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.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Eugen.ESystem.Windows.Forms
{
    public partial class InfoBox : Form
    {
        #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();
        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 DLL-Info
        /// <summary>
        /// Contains the name of the program file
        /// </summary>
        public static string DllName { set; get; }

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

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

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

        /// <summary>
        /// Displays a self-defined information box (for DLL-Information)
        /// </summary>
        static InfoBox()
        {
            SetDllInfo(); //Name, Version und Copyright der DLL setzen
        }

        /// <summary>
        /// Displays a self-defined information box
        /// </summary>
        /// <param name="caption">A valid string.</param>
        /// <param name="icon">The icon that is displayed.</param>
        /// <param name="title">A valid string.</param>
        /// <param name="headerRow1">A valid string.</param>
        /// <param name="headerRow2">A valid string.</param>
        /// <param name="headerRow3">A valid string.</param>
        /// <param name="text">A valid string.</param>
        /// <param name="export">'True' = The Export function is available. 'False' = The export function is not available.</param>
        public InfoBox(string caption, Icons icon, string title, string headerRow1, string headerRow2, string headerRow3, string text, bool export)
        {
            SetDllInfo(); //Name, Version und Copyright der DLL setzen

            InitializeComponent();

            SetContent(caption, icon, title, headerRow1, headerRow2, headerRow3, text, export); //Fensterinhalt setzen
        }

        /// <summary>
        /// Available Icons
        /// </summary>
        public enum Icons
        {
            Construction,
            Email,
            Error,
            Information,
            Instruction,
            Question,
            Telephon,
            Tips,
            Warning
        }

        private void buttonClose1_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void buttonClose2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        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 windowTitle, Icons icon, string title, string headerRow1, string headerRow2, string headerRow3, string text, bool export)
        {
            //Export Button freischalten oder nicht
            if (export)
            {
                buttonExport.Visible = true;
                buttonClose1.Visible = true;
                buttonClose2.Visible = false;
            }
            else
            {
                buttonExport.Visible = false;
                buttonClose1.Visible = false;
                buttonClose2.Visible = true;
            }

            //Icon setzen
            switch (icon)
            {
                case Icons.Construction:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Construction;
                    break;
                case Icons.Email:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Email;
                    break;
                case Icons.Error:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Error;
                    break;
                case Icons.Information:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Information;
                    break;
                case Icons.Instruction:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Instruction;
                    break;
                case Icons.Question:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Question;
                    break;
                case Icons.Telephon:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Telephone;
                    break;
                case Icons.Tips:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Tips;
                    break;
                case Icons.Warning:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Warning;
                    break;
                default:
                    this.pictureBox.Image = global::Eugen.ESystem.Windows.Forms.Pictures.Information;
                    break;
            }

            this.Text = windowTitle; //Fenster Titel
            labelTitle.Text = title; //Titel schreiben
            labelHeaderRow1.Text = headerRow1; //Header Zeile 1 schreiben
            labelHeaderRow2.Text = headerRow2; //Header Zeile 2 schreiben
            labelHeaderRow3.Text = headerRow3; //Header Zeile 3 schreiben
            textBox.Text = text; //Text schreiben
        }

        private string ExportText()
        {
            if (textBox.SelectionLength > 0)
            {
                return textBox.SelectedText; //Gibt den selektierten Text zurück
            }
            else
            {
                return FixLineLenght.Format(textBox.Text, 80); //Gibt den ganzen Text formatiert zurück
            }
        }

        /// <summary>
        /// Sets a user specific window size.
        /// </summary>
        /// <param name="width">A value greater than 400.</param>
        /// <param name="height">A value greater than 300.</param>
        public void SetSize(int width, int height)
        {
            this.ClientSize = new System.Drawing.Size(width - 8, height - 31);
        }
    }
}