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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace App\Domain\Document\Submission\Service; |
| 6 | |
| 7 | use App\Domain\Document\Submission\Data\AdminInvestorDocumentData; |
| 8 | use App\Domain\Document\Submission\Data\InvestorDocumentData; |
| 9 | use App\Domain\Document\Submission\Data\InvestorDocumentEventData; |
| 10 | use App\Domain\Document\Submission\Repository\InvestorDocumentRepository; |
| 11 | use App\Domain\Document\Type\Data\DocumentTypeData; |
| 12 | use App\Domain\Document\Type\Repository\DocumentTypeRepository; |
| 13 | use App\Domain\Exception\BadRequestException; |
| 14 | use App\Domain\Exception\ConflictException; |
| 15 | use App\Domain\Exception\NotFoundException; |
| 16 | use App\Domain\Storage\Service\FileStorageInterface; |
| 17 | use finfo; |
| 18 | use PDO; |
| 19 | use Psr\Http\Message\StreamInterface; |
| 20 | use Psr\Http\Message\UploadedFileInterface; |
| 21 | use RuntimeException; |
| 22 | use Throwable; |
| 23 | |
| 24 | /** |
| 25 | * Investor-side workflow for uploading documents. |
| 26 | * |
| 27 | * State machine on the parent investor_uploaded_documents row: |
| 28 | * |
| 29 | * (none) --upload--> pending_review |
| 30 | * pending_review --discard-> discarded (terminal) |
| 31 | * pending_review --accept--> accepted (terminal, admin) |
| 32 | * pending_review --reject--> rejected |
| 33 | * rejected --upload--> pending_review (re-upload, same id) |
| 34 | * rejected --discard-> discarded (terminal) |
| 35 | * accepted (terminal — investor cannot re-upload over a clean record) |
| 36 | * discarded (terminal — fresh upload creates a new parent row) |
| 37 | * |
| 38 | * Every transition writes an append-only event row, including the |
| 39 | * 'uploaded' event that carries file_storage_key and metadata. The |
| 40 | * "current file" for a document is the latest 'uploaded' event. |
| 41 | */ |
| 42 | final readonly class InvestorDocumentService |
| 43 | { |
| 44 | public function __construct( |
| 45 | private InvestorDocumentRepository $repository, |
| 46 | private DocumentTypeRepository $typeRepository, |
| 47 | private FileStorageInterface $storage, |
| 48 | private PDO $pdo, |
| 49 | ) {} |
| 50 | |
| 51 | /** |
| 52 | * @param int $investorId |
| 53 | * @return list<InvestorDocumentData> |
| 54 | */ |
| 55 | public function listForInvestor(int $investorId): array |
| 56 | { |
| 57 | return $this->repository->findByInvestorId($investorId); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * @return list<DocumentTypeData> |
| 62 | */ |
| 63 | public function listActiveTypes(): array |
| 64 | { |
| 65 | return $this->typeRepository->findActive(); |
| 66 | } |
| 67 | |
| 68 | public function uploadForInvestor( |
| 69 | int $investorId, |
| 70 | int $userId, |
| 71 | int $documentTypeId, |
| 72 | UploadedFileInterface $file, |
| 73 | ): InvestorDocumentData { |
| 74 | $type = $this->typeRepository->findById($documentTypeId); |
| 75 | if ($type === null || !$type->isActive) { |
| 76 | throw new NotFoundException('Document type not found or inactive.'); |
| 77 | } |
| 78 | |
| 79 | if ($file->getError() !== UPLOAD_ERR_OK) { |
| 80 | throw new BadRequestException(self::describeUploadError($file->getError())); |
| 81 | } |
| 82 | |
| 83 | $size = $file->getSize(); |
| 84 | if ($size === null || $size <= 0) { |
| 85 | throw new BadRequestException('Uploaded file is empty.'); |
