using DatenDB;
using Deckungsbeitrag.Properties;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.LinkLabel;

namespace Deckungsbeitrag.AA_Forms
{
  public partial class FormOnBoarding : Form
  {
    private Dictionary<string, (string text, Image bild)> OnBoardingText;
    private string userid;
    private OnboardingSchritt onBoardingArt;
    private static string savePath = ConfigurationManager.AppSettings["DateiSavePfad"];
    private string[] schritte;
    private int Schritt = 0;
    private int MaxSchritte;
    private bool retour = false;

    public FormOnBoarding()
    {
      InitializeComponent();
    }

    public FormOnBoarding(string userid, OnboardingSchritt OnBoardingArt) : this()
    {
      // Wenn der Aufruf von Main kommt ist die userid die BenutzerRolle als string.
      this.userid = userid;
      this.onBoardingArt = OnBoardingArt;
    }

    private void FormOnBoarding_Load(object sender, EventArgs e)
    {
      GetDictionary();

      if (OnBoardingText != null)
      {
        MaxSchritte = OnBoardingText.Count;
        schritte = OnBoardingText.Keys.ToArray();
        LoadControls(Schritt);
      }

    }

    /// <summary>
    /// Buttons Vor und Zurück werden erstellt.
    /// </summary>
    /// <param name="schritt"></param>
    private void LoadControls(int schritt)
    {
      if (MaxSchritte == (Schritt + 1)) { this.buttonNext.Enabled = false; this.buttonFertig.Enabled = true; }
      else { this.buttonNext.Enabled = true; this.buttonFertig.Enabled = false; }
      if (Schritt == 0) this.buttonPrevious.Enabled = false;
      else this.buttonPrevious.Enabled = true;

      if (retour)
      {
        this.labelHeader.Text = $"Dein OnBoarding für {onBoardingArt}";
        this.pictureBoxScreen.Image = OnBoardingText[schritte[Schritt]].bild;
      }
      else
      {
        this.labelHeader.Text = $"Dein OnBoarding für {onBoardingArt}";
        this.pictureBoxScreen.Image = OnBoardingText[schritte[schritt]].bild;
        this.labelText.Text += OnBoardingText[schritte[schritt]].text;
      }
      
    }
    private void GetDictionary()
    {
      switch (onBoardingArt)
      {
        case OnboardingSchritt.NeuerAuftrag:
          switch (userid)
          {
            case var u when u == "fahrer":
              OnBoardingText = LoadDictionary("FahrerNeuerAuftrag");
              break;
            case var u when u == "admin":
              break;
            case var u when u == "verwaltung":
              break;
            case var u when u == "expedit":
              break;
            default:
              break;
          }
          break;
        case OnboardingSchritt.Main:
          // Unterscheidung zwischen UserID da Main unterschiedliche OnBoardings für User hat. (Unterschiedliche Buttons und GroupBoxen zu erklären)
          switch (userid)
          {
            case var u when u == "fahrer":
              OnBoardingText = LoadDictionary("FahrerMain");
              break;
            case var u when u == "admin":
              break;
            case var u when u == "verwaltung":
              break;
            default:
              break;
          }
          break;
        case OnboardingSchritt.Expedit:
          break;
        case OnboardingSchritt.Tourenplanung:
          break;
        default:
          OnBoardingText = LoadDictionary("Login");
          break;
      }
      
    }
    private Dictionary<string, (string text, Image bild)> LoadDictionary(string art)
    {
      string path = Path.Combine(savePath, "OnBoarding");
      string txtFile = "onboarding.txt";
      Dictionary<string, (string text, Image bild)> dictionary = new Dictionary<string, (string text, Image bild)>();
      
      if (!File.Exists(Path.Combine(path, txtFile)))
      {
        MessageBox.Show($"Onboarding-Datei nicht gefunden: {txtFile}", "Fehler", MessageBoxButtons.OK, MessageBoxIcon.Warning);
        Program.AddFehler(null, $"Onboarding-Datei nicht gefunden: {Path.Combine(path, txtFile)}", string.Empty, null);
        return null;  // oder Fallback-Daten laden
      }
      string[] lines = File.ReadAllLines(Path.Combine(path, "onboarding.txt"));
      int i = 0;
      foreach (string line in lines)
      {
        try
        {
          if (!line.StartsWith(art)) continue;
          var parts = line.Split('|');
          string key = parts[0].Trim();
          string text = parts[1].Trim();

          string imagePath = Path.Combine(path, key + ".png");
          if (File.Exists(imagePath))
            dictionary.Add(key, (i > 0 ? Environment.NewLine + text : text, Image.FromFile(imagePath)));
        }
        catch (Exception ex)
        {
          // Loggen oder MessageBox in WinForms
          Console.WriteLine($"Fehler bei Zeile '{line}': {ex.Message}");
          Program.AddFehler(null, $"Fehler bei Zeile '{line}': {ex.Message}", ex.StackTrace, null);
        }
        i++;
      }

      return dictionary;
    }

    private void buttonNext_Click(object sender, EventArgs e)
    {
      if (MaxSchritte == (Schritt + 1)) return;
      this.SuspendLayout();
      Schritt++;
      LoadControls(Schritt);
      this.ResumeLayout();
    }

    private void buttonPrevious_Click(object sender, EventArgs e)
    {
      if (Schritt == 0) return;
      retour = true;
      this.SuspendLayout();
      Schritt--;
      LoadControls(Schritt);
      this.ResumeLayout();
    }

    private void button_EnabledChanged(object sender, EventArgs e)
    {
      Button btn = (Button)sender;
      if (!btn.Enabled) btn.Visible = false;
      else btn.Visible = true;
    }

    private void buttonFertig_Click(object sender, EventArgs e)
    {
      this.DialogResult = DialogResult.OK;
      this.Close();
    }

    private void buttonFertig_EnabledChanged(object sender, EventArgs e)
    {
      Button btn = (Button)sender;
      if (!btn.Enabled) { btn.BackColor = Color.Gray; btn.ForeColor = Color.White; }
      else { btn.BackColor = Color.Green; btn.ForeColor = Color.White; }
    }

    private void FormOnBoarding_Resize(object sender, EventArgs e)
    {
      this.labelText.MaximumSize = new Size(this.Width, 0);
      this.pictureBoxScreen.Height = this.panelButtons.Top - this.labelText.Bottom;
      this.pictureBoxScreen.Dock = DockStyle.Bottom;

    }

    private void FormOnBoarding_Shown(object sender, EventArgs e)
    {
      this.labelText.MaximumSize = new Size(this.Width, this.pictureBoxScreen.Top);
    }

    private void labelText_Resize(object sender, EventArgs e)
    {
      if (this.labelText.Bottom <= this.pictureBoxScreen.Top) return;

      this.pictureBoxScreen.Height = this.panelButtons.Top - this.labelText.Bottom;
      this.pictureBoxScreen.Dock = DockStyle.Bottom;
    }
  }
}