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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * Fast Forward Development Tools for PHP projects. |
| 7 | * |
| 8 | * This file is part of fast-forward/dev-tools project. |
| 9 | * |
| 10 | * @author Felipe Sayão Lobato Abreu <github@mentordosnerds.com> |
| 11 | * @license https://opensource.org/licenses/MIT MIT License |
| 12 | * |
| 13 | * @see https://github.com/php-fast-forward/ |
| 14 | * @see https://github.com/php-fast-forward/dev-tools |
| 15 | * @see https://github.com/php-fast-forward/dev-tools/issues |
| 16 | * @see https://php-fast-forward.github.io/dev-tools/ |
| 17 | * @see https://datatracker.ietf.org/doc/html/rfc2119 |
| 18 | */ |
| 19 | |
| 20 | namespace FastForward\DevTools\Sync; |
| 21 | |
| 22 | use FastForward\DevTools\Filesystem\FinderFactoryInterface; |
| 23 | use FastForward\DevTools\Filesystem\FilesystemInterface; |
| 24 | use Psr\Log\LoggerInterface; |
| 25 | use Symfony\Component\Filesystem\Path; |
| 26 | |
| 27 | /** |
| 28 | * Synchronizes one packaged directory of symlinked entries into a consumer repository. |
| 29 | */ |
| 30 | class PackagedDirectorySynchronizer |
| 31 | { |
| 32 | /** |
| 33 | * Initializes the synchronizer with a filesystem and finder factory. |
| 34 | * |
| 35 | * @param FilesystemInterface $filesystem Filesystem instance for file operations |
| 36 | * @param FinderFactoryInterface $finderFactory Factory for locating packaged directories |
| 37 | * @param LoggerInterface $logger Logger for recording synchronization actions and decisions |
| 38 | */ |
| 39 | public function __construct( |
| 40 | private FilesystemInterface $filesystem, |
| 41 | private FinderFactoryInterface $finderFactory, |
| 42 | private LoggerInterface $logger, |
| 43 | ) {} |
| 44 | |
| 45 | /** |
| 46 | * Synchronizes packaged directory entries into the consumer repository. |
| 47 | * |
| 48 | * @param string $targetDir Absolute path to the consumer directory to populate |
| 49 | * @param string $packagePath Absolute path to the packaged directory to mirror |
| 50 | * @param string $directoryLabel Human-readable directory label used in log messages |
| 51 | * |
| 52 | * @return SynchronizeResult Result containing counts of created, preserved, and removed links |
| 53 | */ |
| 54 | public function synchronize(string $targetDir, string $packagePath, string $directoryLabel): SynchronizeResult |
| 55 | { |
| 56 | $result = new SynchronizeResult(); |
| 57 | |
| 58 | if (! $this->filesystem->exists($packagePath)) { |
| 59 | $this->logger->error('No packaged ' . $directoryLabel . ' found at: ' . $packagePath); |
| 60 | $result->markFailed(); |
| 61 | |
| 62 | return $result; |
| 63 | } |
| 64 | |
| 65 | if (! $this->filesystem->exists($targetDir)) { |
| 66 | $this->filesystem->mkdir($targetDir); |
| 67 | $this->logger->info('Created ' . $directoryLabel . ' directory.'); |
| 68 | } |
| 69 | |
| 70 | $finder = $this->finderFactory |
| 71 | ->create() |
| 72 | ->in($packagePath) |
| 73 | ->depth('== 0'); |
| 74 | |
| 75 | foreach ($finder as $packagedEntry) { |
| 76 | $entryName = $packagedEntry->getFilename(); |
| 77 | $targetLink = Path::makeAbsolute($entryName, $targetDir); |
| 78 | $sourcePath = $packagedEntry->getRealPath(); |
| 79 | $isDirectory = $packagedEntry->isDir(); |
| 80 | |
| 81 | $this->processLink($entryName, $targetLink, $sourcePath, $isDirectory, $result); |
| 82 | } |
| 83 | |
| 84 | return $result; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Routes an entry link to the appropriate handling method based on target state. |
| 89 | * |
| 90 | * @param string $entryName Name of the packaged entry being processed |
| 91 | * @param string $targetLink Absolute path where the symlink should exist |
| 92 | * @param string $sourcePath Absolute path to the packaged source directory |
| 93 | * @param SynchronizeResult $result Result tracker for reporting outcomes |
| 94 | * @param bool $isDirectory |
| 95 | */ |
| 96 | private function processLink( |
| 97 | string $entryName, |
| 98 | string $targetLink, |
| 99 | string $sourcePath, |
| 100 | bool $isDirectory, |
| 101 | SynchronizeResult $result, |
| 102 | ): void { |
| 103 | if (! $this->filesystem->exists($targetLink)) { |
| 104 | $this->createNewLink($entryName, $targetLink, $sourcePath, $isDirectory, $result); |
| 105 | |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | if (! $this->isSymlink($targetLink)) { |
| 110 | $this->preserveExistingNonSymlink($entryName, $result); |
| 111 | |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | $this->processExistingSymlink($entryName, $targetLink, $sourcePath, $isDirectory, $result); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Creates a new symlink pointing to the packaged entry. |
| 120 | * |
| 121 | * @param string $entryName Name identifying the entry |
| 122 | * @param string $targetLink Absolute path where the symlink will be created |
