using Microsoft.VisualBasic.FileIO;

namespace Password_Manager
{
    static class ConfigFileManager
    {
        private static string configPath = SpecialDirectories.CurrentUserApplicationData + "\\config.cfg";

        #region Config flags
        /*Configuration: (format: fieldname=value)

         pwdStorePath: path to the folder which contains the .gpg files
         recipient: whose public key to use for encryption when a new password is created
         */
        private const char DELIMETER = '=';
        private const string RECIPIENT = "recipient";
        private const string PATH = "pwdStorePath";

        #endregion
        public static string GetPath()
        {
            try
            {
                StreamReader sr = new StreamReader(configPath);
                if (sr != null)
                {
                    while (!sr.EndOfStream)
                    {
                        string[]? fields = sr.ReadLine().Split(DELIMETER);
                        if (fields != null)
                        {
                            if (fields[0] == PATH)
                            {
                                return fields[1];
                            }
                        }
                        else
                        {
                            continue;
                        }
                    }
                }
                else
                {
                    throw new FileNotFoundException();
                }
            }
            catch (FileNotFoundException)
            {
                CreateDefaultConfig();
            }
            catch (IOException e)
            {
                MessageBox.Show(e.ToString(), "IO Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            return @"C:\Users\Typo\pass"; //TODO: temporary default value
        }

        private static void CreateDefaultConfig()
        {
            try
            {
                StreamWriter sw = new StreamWriter(configPath);
                sw.WriteLine(RECIPIENT + DELIMETER + "typo");
                sw.WriteLine(PATH + DELIMETER + @"C:\Users\Typo\pass");
                sw.Close();
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
    }
}