| 86 | } |
| 87 | if ($size > $type->maxSizeBytes) { |
| 88 | throw new BadRequestException(sprintf( |
| 89 | 'File too large. Maximum %d bytes allowed for %s.', |
| 90 | $type->maxSizeBytes, |
| 91 | $type->label, |
| 92 | )); |
| 93 | } |
| 94 | |
| 95 | $stream = $file->getStream(); |
| 96 | $sniffedMime = $this->sniffMime($stream); |
| 97 | |
| 98 | if ($type->allowedMimeTypes !== [] && !in_array($sniffedMime, $type->allowedMimeTypes, true)) { |
| 99 | throw new BadRequestException(sprintf( |
| 100 | 'File type %s is not allowed for %s.', |
| 101 | $sniffedMime, |
| 102 | $type->label, |
| 103 | )); |
| 104 | } |
| 105 | |
| 106 | $sha256 = $this->hashStream($stream); |
| 107 | $originalName = (string)$file->getClientFilename(); |
| 108 | $extension = self::extractExtension($originalName); |
| 109 | |
| 110 | $existing = $this->repository->findOneByInvestorAndType($investorId, $documentTypeId); |
| 111 | if ($existing !== null && in_array($existing->status, ['pending_review', 'accepted'], true)) { |
| 112 | throw new ConflictException(sprintf( |
| 113 | 'A %s document is already on file (status: %s). Discard it before re-uploading.', |
| 114 | $type->label, |
| 115 | $existing->status, |
| 116 | )); |
| 117 | } |
| 118 | |
| 119 | $rewindable = $this->rewindable($stream); |
| 120 | $storageKey = $this->storage->store($rewindable, $extension); |
| 121 | |
| 122 | try { |
| 123 | $documentId = $this->pdo->inTransaction() |
| 124 | ? $this->persist($investorId, $userId, $documentTypeId, $existing, $storageKey, $originalName, $sniffedMime, $size, $sha256) |
| 125 | : $this->withTransaction(fn(): int => $this->persist( |
| 126 | $investorId, |
| 127 | $userId, |
| 128 | $documentTypeId, |
| 129 | $existing, |
| 130 | $storageKey, |
| 131 | $originalName, |
| 132 | $sniffedMime, |
| 133 | $size, |
| 134 | $sha256, |
| 135 | )); |
| 136 | } catch (Throwable $e) { |
| 137 | // Best-effort cleanup of the file we just wrote, since the DB |
| 138 | // record never landed. Swallow delete failures — re-throwing |
| 139 | // would mask the original cause. |
| 140 | try { |
| 141 | $this->storage->delete($storageKey); |
| 142 | } catch (Throwable) { |
| 143 | // ignore |
| 144 | } |
| 145 | throw $e; |
| 146 | } |
| 147 | |
| 148 | $reloaded = $this->repository->findByIdForInvestor($documentId, $investorId); |
| 149 | if ($reloaded === null) { |
| 150 | throw new RuntimeException('Document persisted but could not be reloaded.'); |
| 151 | } |
| 152 | |
| 153 | return $reloaded; |
| 154 | } |
| 155 | |
| 156 | public function discardForInvestor(int $investorId, int $userId, int $documentId): void |
| 157 | { |
| 158 | $document = $this->repository->findByIdForInvestor($documentId, $investorId); |
| 159 | if ($document === null) { |
| 160 | throw new NotFoundException('Document not found.'); |
| 161 | } |
| 162 | |
| 163 | if (!in_array($document->status, ['pending_review', 'rejected'], true)) { |
| 164 | throw new ConflictException(sprintf( |
| 165 | 'Cannot discard a document in status %s.', |
| 166 | $document->status, |
| 167 | )); |
| 168 | } |
| 169 | |
| 170 | $this->withTransaction(function () use ($documentId, $userId): void { |
| 171 | $this->repository->updateStatus($documentId, 'discarded'); |
| 172 | $this->repository->insertEvent( |
| 173 | documentId: $documentId, |
| 174 | eventType: 'discarded', |
