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 ExtendedInfoBox : 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

        static ExtendedInfoBox()
        {
            SetDllInfo(); //Name, Version und Copyright der DLL setzen
        }

        public ExtendedInfoBox(string windowTitle, Icons icon, string title, string headerRow1, string headerRow2, string headerRow3, string text, bool export)
        {
            SetDllInfo(); //Name, Version und Copyright der DLL setzen

            InitializeComponent();

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

        private void ExtendedInfoBox_Load(object sender, EventArgs e)
        {
            try
            {
                search1.SetSearchText(textBoxText.Text); //Text aus der Textbox übergeben
                search1.RefreshDisplay += new Search.RefreshDelegate(RefreshDisplay); //Hier wird das Event abonniert
                search1.InputChanged += new Search.InputChangedDelegate(InputChanged); //Hier wird das Event abonniert

                replace1.SetSearchText(textBoxText.Text); //Text aus der Textbox übergeben
                replace1.StringFound += new Replace.EventDelegate(RefreshDisplay); //Hier wird das Event abonniert
            }
            catch (IncompleteInputException)
            {
                MessageBox.Show("Eingabe unvollständig!");
            }
            catch (StringNotMatchException)
            {
                MessageBox.Show("Keine (weitere) Übereinstimmung gefunden!");
            }
        }

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

        //Zeichnet die TextBox neu
        void RefreshDisplay(int currentCursorPosition, int searchStringLenght)
        {
            RefreshTextBox(currentCursorPosition, searchStringLenght); //Ansicht aktualisieren
        }

        //Trifft zu wenn sich die Eingabe geändert hat
        void InputChanged()
        {
            replace1.SetMoreMatch(true); //Gibt der Replace Funktion bekannt, dass es weitere Treffer gibt
        }

        private void RefreshTextBox(int currentCursorPosition, int searchStringLenght)
        {
            //Ansicht aktualisieren
            textBoxText.Text = search1.GetSearchText(); //Aktuellen Text zuweisen
            textBoxText.Focus(); //Focus auf die Textbox
            textBoxText.Select(currentCursorPosition, searchStringLenght); //Suchstring in der Textbox selektieren
            textBoxText.Refresh();
        }

        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
            textBoxText.Text = text; //Text schreiben
        }

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

        private List<int> FindPositionsOfText(string textToFind, string textToSearch)
        {
            //Wenn der Suchstring noch leer ist, dann die Methode verlassen, weil sonst endlos gesucht wird
            if (String.IsNullOrEmpty(textToFind))
            {
                return null;
            }

            List<int> result = new List<int>();

            int lastIndex = 0;
            while (textToSearch.IndexOf(textToFind, lastIndex) > -1)
            {
                result.Add(textToSearch.IndexOf(textToFind, lastIndex));
                lastIndex = result[result.Count - 1] + textToFind.Length;
            }
            return result;
        }
    }
}