/*

 Copyright (C) 2014 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Piece class encapsulates a single space on the board.

 */

#import "AAPLTicTacToePiece.h"

@implementation AAPLTicTacToePiece

+ (AAPLTicTacToePiece *)X

{

    return [[self alloc] initWithType:AAPLTicTacToePieceTypeX];

}

+ (AAPLTicTacToePiece *)O

{

    return [[self alloc] initWithType:AAPLTicTacToePieceTypeO];

}

+ (AAPLTicTacToePiece *)Empty

{

    return [[self alloc] initWithType:AAPLTicTacToePieceTypeEmpty];

}

- (instancetype)initWithType:(AAPLTicTacToePieceType)type

{

    self = [super init];

    if ( self != nil )

    {

        _type = type;

    }

    return self;

}

- (BOOL)isX

{

    return self.type == AAPLTicTacToePieceTypeX;

}

- (BOOL)isO

{

    return self.type == AAPLTicTacToePieceTypeO;

}

- (BOOL)isEmpty

{

    return self.type == AAPLTicTacToePieceTypeEmpty;

}

- (void)makeX

{

    self.type = AAPLTicTacToePieceTypeX;

}

- (void)makeO

{

    self.type = AAPLTicTacToePieceTypeO;

}

- (void)makeEmpty

{

    self.type = AAPLTicTacToePieceTypeEmpty;

}

- (BOOL)sameTypeAs:(AAPLTicTacToePiece *)piece

{

    return piece.type == self.type;

}

- (NSString *)description

{

    if ( self.isX )

    {

        return NSLocalizedString(@"X", nil);

    }

    else if ( self.isO )

    {

        return NSLocalizedString(@"O", nil);

    }

    else

    {

        return  NSLocalizedString(@"empty", nil);

    }

}

@end