using System;
using System.Diagnostics;
using System.IO;

namespace ClaudeDo.Ui.Services;

public static class ShellOpen
{
    // "nothing to open" (blank/missing path) is not an error — callers stay silent, matching the
    // existing Directory.Exists/File.Exists guards this helper replaces.
    /// <summary>Opens an http(s) URL in the default browser. Anything else is refused rather than
    /// handed to the shell — a URL comes from the worker, and `UseShellExecute` would happily run
    /// a local executable path.</summary>
    public static (bool Ok, string? Error) Url(string? url)
    {
        if (string.IsNullOrWhiteSpace(url)) return (false, null);
        if (!Uri.TryCreate(url, UriKind.Absolute, out var uri) ||
            (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
            return (false, $"Not a web URL: {url}");

        try
        {
            Process.Start(new ProcessStartInfo { FileName = uri.AbsoluteUri, UseShellExecute = true });
            return (true, null);
        }
        catch (Exception ex)
        {
            return (false, ex.Message);
        }
    }

    public static (bool Ok, string? Error) Path(string? path)
    {
        if (string.IsNullOrWhiteSpace(path)) return (false, null);
        if (!File.Exists(path) && !Directory.Exists(path)) return (false, null);
        try
        {
            Process.Start(new ProcessStartInfo { FileName = path, UseShellExecute = true });
            return (true, null);
        }
        catch (Exception ex)
        {
            return (false, ex.Message);
        }
    }
}