using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace EpsonPrinter.Services
{
    public class PrintString
    {
        /// <summary>
        /// An appropriate interval is converted into the length of
        /// the tab about two texts. And make a printing data.
        /// </summary>
        /// <param name="iLineChars">
        /// The width of the territory which it prints on is converted into the number of
        /// characters, and that value is specified.
        /// </param>
        /// <param name="strBuf">
        /// It is necessary as an information for deciding the interval of the text.
        /// </param>
        /// <param name="strPrice">
        /// It is necessary as an information for deciding the interval of the text, too.
        /// </param>
        /// <returns>printing data.
        /// </returns>
        public String MakePrintString(int iLineChars, String strBuf, String strPrice)
        {
            int bufferWidth = Math.Max(0, iLineChars - strPrice.Length);
            if (strBuf.Length > bufferWidth)
            {
                strBuf = strBuf.Substring(0, bufferWidth);
            }

            return strBuf.PadRight(bufferWidth) + strPrice;
        }
	}
}