package Game.TicTacToe;

import java.util.ArrayList;
import java.util.Arrays;

public class Board {

    enum State {
        CIRCLE,
        CROSS,
        EMPTY
    }

    public enum CurrentState {
        DRAW,
        CIRCLEWIN,
        CROSSWIN,
        NOTFINISHED
    }

    private ArrayList<int[]> winPatterns;
    private State[] states;


    public Board() {
        states = new State[9];
        for (int i = 0; i < states.length; i++) {
            states[i] = State.EMPTY;
        }
        winPatterns = new ArrayList<>();
        winPatterns.add(new int[]{1,1,1,0,0,0,0,0,0});
        winPatterns.add(new int[]{0,0,0,1,1,1,0,0,0});
        winPatterns.add(new int[]{0,0,0,0,0,0,1,1,1});
        winPatterns.add(new int[]{1,0,0,1,0,0,1,0,0});
        winPatterns.add(new int[]{0,1,0,0,1,0,0,1,0});
        winPatterns.add(new int[]{0,0,1,0,0,1,0,0,1});
        winPatterns.add(new int[]{0,0,1,0,1,0,1,0,0});
        winPatterns.add(new int[]{1,0,0,0,1,0,0,0,1});
    }



    public static char getStatedChar(State state) {
        switch (state) {
            case CIRCLE:
                return 'O';
            case CROSS:
                return 'X';
            case EMPTY:
                return ' ';
            default:
                return '-';
        }
    }

    public boolean setCellState(int cell, boolean cross) {
        if (cell <= 9 && cell >= 1) {
            if (this.states[cell-1] != State.EMPTY) {
                return false;
            }
            if (cross) {
                this.states[cell-1] = State.CROSS;
            } else {
                this.states[cell-1] = State.CIRCLE;
            }
        }else {
            return false;
        }
        return true;
    }


    /*
    1    ║2    ║3
      o  ║  x  ║  o
    ═════╬═════╬═════
    4    ║5    ║6
      o  ║  x  ║  o
    ═════╬═════╬═════
    7    ║8    ║9
      o  ║  x  ║  o
 */
    public ArrayList<String> getOutputBoard() {
        ArrayList<String> outputBoard = new ArrayList<>();
        outputBoard.add("1    ║2    ║3");
        outputBoard.add("  " + getStatedChar(states[0]) + "  ║  " + getStatedChar(states[1]) + "  ║  " + getStatedChar(states[2]) +"  ");
        outputBoard.add("═════╬═════╬═════");

        outputBoard.add("4    ║5    ║6");
        outputBoard.add("  " + getStatedChar(states[3]) + "  ║  " + getStatedChar(states[4]) + "  ║  " + getStatedChar(states[5]) +"  ");
        outputBoard.add("═════╬═════╬═════");

        outputBoard.add("7    ║8    ║9");
        outputBoard.add("  " + getStatedChar(states[6]) + "  ║  " + getStatedChar(states[7]) + "  ║  " + getStatedChar(states[8]) +"  ");

        return outputBoard;
    }
    
    public State[] getStates() {
        return this.states;
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof Board)) {
            return false;
        }
        Board x = (Board)o;
        for (int i = 0; i < x.getStates().length; i++) {
            if (this.getStates()[i] != x.getStates()[i]) {
                return false;
            }
        }
        return true;
    }


    //Checkfull(draw), Checkwinner clear,neue Runde und Scoreboard

    public CurrentState getCurrentState() {

        int counterCross;
        int counterCircle;

        for (int[] pattern : winPatterns) {
            counterCircle = 0;
            counterCross = 0;
            for (int i = 0; i < pattern.length; i++) {
                if (pattern[i] == 1) {
                    if (getStates()[i] == State.CIRCLE)
                        counterCircle++;
                    if (getStates()[i] == State.CROSS)
                        counterCross++;
                }
            }
            if (counterCircle >= 3)
                return CurrentState.CIRCLEWIN;
            if (counterCross >= 3)
                return CurrentState.CROSSWIN;
        }

        //Not finished
        for (int i = 0; i < getStates().length; i++) {
            if (getStates()[i] == State.EMPTY) {
                return CurrentState.NOTFINISHED;
            }
        }

        //Draw
        return CurrentState.DRAW;
    }

    public static State[] convertSimpleToState(int[] temp) {
        if (temp.length != 9)
            return null;

        State[] stateArray = new State[9];
        for (int i = 0; i < temp.length; i++) {
            switch(temp[i]) {
                case 1:
                    stateArray[i] = State.CIRCLE;
                    break;
                case 2:
                    stateArray[i] = State.CROSS;
                    break;
                default:
                    stateArray[i] = State.EMPTY;
            }
        }
        return stateArray;
    }

}