using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Diagnostics;

namespace FileCharsetConvert;

public partial class MainForm : Form
{
    public MainForm()
    {
        InitializeComponent();
        cmbInEnc.DataSource = Encoding.GetEncodings();
        cmbOutEnc.DataSource = Encoding.GetEncodings();
    }

    private void btnSelectFolder_Click(object sender, EventArgs e)
    {
        if (dlgFolder.ShowDialog() == DialogResult.OK)
            txtFolder.Text = dlgFolder.SelectedPath;
    }

    private void btnScan_Click(object sender, EventArgs e)
    {
        List<string> ScanResult = new List<string>();

        foreach (var item in txtFlt.Text.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries))
        {
            ScanResult.AddRange(Directory.GetFiles(txtFolder.Text, item,
                chkSubDir.Checked ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly));
        }

        var FileList = ScanResult.Distinct().ToList();

        lvMain.Items.Clear();
        foreach (var item in FileList)
        {
            var lvi = new ListViewItem();
            lvi.Text = item;
            lvi.SubItems.Add("未转换");

            lvMain.Items.Add(lvi);

        }

    }

    private void btnApplySelection_Click(object sender, EventArgs e)
    {
        foreach (ListViewItem item in lvMain.SelectedItems)
        {
            File.WriteAllText(item.Text,
                File.ReadAllText(item.Text, ((EncodingInfo)cmbInEnc.SelectedItem).GetEncoding()),
                ((EncodingInfo)cmbOutEnc.SelectedItem).GetEncoding());
            item.SubItems[1].Text = "已转换";
        }
    }

    private void lvMain_MouseDoubleClick(object sender, MouseEventArgs e)
    {
        if (lvMain.SelectedItems.Count != 0)
        {
            string filename = Path.GetTempFileName() + "-" + Path.GetFileName(lvMain.SelectedItems[0].Text) + ".txt";
            File.WriteAllText(filename,
                File.ReadAllText(lvMain.SelectedItems[0].Text, ((EncodingInfo)cmbInEnc.SelectedItem).GetEncoding()),
                ((EncodingInfo)cmbOutEnc.SelectedItem).GetEncoding());
            Process.Start(new ProcessStartInfo() { FileName = filename, UseShellExecute = true });
        }
    }
}