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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** @license For full copyright and license information, please see the LICENSE.md file. */ |
| 6 | |
| 7 | namespace App\Core\Engine\Application\Validator; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use App\Core\Engine\Domain\Exception\ValidationException; |
| 12 | use App\Core\Engine\Domain\Model\FieldMetadata; |
| 13 | use App\Core\Engine\Domain\Service\HierarchyCycleValidator; |
| 14 | use PDO; |
| 15 | |
| 16 | /** |
| 17 | * Universal Validation Engine. |
| 18 | * |
| 19 | * Validates a data payload against all FieldMetadata rules for a module. |
| 20 | * Supports: mandatory, unique (via DB check), regex, range (min/max), |
| 21 | * allowed_values list, email/IP format, and self-referencing hierarchy cycle validation. |
| 22 | * |
| 23 | * @package App\Core\Engine\Application\Validator |
| 24 | */ |
| 25 | final readonly class UniversalValidationEngine |
| 26 | { |
| 27 | private HierarchyCycleValidator $cycleValidator; |
| 28 | |
| 29 | /** |
| 30 | * UniversalValidationEngine constructor. |
| 31 | * |
| 32 | * @param PDO $pdo Database connection for unique constraint checks. |
| 33 | * @param HierarchyCycleValidator|null $cycleValidator Optional cycle validator instance. |
| 34 | */ |
| 35 | public function __construct( |
| 36 | private PDO $pdo, |
| 37 | ?HierarchyCycleValidator $cycleValidator = null |
| 38 | ) { |
| 39 | $this->cycleValidator = $cycleValidator ?? new HierarchyCycleValidator($pdo); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Validates a data payload against all field metadata rules. |
| 44 | * |
| 45 | * Validates every writable field in the FieldMetadata list. |
| 46 | * Collects all errors and throws ValidationException if any are found. |
| 47 | * |
| 48 | * @param array<int, FieldMetadata> $fields All field metadata for the module. |
| 49 | * @param array<string, mixed> $data Input data payload (field_key => value). |
| 50 | * @param string $table Target database table name. |
| 51 | * @param int|null $recordId Existing record ID for updates (null for create). |
| 52 | * @throws ValidationException When one or more field values fail validation. |
| 53 | */ |
| 54 | public function validate( |
| 55 | array $fields, |
| 56 | array $data, |
| 57 | string $table, |
| 58 | ?int $recordId, |
| 59 | array $contextData = [] |
| 60 | ): void { |
| 61 | $errors = []; |
| 62 | $payload = $contextData !== [] ? array_merge($contextData, $data) : $data; |
| 63 | |
| 64 | foreach ($fields as $field) { |
| 65 | if ($field->isSystem || $field->isReadonly) { |
| 66 | continue; |
| 67 | } |
| 68 | |
| 69 | if ($recordId !== null && !array_key_exists($field->fieldKey, $data)) { |
| 70 | continue; |
| 71 | } |
| 72 | |
| 73 | $value = $data[$field->fieldKey] ?? null; |
| 74 | $error = $this->validateField($field, $value, $payload, $table, $recordId); |
| 75 | |
| 76 | if ($error !== null) { |
| 77 | $errors[$field->fieldKey] = $error; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | if ($errors !== []) { |
| 82 | throw new ValidationException($errors); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Validates a single field value against all applicable rules. |
| 88 | * |
| 89 | * @param FieldMetadata $field Field definition and rules. |
| 90 | * @param mixed $value The input value to validate. |
| 91 | * @param array<string, mixed> $data Full input payload for cross-field checks. |
| 92 | * @param string $table Target table for unique checks. |
| 93 | * @param int|null $recordId Existing record ID for update unique checks. |
| 94 | * @return string|null Error message or null if valid. |
| 95 | */ |
| 96 | private function validateField( |
| 97 | FieldMetadata $field, |
| 98 | mixed $value, |
| 99 | array $data, |
| 100 | string $table, |
