using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Platform.Storage;

namespace Logof_Client;

public partial class MainWindow : Window
{
    public static MainWindow _instance;
    public Uri filePath;

    public MainWindow()
    {
        InitializeComponent();
        _instance = this;
        WindowState = WindowState.Maximized;
        Global.Load();
        Settings.Load();
    }

    private async void StartAddressCheck(KasAddressList addresses)
    {
        //var addresses = DataImport.ImportKasAddressList(path); // Ihr Code hier

        var progressWindow = new ProgressWindow();

        progressWindow.Show(_instance);

        var processor = new AddressCheck(progressWindow);
        var result = await processor.Perform(addresses);


        progressWindow.Close();


        new ResultWindow(result, addresses).Show();
        //await MessageBox.Show(_instance, $"{result.Count} Einträge fehlerhaft.", "Fertig");
    }

    private async void StartAddressRepair(Uri path)
    {
        var addresses = DataImport.ImportKasAddressList(path); // Ihr Code hier
        var progressWindow = new ProgressWindow();

        progressWindow.Show(_instance);

        var processor = new AddressRepair(progressWindow);
        //var result = await processor.Perform(addresses.Item2, errors);


        progressWindow.Close();


        //new ResultWindow(result, addresses.Item2).Show();
        //await MessageBox.Show(_instance, $"{result.Count} Einträge fehlerhaft.", "Fertig");
    }

    private void MnuExit_OnClick(object? sender, RoutedEventArgs e)
    {
        Environment.Exit(0);
    }

    private void MnuAbout_OnClick(object? sender, RoutedEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void MnuSettings_OnClick(object? sender, RoutedEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void MnuHelp_OnClick(object? sender, RoutedEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void MnuGithub_OnClick(object? sender, RoutedEventArgs e)
    {
        throw new NotImplementedException();
    }

    private async void BtnChooseFile_OnClick(object? sender, RoutedEventArgs e)
    {
        var topLevel = GetTopLevel(this);
        var file = await topLevel!.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
        {
            Title = "KAS-CSV-Datei auswählen",
            AllowMultiple = false,
            FileTypeFilter = new[]
            {
                new FilePickerFileType(".csv-Datei")
                {
                    Patterns = new[] { "*.csv" }
                    //Patterns = new[] { "*" }
                }
            }
        });

        if (file == null) return;
        //TbFilename.Text = file[0].Path.ToString();
        filePath = file[0].Path;
    }

    private void BtnCheck_OnClick(object? sender, RoutedEventArgs e)
    {
        if (LstCustomerAdressSets.SelectedIndex == -1)
        {
            MessageBox.Show(null, "Bitte zunächst ein Adress-Set auswählen", "Kein Adress-Set ausgewählt");
            return;
        }

        var set = new KasAddressList("");
        foreach (var adset in Settings._instance.addressSets.addresses)
            if (adset.Name == LstCustomerAdressSets.SelectedItem.ToString())
                set = adset;

        StartAddressCheck(set);
        // var result = DataImport.ImportKasAddressList(filePath);
        // if (result.Item1)
        // {
        //     var check_result = new AddressCheck().Perform(result.Item2);
        //     foreach (var item in check_result.Result)
        //     {
        //         Console.WriteLine();
        //         Console.Write(item.Item1 + " ");
        //         foreach (var error in item.Item2) Console.Write(error + ", ");
        //     }
        // }
    }

    private void BtnCombine_OnClick(object? sender, RoutedEventArgs e)
    {
        if (filePath == null)
        {
            MessageBox.Show(null, "Bitte zunächst eine Datei auswählen", "Datei fehlt");
            return;
        }

        StartCombine(filePath);
    }

    private async void StartCombine(Uri path)
    {
        var addresses = DataImport.ImportKasAddressList(path);
        var progressWindow = new ProgressWindow();
        var address_list = new List<KasAddressList> { addresses.Item2 };

        var topLevel = GetTopLevel(this);
        var file = await topLevel!.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
        {
            Title = "Weitere KAS-CSV-Dateien auswählen",
            AllowMultiple = true,
            FileTypeFilter = new[]
            {
                new FilePickerFileType(".csv-Dateien")
                {
                    Patterns = new[] { "*.csv" }
                    //Patterns = new[] { "*" }
                }
            }
        });

        if (file == null) return;