| 175 | actorType: 'investor', |
| 176 | actorUserId: $userId, |
| 177 | ); |
| 178 | }); |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Resolve the current file event for a document the investor owns. |
| 183 | * Returns the event so callers can look up storage key + filename |
| 184 | * + mime type for the download response. |
| 185 | * @param int $investorId |
| 186 | * @param int $documentId |
| 187 | */ |
| 188 | public function getCurrentFileForInvestor(int $investorId, int $documentId): InvestorDocumentEventData |
| 189 | { |
| 190 | $document = $this->repository->findByIdForInvestor($documentId, $investorId); |
| 191 | if ($document === null) { |
| 192 | throw new NotFoundException('Document not found.'); |
| 193 | } |
| 194 | |
| 195 | $event = $this->repository->findCurrentFileEvent($documentId); |
| 196 | if ($event === null || $event->fileStorageKey === null) { |
| 197 | throw new NotFoundException('No file is currently on this document.'); |
| 198 | } |
| 199 | |
| 200 | return $event; |
| 201 | } |
| 202 | |
| 203 | public function getStream(string $storageKey): StreamInterface |
| 204 | { |
| 205 | return $this->storage->retrieve($storageKey); |
| 206 | } |
| 207 | |
| 208 | // ------------------------------------------------------------------ |
| 209 | // Admin surface |
| 210 | // ------------------------------------------------------------------ |
| 211 | |
| 212 | /** |
| 213 | * @return list<AdminInvestorDocumentData> |
| 214 | */ |
| 215 | public function listPendingForAdmin(): array |
| 216 | { |
| 217 | return $this->repository->findPending(); |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * @param int $investorId |
| 222 | * @return list<AdminInvestorDocumentData> |
| 223 | */ |
| 224 | public function listForInvestorAsAdmin(int $investorId): array |
| 225 | { |
| 226 | return $this->repository->findByInvestorIdForAdmin($investorId); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * @param int $documentId |
| 231 | * @return array{document: AdminInvestorDocumentData, events: list<InvestorDocumentEventData>} |
| 232 | */ |
| 233 | public function getForAdmin(int $documentId): array |
| 234 | { |
| 235 | $document = $this->repository->findByIdForAdmin($documentId); |
| 236 | if ($document === null) { |
| 237 | throw new NotFoundException('Document not found.'); |
| 238 | } |
| 239 | |
| 240 | $events = $this->repository->findEventsForDocument($documentId); |
| 241 | |
| 242 | return ['document' => $document, 'events' => $events]; |
| 243 | } |
| 244 | |
| 245 | public function getCurrentFileForAdmin(int $documentId): InvestorDocumentEventData |
| 246 | { |
| 247 | $document = $this->repository->findByIdForAdmin($documentId); |
| 248 | if ($document === null) { |
| 249 | throw new NotFoundException('Document not found.'); |
| 250 | } |
| 251 | |
| 252 | $event = $this->repository->findCurrentFileEvent($documentId); |
| 253 | if ($event === null || $event->fileStorageKey === null) { |
| 254 | throw new NotFoundException('No file is currently on this document.'); |
| 255 | } |
| 256 | |
| 257 | return $event; |
| 258 | } |
| 259 | |
| 260 | public function acceptForAdmin(int $documentId, int $adminUserId, ?string $notes): AdminInvestorDocumentData |
| 261 | { |
| 262 | $document = $this->repository->findByIdForAdmin($documentId); |
| 263 | if ($document === null) { |
| 264 | throw new NotFoundException('Document not found.'); |
