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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Attachment handler class. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Anatoliy Belsky <ab@php.net> |
| 12 | * @since 2009-08-21 |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @copyright 2009-2026 phpMyFAQ Team |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Attachment; |
| 21 | |
| 22 | use phpMyFAQ\Configuration; |
| 23 | use phpMyFAQ\Database; |
| 24 | use phpMyFAQ\Enums\AttachmentStorageType; |
| 25 | use phpMyFAQ\Language; |
| 26 | |
| 27 | /** |
| 28 | * Class AttachmentFactory |
| 29 | * |
| 30 | * @package phpMyFAQ\Attachment |
| 31 | */ |
| 32 | class AttachmentFactory |
| 33 | { |
| 34 | /** |
| 35 | * Default encryption key. |
| 36 | */ |
| 37 | private static ?string $defaultKey = null; |
| 38 | |
| 39 | /** |
| 40 | * Storage type. |
| 41 | */ |
| 42 | private static ?int $storageType = 0; |
| 43 | |
| 44 | /** |
| 45 | * File encryption is enabled. |
| 46 | */ |
| 47 | private static ?bool $encryptionEnabled = null; |
| 48 | |
| 49 | /** |
| 50 | * Create an attachment exemplar. |
| 51 | * |
| 52 | * @param int|null $attachmentId ID |
| 53 | * @param string|null $key Key |
| 54 | * @throws AttachmentException |
| 55 | */ |
| 56 | public static function create(?int $attachmentId = null, ?string $key = null): File |
| 57 | { |
| 58 | $return = match (self::$storageType) { |
| 59 | AttachmentStorageType::FILESYSTEM->value, AttachmentStorageType::S3->value => new File($attachmentId), |
| 60 | default => throw new AttachmentException('Unknown attachment storage type'), |
| 61 | }; |
| 62 | |
| 63 | /* |
| 64 | * If encryption isn't enabled, just ignoring all keys |
| 65 | */ |
| 66 | if (self::$encryptionEnabled) { |
| 67 | $key ??= self::$defaultKey; |
| 68 | } |
| 69 | |
| 70 | $return->setKey($key); |
| 71 | |
| 72 | return $return; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Fetch all record attachments. |
| 77 | * |
| 78 | * @param int $recordId ID of the record |
| 79 | * |
| 80 | * @throws AttachmentException |
| 81 | * @return File[] |
| 82 | */ |
| 83 | public static function fetchByRecordId(Configuration $configuration, int $recordId): array |
| 84 | { |
| 85 | $files = []; |
| 86 | |
| 87 | $sql = sprintf( |
| 88 | "SELECT id FROM %sfaqattachment WHERE record_id = %d AND record_lang = '%s'", |
| 89 | Database::getTablePrefix(), |
| 90 | $recordId, |
| 91 | Language::$language, |
| 92 | ); |
| 93 | |
| 94 | $result = $configuration->getDb()->fetchAll($configuration->getDb()->query($sql)); |
| 95 | |
| 96 | if ($result !== null && $result !== []) { |
| 97 | foreach ($result as $item) { |
| 98 | $files[] = self::create((int) $item->id); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return $files; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Fetch record attachments with pagination and sorting support. |
| 107 | * |
| 108 | * @param Configuration $configuration Configuration instance |
| 109 | * @param int $recordId ID of the record |
| 110 | * @param int $limit Number of items to fetch |
| 111 | * @param int $offset Starting offset |
| 112 | * @param string $sortField Field to sort by (id, filename, mime_type, filesize, created) |
| 113 | * @param string $sortOrder Sort order (ASC or DESC) |
| 114 | * |
| 115 | * @throws AttachmentException |
| 116 | * @return array Array of attachment data with filename and URL |
| 117 | */ |
| 118 | public static function fetchByRecordIdPaginated( |
| 119 | Configuration $configuration, |
| 120 | int $recordId, |
| 121 | int $limit = 25, |
| 122 | int $offset = 0, |
| 123 | string $sortField = 'id', |
| 124 | string $sortOrder = 'ASC', |
| 125 | ): array { |
| 126 | $files = []; |
| 127 | |
| 128 | // Validate sort field to prevent SQL injection |
| 129 | $allowedSortFields = ['id', 'filename', 'mime_type', 'filesize', 'created']; |
| 130 | if (!in_array($sortField, $allowedSortFields, strict: true)) { |
| 131 | $sortField = 'id'; |
| 132 | } |
| 133 | |
| 134 | // Validate sort order |
| 135 | $sortOrder = strtoupper($sortOrder) === 'DESC' ? 'DESC' : 'ASC'; |
| 136 | |
| 137 | $sql = sprintf( |
| 138 | "SELECT id FROM %sfaqattachment WHERE record_id = %d AND record_lang = '%s' ORDER BY %s %s LIMIT %d OFFSET %d", |
| 139 | Database::getTablePrefix(), |
| 140 | $recordId, |
| 141 | $configuration->getDb()->escape(Language::$language), |
| 142 | $sortField, |
| 143 | $sortOrder, |
| 144 | $limit, |
| 145 | $offset, |
| 146 | ); |
| 147 | |
| 148 | $result = $configuration->getDb()->fetchAll($configuration->getDb()->query($sql)); |
| 149 | |
| 150 | if ($result !== null && $result !== []) { |
| 151 | foreach ($result as $item) { |
| 152 | $attachment = self::create((int) $item->id); |
| 153 | $files[] = [ |
| 154 | 'filename' => $attachment->getFilename(), |
| 155 | 'url' => $configuration->getDefaultUrl() . $attachment->buildUrl(), |
| 156 | ]; |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | return $files; |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Count total number of attachments for a record. |
| 165 | * |
| 166 | * @param Configuration $configuration Configuration instance |
| 167 | * @param int $recordId ID of the record |
| 168 | * @return int Total count of attachments |
| 169 | */ |
| 170 | public static function countByRecordId(Configuration $configuration, int $recordId): int |
| 171 | { |
| 172 | $sql = sprintf( |
| 173 | "SELECT COUNT(*) as total FROM %sfaqattachment WHERE record_id = %d AND record_lang = '%s'", |
| 174 | Database::getTablePrefix(), |
| 175 | $recordId, |
| 176 | $configuration->getDb()->escape(Language::$language), |
| 177 | ); |
| 178 | |
| 179 | $result = $configuration->getDb()->query($sql); |
| 180 | $row = $configuration->getDb()->fetchObject($result); |
| 181 | |
| 182 | return $row instanceof \stdClass ? (int) ($row->total ?? 0) : 0; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Initializing the factory with global attachment settings. |
| 187 | * |
| 188 | * @param string $defaultKey Default key |
| 189 | * @param bool $encryptionEnabled Enabled encryption? |
| 190 | * @param int|null $storageType Optional storage type (defaults to filesystem) |
| 191 | */ |
| 192 | public static function init(string $defaultKey, bool $encryptionEnabled, ?int $storageType = null): void |
| 193 | { |
| 194 | if (null === self::$defaultKey) { |
| 195 | self::$defaultKey = $defaultKey; |
| 196 | } |
| 197 | |
| 198 | if (null === self::$encryptionEnabled) { |
| 199 | self::$encryptionEnabled = $encryptionEnabled; |
| 200 | } |
| 201 | |
| 202 | if ($storageType !== null) { |
| 203 | self::$storageType = $storageType; |
| 204 | } |
| 205 | } |
| 206 | } |