        //filePath = file[0].Path;
        foreach (var f in file) address_list.Add(DataImport.ImportKasAddressList(f.Path).Item2);


        progressWindow.Show(_instance);

        var processor = new CombineAddresses(progressWindow);
        var result = await processor.Perform(address_list);


        progressWindow.Close();
        File.WriteAllText(OpenSettingsSaveAsDialog().Result,
            new CsvBuilder(
                "refsid,anrede,titel,vorname,adel,name,namezus,anredzus,strasse,strasse2,plz,ort,land,pplz,postfach,name1,name2,name3,name4,name5,funktion,funktion2,abteilung,funktionad,lastupdate",
                result).BuildKas());
    }

    private async Task<string> OpenSettingsSaveAsDialog()
    {
        var settingsFileName = "KAS-Adress-Liste";

        try
        {
            var filePicker = new SaveFileDialog
            {
                Title = "Datei speichern...",
                InitialFileName = $"{settingsFileName}.csv",
                DefaultExtension = ".csv",
                Filters = new List<FileDialogFilter>
                {
                    new() { Name = "CSV-Datei", Extensions = { "csv" } }
                }
            };

            var settingsSavePath = await filePicker.ShowAsync(this);
            if (settingsSavePath == null)
            {
            }

            return settingsSavePath;
            //SettingsManager.Save(settingsSavePath);
            //Logger.Log("Settings saved at " + settingsSavePath);
        }
        catch (Exception ex)
        {
            //Logger.Log("Saving file not successful: " + ex.Message, Logger.LogType.Error);
            await MessageBox.Show(this, ex.Message, "Fehler beim Speichern der Datei");
            return null;
        }
    }

    private void BtnSettingsAddCustomer_OnClick(object? sender, RoutedEventArgs e)
    {
        Settings._instance.customers.customers.Add(new Customer());
        TbSettingsCustomerDescription.Text = "";
        TbSettingsCustomerName.Text = "";
        TbSettingsCustomerPatchInfo.Text = "";
        //Settings.Save();
        //RefreshCustomerItems();
    }

    private void TbSettingsCustomerName_OnTextChanged(object? sender, TextChangedEventArgs e)
    {
        if (LstSettingsCustomers.SelectedIndex == null || LstSettingsCustomers.SelectedIndex == -1) return;
        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Settings._instance.customers.current)
                customer.name = TbSettingsCustomerName.Text;
        //Settings.Save();
        //RefreshCustomerItems();
    }

    private void LstSettingsCustomers_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        if (LstSettingsCustomers.SelectedIndex < 0) return;
        Settings._instance.customers.current =
            Customer.GetIDByCustomerListItem(LstSettingsCustomers.SelectedItems[0].ToString());
        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Settings._instance.customers.current)
            {
                TbSettingsCustomerDescription.Text = customer.description;
                TbSettingsCustomerName.Text = customer.name;
                TbSettingsCustomerCsvSeparator.Text = customer.separator.ToString();
                if (customer.patch != null)
                    TbSettingsCustomerPatchInfo.Text = customer.patch.ToString();
                else
                    TbSettingsCustomerPatchInfo.Text = "";
            }
    }

    public void RefreshCustomerItems()
    {
        if (LstCustomers.Items.Count > 0)
            LstCustomers.SelectedIndex = -1;
        else
            LstCustomers.SelectedItem = null;

        LstCustomers.Items.Clear();
        if (LstSettingsCustomers.Items.Count > 0)
            LstSettingsCustomers.SelectedIndex = -1;
        else
            LstSettingsCustomers.SelectedItem = null;

        LstSettingsCustomers.Items.Clear();
        foreach (var customer in Settings._instance.customers.customers)
        {
            LstCustomers.Items.Add(customer.ID + " - " + customer.name);
            LstSettingsCustomers.Items.Add(customer.ID + " - " + customer.name);
        }
    }

    private void TbSettingsCustomerDescription_OnTextChanged(object? sender, TextChangedEventArgs e)
    {
        if (LstSettingsCustomers.SelectedIndex == null || LstSettingsCustomers.SelectedIndex == -1) return;
        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Settings._instance.customers.current)
                customer.description = TbSettingsCustomerDescription.Text;
        //Settings.Save();
    }

    private void BtnSettingsSaveCustomerData_OnClick(object? sender, RoutedEventArgs e)
    {
        Settings.Save();
        RefreshCustomerItems();
    }

    private void LstCustomers_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        if (LstCustomers.SelectedItems == null || LstCustomers.SelectedIndex == -1) return;
        var customer_id = int.Parse(LstCustomers.SelectedItem.ToString().Split(" - ")[0]);
        RefreshAddressSetListItems(customer_id);
    }

    private async void BtnCustomerAddressSetImport_OnClick(object? sender, RoutedEventArgs e)
    {
        var opts = new FilePickerOpenOptions();
        opts.Title = "Address-Set importieren...";
        opts.AllowMultiple = false;

        var type = new FilePickerFileType("CSV-Dateien (*.csv)");
        type.Patterns = new[] { "*.csv" };
        opts.FileTypeFilter = new[] { type };

        var paths = await StorageProvider.OpenFilePickerAsync(opts);

        if (paths?.Count <= 0) return;

        if (LstCustomers.SelectedIndex < 0) return;


        var selected_path = paths[0].Path;

