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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Sire; |
| 6 | |
| 7 | use Stringable; |
| 8 | |
| 9 | /** @api */ |
| 10 | final readonly class MessageFormatter |
| 11 | { |
| 12 | /** @param array<string, string> $messages */ |
| 13 | public function __construct( |
| 14 | private array $messages, |
| 15 | ) {} |
| 16 | |
| 17 | /** |
| 18 | * Templates use `{label}`, `{field}`, `{value}`, and the failure or rule |
| 19 | * arguments: named ones by their name, positional ones as `{argN}`. |
| 20 | * |
| 21 | * @param array<array-key, mixed> $args |
| 22 | * @param array<string, string> $messages |
| 23 | */ |
| 24 | public function format( |
| 25 | Failure $failure, |
| 26 | string $label, |
| 27 | string $field, |
| 28 | mixed $pristine, |
| 29 | ?string $defaultKey = null, |
| 30 | string $fallback = '{label} is invalid', |
| 31 | array $args = [], |
| 32 | array $messages = [], |
| 33 | ): string { |
| 34 | $template = $this->template($failure, $defaultKey, $fallback, $messages); |
| 35 | $args = $failure->args === [] ? $args : $failure->args; |
| 36 | |
| 37 | return self::render($template, $label, $field, $pristine, $args); |
| 38 | } |
| 39 | |
| 40 | /** @param array<string, string> $messages */ |
| 41 | private function template( |
| 42 | Failure $failure, |
| 43 | ?string $defaultKey, |
| 44 | string $fallback, |
| 45 | array $messages, |
| 46 | ): string { |
| 47 | if ($failure->key !== '' && array_key_exists($failure->key, $messages)) { |
| 48 | return $messages[$failure->key]; |
| 49 | } |
| 50 | |
| 51 | if ($defaultKey !== null && array_key_exists($defaultKey, $messages)) { |
| 52 | return $messages[$defaultKey]; |
| 53 | } |
| 54 | |
| 55 | if ($failure->key !== '' && array_key_exists($failure->key, $this->messages)) { |
| 56 | return $this->messages[$failure->key]; |
| 57 | } |
| 58 | |
| 59 | if ($defaultKey !== null && array_key_exists($defaultKey, $this->messages)) { |
| 60 | return $this->messages[$defaultKey]; |
| 61 | } |
| 62 | |
| 63 | return $failure->fallback ?? $fallback; |
| 64 | } |
| 65 | |
| 66 | /** @param array<array-key, mixed> $args */ |
| 67 | private static function render( |
| 68 | string $template, |
| 69 | string $label, |
| 70 | string $field, |
| 71 | mixed $pristine, |
| 72 | array $args, |
| 73 | ): string { |
| 74 | $values = self::placeholders( |
| 75 | $label, |
| 76 | $field, |
| 77 | self::stringify($pristine), |
| 78 | array_map(self::stringify(...), $args), |
| 79 | ); |
| 80 | $rendered = preg_replace_callback( |
| 81 | '/{{|}}|{([^{}]+)}/', |
| 82 | static function (array $matches) use ($values): string { |
| 83 | $token = $matches[0]; |
| 84 | |
| 85 | return match ($token) { |
| 86 | '{{' => '{', |
| 87 | '}}' => '}', |
| 88 | default => $values[$matches[1] ?? ''] ?? $token, |
| 89 | }; |
| 90 | }, |
| 91 | $template, |
| 92 | ); |
| 93 | |
| 94 | return $rendered ?? $template; |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Label, field, and value win over arguments of the same name. |
| 99 | * |
| 100 | * @param array<array-key, string> $args |
| 101 | * @return array<string, string> |
| 102 | */ |
| 103 | private static function placeholders( |
| 104 | string $label, |
| 105 | string $field, |
| 106 | string $value, |
| 107 | array $args, |
| 108 | ): array { |
| 109 | return [ |
| 110 | ...Arguments::keyed($args), |
| 111 | 'label' => $label, |
| 112 | 'field' => $field, |
| 113 | 'value' => $value, |
| 114 | ]; |
| 115 | } |
| 116 | |
| 117 | private static function stringify(mixed $value): string |
| 118 | { |
| 119 | return $value instanceof Stringable ? (string) $value : print_r($value, true); |
| 120 | } |
| 121 | } |