using System.Diagnostics;
using System.Reflection;
using System.Text;
//using Outlook = Microsoft.Office.Interop.Outlook;

namespace Gremlin_BlazorServer.Services
{
	internal static class FileIO
	{
		public static string ReadResource(string name)
		{
			Assembly assembly = Assembly.GetExecutingAssembly();

			// Format: "{Namespace}.{Folder}.{filename}.{Extension}"
			string resourcePath = name.StartsWith(nameof(Gremlin_BlazorServer))
				? name
				: assembly.GetManifestResourceNames().Single(str => str.EndsWith(name));

			using (Stream? stream = assembly.GetManifestResourceStream(resourcePath))
			{
				if (stream == null) { return ""; }
				using (StreamReader reader = new(stream))
				{
					return reader.ReadToEnd();
				}
			}
		}

		private static readonly Encoding defaultEncodingIfNoBom = Encoding.UTF8;

		// public static string GetFilepathFromUser(string filter = "Delimited Data File|*.csv; *.txt; *.tsv")
		// {
		// 	string _filepath = "";
		// 	OpenFileDialog dlg = new()
		// 	{
		// 		Multiselect = false,
		// 		Filter = filter
		// 	};

		// 	if (dlg.ShowDialog() == true)
		// 	{
		// 		//Auswahl dlg.filenames an passende Objekte übergeben
		// 		_filepath = dlg.FileName;
		// 	}
		// 	return _filepath;
		// }

		internal static void OpenFile(string path, string file, string type)
		{
			try
			{
				_ = Process.Start(path == "" ? $"{file}.{type}" : $"{path}\\{file}.{type}");
			}
			catch (Exception ex)
			{
				Debug.WriteLine(ex);
			}
		}

		public static Encoding GetEncoding(string fileName)
		{
			Stream fileStream = File.OpenRead(fileName);
			using (StreamReader reader = new(fileStream, defaultEncodingIfNoBom, true))
			{
				_ = reader.Peek();
				Encoding encoding = reader.CurrentEncoding;
				return encoding;
			}
		}

		// public static void WriteClipboardToTSV(string clipboard, QuoteViewModel quoteVM)
		// {
		// 	string datei = quoteVM.QuotePath + quoteVM.QuoteNumber + ".tsv";
		// 	using StreamWriter writer = new(datei, false, Encoding.UTF8);
		// 	{
		// 		writer.WriteLine(clipboard);
		// 	}
		// }

		//public static void SendQuoteViaMail(QuoteVM quoteVM)
		//{
		//    Outlook.Application application = new();

		//    Outlook.MailItem mail = application.CreateItem(Outlook.OlItemType.olMailItem) as Outlook.MailItem;

		//    mail.Subject = quoteVM.QuoteNumber;
		//    Outlook.AddressEntry currentUser = application.Session.CurrentUser.AddressEntry;

		//    if (currentUser.Type == "EX")
		//    {
		//        Outlook.ExchangeUser manager = currentUser.GetExchangeUser().GetExchangeUserManager();
		//        // Add recipient using display name, alias, or smtp address
		//        mail.Recipients.Add(manager.PrimarySmtpAddress);
		//        mail.Recipients.ResolveAll();
		//        mail.Attachments.Add($"{quoteVM.QuoteNumber}.pdf", Outlook.OlAttachmentType.olByValue, Type.Missing, Type.Missing);
		//        mail.Send();
		//    }
		//}
	}
}