using System.IO;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using Microsoft.Win32;

namespace HuffmanEditor;
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    private string filePath = string.Empty;

    public MainWindow()
    {
        InitializeComponent();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        File.WriteAllBytes("C:\\Users\\retrd\\Documents\\АК.rt0", Huffman.EncodeString(File.ReadAllText("C:\\Users\\retrd\\Documents\\АК.txt")));
        //label.Content = Huffman.DecodeString(File.ReadAllBytes("C:\\Users\\retrd\\Documents\\АК.rt0"));
    }

    private void OpenFileClick(object sender, RoutedEventArgs e)
    {
        OpenFileDialog openFileDialog = new OpenFileDialog() { Filter = "Text files (*.txt;*.rt0)|*.txt;*.rt0", InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) };
        if (openFileDialog.ShowDialog()!.Value)
        {
            if (openFileDialog.FileName.EndsWith(".rt0"))
            {
                textType.Content = "Zipped text (rt0)";
                textBox.Text = Huffman.DecodeString(File.ReadAllBytes(openFileDialog.FileName));
            }
            else
            {
                textType.Content = "Plain text (txt)";
                textBox.Text = File.ReadAllText(openFileDialog.FileName);
            }
            filePath = openFileDialog.FileName;
        }
    }

    private void SaveFileClick(object sender, RoutedEventArgs e)
    {
        if (filePath == string.Empty) SaveAsClick(sender, e);
        else
        {
            File.WriteAllBytes(filePath, Huffman.EncodeString(textBox.Text));
        }
    }

    private void SaveAsClick(object sender, RoutedEventArgs e)
    {
        SaveFileDialog saveFileDialog = new SaveFileDialog() { Filter = "Text file (*.txt)|*.txt|Zipped file (*.rt0)|*.rt0", InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) };
        if (saveFileDialog.ShowDialog()!.Value)
        {
            if (saveFileDialog.FileName.EndsWith(".rt0"))
            {
                textType.Content = "Zipped text (rt0)";
                File.WriteAllBytes(saveFileDialog.FileName, Huffman.EncodeString(textBox.Text));
            }
            else
            {
                textType.Content = "Plain text (txt)";
                File.WriteAllText(saveFileDialog.FileName, textBox.Text);
            }
            filePath = saveFileDialog.FileName;
        }
    }

    private void textBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        characterCount.Content = $"Characters: {textBox.Text.Length}";
        var lineIndex = textBox.GetLineIndexFromCharacterIndex(textBox.CaretIndex); 
        var columnIndex = textBox.CaretIndex - textBox.GetCharacterIndexFromLineIndex(lineIndex);
        cursorAddress.Content = $"Ln {lineIndex}, Col {columnIndex}";
    }

    private void WordWrapClick(object sender, RoutedEventArgs e)
    {
        textBox.TextWrapping = (sender as CheckBox)!.IsChecked!.Value ? TextWrapping.Wrap : TextWrapping.NoWrap;
    }

    private void StatusStripClick(object sender, RoutedEventArgs e)
    {
        statusStrip.Height = (sender as CheckBox)!.IsChecked!.Value ? new GridLength(25, GridUnitType.Pixel) : new GridLength(0, GridUnitType.Pixel);
    }
}