using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using Microsoft.CSharp;
using Wox.Helper;
using Wox.Infrastructure;
using Wox.Infrastructure.Storage;
using Wox.Infrastructure.Storage.UserSettings;
using Wox.Plugin;

namespace Wox.PluginLoader
{
    public static class Plugins
    {
        private static string debuggerMode = null;
        private static List<PluginPair> plugins = new List<PluginPair>();
        private static ManualResetEvent initializing = null;

        public static void Init()
        {
            if (initializing != null) return;

            initializing = new ManualResetEvent(false);
            plugins.Clear();
            BasePluginLoader.ParsePluginsConfig();

            if (UserSettingStorage.Instance.EnablePythonPlugins)
            {
                plugins.AddRange(new PythonPluginLoader().LoadPlugin());    
            }

            plugins.AddRange(new CSharpPluginLoader().LoadPlugin());
            Forker forker = new Forker();
            foreach (IPlugin plugin in plugins.Select(pluginPair => pluginPair.Plugin))
            {
                IPlugin plugin1 = plugin;
                PluginPair pluginPair = plugins.FirstOrDefault(o => o.Plugin == plugin1);
                if (pluginPair != null)
                {
                    PluginMetadata metadata = pluginPair.Metadata;
                    pluginPair.InitContext = new PluginInitContext()
                    {
                        Plugins = plugins,
                        CurrentPluginMetadata = metadata,
                        ChangeQuery = s => App.Window.Dispatcher.Invoke(new Action(() => App.Window.ChangeQuery(s))),
                        CloseApp = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.CloseApp())),
                        HideApp = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.HideApp())),
                        ShowApp = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.ShowApp())),
                        ShowMsg = (title, subTitle, iconPath) => App.Window.Dispatcher.Invoke(new Action(() =>
                            App.Window.ShowMsg(title, subTitle, iconPath))),
                        OpenSettingDialog = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.OpenSettingDialog())),
                        ShowCurrentResultItemTooltip = (msg) => App.Window.Dispatcher.Invoke(new Action(() => App.Window.ShowCurrentResultItemTooltip(msg))),
                        ReloadPlugins = () => App.Window.Dispatcher.Invoke(new Action(() => Init())),
                        InstallPlugin = (filePath) => App.Window.Dispatcher.Invoke(new Action(() =>
                        {
                            PluginInstaller.Install(filePath);
                        })),
                        StartLoadingBar = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.StartLoadingBar())),
                        StopLoadingBar = () => App.Window.Dispatcher.Invoke(new Action(() => App.Window.StopLoadingBar())),
                        ShellRun = (cmd) => (bool) App.Window.Dispatcher.Invoke(new Func<bool>(() => App.Window.ShellRun(cmd))),
                    };
                    forker.Fork(() => plugin1.Init(pluginPair.InitContext));
                }
            }

            ThreadPool.QueueUserWorkItem(o =>
            {
                forker.Join();
                initializing.Set();
                initializing = null;
            });
        }

        public static List<PluginPair> AllPlugins
        {
            get
            {
                var init = initializing;
                if (init != null)
                {
                    init.WaitOne();
                }
                return plugins;
            }
        }

        public static bool HitThirdpartyKeyword(Query query)
        {
            if (string.IsNullOrEmpty(query.ActionName)) return false;

            return plugins.Any(o => o.Metadata.PluginType == PluginType.ThirdParty && o.Metadata.ActionKeyword == query.ActionName);
        }

        public static void ActivatePluginDebugger(string path)
        {
            debuggerMode = path;    
        }

        public static String DebuggerMode
        {
            get { return debuggerMode; }
        }
    }
}