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| 1 | <?php |
| 2 | |
| 3 | // ╔════════════════════════════════════════════════════════════╗ |
| 4 | // ║ MIT Licence (#Expat) - https://opensource.org/licenses/MIT ║ |
| 5 | // ║ Copyright 2026 Frederic Poeydomenge <dyno@phexium.com> ║ |
| 6 | // ╚════════════════════════════════════════════════════════════╝ |
| 7 | |
| 8 | declare(strict_types=1); |
| 9 | |
| 10 | namespace Phexium\Plugin\Cache\Adapter; |
| 11 | |
| 12 | use DateInterval; |
| 13 | use DateTimeImmutable; |
| 14 | use Override; |
| 15 | use Phexium\Plugin\Cache\Internal\CacheEntry; |
| 16 | use Phexium\Plugin\Cache\Port\CacheInterface; |
| 17 | use Phexium\Plugin\Clock\Port\ClockInterface; |
| 18 | use RuntimeException; |
| 19 | |
| 20 | final readonly class FileCache implements CacheInterface |
| 21 | { |
| 22 | public function __construct( |
| 23 | private string $cacheDirectory, |
| 24 | private ClockInterface $clock, |
| 25 | ) { |
| 26 | if (!is_dir($this->cacheDirectory)) { |
| 27 | throw new RuntimeException(sprintf('Cache directory "%s" does not exist', $this->cacheDirectory)); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | #[Override] |
| 32 | public function get(string $key, mixed $default = null): mixed |
| 33 | { |
| 34 | if (!$this->has($key)) { |
| 35 | return $default; |
| 36 | } |
| 37 | |
| 38 | $entry = $this->readEntry($key); |
| 39 | |
| 40 | return $entry->value; |
| 41 | } |
| 42 | |
| 43 | #[Override] |
| 44 | public function set(string $key, mixed $value, DateInterval|int|null $ttl = null): bool |
| 45 | { |
| 46 | $ttlSeconds = $this->normalizeTtl($ttl); |
| 47 | |
| 48 | if ($ttlSeconds !== null && $ttlSeconds <= 0) { |
| 49 | $this->delete($key); |
| 50 | |
| 51 | return true; |
| 52 | } |
| 53 | |
| 54 | $expiresAt = null; |
| 55 | |
| 56 | if ($ttlSeconds !== null) { |
| 57 | $expiresAt = $this->clock->now()->getTimestamp() + $ttlSeconds; |
| 58 | } |
| 59 | |
| 60 | $entry = new CacheEntry($value, $expiresAt); |
| 61 | |
| 62 | $this->writeEntry($key, $entry); |
| 63 | |
| 64 | return true; |
| 65 | } |
| 66 | |
| 67 | #[Override] |
| 68 | public function has(string $key): bool |
| 69 | { |
| 70 | $filePath = $this->getFilePath($key); |
| 71 | |
| 72 | if (!file_exists($filePath)) { |
| 73 | return false; |
| 74 | } |
| 75 | |
| 76 | $entry = $this->readEntry($key); |
| 77 | |
| 78 | if (!$entry instanceof CacheEntry) { |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | if ($entry->expiresAt !== null && $entry->expiresAt <= $this->clock->now()->getTimestamp()) { |
| 83 | $this->deleteFile($filePath); |
| 84 | |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | return true; |
| 89 | } |
| 90 | |
| 91 | #[Override] |
| 92 | public function delete(string $key): bool |
| 93 | { |
| 94 | $filePath = $this->getFilePath($key); |
| 95 | |
| 96 | if (!file_exists($filePath)) { |
| 97 | return false; |
| 98 | } |
| 99 | |
| 100 | return $this->deleteFile($filePath); |
| 101 | } |
| 102 | |
| 103 | #[Override] |
| 104 | public function clear(): bool |
| 105 | { |
| 106 | foreach (glob($this->cacheDirectory.'/*.cache') as $file) { |
| 107 | $this->deleteFile($file); |
| 108 | } |
| 109 | |
| 110 | return true; |
| 111 | } |
| 112 | |
| 113 | #[Override] |
| 114 | public function getMultiple(iterable $keys, mixed $default = null): iterable |
| 115 | { |
| 116 | $result = []; |
| 117 | |
| 118 | foreach ($keys as $key) { |
| 119 | $result[$key] = $this->get($key, $default); |
| 120 | } |
| 121 | |
| 122 | return $result; |
| 123 | } |
| 124 | |
| 125 | #[Override] |
| 126 | public function setMultiple(iterable $values, DateInterval|int|null $ttl = null): bool |
| 127 | { |
| 128 | foreach ($values as $key => $value) { |
| 129 | $this->set($key, $value, $ttl); |
| 130 | } |
| 131 | |
| 132 | return true; |
| 133 | } |
| 134 | |
| 135 | #[Override] |
| 136 | public function deleteMultiple(iterable $keys): bool |
| 137 | { |
| 138 | foreach ($keys as $key) { |
| 139 | $this->delete($key); |
| 140 | } |
| 141 | |
| 142 | return true; |
| 143 | } |
| 144 | |
| 145 | private function getFilePath(string $key): string |
| 146 | { |
| 147 | return $this->cacheDirectory.'/'.md5($key).'.cache'; |
| 148 | } |
| 149 | |
| 150 | private function readEntry(string $key): ?CacheEntry |
| 151 | { |
| 152 | $filePath = $this->getFilePath($key); |
| 153 | $content = file_get_contents($filePath); |
| 154 | $data = json_decode($content, true); |
| 155 | |
| 156 | if (!is_array($data) || !array_key_exists('value', $data) || !array_key_exists('expiresAt', $data)) { |
| 157 | return null; |
| 158 | } |
| 159 | |
| 160 | return CacheEntry::fromArray($data); |
| 161 | } |
| 162 | |
| 163 | private function writeEntry(string $key, CacheEntry $entry): void |
| 164 | { |
| 165 | $filePath = $this->getFilePath($key); |
| 166 | $content = json_encode($entry->toArray(), JSON_THROW_ON_ERROR); |
| 167 | |
| 168 | file_put_contents($filePath, $content, LOCK_EX); |
| 169 | } |
| 170 | |
| 171 | private function deleteFile(string $filePath): bool |
| 172 | { |
| 173 | return unlink($filePath); |
| 174 | } |
| 175 | |
| 176 | private function normalizeTtl(DateInterval|int|null $ttl): ?int |
| 177 | { |
| 178 | if ($ttl instanceof DateInterval) { |
| 179 | $now = new DateTimeImmutable(); |
| 180 | |
| 181 | return $now->add($ttl)->getTimestamp() - $now->getTimestamp(); |
| 182 | } |
| 183 | |
| 184 | return $ttl; |
| 185 | } |
| 186 | } |