using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;


namespace QwirkleClassLibrary
{
    public class Game
    {
        private TileBag bag;
        private bool gameRunning;
        private Board board;

        public ReadOnlyCollection<Player> PlayerList { get; private set; }
        private readonly List<Player> players = new List<Player>();

        public Game()
        {
            board = new Board();
            bag = new TileBag(3);
            gameRunning = false;
            PlayerList = players.AsReadOnly();
        }

        public bool AddPlayerInGame(string? PlayerTag)
        {
            bool nameInvalid = string.IsNullOrWhiteSpace(PlayerTag);

            if (nameInvalid == true || this.gameRunning == true || PlayerTag == null)
            {
                return false;
            }

            if (players.Count >= 4)
            {
                return false;
            }

            for (int i = 0; i < players.Count; i++)
            {
                if (players[i].GetNameTag == PlayerTag)
                {
                    return false;
                }
            }

            Player p = new Player(PlayerTag);
            players.Add(p);

            return true;
        }

        public bool StartGame()
        {
            if (players.Count < 2)
            {
                return false;
            }

            this.gameRunning = true;
            return true;
        }


        public int GetPlayingPlayerPosition()
        {
            for (int i = 0; i < players.Count; i++)
            {
                if (players[i].IsPlaying == true)
                {
                    return i;
                }
            }
            return -1;
        }

        public int GetNbPlayers
        {
            get { return players.Count; }
        }

        // a passer en program cs
        public string ShowTileOfPlayer(int posplayer)
        {
            List<Tile> tiles = players[posplayer].Tiles.ToList();

            string r = ("Tile of " + posplayer + " : ");

            StringBuilder stringBuilder = new StringBuilder();  // A UTILISER !!! 

            foreach (Tile tile in tiles)
            {
                r = (r + " " + tile.NameColorTile());
            }
            return r;

        }

        public Tile TileOfPlayerWithPos(int postile)
        {
            return players[GetPlayingPlayerPosition()].Tiles[postile];
        }

        public void SetNextPlayer(int old, int neew)
        {

            if (old >= 0 || old != -1)
            {
                players[old].IsPlaying = false;
            }
            players[neew].IsPlaying = true;

        }

        public void TilsBagPlayer()
        {
            for (int i = 0; i < players.Count; i++)
            {
                for (int j = 0; j < 6; j++)
                {
                    Tile tile = bag.TilesBag[j];
                    players[i].AddTilePlayer(tile);
                    bag.RemoveTileInBag(tile);
                }
            }
        }

        public string NextPlayer()
        {
            int posPlayerPlay = GetPlayingPlayerPosition();

            int posPlayerNextPlay = GetPlayingPlayerPosition() + 1;

            if (posPlayerNextPlay >= GetNbPlayers)
            {
                posPlayerNextPlay = 0;
            }

            SetNextPlayer(posPlayerPlay, posPlayerNextPlay);

            return (players[posPlayerNextPlay].GetNameTag);
        }

        public bool GameRunning
        {
            get { return gameRunning; }
        }

        public bool PlaceTileGame(Tile tile, int x, int y)
        {
            bool r = board.AddTileInCell(x, y, tile);
            players[GetPlayingPlayerPosition()].RemoveTilePlayer(tile);
            return r;
        }

    }



}