| 101 | ?int $recordId |
| 102 | ): ?string { |
| 103 | if ($value === null || $value === '') { |
| 104 | return $field->isMandatory ? sprintf('Field "%s" is required.', $field->label) : null; |
| 105 | } |
| 106 | |
| 107 | $integrityError = $this->validateStructuralIntegrity($field, $value, $data, $table, $recordId); |
| 108 | if ($integrityError !== null) { |
| 109 | return $integrityError; |
| 110 | } |
| 111 | |
| 112 | return $this->validateUiType($field, $value) ?? $this->validateRules($field, $value, $data); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Validates hierarchy cycle, uniqueness integrity, and structure assignment rules. |
| 117 | * |
| 118 | * @param FieldMetadata $field Field definition. |
| 119 | * @param mixed $value The input value to validate. |
| 120 | * @param array<string, mixed> $data Full payload data. |
| 121 | * @param string $table Target database table. |
| 122 | * @param int|null $recordId Record ID for update checks. |
| 123 | * @return string|null Error message or null if valid. |
| 124 | */ |
| 125 | private function validateStructuralIntegrity( |
| 126 | FieldMetadata $field, |
| 127 | mixed $value, |
| 128 | array $data, |
| 129 | string $table, |
| 130 | ?int $recordId |
| 131 | ): ?string { |
| 132 | $cycleError = $this->validateHierarchyCycle($field, $value, $table, $recordId); |
| 133 | if ($cycleError !== null) { |
| 134 | return $cycleError; |
| 135 | } |
| 136 | |
| 137 | $ownerError = $this->validateOwnerAssignment($field, $value, $data); |
| 138 | if ($ownerError !== null) { |
| 139 | return $ownerError; |
| 140 | } |
| 141 | |
| 142 | return $field->isUnique ? $this->checkUnique($field, $value, $table, $recordId) : null; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Validates that setting parent_id does not create a hierarchy cycle. |
| 147 | * |
| 148 | * @param FieldMetadata $field Field definition. |
| 149 | * @param mixed $value Value to test. |
| 150 | * @param string $table Target database table. |
| 151 | * @param int|null $recordId Record ID for update checks. |
| 152 | * @return string|null Error message or null. |
| 153 | */ |
| 154 | private function validateHierarchyCycle( |
| 155 | FieldMetadata $field, |
| 156 | mixed $value, |
| 157 | string $table, |
| 158 | ?int $recordId |
| 159 | ): ?string { |
| 160 | if ($field->fieldKey === 'parent_id' && is_numeric($value) && $table !== '') { |
| 161 | try { |
| 162 | $this->cycleValidator->validateNoCycle($table, $recordId, (int) $value); |
| 163 | } catch (ValidationException $e) { |
| 164 | return $e->getMessage(); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | return null; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Validates that owner assignment to a structure has active users assigned. |
| 173 | * |
| 174 | * @param FieldMetadata $field Field definition. |
| 175 | * @param mixed $value Value to test. |
| 176 | * @param array<string, mixed> $data Full payload data. |
| 177 | * @return string|null Error message or null. |
| 178 | */ |
| 179 | private function validateOwnerAssignment(FieldMetadata $field, mixed $value, array $data): ?string |
| 180 | { |
| 181 | if ($field->fieldKey === 'owner') { |
| 182 | $ownerType = (string) ($data['owner_type'] ?? 'user'); |
| 183 | if ($ownerType === 'structure' && is_numeric($value)) { |
| 184 | $count = 0; |
| 185 | foreach (['c_rel_users_structure', 'a_rel_users_structure'] as $relTbl) { |
| 186 | try { |
| 187 | $stmt = $this->pdo->prepare("SELECT COUNT(*) FROM `{$relTbl}` WHERE `structure_id` = :sid"); |
| 188 | $stmt->execute([':sid' => (int) $value]); |
| 189 | $count = (int) $stmt->fetchColumn(); |
| 190 | break; |
| 191 | } catch (\Throwable) { |
| 192 | // Check next candidate |
| 193 | } |
| 194 | } |
| 195 | if ($count === 0) { |
| 196 | return sprintf( |
