using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Resources;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Eugen.ESystem.Windows.Forms
{
    public partial class AboutBox : Form
    {
        #region Version und Copyright
        // Version und Copyright
        string dllName = Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase); //Den Programmnamen auslesen
        string dllVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
        static object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);
        string copyright = ((AssemblyCopyrightAttribute)attributes[0]).Copyright;
        //Assembly Datum und Zeit
        static DateTime value = AssemblyDateTime();
        string date = value.ToShortDateString();
        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;
        }
        #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; }

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

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

        public AboutBox(string programName, string programVersion, string programCopyright)
        {
            SetDllInfo(); //Name, Version und Copyright der DLL setzen

            InitializeComponent();

            SetContent(programName, programVersion, programCopyright); //Fensterinhalt setzen
        }

        protected string ProgramName { private set; get; }
        protected string ProgramVersion { private set; get; }
        protected string ProgramCopyright { private set; get; }

        private void buttonClose_Click(object sender, EventArgs e)
        {
            this.Close(); //Das Fenster schliessen
        }

        private void buttonExport_Click(object sender, EventArgs e)
        {
            //Speichert den Inhalt der TextBox oder den selektierten Bereich daraus
            saveFileDialog.Filter = Language.dialog001;
            saveFileDialog.ShowDialog();
        }

        private void saveFileDialog_FileOk(object sender, CancelEventArgs e)
        {
            string fileName = saveFileDialog.FileName;
            string text = ExportText();

            try
            {
                File.WriteAllText(fileName, text); //Schreibt den Text in eine Datei
            }
            catch (Exception)
            {
                MessageBox.Show(Language.message001,
                                Language.messageHead001,
                                MessageBoxButtons.OK,
                                MessageBoxIcon.Error,
                                MessageBoxDefaultButton.Button1);
            }
        }

        private void SetContent(string programName, string programVersion, string programCopyright)
        {
            labelProgramName.Text = programName;
            ProgramName = programName;
            if (programVersion.StartsWith("V"))
            {
                labelVersion.Text = programVersion;
                ProgramVersion = programVersion;
            }
            else
            {
                labelVersion.Text = String.Concat("Version ", programVersion);
                ProgramVersion = labelVersion.Text;
            }
            labelCopyright.Text = programCopyright;
            ProgramCopyright = programCopyright;
        }

        private void SaveFileDialogFileOk(object sender, System.ComponentModel.CancelEventArgs e)
        {
            string fileName = saveFileDialog.FileName;
            string text = ExportText();

            try
            {
                File.WriteAllText(fileName, text); //Schreibt den Text in eine Datei
            }
            catch (Exception)
            {
                
                MessageBox.Show(Language.message001,
                                Language.messageHead001,
                                MessageBoxButtons.OK,
                                MessageBoxIcon.Error,
                                MessageBoxDefaultButton.Button1);
            }
        }

        private string ExportText()
        {
            if (textBox.SelectionLength > 0)
            {
                return textBox.SelectedText; //Gibt den selektierten Text zurück
            }
            else
            {
                return String.Concat(ProgramName, "\r\n", ProgramVersion, "\r\n", ProgramCopyright, "\r\n--------------------------------------------------------------------------------\r\n", FixLineLenght.Format(textBox.Text, 80)); //Gibt den ganzen Text zurück
            }
        }
    }
}