using System;
using System.Collections.Generic;
using System.IO;
using System.Windows.Forms;

namespace FontPreview;

// 被提权（runas）拉起的无界面安装子进程：
// 主程序以普通权限运行，复制好字体文件后，用 runas 启动自身并带 /install "<目录>" 参数，
// 本子进程只负责把该目录里的字体注册为系统字体，完成后弹个结果框即退出，主程序不重启、不受影响。
internal static class InstallRunner
{
	internal static void Run(string dir)
	{
		if (string.IsNullOrEmpty(dir) || !Directory.Exists(dir))
		{
			MessageBox.Show("安装目录不存在：" + dir, AppInfo.AppName + " 安装", MessageBoxButtons.OK, MessageBoxIcon.Warning);
			return;
		}
		HashSet<string> exts = new HashSet<string>(StringComparer.OrdinalIgnoreCase) { ".ttf", ".otf", ".ttc", ".ote" };
		int added = 0, skipped = 0, failed = 0;
		List<string> failNames = new List<string>();
		try
		{
			foreach (string f in Directory.GetFiles(dir))
			{
				if (!exts.Contains(Path.GetExtension(f))) continue;
				string lnk, reg;
				if (!FontManagerEx.InstallAsShortcut(f, out lnk, out reg))
				{
					failed++;
					failNames.Add(Path.GetFileName(f));
					continue;
				}
				if (lnk != null && lnk.StartsWith("（已安装")) skipped++;
				else added++;
			}
		}
		catch (Exception ex)
		{
			MessageBox.Show("安装过程异常：" + ex.Message, AppInfo.AppName + " 安装", MessageBoxButtons.OK, MessageBoxIcon.Error);
			return;
		}
		string msg = "系统字体安装完成：\r\n新注册 " + added + " 个，已存在跳过 " + skipped + " 个，失败 " + failed + " 个。";
		if (failed > 0)
		{
			msg += "\r\n\r\n失败项：";
			foreach (string n in failNames) msg += "\r\n  " + n;
		}
		msg += "\r\n\r\n若在 Word/PS 等软件中未立即出现，请注销重新登录或重启后查看。";
		MessageBox.Show(msg, AppInfo.AppName + " 安装", MessageBoxButtons.OK, MessageBoxIcon.Information);
	}
}