| 197 | 'Cannot assign "%s" to an organizational unit that has no active users.', |
| 198 | $field->label |
| 199 | ); |
| 200 | } |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | return null; |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Validates field value format against its UiType definition. |
| 209 | * |
| 210 | * @param FieldMetadata $field Field definition. |
| 211 | * @param mixed $value Non-empty value to validate. |
| 212 | * @return string|null Error message or null if valid. |
| 213 | */ |
| 214 | private function validateUiType(FieldMetadata $field, mixed $value): ?string |
| 215 | { |
| 216 | return match ($field->uitypeName) { |
| 217 | 'email_input', 'email' => !filter_var($value, FILTER_VALIDATE_EMAIL) |
| 218 | ? sprintf('Field "%s" must be a valid email address.', $field->label) |
| 219 | : null, |
| 220 | 'url_input', 'url', 'website' => (!filter_var($value, FILTER_VALIDATE_URL) |
| 221 | || !preg_match('#^https?://#i', (string) $value)) |
| 222 | ? sprintf('Field "%s" must be a valid URL starting with http:// or https://.', $field->label) |
| 223 | : null, |
| 224 | 'ip_address' => !filter_var($value, FILTER_VALIDATE_IP) |
| 225 | ? sprintf('Field "%s" must be a valid IPv4 or IPv6 address.', $field->label) |
| 226 | : null, |
| 227 | 'integer_number', 'bigint_number' => (filter_var($value, FILTER_VALIDATE_INT) === false) |
| 228 | ? sprintf('Field "%s" must be an integer number.', $field->label) |
| 229 | : null, |
| 230 | 'decimal_number', 'currency_amount' => !is_numeric($value) |
| 231 | ? sprintf('Field "%s" must be a valid number.', $field->label) |
| 232 | : null, |
| 233 | 'boolean_toggle', 'boolean', 'toggle' => !in_array( |
| 234 | $value, |
| 235 | [0, 1, '0', '1', true, false, 'true', 'false'], |
| 236 | true |
| 237 | ) |
| 238 | ? sprintf('Field "%s" must be a boolean value.', $field->label) |
| 239 | : null, |
| 240 | 'json_display', 'json_array', 'fields_selector' => $this->validateJsonField($field, $value), |
| 241 | default => null, |
| 242 | }; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Validates that field contains valid JSON string. |
| 247 | */ |
| 248 | private function validateJsonField(FieldMetadata $field, mixed $value): ?string |
| 249 | { |
| 250 | if (is_string($value) && function_exists('json_validate') && !json_validate($value)) { |
| 251 | return sprintf('Field "%s" must be valid JSON.', $field->label); |
| 252 | } |
| 253 | |
| 254 | return null; |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Validates field value against validation_rules JSON configuration. |
| 259 | * |
| 260 | * @param FieldMetadata $field Field definition with validation rules. |
| 261 | * @param mixed $value Non-empty value to validate. |
| 262 | * @param array<string, mixed> $data Full input data payload for cross-field validation. |
| 263 | * @return string|null Error message or null if valid. |
| 264 | */ |
| 265 | private function validateRules(FieldMetadata $field, mixed $value, array $data): ?string |
| 266 | { |
| 267 | $rules = $field->validationRules; |
| 268 | |
| 269 | $error = $this->validateMin($field, $value, $rules) |
| 270 | ?? $this->validateMax($field, $value, $rules) |
| 271 | ?? $this->validateFormatAndAllowed($field, $value, $rules); |
| 272 | |
| 273 | return $error ?? $this->validateCrossFieldRules($field, $value, $data, $rules); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Validates cross-field relational rules (after_or_equal, max_duration_hours). |
| 278 | * |
| 279 | * @param FieldMetadata $field Field definition. |
| 280 | * @param mixed $value Current field value. |
| 281 | * @param array<string, mixed> $data Full input payload. |
| 282 | * @param array<string, mixed> $rules Decoded validation rules. |
| 283 | * @return string|null Error message or null if valid. |
| 284 | */ |
| 285 | private function validateCrossFieldRules( |
