using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using WechatBakTool.Export;
using WechatBakTool.Model;
using WechatBakTool.ViewModel;

namespace WechatBakTool.Pages
{
    /// <summary>
    /// Workspace.xaml 的交互逻辑
    /// </summary>
    public partial class Workspace : Page
    {
        public WXUserReader? UserReader;
        private WorkspaceViewModel ViewModel = new WorkspaceViewModel();
        public Workspace()
        {
            ViewModel.ExportItems = new System.Collections.ObjectModel.ObservableCollection<ExportItem> {
                new ExportItem(){ Name="导出为HTML",Value=1 },
                new ExportItem(){ Name="导出为TXT",Value=2 },
            };
            ViewModel.SelectExportItem = ViewModel.ExportItems[0];
            InitializeComponent();

            list_users.Items.Clear();

            DataContext = ViewModel;
            UserBakConfig? config = Main2.CurrentUserBakConfig;
            if (config != null)
            {
                UserReader = new WXUserReader(config);
                if (config.Decrypt)
                {
                    ViewModel.Contacts = UserReader.GetWXContacts();
                }
            }
        }

        private void btn_read_Click(object sender, RoutedEventArgs e)
        {
            if (Main2.CurrentUserBakConfig == null)
            {
                MessageBox.Show("工作区配置加载失败，请检查配置文件是否正常","错误");
                return;
            }
        }

        private void list_users_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ViewModel.ExportCount = "";
            ViewModel.WXContact = list_users.SelectedItem as WXContact;
            if(ViewModel.WXContact == null || UserReader == null)
            {
                return;
            }
            List<WXMsg>? msgs = UserReader.GetWXMsgs(ViewModel.WXContact.UserName);
            list_msg.ItemsSource = msgs;
        }

        private void txt_find_user_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (UserReader == null)
                return;

            string findName = txt_find_user.Text;
            if (txt_find_user.Text == "搜索...")
                findName = "";

            ViewModel.Contacts = UserReader.GetWXContacts(findName);
        }

        private void txt_find_user_GotFocus(object sender, RoutedEventArgs e)
        {
            if (txt_find_user.Text == "搜索...")
                txt_find_user.Text = "";

            Debug.WriteLine(ViewModel.SearchString);
        }

        private void btn_export_Click(object sender, RoutedEventArgs e)
        {
            if(ViewModel.WXContact == null || UserReader == null)
            {
                MessageBox.Show("请选择联系人", "错误");
                return;
            }
            string path = Path.Combine(Main2.CurrentUserBakConfig!.UserWorkspacePath, ViewModel.WXContact.UserName + ".txt");
            IExport export = new TXTExport();
            export.InitTemplate(ViewModel.WXContact, path);
            export.SetMsg(UserReader, ViewModel.WXContact, ViewModel);
            export.SetEnd();
            export.Save(path);
            MessageBox.Show("导出完成");
        }

        private void btn_open_workspace_Click(object sender, RoutedEventArgs e)
        {
            Process.Start("explorer.exe ", Main2.CurrentUserBakConfig!.UserWorkspacePath);
        }

        private void Export_Click(object sender, RoutedEventArgs e)
        {
            Task.Run(() =>
            {
                if (ViewModel.WXContact == null || UserReader == null)
                {
                    MessageBox.Show("请选择联系人", "错误");
                    return;
                }
                if (ViewModel.SelectExportItem == null)
                {
                    MessageBox.Show("请选择导出方式", "错误");
                    return;
                }
                string path = Path.Combine(Main2.CurrentUserBakConfig!.UserWorkspacePath, ViewModel.WXContact.UserName);
                IExport export;

#if DEBUG
                Stopwatch stopwatch = new Stopwatch();
                stopwatch.Start();
#endif
                if (ViewModel.SelectExportItem.Value == 2)
                {
                    path += ".txt";
                    export = new TXTExport();
                }
                else
                {
                    path += ".html";
                    export = new HtmlExport();
                }
                export.InitTemplate(ViewModel.WXContact, path);
                export.SetMsg(UserReader, ViewModel.WXContact, ViewModel);
                export.SetEnd();
                export.Save(path);
#if DEBUG
                stopwatch.Stop();
                MessageBox.Show(stopwatch.Elapsed.ToString());
#endif
                MessageBox.Show("导出完成", "提示");
            });
            
        }

        private void btn_pre_emoji_Click(object sender, RoutedEventArgs e)
        {
            if(UserReader != null && ViewModel.WXContact != null)
            {
                Task.Run(() => {
                    UserReader.PreDownloadEmoji(ViewModel.WXContact.UserName);
                    MessageBox.Show("用户所有表情预下载完毕");
                });
            }
        }
    }
}