private static void ValidateTokenType(PlaceTokenRequest request)
{
if (!new string[] { "X", "O" }.Contains(request.Type))
{
throw new InvalidTokenException();
}
}
private void ValidatePositionFree(PlaceTokenRequest request)
{
if (_boardGateway.Read(request.Board, request.Column, request.Row) != null)
{
throw new AlreadyPlacedException();
}
}
private static void ValidateBoardIncomplete(PlaceTokenRequest request)
{
if (request.Board.IsComplete())
{
throw new BoardCompleteException();
}
}
private PlaceTokenResponse WhenIPlaceAToken(string type, int column, int row)
{
PlaceTokenRequest request = new PlaceTokenRequest
{
Board = _board,
Row = row,
Column = column,
Type = type,
};
PlaceTokenResponse response = _placeToken.Execute(request);
_board = response.Board;
return(response);
}
public PlaceTokenResponse Execute(PlaceTokenRequest request)
{
Board board = request.Board;
System.Exception error = null;
IBoardStatus status = new Incomplete();
try
{
ValidateTokenType(request);
ValidatePositionFree(request);
ValidateBoardIncomplete(request);
board = _boardGateway.Write(request.Board, request.Type, request.Column, request.Row);
_boardGateway.Flush(board);
}
catch (IndexOutOfRangeException)
{
error = new OffBoardException();
}
catch (AlreadyPlacedException)
{
error = new AlreadyPlacedException();
}
catch (InvalidTokenException)
{
error = new InvalidTokenException();
}
catch (BoardCompleteException)
{
error = new BoardCompleteException();
}
return(new PlaceTokenResponse
{
Board = board,
Error = error,
Status = board.IsComplete() ? (IBoardStatus) new Complete() : new Incomplete(),
});
}
private PlaceTokenResponse Execute(PlaceTokenRequest request)
{
return(_placeToken.Execute(request));
}
