, CultureInfo.InvariantCulture);

                _growlNTnew = _t.InvokeMember(null,
                    BindingFlags.CreateInstance, null, null, new object[] { "NOTIFY", "新着通知" }, CultureInfo.InvariantCulture);

                _growlNTusevent = _t.InvokeMember(null,
                    BindingFlags.CreateInstance, null, null, new object[] { "USERSTREAM_EVENT", "UserStream Event" }, CultureInfo.InvariantCulture);

                object encryptType =
                        _connector.GetType("Growl.Connector.Cryptography+SymmetricAlgorithmType").InvokeMember(
                            "PlainText", BindingFlags.GetField, null, null, null, CultureInfo.InvariantCulture);
                _targetConnector.GetType().InvokeMember("EncryptionAlgorithm", BindingFlags.SetProperty, null, _targetConnector, new object[] { encryptType }, CultureInfo.InvariantCulture);

                _growlApp = _connector.CreateInstance(
                    "Growl.Connector.Application", false, BindingFlags.Default, null, new object[] { _appName }, null, null);


                if (File.Exists(Path.Combine(Application.StartupPath, "Icons\\Tween.png")))
                {
                    // Icons\Tween.pngを使用
                    ConstructorInfo ci = _core.GetType(
                        "Growl.CoreLibrary.Resource").GetConstructor(
                        BindingFlags.NonPublic | BindingFlags.Instance,
                        null, new Type[] { typeof(string) }, null);

                    object data = ci.Invoke(new object[] { Path.Combine(Application.StartupPath, "Icons\\Tween.png") });
                    PropertyInfo pi = _growlApp.GetType().GetProperty("Icon");
                    pi.SetValue(_growlApp, data, null);

                }
                else if (File.Exists(Path.Combine(Application.StartupPath, "Icons\\MIcon.ico")))
                {
                    // アイコンセットにMIcon.icoが存在する場合それを使用
                    ConstructorInfo cibd = _core.GetType(
                        "Growl.CoreLibrary.BinaryData").GetConstructor(
                        BindingFlags.Public | BindingFlags.Instance,
                        null, new Type[] { typeof(byte[]) }, null);
                    object bdata = cibd.Invoke(
                        new object[] { IconToByteArray(Path.Combine(Application.StartupPath, "Icons\\MIcon.ico")) });

                    ConstructorInfo ciRes = _core.GetType(
                        "Growl.CoreLibrary.Resource").GetConstructor(
                        BindingFlags.NonPublic | BindingFlags.Instance,
                        null, new Type[] { bdata.GetType() }, null);

                    object data = ciRes.Invoke(new object[] { bdata });
                    PropertyInfo pi = _growlApp.GetType().GetProperty("Icon");
                    pi.SetValue(_growlApp, data, null);
                }
                else
                {
                    //内蔵アイコンリソースを使用
                    ConstructorInfo cibd = _core.GetType(
                        "Growl.CoreLibrary.BinaryData").GetConstructor(
                        BindingFlags.Public | BindingFlags.Instance,
                        null, new Type[] { typeof(byte[]) }, null);
                    object bdata = cibd.Invoke(
                        new object[] { IconToByteArray(Properties.Resources.MIcon) });

                    ConstructorInfo ciRes = _core.GetType(
                        "Growl.CoreLibrary.Resource").GetConstructor(
                        BindingFlags.NonPublic | BindingFlags.Instance,
                        null, new Type[] { bdata.GetType() }, null);

                    object data = ciRes.Invoke(new object[] { bdata });
                    PropertyInfo pi = _growlApp.GetType().GetProperty("Icon");
                    pi.SetValue(_growlApp, data, null);
                }

                MethodInfo mi = _targetConnector.GetType().GetMethod("Register", new Type[] { _growlApp.GetType(), _connector.GetType("Growl.Connector.NotificationType[]") });

                _t = _connector.GetType("Growl.Connector.NotificationType");

                var arglist = new ArrayList
                {
                    _growlNTreply,
                    _growlNTdm,
                    _growlNTnew,
                    _growlNTusevent,
                };

                mi.Invoke(_targetConnector, new object[] { _growlApp, arglist.ToArray(_t) });

                // コールバックメソッドの登録
                Type tGrowlConnector = _connector.GetType("Growl.Connector.GrowlConnector");
                EventInfo evNotificationCallback = tGrowlConnector.GetEvent("NotificationCallback");
                Type tDelegate = evNotificationCallback.EventHandlerType;
                MethodInfo miHandler = typeof(GrowlHelper).GetMethod("GrowlCallbackHandler", BindingFlags.NonPublic | BindingFlags.Instance);
                Delegate d = Delegate.CreateDelegate(tDelegate, this, miHandler);
                MethodInfo miAddHandler = evNotificationCallback.GetAddMethod();
                object[] addHandlerArgs = { d };
                miAddHandler.Invoke(_targetConnector, addHandlerArgs);

