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

namespace ConsoleApp1
{
    public static class postscriptAssembler
    {
        public static List<string> defSquares(this List<string> program, int x, int y)
        {
            program.Add("/whiteSqure{" + $"{x} 0 rlineto 0 {y} rlineto {-x} 0 rlineto closepath 0.9 setgray fill" +"} def");
            program.Add("/blackSquare{" + $"{x} 0 rlineto 0 {y} rlineto {-x} 0 rlineto closepath 0 setgray fill" + "} def");
            return program;
        }

        public static List<string> addHeader(this List<string> program)
        {
            program.Add("%! Adobe – PS");
            return program;
        }

        public static List<string> addFooter(this List<string> program)
        {
            program.Add("showpage");
            return program;
        }

        public static List<string> translate(this List<string> program, int x, int y)
        {
            program.Add($"{x} {y} translate");
            return program;
        }
        public static List<string> moveto(this List<string> program, int x, int y)
        {
            program.Add($"{x} {y} moveto");
            return program;
        }
    }
    class Program
    {
        private static void saveProgramToFile(List<string> program, string filename)
        {
            File.Delete($"E:\\{filename}.ps");
            File.AppendAllLines($"E:\\{filename}.ps", program);
        }

        static void Main(string[] args)
        {
            List<string> program = new List<string>();
            int x = 16,
                y = 16;

            int xLength = 400 / x;
            int yLength = 400 / y;
            int curposx = 0;
            int curposy = 0;

            program = program
                .addHeader()
                .defSquares(xLength, yLength)
                .translate(50, 350);

            for(int i = 0; i < x; i++)
            {
                curposy = 0;
                curposx += xLength;
                for (int j = 0; j < y; j++)
                {
                    curposy += yLength;
                    program = program.moveto(curposx, curposy);
                    if (j%2==0)
                        program[program.Count -1] += " blackSquare";
                    else
                        program[program.Count - 1] += " whiteSqure";

                }
            }

            program.addFooter();

            saveProgramToFile(program, "zad5");

            Console.Write(program);
            foreach (var line in program)
                Console.Write(line);

            //Console.ReadLine();
        }
    }
}