| 265 | } |
| 266 | |
| 267 | if ($document->status !== 'pending_review') { |
| 268 | throw new ConflictException(sprintf( |
| 269 | 'Cannot accept a document in status %s.', |
| 270 | $document->status, |
| 271 | )); |
| 272 | } |
| 273 | |
| 274 | $cleanedNotes = $notes !== null && trim($notes) !== '' ? trim($notes) : null; |
| 275 | |
| 276 | $this->withTransaction(function () use ($documentId, $adminUserId, $cleanedNotes): void { |
| 277 | $this->repository->updateStatus($documentId, 'accepted'); |
| 278 | $this->repository->insertEvent( |
| 279 | documentId: $documentId, |
| 280 | eventType: 'accepted', |
| 281 | actorType: 'admin', |
| 282 | actorUserId: $adminUserId, |
| 283 | notes: $cleanedNotes, |
| 284 | ); |
| 285 | }); |
| 286 | |
| 287 | $reloaded = $this->repository->findByIdForAdmin($documentId); |
| 288 | if ($reloaded === null) { |
| 289 | throw new RuntimeException('Document was modified but could not be reloaded.'); |
| 290 | } |
| 291 | |
| 292 | return $reloaded; |
| 293 | } |
| 294 | |
| 295 | public function rejectForAdmin(int $documentId, int $adminUserId, string $notes): AdminInvestorDocumentData |
| 296 | { |
| 297 | $cleanedNotes = trim($notes); |
| 298 | if ($cleanedNotes === '') { |
| 299 | throw new BadRequestException('A rejection reason is required.'); |
| 300 | } |
| 301 | |
| 302 | $document = $this->repository->findByIdForAdmin($documentId); |
| 303 | if ($document === null) { |
| 304 | throw new NotFoundException('Document not found.'); |
| 305 | } |
| 306 | |
| 307 | if ($document->status !== 'pending_review') { |
| 308 | throw new ConflictException(sprintf( |
| 309 | 'Cannot reject a document in status %s.', |
| 310 | $document->status, |
| 311 | )); |
| 312 | } |
| 313 | |
| 314 | $this->withTransaction(function () use ($documentId, $adminUserId, $cleanedNotes): void { |
| 315 | $this->repository->updateStatus($documentId, 'rejected'); |
| 316 | $this->repository->insertEvent( |
| 317 | documentId: $documentId, |
| 318 | eventType: 'rejected', |
| 319 | actorType: 'admin', |
| 320 | actorUserId: $adminUserId, |
| 321 | notes: $cleanedNotes, |
| 322 | ); |
| 323 | }); |
| 324 | |
| 325 | $reloaded = $this->repository->findByIdForAdmin($documentId); |
| 326 | if ($reloaded === null) { |
| 327 | throw new RuntimeException('Document was modified but could not be reloaded.'); |
| 328 | } |
| 329 | |
| 330 | return $reloaded; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * @param ?InvestorDocumentData $existing |
| 335 | * @param int $investorId |
| 336 | * @param int $userId |
| 337 | * @param int $documentTypeId |
| 338 | * @param string $storageKey |
| 339 | * @param string $originalName |
| 340 | * @param string $mimeType |
| 341 | * @param int $size |
| 342 | * @param string $sha256 |
| 343 | */ |
| 344 | private function persist( |
| 345 | int $investorId, |
| 346 | int $userId, |
| 347 | int $documentTypeId, |
| 348 | ?InvestorDocumentData $existing, |
| 349 | string $storageKey, |
| 350 | string $originalName, |
| 351 | string $mimeType, |
| 352 | int $size, |
| 353 | string $sha256, |
| 354 | ): int { |
| 355 | if ($existing !== null && $existing->status === 'rejected') { |
| 356 | $documentId = $existing->documentId; |
| 357 | $this->repository->updateStatus($documentId, 'pending_review'); |
| 358 | } else { |
| 359 | $documentId = $this->repository->create( |
| 360 | $investorId, |