                _initialized = true;
            }
            catch (Exception)
            {
                _initialized = false;
                return false;
            }

            return true;
        }

        public void Notify(NotifyType notificationType, string id, string title, string text, Image icon = null, string url = "")
        {
            if (!_initialized) return;
            string notificationName = "";
            switch (notificationType)
            {
                case NotifyType.Reply:
                    notificationName = "REPLY";
                    break;
                case NotifyType.DirectMessage:
                    notificationName = "DIRECT_MESSAGE";
                    break;
                case NotifyType.Notify:
                    notificationName = "NOTIFY";
                    break;
                case NotifyType.UserStreamEvent:
                    notificationName = "USERSTREAM_EVENT";
                    break;
            }
            object n = null;
            if (icon != null || !string.IsNullOrEmpty(url))
            {
                Type gCore = _core.GetType("Growl.CoreLibrary.Resource");
                object res = null;
                if (icon != null)
                {
                    res = gCore.InvokeMember("op_Implicit",
                                             BindingFlags.Public | BindingFlags.Static | BindingFlags.InvokeMethod,
                                             null,
                                             null,
                                             new object[] { icon },
                                             CultureInfo.InvariantCulture);
                }
                else
                {
                    res = gCore.InvokeMember("op_Implicit",
                                             BindingFlags.Public | BindingFlags.Static | BindingFlags.InvokeMethod,
                                             null,
                                             null,
                                             new object[] { url },
                                             CultureInfo.InvariantCulture);
                }
                object priority =
                        _connector.GetType("Growl.Connector.Priority").InvokeMember(
                            "Normal", BindingFlags.GetField, null, null, null, CultureInfo.InvariantCulture);
                n = _connector.GetType("Growl.Connector.Notification").InvokeMember(
                        "Notification",
                        BindingFlags.CreateInstance,
                        null,
                        _connector,
                        new object[] {_appName,
                                      notificationName,
                                      id,
                                      title,
                                      text,
                                      res,
                                      false,
                                      priority,
                                      "aaa"},
                        CultureInfo.InvariantCulture);
            }
            else
            {
                n = _connector.GetType("Growl.Connector.Notification").InvokeMember(
                        "Notification",
                        BindingFlags.CreateInstance,
                        null,
                        _connector,
                        new object[] {_appName,
                                      notificationName,
                                      id,
                                      title,
                                      text},
                        CultureInfo.InvariantCulture);
            }
            //_targetConnector.GetType.InvokeMember("Notify", BindingFlags.InvokeMethod, null, _targetConnector, new object[] {n});
            object cc = _connector.GetType("Growl.Connector.CallbackContext").InvokeMember(
                null, BindingFlags.CreateInstance, null, _connector,
                new object[] { "some fake information", notificationName },
                CultureInfo.InvariantCulture);
            _targetConnector.GetType().InvokeMember("Notify", BindingFlags.InvokeMethod, null, _targetConnector, new object[] { n, cc }, CultureInfo.InvariantCulture);
        }

        private void GrowlCallbackHandler(object response, object callbackData, object state)
        {
            try
            {
                // 定数取得
                object vCLICK =
                _core.GetType("Growl.CoreLibrary.CallbackResult").GetField(
                            "CLICK",
                           BindingFlags.Public | BindingFlags.Static).GetRawConstantValue();
                // 実際の値
                object vResult = callbackData.GetType().GetProperty(
                            "Result",
                            BindingFlags.Public | BindingFlags.Instance).GetGetMethod().Invoke(callbackData, null);
                vResult = (int)vResult;
                string notifyId = (string)callbackData.GetType().GetProperty("NotificationID").GetGetMethod().Invoke(callbackData, null);
                string notifyName = (string)callbackData.GetType().GetProperty("Type").GetGetMethod().Invoke(callbackData, null);
                if (vCLICK.Equals(vResult))
                {
                    NotifyType nt;
                    switch (notifyName)
                    {
                        case "REPLY":
                            nt = NotifyType.Reply;
                            break;
                        case "DIRECT_MESSAGE":
                            nt = NotifyType.DirectMessage;
                            break;
                        case "NOTIFY":
                            nt = NotifyType.Notify;
                            break;
                        case "USERSTREAM_EVENT":
                            nt = NotifyType.UserStreamEvent;
                            break;
                        default:
                            return;
                    }

                    NotifyClicked?.Invoke(this, new NotifyCallbackEventArgs(nt, notifyId));
                }
            }
            catch (Exception)
            {
                return;
            }
        }
    }
}