Print_server/Inspectron.Epson/PrintServer/Printers/Utils/KitchenReceiptPrinter.cs

namespace Inspectron.Epson.PrintServer.Printers.Utils;

public class KitchenReceiptPrinter
{
    private readonly int _lineWidth;
    private readonly int _bigFontLineWidth;

    public KitchenReceiptPrinter(int lineWidth = 42, int bigFontLineWidth = 21)
    {
        _lineWidth = lineWidth;
        _bigFontLineWidth = bigFontLineWidth;
    }

    public List<KitchenPrintCommand> ConvertToCommands(TranslatedKitchenReceipt receipt)
    {
        var commands = new List<KitchenPrintCommand>();

        // Header: "Warme Küche" - Big, Bold, Red, Centered
        commands.Add(new KitchenPrintCommand
        {
            Text = Center(receipt.Location, isBigFont: true),
            IsBig = true,
            IsBold = true,
            IsRed = true
        });

        commands.Add(Separator());

        // Date and Owner info - Normal, Left-aligned
        commands.Add(new KitchenPrintCommand { Text = Center(receipt.Date,false) });
        var ownerLines = receipt.Owner.Split('\n');
        foreach (var line in ownerLines)
        {
            commands.Add(new KitchenPrintCommand { Text = Center(line, false) });
        }

        // Table number - Big, Bold, Centered
        commands.Add(new KitchenPrintCommand
        {
            Text = Center($"Tisch: {receipt.Tisch}", isBigFont: true),
            IsBig = true,
            IsBold = true
        });

        commands.Add(Separator());

        // Items - Left-aligned
        foreach (var item in receipt.items)
        {
            if (item is KitchenProduct kp)
            {
                commands.Add(new KitchenPrintCommand
                {
                    Text = $"{kp.Amount}x {item.Name}"
                });
            }
            if(item is KitchenGang kg)
            {
                commands.Add(new KitchenPrintCommand
                {
                    IsRed = true,
                    IsBig = true,
                    IsBold = true,
                    Text = Center(item.Name,true)
                });
            }

        }

        commands.Add(Separator());

        return commands;
    }

    private KitchenPrintCommand Separator()
    {
        return new KitchenPrintCommand
        {
            Text = new string('-', _lineWidth)
        };
    }

    private string Center(string text, bool isBigFont)
    {
        int effectiveLineWidth = isBigFont ? _bigFontLineWidth : _lineWidth;

        if (string.IsNullOrEmpty(text) || text.Length >= effectiveLineWidth)
            return text;

        int totalPadding = effectiveLineWidth - text.Length;
        int leftPadding = totalPadding / 2;

        return new string(' ', leftPadding) + text;
    }
}