using System;
using System.Collections.Generic;
using System.Diagnostics;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Platform.Storage;

namespace spplus;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void MnuExpSettings_OnClick(object? sender, RoutedEventArgs e)
    {
        var res = MessageBox.Show(this, "Dieses Feature ist noch nicht implementiert", "Fehlend");
    }

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

    private void MnuHelp_OnClick(object? sender, RoutedEventArgs e)
    {
        try
        {
            Process.Start(new ProcessStartInfo
            {
                FileName = "https://git.mypapercloud.de/fierke/spplus/wiki",
                UseShellExecute = true // Wichtig für Plattformübergreifendes Öffnen
            });
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
        }
    }

    private void MnuGit_OnClick(object? sender, RoutedEventArgs e)
    {
        try
        {
            Process.Start(new ProcessStartInfo
            {
                FileName = "https://git.mypapercloud.de/fierke/spplus",
                UseShellExecute = true // Wichtig für Plattformübergreifendes Öffnen
            });
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
        }
    }

    private void MnuAbout_OnClick(object? sender, RoutedEventArgs e)
    {
        Window w = new();
        w.WindowState = WindowState.Normal;
        w.WindowStartupLocation = WindowStartupLocation.CenterScreen;
        w.Width = 300;
        w.Height = 120;
        Grid g = new();
        TextBlock tb = new()
        {
            Text = "spplus v1.0.0\n(c)2026 MyPapertown, Elias Fierke"
        };
        g.Children.Add(tb);
        w.Content = g;
        w.Show();
    }

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

        if (file == null) return;

        var imported_students = import.ImportStudentsFromFile(file[0].Path.LocalPath.ToString());
        foreach (var s in imported_students)
        {
            Settings.Instance.Students.Add(s);
        }
        RefreshImportedStudentList();

    }

    private void RefreshImportedStudentList()
    {
        LbStudentsImported.Items.Clear();
        int count_selected = 0;
        foreach (var s in Settings.Instance.Students)
        {
            LbStudentsImported.Items.Add(s);
            count_selected += s.SelectedCourseNames.Count;
        }
        LblStudentAmount.Content =  Settings.Instance.Students.Count.ToString();
        LblSelectedAmount.Content =  count_selected.ToString();
        
        
    }

    private void BtnCraftCourses_OnClick(object? sender, RoutedEventArgs e)
    {
        // Craft courses here / call course-crafter
    }

    private void LbStudentsImported_OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        Prepare();
        var stud = (Student)LbStudentsImported.SelectedItem;
        if (stud == null)
        {
            TbStudentName.Text = string.Empty;
            TbStudentID.Text = string.Empty;
            SetEmpty();
            return;
        };

        try
        {
            TbStudentName.Text = stud.Name;
            TbStudentID.Text = stud.ID;
            LblSport1.Content = stud.SelectedCourseNames[0];
            LblSport2.Content = stud.SelectedCourseNames[1];
            LblSport3.Content = stud.SelectedCourseNames[2];
            LblSport4.Content = stud.SelectedCourseNames[3];
        }
        catch
        {
            SetEmpty();
        }

        return;
        
        void SetEmpty()
        {
            if(LblSport1.Content == "null") LblSport1.Content = "ungewählt";
            if(LblSport2.Content == "null") LblSport2.Content = "ungewählt";
            if(LblSport3.Content == "null") LblSport3.Content = "ungewählt";
            if(LblSport4.Content == "null") LblSport4.Content = "ungewählt";
        }

        void Prepare()
        {
            LblSport1.Content = "null";
            LblSport2.Content = "null";
            LblSport3.Content = "null";
            LblSport4.Content = "null";
        }
        
    }

    private void TbStudentName_OnTextChanged(object? sender, TextChangedEventArgs e)
    {
        try
        {
            ((Student)LbStudentsImported.SelectedItem).Name = TbStudentName.Text;
            //int current = LbStudentsImported.SelectedIndex;
            //RefreshImportedStudentList();
            //LbStudentsImported.SelectedIndex = current;
        }
        catch
        {
            
        }
    }
    private void TbStudentID_OnTextChanged(object? sender, TextChangedEventArgs e)
    {
        try
        {
            ((Student)LbStudentsImported.SelectedItem).Name = TbStudentID.Text;
            //int current = LbStudentsImported.SelectedIndex;
            //RefreshImportedStudentList();
            //LbStudentsImported.SelectedIndex = current;
        }
        catch
        {
            
        }
    }
}