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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Finder; |
| 6 | |
| 7 | use Cosray\Context; |
| 8 | use Cosray\Exception\ParserException; |
| 9 | |
| 10 | final class OrderCompiler |
| 11 | { |
| 12 | use CompilesField; |
| 13 | |
| 14 | public function __construct( |
| 15 | private readonly array $builtins = [], |
| 16 | private readonly ?Context $context = null, |
| 17 | ) {} |
| 18 | |
| 19 | public function compile(string $statement): string |
| 20 | { |
| 21 | if (trim($statement) === '') { |
| 22 | throw new ParserException('Empty order by clause'); |
| 23 | } |
| 24 | |
| 25 | $parsed = $this->parse($statement); |
| 26 | |
| 27 | if (count($parsed) === 0) { |
| 28 | throw new ParserException('Invalid query'); |
| 29 | } |
| 30 | |
| 31 | $expressions = []; |
| 32 | |
| 33 | foreach ($parsed as $field) { |
| 34 | $fieldName = $field['field']; |
| 35 | $expression = $this->builtins[$fieldName] ?? null; |
| 36 | |
| 37 | if (!$expression) { |
| 38 | $expression = $this->compileField($fieldName, 'n.content', localeIds: $this->localeIds()); |
| 39 | } |
| 40 | |
| 41 | $expressions[] = $expression . ' ' . $field['direction']; |
| 42 | } |
| 43 | |
| 44 | if (count($expressions) > 0) { |
| 45 | return "\n " . implode(",\n ", $expressions); |
| 46 | } |
| 47 | |
| 48 | return ''; |
| 49 | } |
| 50 | |
| 51 | private function localeIds(): array |
| 52 | { |
| 53 | if (!$this->context) { |
| 54 | return ['zxx']; |
| 55 | } |
| 56 | |
| 57 | $ids = []; |
| 58 | $locale = $this->context->locale(); |
| 59 | |
| 60 | while ($locale) { |
| 61 | $ids[] = $locale->id; |
| 62 | $locale = $locale->fallback(); |
| 63 | } |
| 64 | |
| 65 | return $ids; |
| 66 | } |
| 67 | |
| 68 | private function parse(string $statement): array |
| 69 | { |
| 70 | $fields = explode(',', $statement); |
| 71 | $pattern = '/^\s*([a-zA-Z][a-zA-Z0-9._]*)\s*(asc|desc)?\s*$/i'; |
| 72 | $result = []; |
| 73 | |
| 74 | foreach ($fields as $field) { |
| 75 | if (preg_match($pattern, trim($field), $matches)) { |
| 76 | $result[] = [ |
| 77 | 'field' => $matches[1], |
| 78 | 'direction' => strtoupper($matches[2] ?? null ?: 'ASC'), |
| 79 | ]; |
| 80 | } else { |
| 81 | throw new ParserException('Invalid order by clause'); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return $result; |
| 86 | } |
| 87 | } |