import java.util.Scanner;

public class Battleship {

    private char[][] grid;
    private char[][] printedGrid;
    private char[][] finalGrid;

    private int humanShipsHit = 0;
    private int computerShipsHit = 0;

    private String winner;

    private String storedCoordinates = "";

    private String storedHitCoordinates = "";

    private String hitPosition;

    public Battleship() {
        grid = new char[8][8];
        printedGrid = new char[8][8];

        for (int i = 0; i < printedGrid.length; i++) {
            for (int j = 0; j < printedGrid[i].length; j++) {
                printedGrid[i][j] = '_';
            }
        }
    }

    public String getStoredCoordinates() {
        return this.storedCoordinates;

    }

    private void findXPosition(String givenPosition, Coordinates gridPosition) {

        if (givenPosition.charAt(0) == 'A') {
            gridPosition.setX(0);

        } else if (givenPosition.charAt(0) == 'B') {
            gridPosition.setX(1);

        } else if (givenPosition.charAt(0) == 'C') {
            gridPosition.setX(2);

        } else if (givenPosition.charAt(0) == 'D') {
            gridPosition.setX(3);

        } else if (givenPosition.charAt(0) == 'E') {
            gridPosition.setX(4);

        } else if (givenPosition.charAt(0) == 'F') {
            gridPosition.setX(5);

        } else if (givenPosition.charAt(0) == 'G') {
            gridPosition.setX(6);

        } else if (givenPosition.charAt(0) == 'H') {
            gridPosition.setX(7);

        }

    }

    public void findYPosition(String givenPosition, Coordinates gridPosition) {

        if (givenPosition.charAt(1) == '1') {
            gridPosition.setY(0);

        } else if (givenPosition.charAt(1) == '2') {
            gridPosition.setY(1);

        } else if (givenPosition.charAt(1) == '3') {
            gridPosition.setY(2);

        } else if (givenPosition.charAt(1) == '4') {
            gridPosition.setY(3);

        } else if (givenPosition.charAt(1) == '5') {
            gridPosition.setY(4);

        } else if (givenPosition.charAt(1) == '6') {
            gridPosition.setY(5);

        } else if (givenPosition.charAt(1) == '7') {
            gridPosition.setY(6);

        } else if (givenPosition.charAt(1) == '8') {
            gridPosition.setY(7);

        }
    }

    public void placePlayerItems(Scanner reader, Coordinates ship) {

        //This method will need to loop twice
        //It loops once to place the ships and then a second time to place the grenades
        int i = 1;
        while (i <= 2) {

            //This variable will be used to determine the number of loops (4 if grenades, 6 if ships)
            int loops;

            //This variable will determine the name of the item to be displayed (Either grenade or ship)
            String item;

            //This will check to see if the loop is in its first or second iteration
            //It will make it so the loop is 6 in its first iteration (Placement of ships) and make item equal to "ship"
            if (i == 1) {
                loops = 6;
                item = "ship";

            //If the loop is in its second iteration (placement of grenades) then the loop is set to 4
            //And the value of the String item is set to "grenade"
            } else {
                loops = 4;
                item = "grenade";
            }

            System.out.println("");

            int j = 1;
            while (j <= loops) {

                System.out.print("Enter the coordinates of your " + item + " #" + j + ": ");
                String coordinate = reader.nextLine();
                coordinate = coordinate.toUpperCase();

                if (coordinate.charAt(0) > 72 || (coordinate.charAt(1) > 56 || coordinate.charAt(1) <= 48)) {
                    System.out.println("sorry, coordinates outside the grid. try again.");
                    continue;

                } else if (storedCoordinates.contains(coordinate)) {
                    System.out.println("sorry, coordinates already used. try again");
                    continue;

                } else {
                    storedCoordinates = storedCoordinates + coordinate;

                    findXPosition(coordinate, ship);
                    findYPosition(coordinate, ship);

                    int x = ship.getX();
                    int y = ship.getY();

                    if (i == 1) {
                        grid[x][y] = 'S';
                    } else {
                        grid[x][y] = 'G';
                    }

                }

                j++;
            }
            i++;

