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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\Modules\Documents\Application\Service; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use App\Modules\Documents\Domain\Exception\DocumentNotFoundException; |
| 12 | use App\Modules\Documents\Domain\Model\DocumentVersion; |
| 13 | use PDO; |
| 14 | |
| 15 | /** |
| 16 | * Service managing document lifecycle versioning, snapshots, and rollback. |
| 17 | * |
| 18 | * @package App\Modules\Documents\Application\Service |
| 19 | */ |
| 20 | final readonly class DocumentVersioningService |
| 21 | { |
| 22 | private const string TABLE_DOCUMENTS = 'c_mod_documents_records'; |
| 23 | private const string TABLE_VERSIONS = 'c_mod_document_versions_records'; |
| 24 | private const string SQL_UPDATE = 'UPDATE '; |
| 25 | private const string DATE_FORMAT = 'Y-m-d H:i:s'; |
| 26 | |
| 27 | /** |
| 28 | * DocumentVersioningService constructor. |
| 29 | * |
| 30 | * @param PDO $pdo Database PDO connection. |
| 31 | */ |
| 32 | public function __construct(private PDO $pdo) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Creates an initial version (1.0) snapshot for a newly created document. |
| 38 | * |
| 39 | * @param int $documentId Unique document identifier. |
| 40 | * @param array<string, mixed> $data Initial document field values. |
| 41 | * @param int $userId User identifier creating the document. |
| 42 | * @return DocumentVersion Created version instance. |
| 43 | */ |
| 44 | public function createInitialVersion(int $documentId, array $data, int $userId = 1): DocumentVersion |
| 45 | { |
| 46 | return $this->insertVersion( |
| 47 | $documentId, |
| 48 | '1.0', |
| 49 | $data, |
| 50 | $userId, |
| 51 | ['type' => 'initial', 'tag' => 'Wersja 1.0', 'summary' => 'Utworzenie dokumentu (wersja poczatkowa)'] |
| 52 | ); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Creates a new version (minor or major) snapshot for an existing document. |
| 57 | * |
| 58 | * @param int $documentId Unique document identifier. |
| 59 | * @param string $versionType Type of version increment: 'minor' or 'major'. |
| 60 | * @param string|null $versionTag Optional semantic milestone label. |
| 61 | * @param string|null $changeNotes Summary of modifications made in this version. |
| 62 | * @param int $userId User authoring the new revision. |
| 63 | * @return DocumentVersion Created version entity. |
| 64 | * @throws DocumentNotFoundException If document does not exist. |
| 65 | */ |
| 66 | public function createNewVersion( |
| 67 | int $documentId, |
| 68 | string $versionType = 'minor', |
| 69 | ?string $versionTag = null, |
| 70 | ?string $changeNotes = null, |
| 71 | int $userId = 1 |
| 72 | ): DocumentVersion { |
| 73 | $document = $this->fetchDocumentData($documentId); |
| 74 | $currentVer = (string) ($document['current_version'] ?? '1.0'); |
| 75 | $nextVer = $this->computeNextVersion($currentVer, $versionType); |
| 76 | |
| 77 | $this->markAllVersionsNonCurrent($documentId); |
| 78 | |
| 79 | $version = $this->insertVersion( |
| 80 | $documentId, |
| 81 | $nextVer, |
| 82 | $document, |
| 83 | $userId, |
| 84 | ['type' => $versionType, 'tag' => $versionTag, 'summary' => $changeNotes] |
| 85 | ); |
| 86 | |
| 87 | $stmt = $this->pdo->prepare( |
| 88 | self::SQL_UPDATE . self::TABLE_DOCUMENTS . ' SET current_version = :ver WHERE id = :id' |
| 89 | ); |
| 90 | $stmt->execute([':ver' => $nextVer, ':id' => $documentId]); |
| 91 | |
| 92 | return $version; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Reverts document content and fields to a specific historical version snapshot. |
| 97 | * |
| 98 | * @param int $documentId Target document identifier. |
| 99 | * @param int $versionId Version identifier to rollback to. |
| 100 | * @param int $userId User executing the rollback. |
| 101 | * @return DocumentVersion Newly created rollback snapshot version. |
