using Eugen.ESystem.IO;
using Eugen.ESystem.Windows.Forms;
using Eugen.NX;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Windows.Forms;

namespace ShowInstalledNXversion
{
    public partial class Form1 : Form
    {
        #region Version und Copyright
        // Version und Copyright
        string programName = Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase); //Den Programmnamen auslesen
        string programVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
        static object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);
        string copyright = GenerateCopyright();
        string icon = Application.StartupPath + "\\Info.bmp";
        //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;
        }

        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 Programm-Info
        /// <summary>
        /// Contains the name of the program file
        /// </summary>
        public static string ProgramName { set; get; }

        /// <summary>
        /// Contains the version of the program file
        /// </summary>
        public static string ProgramVersion { set; get; }

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

        private void SetProgramInfo()
        {
            //Name, Version und Copyright setzen
            ProgramName = programName;
            ProgramVersion = programVersion;
            Copyright = copyright;
        }
        #endregion
        public Form1()
        {
            SetProgramInfo();
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            InstalledVersions();
        }

        private void textBoxInstallationFolder_TextChanged(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(textBoxInstallationFolder.Text))
            {
                textBoxInstalledNxVersion.Text = "";
            }
        }

        private void textBoxInstallationFolder_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                if (textBoxInstallationFolder.Text.EndsWith("\\"))
                {
                    textBoxInstallationFolder.Text = textBoxInstallationFolder.Text.TrimEnd('\\');
                }
                InstallationFolder = textBoxInstallationFolder.Text;

                InstalledVersions();
            }
        }

        private void buttonInstallationFolder_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog.ShowDialog() == DialogResult.OK)
            {
                textBoxInstallationFolder.Text = folderBrowserDialog.SelectedPath;

                InstalledVersions();
            }
        }

        private void comboBoxInstalledNX_SelectedIndexChanged(object sender, EventArgs e)
        {
            NxVersion = comboBoxInstalledNX.SelectedItem.ToString();

            ShowVersion();
        }

        private void buttonExportVersion_Click(object sender, EventArgs e)
        {
            WriteListToDesktop.Write(InstallationFolder, InstalledNxVersions);
        }

        private void buttonAbout_Click(object sender, EventArgs e)
        {
            //Zeigt das 'AboutBox' Fenster an
            var about = new AboutBox(ProgramName, ProgramVersion, Copyright, true, 550, 400);
            about.ShowDialog();
        }

        protected string InstallationFolder { private set; get; }
        protected List<string> InstalledNxVersions { private set; get; }
        protected string NxVersion { private set; get; }

        private void InstalledVersions()
        {
            if (Directory.Exists(textBoxInstallationFolder.Text))
            {
                InstallationFolder = textBoxInstallationFolder.Text;
                InstalledNxVersions = NxVersions(textBoxInstallationFolder.Text);

                foreach (var item in InstalledNxVersions)
                {
                    comboBoxInstalledNX.Items.Add(item);
                }
                comboBoxInstalledNX.SelectedIndex = 0;
                comboBoxInstalledNX.Refresh();
                NxVersion = comboBoxInstalledNX.SelectedItem.ToString();

                ShowVersion();
            }
            else
            {
                textBoxInstallationFolder.Text = "";
                InstallationFolder = textBoxInstallationFolder.Text;
                textBoxInstalledNxVersion.Text = "";
            }
        }

        private List<string> NxVersions(string folder)
        {
            List<string> version = new List<string>();

            if (Directory.Exists(folder))
            {
                
                string pattern = "NX";
                
                var versionPath = new ReadFoldersFromFolder(folder, pattern, true, false);
                foreach (var item in versionPath.FoldersFound)
                {
                    version.Add(item.Remove(0, item.LastIndexOf("\\") + 1).Replace(pattern, ""));
                }
            }
            else
            {
                throw new DirectoryNotFoundException(folder);
            }

            return version;
        }

        private void ShowVersion()
        {
            NxVersion nxVer = new NxVersion(String.Concat(InstallationFolder, "\\NX", NxVersion)); //Informationen über diese Version abrufen

            if (Convert.ToInt32(NxVersion) <= 12)
            {
                textBoxInstalledNxVersion.Text = nxVer.NXpatch;
            }
            else
            {
                textBoxInstalledNxVersion.Text = String.Concat(nxVer.UgiiMajorVersion, ".", nxVer.UgiiMinorVersion);
            }
            
        }
    }
}