class MinesweeperBoard {

    board : MinesweeperTile[][] = []

    tileByCoordinates(rowIndex : number, colIndex : number) : MinesweeperTile | undefined {
        // off-by-one adjusted in user input, 0-indexed here
        if (rowIndex > this.board.length) {
            console.log("Row index out of bounds!")
            return undefined
        }
        let row = this.board[rowIndex]
        if (colIndex > row.length) {
            console.log("Column index out of bounds!")
            return undefined
        }
        return row[colIndex]
    }

    adjacentTiles(rowIndex : number, colIndex : number) : MinesweeperTile[] {
        // todo
        return []
    }

    numAdjacentMines(row : number, col : number) : number {
        let adjacentTiles = this.adjacentTiles(row, col)
        let numMines = 0
        for (let tile of adjacentTiles) {
            if (tile.hasMine) { numMines++ }
        }
        return numMines
    }
}