| 123 | * @param string $sourcePath Absolute path to the packaged directory |
| 124 | * @param SynchronizeResult $result Result object for tracking creation |
| 125 | * @param bool $isDirectory |
| 126 | */ |
| 127 | private function createNewLink( |
| 128 | string $entryName, |
| 129 | string $targetLink, |
| 130 | string $sourcePath, |
| 131 | bool $isDirectory, |
| 132 | SynchronizeResult $result, |
| 133 | ): void { |
| 134 | $relativeSourcePath = $this->normalizeRelativeSourcePath( |
| 135 | $this->filesystem->makePathRelative($sourcePath, $this->filesystem->getDirectory($targetLink)), |
| 136 | $isDirectory, |
| 137 | ); |
| 138 | |
| 139 | $this->filesystem->symlink($relativeSourcePath, $targetLink); |
| 140 | $this->logger->info('Created link: ' . $entryName . ' -> ' . $relativeSourcePath); |
| 141 | $result->addCreatedLink($entryName); |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Handles an existing non-symlink item at the target path. |
| 146 | * |
| 147 | * @param string $entryName Name of the entry with the conflicting item |
| 148 | * @param SynchronizeResult $result Result tracker for preserved items |
| 149 | */ |
| 150 | private function preserveExistingNonSymlink(string $entryName, SynchronizeResult $result): void |
| 151 | { |
| 152 | $this->logger->notice( |
| 153 | 'Existing non-symlink found: ' . $entryName . ' (keeping as is, skipping link creation)' |
| 154 | ); |
| 155 | $result->addPreservedLink($entryName); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Evaluates an existing symlink and determines whether to preserve or repair it. |
| 160 | * |
| 161 | * @param string $entryName Name of the entry with the existing symlink |
| 162 | * @param string $targetLink Absolute path to the existing symlink |
| 163 | * @param string $sourcePath Absolute path to the expected source directory |
| 164 | * @param SynchronizeResult $result Result tracker for preserved or removed links |
| 165 | * @param bool $isDirectory |
| 166 | */ |
| 167 | private function processExistingSymlink( |
| 168 | string $entryName, |
| 169 | string $targetLink, |
| 170 | string $sourcePath, |
| 171 | bool $isDirectory, |
| 172 | SynchronizeResult $result, |
| 173 | ): void { |
| 174 | $linkPath = $this->filesystem->readlink($targetLink, true); |
| 175 | |
| 176 | if (! $linkPath || ! $this->filesystem->exists($linkPath)) { |
| 177 | $this->repairBrokenLink($entryName, $targetLink, $sourcePath, $isDirectory, $result); |
| 178 | |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | $this->logger->notice('Preserved existing link: ' . $entryName); |
| 183 | $result->addPreservedLink($entryName); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Removes a broken symlink and creates a fresh one pointing to the current source. |
| 188 | * |
| 189 | * @param string $entryName Name of the entry with the broken symlink |
| 190 | * @param string $targetLink Absolute path to the broken symlink |
| 191 | * @param string $sourcePath Absolute path to the current packaged directory |
| 192 | * @param SynchronizeResult $result Result tracker for removed and created items |
| 193 | * @param bool $isDirectory |
| 194 | */ |
| 195 | private function repairBrokenLink( |
| 196 | string $entryName, |
| 197 | string $targetLink, |
| 198 | string $sourcePath, |
| 199 | bool $isDirectory, |
| 200 | SynchronizeResult $result, |
| 201 | ): void { |
| 202 | $this->filesystem->remove($targetLink); |
| 203 | $this->logger->notice('Existing link is broken: ' . $entryName . ' (removing and recreating)'); |
| 204 | $result->addRemovedBrokenLink($entryName); |
| 205 | |
| 206 | $this->createNewLink($entryName, $targetLink, $sourcePath, $isDirectory, $result); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Normalizes a relative symlink target emitted by Symfony path helpers. |
| 211 | * |
| 212 | * Files MUST NOT keep the trailing slash that directory-oriented path helpers |
| 213 | * may append, otherwise link creation treats them as non-existent directories. |
| 214 | * |
| 215 | * @param string $relativeSourcePath Relative path from the consumer target directory to the packaged source |
| 216 | * @param bool $isDirectory Whether the packaged source is a directory |
| 217 | * |
| 218 | * @return string Normalized relative symlink target |
| 219 | */ |
| 220 | private function normalizeRelativeSourcePath(string $relativeSourcePath, bool $isDirectory): string |
| 221 | { |
| 222 | if ($isDirectory) { |
| 223 | return $relativeSourcePath; |
| 224 | } |
| 225 | |
| 226 | return rtrim($relativeSourcePath, '/'); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Checks if a path is a symbolic link. |
| 231 | * |
| 232 | * @param string $path the target path |
| 233 | * |
| 234 | * @return bool whether the path is a symbolic link |
| 235 | */ |
| 236 | private function isSymlink(string $path): bool |
| 237 | { |
| 238 | return null !== $this->filesystem->readlink($path); |
| 239 | } |
| 240 | } |