class MineModel {

    int rows, cols, numMines;
    MineGrid grid;
    boolean won = false;

    MineModel(int rows, int cols, int numMines) {
        this.rows = rows;
        this.cols = cols;
        grid = new MineGrid(rows, cols);
        grid.populateGrid(numMines);
    }

    void reset() {
        grid = new MineGrid(rows, cols);
        grid.populateGrid(numMines);        
    }

    void toggleSquare(int row, int col) {
        grid.grid[row][col].toggleMark();
    }

    boolean openSquare(int row, int col) {
        if (grid.grid[row][col].open()) return true;

        if (grid.grid[row][col].neighbourMines == 0) {
            for (int i = -1; i <= 1; i++) {
                for (int j = -1; j <= 1; j++) {
                    if (i == 0 && j == 0) continue;
                    if (checkCoords(row + i, col + j) && grid.grid[row + i][col + j].status == 0) {
                        openSquare(row + i, col + j);
                    }
                }
            }
        }
        return false;
    }

    boolean checkCoords(int row, int col) {
        return grid.checkCoords(row, col);
    }

    boolean checkIfWon() {
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                MineSquare ms = grid.grid[i][j];
                if (!ms.isMine && ms.status == 0) return false;
            }
        }
        return true;
    }

    @Override
    public String toString() {
        return grid.toString();
    }
}