TokenDialog.cs

using System.Diagnostics;
using System.Text.RegularExpressions;

namespace WhisperTranscriber;

public static class TokenDialog
{
    private static readonly Regex UrlRegex = new(@"https?://[^\s]+", RegexOptions.Compiled);

    public static string? Prompt(IWin32Window owner)
    {
        using var form = new Form
        {
            Text = L.T("hf_token_title"),
            Size = new Size(620, 340),
            FormBorderStyle = FormBorderStyle.FixedDialog,
            StartPosition = FormStartPosition.CenterParent,
            MinimizeBox = false,
            MaximizeBox = false
        };

        var lbl = new LinkLabel
        {
            Text = L.T("hf_token_text"),
            Location = new Point(12, 12),
            Size = new Size(590, 210),
            LinkBehavior = LinkBehavior.HoverUnderline
        };

        foreach (Match m in UrlRegex.Matches(lbl.Text))
            lbl.Links.Add(m.Index, m.Length, m.Value);

        lbl.LinkClicked += (_, e) =>
        {
            if (e.Link?.LinkData is string url)
            {
                try { Process.Start(new ProcessStartInfo { FileName = url, UseShellExecute = true }); }
                catch (Exception ex) { Logger.Warn($"Open URL failed: {ex.Message}"); }
            }
        };

        var txt = new TextBox
        {
            Location = new Point(12, 230),
            Size = new Size(590, 23)
        };

        var ok = new Button { Text = "OK", Location = new Point(430, 265), Size = new Size(80, 28), DialogResult = DialogResult.OK };
        var cancel = new Button { Text = "Cancel", Location = new Point(520, 265), Size = new Size(80, 28), DialogResult = DialogResult.Cancel };

        form.Controls.AddRange(new Control[] { lbl, txt, ok, cancel });
        form.AcceptButton = ok;
        form.CancelButton = cancel;

        if (form.ShowDialog(owner) != DialogResult.OK) return null;
        var token = txt.Text.Trim();
        return string.IsNullOrEmpty(token) ? null : token;
    }
}