namespace AdventOfCode.Solutions._2023
{
    public class Day18(InputReader reader) : IChallange
    {
        private InputReader _inputReader = reader;

        public async Task<string> GetSolutionPart1()
        {
            Point digger = new (0, 0);
            ISet<Point> set = new HashSet<Point>() { digger };
            await foreach(string instructions in _inputReader.ReadAsStringLine())
            {
                string[] todo = instructions.Split(' ');
                int length = int.Parse(todo[1]);
                for(int i = 0; i < length; i++) 
                {
                    switch(todo[0]) 
                    {
                        case "U": digger = digger.MoveUp(); break;
                        case "D": digger = digger.MoveDown(); break;
                        case "L": digger = digger.MoveLeft(); break;
                        case "R": digger = digger.MoveRight(); break;
                    }

                    set.Add(digger);
                }
            }

            int total = set.Count;
            int movedOver = 0;
            char prev = '.';
            for(int row = 0; row <= set.Max(d => d.Y); row++) 
            { 
                for(int column = 0; column <= set.Max(d => d.X); column++)
                {
                    if (!set.Add(new(column, row)))
                    {
                        if (prev != '#')
                            movedOver++;
                        
                        prev = '#';
                        continue;
                    }

                    if (movedOver % 2 == 1)
                    {
                        prev = '.';
                        total++;
                    }
                }

                movedOver = 0;
                prev = '.';
            }

            return total.ToString();
        }

        public async Task<string> GetSolutionPart2()
        {
            return string.Empty;
        }


    }
}