| 102 | * @throws DocumentNotFoundException If document or version is not found. |
| 103 | */ |
| 104 | public function rollbackToVersion(int $documentId, int $versionId, int $userId = 1): DocumentVersion |
| 105 | { |
| 106 | $stmt = $this->pdo->prepare( |
| 107 | 'SELECT snapshot_data, version_number FROM ' . self::TABLE_VERSIONS . |
| 108 | ' WHERE id = :vid AND document_id = :did' |
| 109 | ); |
| 110 | $stmt->execute([':vid' => $versionId, ':did' => $documentId]); |
| 111 | $row = $stmt->fetch(PDO::FETCH_ASSOC); |
| 112 | |
| 113 | if ($row === false) { |
| 114 | throw DocumentNotFoundException::forId($documentId); |
| 115 | } |
| 116 | |
| 117 | /** @var array<string, mixed> $snapshot */ |
| 118 | $snapshot = json_decode((string) $row['snapshot_data'], true) ?: []; |
| 119 | $targetVer = (string) $row['version_number']; |
| 120 | |
| 121 | $updateStmt = $this->pdo->prepare( |
| 122 | self::SQL_UPDATE . self::TABLE_DOCUMENTS . ' SET ' . |
| 123 | 'document_name = :name, description = :desc, ' . |
| 124 | 'expiry_date = :expiry, link_url = :link, extension = :ext ' . |
| 125 | 'WHERE id = :id' |
| 126 | ); |
| 127 | $updateStmt->execute([ |
| 128 | ':name' => $snapshot['document_name'] ?? 'Dokument', |
| 129 | ':desc' => $snapshot['description'] ?? null, |
| 130 | ':expiry' => $snapshot['expiry_date'] ?? null, |
| 131 | ':link' => $snapshot['link_url'] ?? null, |
| 132 | ':ext' => $snapshot['extension'] ?? null, |
| 133 | ':id' => $documentId, |
| 134 | ]); |
| 135 | |
| 136 | $summary = "Przywrocenie wersji {$targetVer}"; |
| 137 | |
| 138 | return $this->createNewVersion($documentId, 'minor', "Rollback do {$targetVer}", $summary, $userId); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Retrieves the complete version history for a given document. |
| 143 | * |
| 144 | * @param int $documentId Target document identifier. |
| 145 | * @return array<DocumentVersion> List of historical versions ordered newest first. |
| 146 | */ |
| 147 | public function getVersionHistory(int $documentId): array |
| 148 | { |
| 149 | $stmt = $this->pdo->prepare( |
| 150 | 'SELECT id, document_id, version_number, version_type, version_tag, ' . |
| 151 | 'change_summary, snapshot_data, is_current, created_by, created_at ' . |
| 152 | 'FROM ' . self::TABLE_VERSIONS . ' ' . |
| 153 | 'WHERE document_id = :did ORDER BY id DESC' |
| 154 | ); |
| 155 | $stmt->execute([':did' => $documentId]); |
| 156 | $rows = $stmt->fetchAll(PDO::FETCH_ASSOC); |
| 157 | |
| 158 | $versions = []; |
| 159 | foreach ($rows as $row) { |
| 160 | $versions[] = $this->hydrateVersion($row); |
| 161 | } |
| 162 | |
| 163 | return $versions; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * @param array<string, mixed> $r |
| 168 | */ |
| 169 | private function hydrateVersion(array $r): DocumentVersion |
| 170 | { |
| 171 | $snap = json_decode((string) ($r['snapshot_data'] ?? '{}'), true) ?: []; |
| 172 | return new DocumentVersion( |
| 173 | (int) $r['id'], |
| 174 | (int) $r['document_id'], |
| 175 | (string) $r['version_number'], |
| 176 | (string) $r['version_type'], |
| 177 | $r['version_tag'] !== null ? (string) $r['version_tag'] : null, |
| 178 | $r['change_summary'] !== null ? (string) $r['change_summary'] : null, |
| 179 | $snap, |
| 180 | (bool) $r['is_current'], |
| 181 | (int) $r['created_by'], |
| 182 | (string) $r['created_at'] |
| 183 | ); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Computes next semantic version number based on current version and increment type. |
| 188 | * |
| 189 | * @param string $current Current version string (e.g. '1.0' or '2.3'). |
| 190 | * @param string $type Increment type: 'minor' or 'major'. |
| 191 | * @return string Next version string (e.g. '1.1' or '2.0'). |
| 192 | */ |
| 193 | public function computeNextVersion(string $current, string $type): string |
| 194 | { |
