/*

 Copyright (C) 2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Board class encapsulates the nine grid.

 */

#import "AAPLTicTacToeBoard.h"

@interface AAPLTicTacToeBoard ()

@property (nonatomic, strong) NSArray *rows;

@end

@implementation AAPLTicTacToeBoard

+ (NSString *)descriptionForSquare:(AAPLTicTacToeSquare *)square row:(NSUInteger)row column:(NSUInteger)column

{

    NSString *location = @"";

    if ( row == 0 && column == 0)

    {

        location = NSLocalizedString(@"top left", nil);

    }

    else if ( row == 1 && column == 0 )

    {

        location = NSLocalizedString(@"left", nil);

    }

    else if ( row == 2 && column == 0 )

    {

        location = NSLocalizedString(@"bottom left", nil);

    }

    else if ( row == 0 && column == 1)

    {

        location = NSLocalizedString(@"top", nil);

    }

    else if ( row == 1 && column == 1 )

    {

        location= NSLocalizedString(@"center", nil);

    }

    else if ( row == 2 && column == 1 )

    {

        location = NSLocalizedString(@"bottom", nil);

    }

    else if ( row == 0 && column == 2 )

    {

        location = NSLocalizedString(@"top right", nil);

    }

    else if ( row == 1 && column == 2 )

    {

        location= NSLocalizedString(@"right", nil);

    }

    else if ( row == 2 && column == 2 )

    {

        location = NSLocalizedString(@"bottom right", nil);

    }

    NSString *descriptionAndLocationFormatter = NSLocalizedString(@"DescriptionAndLocationFormatter", nil);

    return [NSString stringWithFormat:descriptionAndLocationFormatter, [square description], location];

}

- (instancetype)init

{

    self = [super init];

    if ( self != nil )

    {

        NSArray *topRow = @[[AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty]];

        NSArray *middleRow = @[[AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty]];

        NSArray *bottomRow = @[[AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty], [AAPLTicTacToeSquare Empty]];

        _rows = @[topRow, middleRow, bottomRow];

    }

    return self;

}

- (AAPLTicTacToeSquare *)squareAtRow:(NSUInteger)row column:(NSUInteger)column

{

    AAPLTicTacToeSquare *square = nil;

    if ( row < self.numRows && column < self.numColumns )

    {

        NSArray *rowArray = self.rows[row];

        square = rowArray[column];

    }

    return square;

}

- (NSArray *)squaresInRow:(NSUInteger)row

{

    return self.rows[row];

}

- (NSArray *)squaresInColumn:(NSUInteger)column

{

    NSMutableArray *columnSquares = [[NSMutableArray alloc] initWithCapacity:self.numColumns];

    for ( NSUInteger row = 0; row < self.numRows; row++ )

    {

        columnSquares[row] = self.rows[row][column];

    }

    return columnSquares;

}

- (NSUInteger)numRows

{

    return self.rows.count;

}

- (NSUInteger)numColumns

{

    NSMutableArray *firstRow = self.rows[0];

    return firstRow.count;

}

- (BOOL)isFull

{

    for ( NSUInteger row = 0; row < self.numRows; row++ )

    {

        for ( NSUInteger column = 0; column < self.numColumns; column++ )

        {

            AAPLTicTacToeSquare *square = [self squareAtRow:row column:column];

            if ( square.isEmpty )

            {

                return NO;

            }

        }

    }

    return YES;

}

- (void)reset

{

    AAPLTicTacToeSquare *square;

    for ( NSUInteger row = 0; row < self.numRows; row++ )

    {

        for ( NSUInteger column = 0; column < self.numColumns; column++ )

        {

            square = [self squareAtRow:row column:column];

            square.type = AAPLTicTacToeSquareTypeEmpty;

        }

    }

}

- (NSString *)description

{

    NSMutableString *desc = [NSMutableString new];

    AAPLTicTacToeSquare *square;

    for ( int row = 0; row < self.numRows; row++ )

    {

        for ( int column = 0; column < self.numColumns; column++ )

        {

            square = [self squareAtRow:row column:column];

            [desc appendString:[square description]];

            [desc appendString:@" "];

        }

        [desc appendString:@"\n"];

    }

    return desc;

}

@end