using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Eugen.ESystem
{
    public static class RemoveLeadingTrailingCharacter
    {
        #region Version und Copyright
        // Version und Copyright
        static string dllName = Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase); //Den Programmnamen auslesen
        static string dllVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
        static object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);
        static string copyright = GenerateCopyright();
        //Assembly Datum und Zeit
        static DateTime value = AssemblyDateTime();
        static string date = value.ToShortDateString();
        static string time = value.ToLongTimeString();
        private static DateTime AssemblyDateTime()
        {
            var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
            var buildDateTime = new DateTime(2000, 1, 1).Add(new TimeSpan(TimeSpan.TicksPerDay * version.Build + TimeSpan.TicksPerSecond * 2 * version.Revision));
            //Tage seit dem 1. Januar 2000 und Sekunden seit Mitternacht, (multiplizier mit 2 ergibt das Original)
            return buildDateTime;
        }

        private static string CurrentYear()
        {
            DateTime dtn = DateTime.Now;
            return dtn.Year.ToString();
        }

        private static string StartYear()
        {
            string startYear = "";
            if (((AssemblyCopyrightAttribute)attributes[0]).Copyright.Contains("Copyright © "))
            {
                startYear = ((AssemblyCopyrightAttribute)attributes[0]).Copyright.Replace("Copyright © ", "");
                while (startYear.StartsWith(" "))
                {
                    startYear = startYear.Remove(0, 1);
                }
                startYear = startYear.Remove(startYear.IndexOf(" "));
                return startYear;
            }
            else
            {
                DateTime dtn = DateTime.Now;
                return dtn.Year.ToString();
            }
        }

        private static string GenerateCopyright()
        {
            string startYear = StartYear();
            string currentYear = CurrentYear();

            if (startYear == currentYear)
            {
                return ((AssemblyCopyrightAttribute)attributes[0]).Copyright;
            }
            else
            {
                return ((AssemblyCopyrightAttribute)attributes[0]).Copyright.Replace(startYear, String.Concat(startYear, "-", currentYear));
            }
        }
        #endregion

        #region DLL-Info
        /// <summary>
        /// Contains the name of the dll file.
        /// </summary>
        public static string DllName { private set; get; }

        /// <summary>
        /// Contains the version of the dll file.
        /// </summary>
        public static string DllVersion { private set; get; }

        /// <summary>
        /// Contains the copyright notice.
        /// </summary>
        public static string Copyright { private set; get; }

        /// <summary>
        /// Contains the name-, version- and copyright-information of the dll file.
        /// </summary>
        public static string[] DllInfo { private set; get; }

        static private void SetDllInfo()
        {
            //Name, Version und Copyright setzen
            DllName = dllName;
            DllVersion = dllVersion;
            Copyright = copyright;

            string[] dllInfo = new string[3];
            dllInfo[0] = dllName;
            dllInfo[1] = dllVersion;
            dllInfo[2] = copyright;
            DllInfo = dllInfo;
        }
        #endregion

        /// <summary>
        /// Removes leading or trailing characters
        /// </summary>
        static RemoveLeadingTrailingCharacter()
        {
            SetDllInfo();
        }

        /// <summary>
        /// Removes leading characters
        /// </summary>
        /// <param name="text">String with leading characters.</param>
        /// <param name="character">Leading character which should be removed.</param>
        /// <returns>String without leading characters.</returns>
        public static string RemoveLeadingCharacter(string text, char[] character)
        {
            return text.TrimStart(character);
        }

        /// <summary>
        /// Removes trailing characters
        /// </summary>
        /// <param name="text">String with trailing characters.</param>
        /// <param name="character">Trailing character which should be removed.</param>
        /// <returns>String without trailing characters.</returns>
        public static string RemoveTrailingCharacter(string text, char[] character)
        {
            return text.TrimEnd(character);
        }

        /// <summary>
        /// Removes leading and trailing characters.
        /// </summary>
        /// <param name="text">String with leading and trailing characters.</param>
        /// <param name="character">Character which should be removed.</param>
        /// <returns>String without leading and trailing characters.</returns>
        public static string RemoveLeadingAndTrailingCharacter(string text, char[] character)
        {
            return text.Trim(character);
        }
    }
}