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Parse and validate AT Protocol Lexicons with DTO generation for Laravel
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8.7 kB · 292 lines
PHP
at dev
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namespace SocialDept\AtpSchema\Data\Types;
use SocialDept\AtpSchema\Data\TypeDefinition;use SocialDept\AtpSchema\Exceptions\RecordValidationException;
class StringType extends TypeDefinition{ /** * Minimum string length in bytes. */ public readonly ?int $minLength;
/** * Maximum string length in bytes. */ public readonly ?int $maxLength;
/** * Minimum string length in graphemes. */ public readonly ?int $minGraphemes;
/** * Maximum string length in graphemes. */ public readonly ?int $maxGraphemes;
/** * String format (e.g., datetime, uri, at-uri, did, handle, at-identifier, nsid, cid, language). */ public readonly ?string $format;
/** * Allowed enum values. * * @var array<string>|null */ public readonly ?array $enum;
/** * Constant value. */ public readonly ?string $const;
/** * Known values (for documentation/hints, not validation). * * @var array<string>|null */ public readonly ?array $knownValues;
/** * Create a new StringType. * * @param array<string>|null $enum * @param array<string>|null $knownValues */ public function __construct( ?string $description = null, ?int $minLength = null, ?int $maxLength = null, ?int $minGraphemes = null, ?int $maxGraphemes = null, ?string $format = null, ?array $enum = null, ?string $const = null, ?array $knownValues = null ) { parent::__construct('string', $description);
$this->minLength = $minLength; $this->maxLength = $maxLength; $this->minGraphemes = $minGraphemes; $this->maxGraphemes = $maxGraphemes; $this->format = $format; $this->enum = $enum; $this->const = $const; $this->knownValues = $knownValues; }
/** * Create from array data. */ public static function fromArray(array $data): self { return new self( description: $data['description'] ?? null, minLength: $data['minLength'] ?? null, maxLength: $data['maxLength'] ?? null, minGraphemes: $data['minGraphemes'] ?? null, maxGraphemes: $data['maxGraphemes'] ?? null, format: $data['format'] ?? null, enum: $data['enum'] ?? null, const: $data['const'] ?? null, knownValues: $data['knownValues'] ?? null ); }
/** * Convert to array. */ public function toArray(): array { $array = ['type' => $this->type];
if ($this->description !== null) { $array['description'] = $this->description; }
if ($this->minLength !== null) { $array['minLength'] = $this->minLength; }
if ($this->maxLength !== null) { $array['maxLength'] = $this->maxLength; }
if ($this->minGraphemes !== null) { $array['minGraphemes'] = $this->minGraphemes; }
if ($this->maxGraphemes !== null) { $array['maxGraphemes'] = $this->maxGraphemes; }
if ($this->format !== null) { $array['format'] = $this->format; }
if ($this->enum !== null) { $array['enum'] = $this->enum; }
if ($this->const !== null) { $array['const'] = $this->const; }
if ($this->knownValues !== null) { $array['knownValues'] = $this->knownValues; }
return $array; }
/** * Validate a value against this type definition. */ public function validate(mixed $value, string $path = ''): void { if (! is_string($value)) { throw RecordValidationException::invalidType($path, 'string', gettype($value)); }
// Const validation if ($this->const !== null && $value !== $this->const) { throw RecordValidationException::invalidValue($path, "must equal '{$this->const}'"); }
// Enum validation if ($this->enum !== null && ! in_array($value, $this->enum, true)) { throw RecordValidationException::invalidValue($path, 'must be one of: '.implode(', ', $this->enum)); }
// Length validation (bytes) $length = strlen($value);
if ($this->minLength !== null && $length < $this->minLength) { throw RecordValidationException::invalidValue($path, "must be at least {$this->minLength} bytes"); }
if ($this->maxLength !== null && $length > $this->maxLength) { throw RecordValidationException::invalidValue($path, "must be at most {$this->maxLength} bytes"); }
// Grapheme validation if ($this->minGraphemes !== null || $this->maxGraphemes !== null) { $graphemes = grapheme_strlen($value);
if ($this->minGraphemes !== null && $graphemes < $this->minGraphemes) { throw RecordValidationException::invalidValue($path, "must be at least {$this->minGraphemes} graphemes"); }
if ($this->maxGraphemes !== null && $graphemes > $this->maxGraphemes) { throw RecordValidationException::invalidValue($path, "must be at most {$this->maxGraphemes} graphemes"); } }
// Format validation if ($this->format !== null) { $this->validateFormat($value, $path); } }
/** * Validate string format. */ protected function validateFormat(string $value, string $path): void { switch ($this->format) { case 'datetime': if (! $this->isValidDatetime($value)) { throw RecordValidationException::invalidValue($path, 'must be a valid ISO 8601 datetime'); }
break;
case 'uri': if (! filter_var($value, FILTER_VALIDATE_URL)) { throw RecordValidationException::invalidValue($path, 'must be a valid URI'); }
break;
case 'at-uri': if (! str_starts_with($value, 'at://')) { throw RecordValidationException::invalidValue($path, 'must be a valid AT URI'); }
break;
case 'did': if (! str_starts_with($value, 'did:')) { throw RecordValidationException::invalidValue($path, 'must be a valid DID'); }
break;
case 'handle': if (! $this->isValidHandle($value)) { throw RecordValidationException::invalidValue($path, 'must be a valid handle'); }
break;
case 'at-identifier': // Can be either DID or handle if (! str_starts_with($value, 'did:') && ! $this->isValidHandle($value)) { throw RecordValidationException::invalidValue($path, 'must be a valid AT identifier (DID or handle)'); }
break;
case 'nsid': if (! preg_match('/^[a-zA-Z]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+$/', $value)) { throw RecordValidationException::invalidValue($path, 'must be a valid NSID'); }
break;
case 'cid': // Basic CID validation (starts with proper characters) if (! preg_match('/^[a-zA-Z0-9]+$/', $value)) { throw RecordValidationException::invalidValue($path, 'must be a valid CID'); }
break;
case 'language': // Basic language tag validation (BCP 47) if (! preg_match('/^[a-z]{2,3}(-[A-Z][a-z]{3})?(-[A-Z]{2})?$/', $value)) { throw RecordValidationException::invalidValue($path, 'must be a valid language tag'); }
break; } }
/** * Check if value is a valid ISO 8601 datetime. */ protected function isValidDatetime(string $value): bool { try { new \DateTimeImmutable($value);
return true; } catch (\Exception) { return false; } }
/** * Check if value is a valid handle. */ protected function isValidHandle(string $value): bool { // Basic handle validation: domain-like format return (bool) preg_match('/^[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+$/', $value); }}