| 361 | $documentTypeId, |
| 362 | 'pending_review', |
| 363 | ); |
| 364 | } |
| 365 | |
| 366 | $this->repository->insertEvent( |
| 367 | documentId: $documentId, |
| 368 | eventType: 'uploaded', |
| 369 | actorType: 'investor', |
| 370 | actorUserId: $userId, |
| 371 | fileStorageKey: $storageKey, |
| 372 | originalFilename: $originalName !== '' ? $originalName : null, |
| 373 | mimeType: $mimeType, |
| 374 | sizeBytes: $size, |
| 375 | sha256: $sha256, |
| 376 | ); |
| 377 | |
| 378 | return $documentId; |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * @template T |
| 383 | * @param callable(): T $work |
| 384 | * @return T |
| 385 | */ |
| 386 | private function withTransaction(callable $work): mixed |
| 387 | { |
| 388 | $this->pdo->beginTransaction(); |
| 389 | try { |
| 390 | $result = $work(); |
| 391 | $this->pdo->commit(); |
| 392 | |
| 393 | return $result; |
| 394 | } catch (Throwable $e) { |
| 395 | if ($this->pdo->inTransaction()) { |
| 396 | $this->pdo->rollBack(); |
| 397 | } |
| 398 | throw $e; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | private function sniffMime(StreamInterface $stream): string |
| 403 | { |
| 404 | if ($stream->isSeekable()) { |
| 405 | $stream->rewind(); |
| 406 | } |
| 407 | $head = $stream->read(8192); |
| 408 | |
| 409 | $finfo = new finfo(FILEINFO_MIME_TYPE); |
| 410 | $detected = $finfo->buffer($head); |
| 411 | |
| 412 | return is_string($detected) && $detected !== '' |
| 413 | ? $detected |
| 414 | : 'application/octet-stream'; |
| 415 | } |
| 416 | |
| 417 | private function hashStream(StreamInterface $stream): string |
| 418 | { |
| 419 | if ($stream->isSeekable()) { |
| 420 | $stream->rewind(); |
| 421 | } |
| 422 | |
| 423 | $ctx = hash_init('sha256'); |
| 424 | while (!$stream->eof()) { |
| 425 | $chunk = $stream->read(8192); |
| 426 | if ($chunk === '') { |
| 427 | break; |
| 428 | } |
| 429 | hash_update($ctx, $chunk); |
| 430 | } |
| 431 | |
| 432 | return hash_final($ctx); |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Ensure the stream the storage layer receives is positioned at the |
| 437 | * start. We've read it twice already (sniff + hash) and storage |
| 438 | * needs a fresh pass. |
| 439 | * @param StreamInterface $stream |
| 440 | */ |
| 441 | private function rewindable(StreamInterface $stream): StreamInterface |
| 442 | { |
| 443 | if ($stream->isSeekable()) { |
| 444 | $stream->rewind(); |
| 445 | } |
| 446 | |
| 447 | return $stream; |
| 448 | } |
| 449 | |
| 450 | private static function extractExtension(string $filename): string |
| 451 | { |
| 452 | if ($filename === '') { |
| 453 | return ''; |
| 454 | } |
| 455 | |
| 456 | return pathinfo($filename, PATHINFO_EXTENSION); |
| 457 | } |
| 458 | |
| 459 | private static function describeUploadError(int $error): string |
| 460 | { |
| 461 | return match ($error) { |
| 462 | UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE => 'File exceeds the upload size limit.', |
| 463 | UPLOAD_ERR_PARTIAL => 'The file was only partially uploaded.', |
| 464 | UPLOAD_ERR_NO_FILE => 'No file was uploaded.', |
| 465 | UPLOAD_ERR_NO_TMP_DIR => 'Server is missing a temp directory for uploads.', |
| 466 | UPLOAD_ERR_CANT_WRITE => 'Server failed to write the upload to disk.', |
| 467 | UPLOAD_ERR_EXTENSION => 'A PHP extension blocked the upload.', |
| 468 | default => 'Upload failed.', |
| 469 | }; |
| 470 | } |
| 471 | } |