using CzokoŚmieciarka.MonoGameView.DataModels.Enums;
using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces;
using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces.GarbageCollector;
using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces.TrashCans;
using CzokoŚmieciarka.MonoGameView.DataModels.Models;
using CzokoŚmieciarka.MonoGameView.DataModels.Models.Steps;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework.Content;
using System.Threading;

namespace MonoGameView.Algorithms
{
    public class BFS
    {
        public GarbageCollector Collector { get; set; }
        public ICloneable[,] Grid { get; set; }
        public BFS(GarbageCollector collector, ICloneable[,] grid)
        {
            this.Collector = collector;
            this.Grid = grid;
        }
        int count = 0;
        public List<Coords> Houses { get; set; }

        public List<IStep> BestPath(ContentManager content, GarbageCollector collector, ICloneable[,] grid)
        {
            Houses = new List<Coords>();
            for (int x = 0; x < grid.GetLength(0); x++)
            {
                for (int y = 0; y < grid.GetLength(1); y++)
                {
                    if (grid[x, y] is House)
                    {
                        Houses.Add(new Coords(x, y));

                    }
                }
            }



            var r = SearchBfs(content, collector, grid, 0).Key;
            Console.WriteLine($"Counts : {count}");
            if (r == null) return new List<IStep>();
            return r;

        }

        List<IStep> PossibleSteps(AGarbageCollector collector, ICloneable[,] grid)
        {


            var result = new List<IStep>();
            var itemdupa = grid[collector.Coords.X, collector.Coords.Y];
            
            if (grid[collector.Coords.X, collector.Coords.Y] is House)
            {
                var collectSteps = new List<IStep>()
                {
                    new CollectStep(GarbageType.Glass),
                    new CollectStep(GarbageType.Organic),
                    new CollectStep(GarbageType.Paper),
                    new CollectStep(GarbageType.PlasticMetal)
                };
                foreach (var item in collectSteps)
                {
                    var copyCollector = (AGarbageCollector)collector.Clone();
                    var copyGrid = CopyGrid(grid);
                    if (item.Invoke(copyCollector, copyGrid))
                        result.Add(item);
                }
            }
            if (grid[collector.Coords.X, collector.Coords.Y] is ADump)
            {
                var collectSteps = new List<IStep>()
                {
                    new SpillStep(GarbageType.Glass),
                    new SpillStep(GarbageType.Organic),
                    new SpillStep(GarbageType.Paper),
                    new SpillStep(GarbageType.PlasticMetal)
                };
                foreach (var item in collectSteps)
                {
                    var copyCollector = (AGarbageCollector)collector.Clone();
                    var copyGrid = CopyGrid(grid);
                    if (item.Invoke(copyCollector, copyGrid))
                        result.Add(item);


                }
            }
            if (!(itemdupa is House && collector.TrashContainers.All(i=>i.FillPercent==0)))
            {
                var moveSteps = new List<IStep>()
                {
                    new MoveStep(Direction.Up),
                    new MoveStep(Direction.Down),
                    new MoveStep(Direction.Left),
                    new MoveStep(Direction.Right)
                };
                var filteredMoveSteps = new List<IStep>();
                foreach (var item in moveSteps)
                {
                    var copyCollector = (AGarbageCollector)collector.Clone();
                    if (item.Invoke(copyCollector, grid))
                    {
                        var gcx = copyCollector.Coords.X;
                        var gcy = copyCollector.Coords.Y;
                        if (grid[gcx, gcy] is Road1 || grid[gcx, gcy] is House || (grid[gcx, gcy] is ADump && copyCollector.TrashContainers.Any(x => x.FillPercent > 0)))
                        {
                            result.Add(item);
                        }
                    }


                }


            }
            return result;
        }

        KeyValuePair<List<IStep>, int> SearchBfs(ContentManager content, GarbageCollector collector, ICloneable[,] grid, int length)
        {

            //Thread.Sleep(1);
            int count = 0;

            var nodes = new Queue<Tuple<List<IStep>, GarbageCollector, ICloneable[,]>>();
            nodes.Enqueue(new Tuple<List<IStep>, GarbageCollector, ICloneable[,]>(new List<IStep>(), collector, grid));
            while (true)
            {
                
                Console.WriteLine(count);
                Console.WriteLine(nodes.Count);
                count++;
                //var nodes2 = new List<Tuple<List<IStep>, GarbageCollector, ICloneable[,]>>();
                while (true)
                {
                    var item = nodes.Dequeue();
                    Thread.Sleep(10);
                    this.Collector.Coords = item.Item2.Coords;
                    this.Collector.TrashContainers = item.Item2.TrashContainers;
                    for (int x = 0; x < item.Item3.GetLength(0); x++)
                    {
                        for (int y = 0; y < item.Item3.GetLength(1); y++)
                        {
                            this.Grid[x, y] = item.Item3[x, y];
                        }
                    }

                    if (Houses.All(c => (item.Item3[c.X, c.Y] as IGarbageLocalization).TrashCans.All(j => j.FillPercent == 0.0))
                         &&
                        item.Item2.TrashContainers.All(i => i.FillPercent == 0.0)
                        )
                    {
                        return new KeyValuePair<List<IStep>, int>(item.Item1, length);
                    }
                    if (true)//item.Item2.Counter <= 12)
                    {


                        foreach (var step in PossibleSteps(item.Item2, item.Item3))
                        {
                            var collectorClone = (GarbageCollector)item.Item2.Clone();
                            var gridClone = CopyGrid(item.Item3);
                            step.Invoke(collectorClone, gridClone);


                            var steps = new List<IStep>();
                            steps.AddRange(item.Item1);
                            steps.Add(step);
                            nodes.Enqueue(new Tuple<List<IStep>, GarbageCollector, ICloneable[,]>(steps, collectorClone, gridClone));
                        }
                    }


                }
            }
        }






















        private ICloneable[,] CopyGrid(ICloneable[,] grid)
        {
            ICloneable[,] result = new ICloneable[grid.GetLength(0), grid.GetLength(1)];
            for (int x = 0; x < grid.GetLength(0); x++)
            {
                for (int y = 0; y < grid.GetLength(1); y++)
                {
                    result[x, y] = (ICloneable)grid[x, y].Clone();
                }
            }
            return result;
        }
    }
}