using System;
using System.Collections.Generic;
using System.Linq;
using System.Diagnostics;
using System.Text;
using System.Threading.Tasks;
using Wox.Plugin;
using System.IO;
using System.ComponentModel;
using Wox.Infrastructure.Storage;
using Microsoft.Plugin.Indexer.SearchHelper;
using Microsoft.Search.Interop;
using Microsoft.PowerToys.Settings.UI.Lib;
using System.Windows.Controls;
using Wox.Infrastructure.Logger;
using System.Text.RegularExpressions;

namespace Microsoft.Plugin.Indexer
{
    class Main : ISettingProvider, IPlugin, ISavable, IPluginI18n, IContextMenu
    {

        // This variable contains metadata about the Plugin
        private PluginInitContext _context;

        // This variable contains information about the context menus
        private Settings _settings;

        // Contains information about the plugin stored in json format
        private PluginJsonStorage<Settings> _storage;

        // To access Windows Search functionalities
        private readonly WindowsSearchAPI _api = new WindowsSearchAPI(new OleDBSearch());

        // Reserved keywords in oleDB
        private string ReservedStringPattern = @"^[\/\\\$\%]+$";

        private IContextMenu _contextMenuLoader;

        // To save the configurations of plugins
        public void Save()
        {
            _storage.Save();
        }

        // This function uses the Windows indexer and returns the list of results obtained
        public List<Result> Query(Query query)
        {
            var results = new List<Result>();
            if (!string.IsNullOrEmpty(query.Search))
            {
                var searchQuery = query.Search;
                if (_settings.MaxSearchCount <= 0)
                {
                    _settings.MaxSearchCount = 50;
                }

                var regexMatch = Regex.Match(searchQuery, ReservedStringPattern);

                if (!regexMatch.Success)
                {
                    try
                    {
                        var searchResultsList = _api.Search(searchQuery, maxCount: _settings.MaxSearchCount).ToList();
                        foreach (var searchResult in searchResultsList)
                        {
                            var path = searchResult.Path;
                            var toolTipTitle = string.Format("{0} : {1}", _context.API.GetTranslation("Microsoft_plugin_indexer_name"), searchResult.Title);
                            var toolTipText = string.Format("{0} : {1}", _context.API.GetTranslation("Microsoft_plugin_indexer_path"), path);
                            string workingDir = null;
                            if (_settings.UseLocationAsWorkingDir)
                                workingDir = Path.GetDirectoryName(path);

                            Result r = new Result();
                            r.Title = searchResult.Title;
                            r.SubTitle = "Search: " + path;
                            r.IcoPath = path;
                            r.ToolTipData = new ToolTipData(toolTipTitle, toolTipText);
                            r.Action = c =>
                            {
                                bool hide;
                                try
                                {
                                    Process.Start(new ProcessStartInfo
                                    {
                                        FileName = path,
                                        UseShellExecute = true,
                                        WorkingDirectory = workingDir
                                    });
                                    hide = true;
                                }
                                catch (Win32Exception)
                                {
                                    var name = $"Plugin: {_context.CurrentPluginMetadata.Name}";
                                    var msg = "Can't Open this file";
                                    _context.API.ShowMsg(name, msg, string.Empty);
                                    hide = false;
                                }
                                return hide;
                            };
                            r.ContextData = searchResult;

                            //If the result is a directory, then it's display should show a directory.
                            if (Directory.Exists(path))
                            {
                                r.QueryTextDisplay = path;
                            }

                            results.Add(r);
                        }
                    }
                    catch (InvalidOperationException)
                    {
                        //The connection has closed, internal error of ExecuteReader()
                        //Not showing this exception to the users
                    }
                    catch (Exception ex)
                    {
                        Log.Info(ex.ToString());
                    }
                }               
            }

            return results;
        }

        public void Init(PluginInitContext context)
        {
            // initialize the context of the plugin
            _context = context;
            _contextMenuLoader = new ContextMenuLoader(context);
            _storage = new PluginJsonStorage<Settings>();
            _settings = _storage.Load();
        }

        // TODO: Localize the strings
        // Set the Plugin Title
        public string GetTranslatedPluginTitle()
        {
            return "Windows Indexer Plugin";
        }

        // TODO: Localize the string
        // Set the plugin Description
        public string GetTranslatedPluginDescription()
        {
            return "Returns files and folders";
        }

        public List<ContextMenuResult> LoadContextMenus(Result selectedResult)
        {
            return _contextMenuLoader.LoadContextMenus(selectedResult);
        }
        public void UpdateSettings(PowerLauncherSettings settings)
        {
            _settings.MaxSearchCount = settings.properties.maximum_number_of_results;
        }
        public Control CreateSettingPanel()
        {
            throw new NotImplementedException();
        }

    }
}