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

namespace Q2_VisualisingGraphs_V1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //Declare variables
            int scaleX = 10;
            int scaleY = 5;

            List<int[]> coords = new List<int[]>();
            string filePath = "W:/13/noah.phizacklea/Scholarship Exam/files/simple_graph_3.txt";

            //Try catch loop
            try
            {
                //Ensure file exists
                if (File.Exists(filePath))
                {
                    //Read the lines from the file
                    string[] lines = File.ReadAllLines(filePath);

                    //Parse into coords
                    foreach (string line in lines)
                    {
                        //Split the lines by spaces
                        string[] parts = line.Split(' ');

                        //Convert string parts to int and store in coords
                        if (parts.Length == 2 && int.TryParse(parts[0].Trim(), out int x) && int.TryParse(parts[1].Trim(), out int y))
                        {
                            coords.Add(new int[] { x, y });
                        }
                    }
                }
                else
                {
                    //File couldn't be found
                    Console.WriteLine("File not found");
                    return;
                }
            }
            catch (Exception ex)
            {
                //Error message
                Console.WriteLine("An error occurred: " + ex.Message);
                return;
            }

            //Plot the graph
            for (int y = scaleY; y >= -scaleY; y--)
            {
                Console.Write(y.ToString().PadLeft(2) + "|");

                if (y == 0)
                {
                    //Write the x-axis
                    Console.Write("+");
                    for (int x = 0; x < scaleX; x++)
                    {
                        Console.Write("-");
                    }
                    Console.WriteLine("-");
                }

                //Loop to check for points
                for (int x = 0; x <= scaleX; x++)
                {
                    //If y = 0 don't plot as the x axis causes issues
                    if (y == 0)
                    {
                        Console.Write(" ");
                        continue;
                    }

                    //Check if the coord is in the list
                    bool isPointPlotted = false;
                    foreach (var coord in coords)
                    {
                        if (coord[0] == x && coord[1] == y)
                        {
                            isPointPlotted = true;
                            break;
                        }
                    }

                    //Check if the point is correct if so place an x
                    if (isPointPlotted)
                    {
                        Console.Write("x");
                    }
                    else
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine();
            }

            //Keep the program open
            Console.ReadLine();
        }
    }
}

//Couldn't figure out how to override the x axis which had already been drawn with the new plotted point everything I tried just resulted
//in the points appearing on a new line so I decided to just not plant points at y = 0