using System.Diagnostics;

namespace Password_Manager
{
    sealed public partial class MainForm : Form
    {
        public event DataRequest PathRequest;
		public event DataRequest? RecipientRequest;

        public MainForm(DataRequest PathRequest, DataRequest RecipientRequest = null)
        {
            this.PathRequest = PathRequest;
			this.RecipientRequest = RecipientRequest;
            InitializeComponent();

            ResultList.SearchQueryRequest += () => SearchBox.Text;
            ResultList.ReloadResults();
        }

        private void ReloadResults(object? sender, EventArgs? e) //proxy method for SearchBox.TextChanged
        {
            ResultList.ReloadResults();
        }

        private void OpenPasswordGenerator(object sender, EventArgs e)
        {
			if (RecipientRequest != null)
			{
				GeneratePassword gp = new GeneratePassword(SearchBox.Text, PathRequest(), RecipientRequest());
				gp.ShowDialog();
			}
			else
			{
				throw new InvalidOperationException("You cannot use the OpenPasswordGenerator method if you instantiated this form without a RecipientRequest event handler.");
			}
        }

        private void CancelPressed(object sender, EventArgs e)
        {
            Close();
        }

        private void Decrypt(object sender, EventArgs e)
        {
            string fileName = ResultList.Text;
            try
            {
                Process proc = new Process()
                {
                    StartInfo = new ProcessStartInfo
                    {
                        FileName = "gpg.exe",
                        Arguments = $"--quiet --decrypt {PathRequest()}\\{fileName}",
                        UseShellExecute = false,
                        RedirectStandardOutput = true,
                        CreateNoWindow = true
                    }
                };

                proc.Start();
                while (!proc.StandardOutput.EndOfStream)
                {
                    string line = proc.StandardOutput.ReadLine();
                    Clipboard.SetText(line);
                    Process.Start("./ToastNotification.exe", $"\"{fileName} decrypted\" \"Password copied to clipboard\"");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            Close();
        }
    }
}