| 286 | FieldMetadata $field, |
| 287 | mixed $value, |
| 288 | array $data, |
| 289 | array $rules |
| 290 | ): ?string { |
| 291 | $afterError = $this->validateAfterOrEqual($field, $value, $data, $rules); |
| 292 | if ($afterError !== null) { |
| 293 | return $afterError; |
| 294 | } |
| 295 | |
| 296 | return $this->validateMaxDurationHours($field, $value, $data, $rules); |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * Validates that field date is after or equal to target field date. |
| 301 | * |
| 302 | * @param FieldMetadata $field Field definition. |
| 303 | * @param mixed $value Current field value. |
| 304 | * @param array<string, mixed> $data Full input payload. |
| 305 | * @param array<string, mixed> $rules Decoded validation rules. |
| 306 | * @return string|null Error message or null if valid. |
| 307 | */ |
| 308 | private function validateAfterOrEqual( |
| 309 | FieldMetadata $field, |
| 310 | mixed $value, |
| 311 | array $data, |
| 312 | array $rules |
| 313 | ): ?string { |
| 314 | $targetKey = is_string($rules['after_or_equal'] ?? null) ? $rules['after_or_equal'] : null; |
| 315 | $targetVal = $targetKey !== null ? ($data[$targetKey] ?? null) : null; |
| 316 | if ($targetKey === null || $targetVal === null || $targetVal === '') { |
| 317 | return null; |
| 318 | } |
| 319 | |
| 320 | $targetTime = strtotime((string) $targetVal); |
| 321 | $currTime = strtotime((string) $value); |
| 322 | |
| 323 | if ($targetTime !== false && $currTime !== false && $currTime < $targetTime) { |
| 324 | return sprintf('Field "%s" cannot be earlier than "%s".', $field->label, $targetKey); |
| 325 | } |
| 326 | |
| 327 | return null; |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * Validates that duration between target field and current field does not exceed hours limit. |
| 332 | * |
| 333 | * @param FieldMetadata $field Field definition. |
| 334 | * @param mixed $value Current field value. |
| 335 | * @param array<string, mixed> $data Full input payload. |
| 336 | * @param array<string, mixed> $rules Decoded validation rules. |
| 337 | * @return string|null Error message or null if valid. |
| 338 | */ |
| 339 | private function validateMaxDurationHours( |
| 340 | FieldMetadata $field, |
| 341 | mixed $value, |
| 342 | array $data, |
| 343 | array $rules |
| 344 | ): ?string { |
| 345 | $refKey = is_string($rules['after_or_equal'] ?? null) ? $rules['after_or_equal'] : 'start_date'; |
| 346 | $refVal = $data[$refKey] ?? null; |
| 347 | if (!isset($rules['max_duration_hours']) |
| 348 | || !is_numeric($rules['max_duration_hours']) |
| 349 | || $refVal === null |
| 350 | || $refVal === '' |
| 351 | ) { |
| 352 | return null; |
| 353 | } |
| 354 | |
| 355 | $startTime = strtotime((string) $refVal); |
| 356 | $endTime = strtotime((string) $value); |
| 357 | $maxHours = (float) $rules['max_duration_hours']; |
| 358 | |
| 359 | if ($startTime !== false && $endTime !== false && ($endTime - $startTime) > ($maxHours * 3600)) { |
| 360 | return sprintf( |
| 361 | 'Duration between "%s" and "%s" cannot exceed %s hours.', |
| 362 | $refKey, |
| 363 | $field->label, |
| 364 | (string) $maxHours |
| 365 | ); |
| 366 | } |
| 367 | |
| 368 | return null; |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * Validates min length / numeric range. |
| 373 | * |
| 374 | * @param FieldMetadata $field Field metadata. |
| 375 | * @param mixed $value Input value. |
| 376 | * @param array<string, mixed> $rules Rule config. |
| 377 | * |
| 378 | * @return string|null Error message or null. |
| 379 | */ |
| 380 | private function validateMin(FieldMetadata $field, mixed $value, array $rules): ?string |
| 381 | { |
| 382 | if (isset($rules['min_length']) && mb_strlen((string) $value) < (int) $rules['min_length']) { |
| 383 | return sprintf( |
