QR-Code-Generator/QR-Code-Generator/QR4AudioGuide.cs

using FluentFTP;
using QRCoder;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static QRCoder.QRCodeGenerator;

namespace QR_Code_Generator
{
    public partial class QR4AudioGuide : Form
    {

        private bool drawQuietZones = true;
        private bool forceUtf8 = true;
        private int pixlesPerModul = 20;
        private int iconSizePercent = 29;
        private int iconBorderWidth = 5;
        private QRCodeGenerator.ECCLevel eCCLevel = QRCodeGenerator.ECCLevel.Q;
        List<Bitmap> qrCodeImages = new List<Bitmap>();

        AsyncFtpClient client = new AsyncFtpClient("astronomiemuseum.de", "w01d9fc3", "7sFv4vQJEQ3RTm3a");
        public QR4AudioGuide()
        {
            InitializeComponent();
        }

        private void bt_connect_Click(object sender, EventArgs e)
        {
            bt_connect.Enabled = false;
            Cursor.Current = Cursors.WaitCursor;
            Application.DoEvents();
            list();
           
        }

        private async void list()
        {
            
            Application.DoEvents();

            var dirs = await ListAllDirectoriesAsync("astronomiemuseum.de", "w01d9fc3", "7sFv4vQJEQ3RTm3a", "/audioguide.astromuseum.de");

            dataGridView1.Columns.Clear();
            dataGridView1.Columns.Add("Verzeichnis", "Verzeichnis");

            var linkColumn = new DataGridViewLinkColumn();
            linkColumn.HeaderText = "Player-URL";
            linkColumn.Name = "URL";
            linkColumn.LinkBehavior = LinkBehavior.HoverUnderline;
            linkColumn.UseColumnTextForLinkValue = false;

            dataGridView1.Columns.Add(linkColumn);

            string baseUrl = "https://audioguide.astromuseum.de/player/index.php?dir=";

            foreach (var fullPath in dirs)
            {
                // 🛑 Skip alles unter /bootstrap
                if (fullPath.Contains("/bootstrap") || fullPath.Contains("/player")) continue;

                string dir = fullPath.Split('/').Last();
                string url = baseUrl + Uri.EscapeDataString(dir);
                dataGridView1.Rows.Add(dir, url);
                Application.DoEvents();
            }

            dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
            Cursor.Current = Cursors.Default;
            bt_connect.Enabled = true;
        }


        public async Task<List<string>> ListAllDirectoriesAsync(string host, string user, string pass, string rootPath = "/")
        {
            var dirs = new List<string>();
            var token = new CancellationToken();

            using var client = new AsyncFtpClient(host, user, pass);
            await client.Connect(token);

            await ScanDirsRecursive(client, rootPath, dirs, token);

            await client.Disconnect(token);
            return dirs;
        }

        private async Task ScanDirsRecursive(AsyncFtpClient client, string path, List<string> result, CancellationToken token)
        {
            var items = await client.GetListing(path, FtpListOption.ForceList, token);

            foreach (var item in items)
            {
                if (item.Type == FtpObjectType.Directory)
                {
                    result.Add(item.FullName);
                    await ScanDirsRecursive(client, item.FullName, result, token);
                }
            }
        }

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex >= 0 && dataGridView1.Columns[e.ColumnIndex] is DataGridViewLinkColumn)
            {
                string url = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value?.ToString();
                if (!string.IsNullOrWhiteSpace(url))
                {
                    System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
                    {
                        FileName = url,
                        UseShellExecute = true
                    });
                }
            }
        }

        public void GenerateQRCodesFromSelectedRows(DataGridView dgv)
        {
            qrCodeImages.Clear();
            foreach (DataGridViewRow row in dgv.SelectedRows)
            {
                if (row.Cells["URL"].Value is string url && !string.IsNullOrWhiteSpace(url))
                {
                    string urlPayload = new PayloadGenerator.Url(url).ToString();
                    Bitmap qrCode = GenerateQRCode(urlPayload, Color.Black, Color.White, eCCLevel);

                }
            }
        }
        public void SaveSelectedQRCodes(DataGridView dgv, ECCLevel eCCLevel)
        {
            using (var folderDialog = new FolderBrowserDialog())
            {
                if (folderDialog.ShowDialog() != DialogResult.OK)
                    return;

                string selectedPath = folderDialog.SelectedPath;

                foreach (DataGridViewRow row in dgv.SelectedRows)
                {
                    if (row.Cells["URL"].Value is string url && !string.IsNullOrWhiteSpace(url))
                    {
                        string dateiname = row.Cells[0].Value?.ToString() ?? "QR";
                        string safeName = string.Join("_", dateiname.Split(Path.GetInvalidFileNameChars())); // Dateinamen absichern

                        string urlPayload = new PayloadGenerator.Url(url).ToString();
                        Bitmap qrCode = GenerateQRCode(urlPayload, Color.Black, Color.White, eCCLevel);

                        string filePath = Path.Combine(selectedPath, safeName + ".png");
                        qrCode.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
                    }
                }

                MessageBox.Show("QR-Codes gespeichert!", "Fertig", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
        private Bitmap GenerateQRCode(string payload, Color dark, Color light, QRCodeGenerator.ECCLevel eCC)
        {
            using QRCodeGenerator qrGenerator = new QRCodeGenerator();
            QRCodeData qrCodeData = qrGenerator.CreateQrCode(payload, eCC, forceUtf8);
            using QRCode qrCode = new QRCode(qrCodeData);
            // Prüfen, ob ein Icon vorhanden ist
            Bitmap? icon = Image.FromFile("Icon_Audioguid.png") as Bitmap;

            return qrCode.GetGraphic(
                pixlesPerModul,
                dark,
                light, icon, iconSizePercent, iconBorderWidth, drawQuietZones, null);

        }

        private void bt_Save_Click(object sender, EventArgs e)
        {
            SaveSelectedQRCodes(dataGridView1, eCCLevel);
        }
    }
}