        }

    }

    public void placeComputersItems() {

        for (int i = 0; i < 6; i++) {
            boolean loop = true;

            while (loop) {
                int randomX = (int) (Math.random() * 8);
                int randomY = (int) (Math.random() * 8);

                if (grid[randomX][randomY] == '\u0000') {
                    grid[randomX][randomY] = 's';
                    loop = false;
                }
            }
        }

        for (int i = 0; i < 4; i++) {
            boolean loop = true;

            while (loop) {
                int randomX = (int) (Math.random() * 8);
                int randomY = (int) (Math.random() * 8);

                if (grid[randomX][randomY] == '\u0000') {
                    grid[randomX][randomY] = 'g';
                    loop = false;
                }
            }
        }

    }

    public void printArray() {

        for (int i = 0; i < printedGrid.length; i++) {
            System.out.print("\t");
            for (int j = 0; j < printedGrid[i].length; j++) {
                System.out.print(printedGrid[i][j] + "  ");
            }
            System.out.println("");

        }
    }

    public void hit(Scanner reader, Coordinates item) {

        String position = reader.nextLine();

        position = position.toUpperCase();

        hitPosition = position;

        if (storedHitCoordinates.contains(position)) {
            System.out.println("position already called");
            return;
        }

        findXPosition(position, item);
        findYPosition(position, item);

        int x = item.getX();
        int y = item.getY();

        if (grid[x][y] == 'S' || grid[x][y] == 's') {
            System.out.println("ship hit.");

            if (storedCoordinates.contains(position)) {
                printedGrid[x][y] = 'S';
            } else {
                printedGrid[x][y] = 's';
            }

        } else if (grid[x][y] == 'G' || grid[x][y] == 'g') {
            System.out.println("boom! grenade");

            if (storedCoordinates.contains(position)) {
                printedGrid[x][y] = 'G';
            } else {
                printedGrid[x][y] = 'g';
            }

        } else {
            System.out.println("nothing.");
            printedGrid[x][y] = '*';
        }

    }

    public void setHit(char hit, Coordinates item) {

        int x = item.getX();
        int y = item.getY();

        printedGrid[x][y] = hit;

    }

    public boolean won(Coordinates item) {


        if (storedHitCoordinates.contains(hitPosition)) {
            return false;
        }
        int x = item.getX();
        int y = item.getY();

        if (printedGrid[x][y] == 'S') {
            humanShipsHit++;
        } else if (printedGrid[x][y] == 's') {
            computerShipsHit++;
        }

        storedHitCoordinates += hitPosition;

        System.out.println("comp " + computerShipsHit);
        System.out.println("human " + humanShipsHit);

        if (humanShipsHit == 6) {
            winner = "computer";
            return true;
        } else if (computerShipsHit == 6) {
            winner = "human";
            return true;
        } else {
            return false;
        }
    }

    public String winner() {
        return this.winner;

    }

    public void printfirstGrid() {

        for (int i = 0; i < grid.length; i++) {
            for (int j = 0; j < grid[i].length; j++) {
                System.out.print(grid[i][j] + " ");
            }
            System.out.println("");
        }
    }

    public void printCoordinate(Coordinates item) {

        System.out.println("");
        System.out.println("************************");
        System.out.println(printedGrid[item.getX()][item.getY()]);
    }

    public void printChar(Scanner reader, Coordinates item) {

        String newPosition = reader.nextLine();

        newPosition = newPosition.toUpperCase();

        findXPosition(newPosition, item);
        findYPosition(newPosition, item);

        int x = item.getX();
        int y = item.getY();

        System.out.println(grid[x][y]);

    }

    public void finalGridPrint() {

        finalGrid = new char[8][8];

        for (int i = 0; i < grid.length; i++) {
            for (int j = 0; j < grid[i].length; j++) {
                if (grid[i][j] != '\u0000') {
                    printedGrid[i][j] = grid[i][j];
                } else {
                    printedGrid[i][i] = '_';
                }
            }
        }

        for (int i = 0; i < printedGrid.length; i++) {
            System.out.print("\t");
            for (int j = 0; j < printedGrid[i].length; j++) {
                System.out.print(printedGrid[i][j] + " ");
            }
            System.out.println("");
        }
    }

    public void print() {

        for (int i = 0; i < printedGrid.length; i++) {
            System.out.print("\t");
            for (int j = 0; j < printedGrid[i].length; j++) {
                System.out.print(grid[i][j] + " ");
            }
            System.out.println("");
        }
    }

}