1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
declare(strict_types=1); |
4
|
|
|
|
5
|
|
|
namespace App\Crossword\Features\Constructor\Scanner; |
6
|
|
|
|
7
|
|
|
use App\Crossword\Features\Constructor\Scanner\Grid\Cell; |
8
|
|
|
use App\Crossword\Features\Constructor\Scanner\Grid\Coordinate; |
9
|
|
|
use App\Crossword\Features\Constructor\Scanner\Grid\Grid; |
10
|
|
|
use App\Crossword\Features\Constructor\Scanner\Grid\Row; |
11
|
|
|
|
12
|
|
|
final class RowYScanner |
13
|
|
|
{ |
14
|
|
|
/** |
15
|
|
|
* @return Row[] |
16
|
|
|
*/ |
17
|
|
|
public function scan(Grid $grid, int $length): array |
18
|
|
|
{ |
19
|
|
|
$result = []; |
20
|
|
|
foreach ($grid as $cell) { |
21
|
|
|
if (!$cell->isLetter()) { |
22
|
|
|
continue; |
23
|
|
|
} |
24
|
|
|
|
25
|
|
|
$leftLine = $this->doScan($grid, $cell, new Move(Move::LEFT), $length); |
26
|
|
|
$rightLine = $this->doScan($grid, $cell, new Move(Move::RIGHT), $length); |
27
|
|
|
if (count($leftLine) || count($rightLine)) { |
28
|
|
|
$result[] = new Row(...array_merge(array_reverse($leftLine), [$cell], $rightLine)); |
29
|
|
|
} |
30
|
|
|
} |
31
|
|
|
|
32
|
|
|
return $result; |
33
|
|
|
} |
34
|
|
|
|
35
|
|
|
private function doScan(Grid $grid, Cell $cell, Move $move, int $length): array |
36
|
|
|
{ |
37
|
|
|
$cell = $this->startCell($grid, $cell, $move); |
38
|
|
|
|
39
|
|
|
$line = []; |
40
|
|
|
for ($counter = 1; $counter <= $length; $counter++) { |
41
|
|
|
$coordinate = $cell->coordinate(); |
42
|
|
|
|
43
|
|
|
if ($cell->isBlack() || !$coordinate->inFrame()) { |
44
|
|
|
return $line; |
45
|
|
|
} |
46
|
|
|
|
47
|
|
|
if (!$this->isFitRow($grid, $coordinate)) { |
48
|
|
|
return []; |
49
|
|
|
} |
50
|
|
|
|
51
|
|
|
$topCell = $grid->shiftCell($coordinate->top()); |
52
|
|
|
$downCell = $grid->shiftCell($coordinate->down()); |
53
|
|
|
if (!($topCell->isEmpty() && $downCell->isEmpty())) { |
54
|
|
|
array_pop($line); |
55
|
|
|
|
56
|
|
|
return $line; |
57
|
|
|
} |
58
|
|
|
|
59
|
|
|
$line[] = $cell; |
60
|
|
|
$cell = $this->nextCell($grid, $move, $coordinate); |
61
|
|
|
if ($length === $counter && $cell->isLetter()) { |
62
|
|
|
array_pop($line); |
63
|
|
|
} |
64
|
|
|
} |
65
|
|
|
|
66
|
|
|
return $line; |
67
|
|
|
} |
68
|
|
|
|
69
|
|
|
private function isFitRow(Grid $grid, Coordinate $coordinate): bool |
70
|
|
|
{ |
71
|
|
|
$leftCell = $grid->shiftCell($coordinate->left()); |
72
|
|
|
$rightCell = $grid->shiftCell($coordinate->right()); |
73
|
|
|
|
74
|
|
|
if ($leftCell->isBlack() && $rightCell->isLetter()) { |
75
|
|
|
return false; |
76
|
|
|
} |
77
|
|
|
|
78
|
|
|
if ($leftCell->letter() && $rightCell->isLetter()) { |
79
|
|
|
return false; |
80
|
|
|
} |
81
|
|
|
|
82
|
|
|
if ($leftCell->letter() && $rightCell->isBlack()) { |
83
|
|
|
return false; |
84
|
|
|
} |
85
|
|
|
|
86
|
|
|
return true; |
87
|
|
|
} |
88
|
|
|
|
89
|
|
|
private function nextCell(Grid $grid, Move $move, Coordinate $coordinate): Cell |
90
|
|
|
{ |
91
|
|
|
$leftCell = $grid->shiftCell($coordinate->left()); |
92
|
|
|
$rightCell = $grid->shiftCell($coordinate->right()); |
93
|
|
|
|
94
|
|
|
return match ((string) $move->getValue()) { |
95
|
|
|
Move::LEFT => $leftCell, |
96
|
|
|
Move::RIGHT => $rightCell, |
97
|
|
|
}; |
98
|
|
|
} |
99
|
|
|
|
100
|
|
|
private function startCell(Grid $grid, Cell $cell, Move $move): Cell |
101
|
|
|
{ |
102
|
|
|
$coordinate = $cell->coordinate(); |
103
|
|
|
|
104
|
|
|
return match ((string) $move->getValue()) { |
105
|
|
|
Move::LEFT => $grid->shiftCell($coordinate->left()), |
106
|
|
|
Move::RIGHT => $grid->shiftCell($coordinate->right()), |
107
|
|
|
}; |
108
|
|
|
} |
109
|
|
|
} |
110
|
|
|
|