| 384 | 'Field "%s" length must be at least %d characters.', |
| 385 | $field->label, |
| 386 | (int) $rules['min_length'] |
| 387 | ); |
| 388 | } |
| 389 | if (isset($rules['min'])) { |
| 390 | $numValue = is_numeric($value) ? (float) $value : mb_strlen((string) $value); |
| 391 | if ($numValue < (float) $rules['min']) { |
| 392 | return sprintf('Field "%s" must be at least %s.', $field->label, (string) $rules['min']); |
| 393 | } |
| 394 | } |
| 395 | return null; |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Validates max length / numeric range. |
| 400 | * |
| 401 | * @param FieldMetadata $field Field metadata. |
| 402 | * @param mixed $value Input value. |
| 403 | * @param array<string, mixed> $rules Rule config. |
| 404 | * |
| 405 | * @return string|null Error message or null. |
| 406 | */ |
| 407 | private function validateMax(FieldMetadata $field, mixed $value, array $rules): ?string |
| 408 | { |
| 409 | if (isset($rules['max_length']) && mb_strlen((string) $value) > (int) $rules['max_length']) { |
| 410 | return sprintf( |
| 411 | 'Field "%s" length must not exceed %d characters.', |
| 412 | $field->label, |
| 413 | (int) $rules['max_length'] |
| 414 | ); |
| 415 | } |
| 416 | if (isset($rules['max'])) { |
| 417 | $numValue = is_numeric($value) ? (float) $value : mb_strlen((string) $value); |
| 418 | if ($numValue > (float) $rules['max']) { |
| 419 | return sprintf('Field "%s" must not exceed %s.', $field->label, (string) $rules['max']); |
| 420 | } |
| 421 | } |
| 422 | return null; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Validates regex format and allowed values enum. |
| 427 | * |
| 428 | * @param FieldMetadata $field Field metadata. |
| 429 | * @param mixed $value Input value. |
| 430 | * @param array<string, mixed> $rules Rule config. |
| 431 | * |
| 432 | * @return string|null Error message or null. |
| 433 | */ |
| 434 | private function validateFormatAndAllowed(FieldMetadata $field, mixed $value, array $rules): ?string |
| 435 | { |
| 436 | if (isset($rules['regex']) && is_string($rules['regex']) && !preg_match($rules['regex'], (string)$value)) { |
| 437 | return sprintf('Field "%s" has an invalid format.', $field->label); |
| 438 | } |
| 439 | |
| 440 | if ( |
| 441 | isset($rules['allowed_values']) |
| 442 | && is_array($rules['allowed_values']) |
| 443 | && !in_array($value, $rules['allowed_values'], true) |
| 444 | ) { |
| 445 | return sprintf('Field "%s" contains an invalid value.', $field->label); |
| 446 | } |
| 447 | |
| 448 | return null; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Checks whether a field value already exists in the table (unique constraint). |
| 453 | * |
| 454 | * @param FieldMetadata $field Field metadata for the unique check. |
| 455 | * @param mixed $value Value to check for uniqueness. |
| 456 | * @param string $table Target database table name. |
| 457 | * @param int|null $recordId Exclude this ID from the check (for updates). |
| 458 | * @return string|null Error message or null if unique. |
| 459 | */ |
| 460 | private function checkUnique( |
| 461 | FieldMetadata $field, |
| 462 | mixed $value, |
| 463 | string $table, |
| 464 | ?int $recordId |
| 465 | ): ?string { |
| 466 | $columnName = $field->fieldKey; |
| 467 | $sql = sprintf('SELECT COUNT(*) FROM `%s` WHERE `%s` = :value', $table, $columnName); |
| 468 | $params = [':value' => $value]; |
| 469 | |
| 470 | if ($recordId !== null) { |
| 471 | $sql .= ' AND `id` != :id'; |
| 472 | $params[':id'] = $recordId; |
| 473 | } |
| 474 | |
| 475 | $stmt = $this->pdo->prepare($sql); |
| 476 | $stmt->execute($params); |
| 477 | $count = (int) $stmt->fetchColumn(); |
| 478 | |
| 479 | if ($count > 0) { |
| 480 | return sprintf('Field "%s" value must be unique; this value already exists.', $field->label); |
| 481 | } |
| 482 | |
| 483 | return null; |
| 484 | } |
| 485 | } |