        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Customer.GetIDByCustomerListItem(LstCustomers.SelectedItems[0].ToString()))
            {
                if (customer.patch == null)
                {
                    var got = DataImport.ImportKasAddressList(selected_path, null, customer.separator);
                    if (!got.Item1)
                    {
                        Console.WriteLine("Error while importing. Please try another file.");
                    }
                    else
                    {
                        got.Item2.SetOwner(customer.ID);
                        Settings._instance.addressSets.addresses.Add(got.Item2);
                    }

                    //var customer_id = int.Parse(LstCustomers.SelectedItem.ToString().Split(" - ")[0]);
                    RefreshAddressSetListItems(customer.ID);
                }
                else
                {
                    var got = DataImport.ImportKasAddressList(selected_path, customer.patch, customer.separator);
                    if (!got.Item1)
                    {
                        Console.WriteLine("Error while importing. Please try another file.");
                    }
                    else
                    {
                        got.Item2.SetOwner(customer.ID);
                        Settings._instance.addressSets.addresses.Add(got.Item2);
                    }

                    //var customer_id = int.Parse(LstCustomers.SelectedItem.ToString().Split(" - ")[0]);
                    RefreshAddressSetListItems(customer.ID);
                }
            }


        Settings.Save();
    }

    public void RefreshAddressSetListItems(int customer_id)
    {
        if (LstCustomers.SelectedIndex < 0) return;
        LstCustomerAdressSets.SelectedItems = null;
        LstCustomerAdressSets.Items.Clear();
        foreach (var k in Settings._instance.addressSets.addresses)
        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == k.owner_id && customer.ID == customer_id)
                LstCustomerAdressSets.Items.Add(k.Name);
    }

    private void LstCustomerAdressSets_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        if (LstCustomerAdressSets.SelectedItems == null || LstCustomerAdressSets.SelectedIndex == -1)
        {
            BtnCheck.IsEnabled = false;
            BtnCombine.IsEnabled = false;

            BtnGenerateLabels.IsEnabled = false;
            BtnRepair.IsEnabled = false;
            BtnShorten.IsEnabled = false;
        }
        else
        {
            BtnCheck.IsEnabled = true;
            BtnCombine.IsEnabled = true;

            // BtnGenerateLabels.IsEnabled = true;
            // BtnRepair.IsEnabled = true;
            // BtnShorten.IsEnabled = true;
        }
    }

    private async void BtnSettingsImportCustomerAddressPatch_OnClick(object? sender, RoutedEventArgs e)
    {
        if (LstSettingsCustomers.SelectedIndex == null || LstSettingsCustomers.SelectedIndex == -1) return;

        var opts = new FilePickerOpenOptions();
        opts.Title = "Address-Patch für " + LstSettingsCustomers.SelectedItems[0] + "importieren...";
        opts.AllowMultiple = false;

        var type = new FilePickerFileType("ADPAC-Dateien (*.adpac)");
        type.Patterns = new[] { "*.adpac" };
        opts.FileTypeFilter = new[] { type };

        var paths = await StorageProvider.OpenFilePickerAsync(opts);

        if (paths?.Count <= 0) return;

        //if (LstSettingsCustomers.SelectedIndex < 0) return;


        var selected_path = paths[0].Path;

        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Customer.GetIDByCustomerListItem(LstSettingsCustomers.SelectedItems[0].ToString()))
                customer.patch = AddressPatch.Import(selected_path);


        Settings.Save();
    }

    private void TbSettingsCustomerCsvSeparator_OnTextChanged(object? sender, TextChangedEventArgs e)
    {
        if (LstSettingsCustomers.SelectedIndex == null || LstSettingsCustomers.SelectedIndex == -1) return;
        var sep = !string.IsNullOrEmpty(TbSettingsCustomerCsvSeparator.Text)
            ? TbSettingsCustomerCsvSeparator.Text
            : ",";
        foreach (var customer in Settings._instance.customers.customers)
            if (customer.ID == Settings._instance.customers.current)
                try
                {
                    customer.separator = Convert.ToChar(sep);
                }
                catch (FormatException ex)
                {
                    MessageBox.Show(this, "Error while converting: " + ex.Message, "Could not parse");
                }
                catch (Exception ex)
                {
                    MessageBox.Show(this, "Unknown Error: " + ex.Message, "Error");
                }
    }
}