vpr-mitarbeiterverwaltung/DX86/Modules/ItemSelector.cs

namespace DX86.Modules;
/*
 * Copyright 2024 SnapixLP
 */
public class ItemSelector
{
    private MessageSender ms;
    public ItemSelector(MessageSender ms)
    {
        this.ms = ms;
        ms.Log("[ItemSelector] ItemSelector initialized");
    }
    
    private string listTitle = "";

    public void SetTitle(string title)
    {
        listTitle = title;
    }
    public string SelectItemFromList(string[] items)
    {
        bool noerror = true;
        while (noerror)
        {
            try
            { 
                Console.Clear();
                ms.SaveOnly(true);
                int cursorPosition = 1;
                int listPosition = 1;
                bool running = true;

                while (running)
                {
                    GenerateList(listTitle, items, cursorPosition, listPosition);
                    ConsoleKeyInfo keyInfo = Console.ReadKey(true);

                    switch (keyInfo.Key)
                    {
                        case ConsoleKey.UpArrow:
                            cursorPosition -= 1;
                            break;
                        case ConsoleKey.DownArrow:
                            cursorPosition += 1;
                            break;
                        case ConsoleKey.W:
                            listPosition -= 1;
                            break;
                        case ConsoleKey.S:
                            listPosition += 1;
                            break;
                        case ConsoleKey.Enter:
                            running = false;
                            break;
                        case ConsoleKey.F1:
                            MessageBox mbox = new MessageBox(ms);
                            mbox.ShowAsync("Help", [
                            "Use the Arrow keys to select the items from the list.",
                            "Press enter to select the items from the list.",
                            "Press F1 to see this message.",
                            ]);
                            break;
                    }

                    if (cursorPosition > items.Length)
                    {
                        cursorPosition = 1;
                        listPosition = 1;
                    }
            
                    if (cursorPosition < 1)
                    {
                        cursorPosition = items.Length;
                        listPosition = items.Length - 4;
                    }

                    if (listPosition > 1 && cursorPosition - listPosition == 0)
                    {
                        listPosition -= 1;
                    }
                    if (listPosition < items.Length - 4 && cursorPosition - listPosition == 4)
                    {
                        listPosition += 1;
                    }
            
                    Console.Clear();
            
                }
                ms.SaveOnly(false);
                Console.Clear();
                ms.SendHistory();
                noerror = false;
                return items[cursorPosition - 1];
        
            }
            catch (Exception e)
            {
                MessageBox messageBox = new MessageBox(ms);
                ms.Error("[ItemSelector] [SelectItemFromList()] An Error Occured");
                ms.Error(e.Message);
                messageBox.ShowAsync("An error Occured | ItemSelector.cs at SelectItemFromList()", [e.Message, "", "Please try again..."]);
            }
        }

        return "";
    }
    
    public static void GenerateList(string title, string[] items, int cursorPostion, int listPosition)
    {
        //Console.WriteLine($"{cursorPostion}, {listPosition}, {items.Length}, {cursorPostion - listPosition}, {listPosition < items.Length - 4}");;


        string outMessage = "";
        
        string headBar = "";
        for (int i = 1; i <= title.Length; i++)
            headBar += "=";
        
        string titleSpace = "";
        if (headBar.Length - (items[cursorPostion - 1].Length + 14) < 0)
        {
            // make int from negative to positive
            int adjustedLength = Math.Abs(headBar.Length - (items[cursorPostion - 1].Length + 14));
            for (int i = 1; i <= adjustedLength; i++)
            {
                headBar += "=";
                titleSpace += " ";
            }
        }

        string spaces = "";
        for (int i = 1; i <= headBar.Length - (items[cursorPostion - 1].Length + 14); i++)
            spaces += " ";
        
        outMessage += $"[ {headBar} ]\n";
        outMessage += ($"[ {title}{titleSpace} ]\n");
        outMessage += ($"[ Current Item: {items[cursorPostion-1]} [{cursorPostion}/{items.Length}]{spaces} ]\n");
        outMessage += ($"[ Press \"F1\" for help ]\n");
        outMessage += "\n";
        Console.WriteLine(outMessage);
        int b = listPosition - 2;
        for (int i = listPosition - 1; i < items.Length && i <= b + 5; i++)
        {
            if(i == cursorPostion - 1)
            {
                Console.ForegroundColor = ConsoleColor.DarkGreen;
                Console.WriteLine("[" + listPosition + "] " + items[i]);
                Console.ResetColor();
                listPosition++;
            }
            else
            {
                Console.WriteLine("[" + listPosition + "] " + items[i]);
                listPosition++;
            }
        }
    }
}