| 195 | $parts = explode('.', $current); |
| 196 | $major = isset($parts[0]) && is_numeric($parts[0]) ? (int)$parts[0] : 1; |
| 197 | $minor = isset($parts[1]) && is_numeric($parts[1]) ? (int)$parts[1] : 0; |
| 198 | |
| 199 | if ($type === 'major') { |
| 200 | return ($major + 1) . '.0'; |
| 201 | } |
| 202 | |
| 203 | return $major . '.' . ($minor + 1); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Fetches current document row data as an associative array. |
| 208 | * |
| 209 | * @param int $documentId Target document identifier. |
| 210 | * @return array<string, mixed> Document data row. |
| 211 | * @throws DocumentNotFoundException If document is not found. |
| 212 | */ |
| 213 | private function fetchDocumentData(int $documentId): array |
| 214 | { |
| 215 | $stmt = $this->pdo->prepare( |
| 216 | 'SELECT id, document_name, description, expiry_date, link_url, extension, ' . |
| 217 | 'current_version FROM ' . self::TABLE_DOCUMENTS . ' WHERE id = :id LIMIT 1' |
| 218 | ); |
| 219 | $stmt->execute([':id' => $documentId]); |
| 220 | $row = $stmt->fetch(PDO::FETCH_ASSOC); |
| 221 | |
| 222 | if ($row === false) { |
| 223 | throw DocumentNotFoundException::forId($documentId); |
| 224 | } |
| 225 | |
| 226 | return $row; |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Marks all versions of a document as non-current. |
| 231 | * |
| 232 | * @param int $documentId Document identifier. |
| 233 | */ |
| 234 | private function markAllVersionsNonCurrent(int $documentId): void |
| 235 | { |
| 236 | $stmt = $this->pdo->prepare( |
| 237 | self::SQL_UPDATE . self::TABLE_VERSIONS . ' SET is_current = 0 WHERE document_id = :did' |
| 238 | ); |
| 239 | $stmt->execute([':did' => $documentId]); |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Inserts a new record into version history table. |
| 244 | * |
| 245 | * @param int $documentId Target document ID. |
| 246 | * @param string $versionNum Semantic version. |
| 247 | * @param array<string, mixed> $snapshot Snapshot payload. |
| 248 | * @param int $userId Author user ID. |
| 249 | * @param array{type?: string, tag?: ?string, summary?: ?string, is_current?: bool} $meta Metadata. |
| 250 | * @return DocumentVersion Created domain instance. |
| 251 | */ |
| 252 | private function insertVersion( |
| 253 | int $documentId, |
| 254 | string $versionNum, |
| 255 | array $snapshot, |
| 256 | int $userId, |
| 257 | array $meta = [] |
| 258 | ): DocumentVersion { |
| 259 | $type = (string) ($meta['type'] ?? 'minor'); |
| 260 | $tag = isset($meta['tag']) ? (string) $meta['tag'] : null; |
| 261 | $summary = isset($meta['summary']) ? (string) $meta['summary'] : null; |
| 262 | $isCurrent = (bool) ($meta['is_current'] ?? true); |
| 263 | |
| 264 | $json = json_encode($snapshot, JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR); |
| 265 | |
| 266 | $stmt = $this->pdo->prepare( |
| 267 | 'INSERT INTO ' . self::TABLE_VERSIONS . ' ' . |
| 268 | '(document_id, version_number, version_type, version_tag, change_summary, ' . |
| 269 | 'snapshot_data, is_current, created_by, created_at) ' . |
| 270 | 'VALUES (:did, :vnum, :vtype, :vtag, :vsum, :vsnap, :vcur, :cby, :cat)' |
| 271 | ); |
| 272 | $stmt->execute([ |
| 273 | ':did' => $documentId, |
| 274 | ':vnum' => $versionNum, |
| 275 | ':vtype' => $type, |
| 276 | ':vtag' => $tag, |
| 277 | ':vsum' => $summary, |
| 278 | ':vsnap' => $json, |
| 279 | ':vcur' => $isCurrent ? 1 : 0, |
| 280 | ':cby' => $userId, |
| 281 | ':cat' => date(self::DATE_FORMAT), |
| 282 | ]); |
| 283 | |
| 284 | $newId = (int) $this->pdo->lastInsertId(); |
| 285 | |
| 286 | return new DocumentVersion( |
| 287 | $newId, |
| 288 | $documentId, |
| 289 | $versionNum, |
| 290 | $type, |
| 291 | $tag, |
| 292 | $summary, |
| 293 | $snapshot, |
| 294 | $isCurrent, |
| 295 | $userId, |
| 296 | date(self::DATE_FORMAT) |
| 297 | ); |
| 298 | } |
| 299 | } |