Issue #3316721: Add script to convert this module into a core merge request

scripts/src/Converter.php

+<?php
+
+namespace Drupal\automatic_updates\CoreCovert;
+
+use Composer\Script\Event;
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * Converts the contrib module to core merge request.
+ *
+ * File usage:
+ *
+ * @code
+ * composer core-covert /path/to/core merge-request-branch
+ * @endcode
+ *
+ * The core clone should already have the core merge request locally.
+ */
+class Converter {
+
+  /**
+   * Prints message.
+   *
+   * @param string $msg
+   *   The message to print.
+   */
+  private static function info(string $msg): void {
+    print "\n$msg";
+  }
+
+  /**
+   * Converts the contrib module to core merge request.
+   *
+   * @param \Composer\Script\Event $event
+   *   The Composer event.
+   */
+  public static function doConvert(Event $event): void {
+    $args = $event->getArguments();
+    if (count($args) !== 2) {
+      throw new \Exception("This scripts 2 arguments, a directory that is a core clone and the branch.");
+    }
+    $core_dir = $args[0];
+    $core_branch = $args[1];
+    if (!is_dir($core_dir)) {
+      throw new \Exception("$core_dir is not a directory.");
+    }
+    $old_machine_name = 'automatic_updates';
+    $new_machine_name = 'auto_updates';
+
+    static::switchToBranches($core_dir, $core_branch);
+    self::info('Switched branches');
+    $fs = new Filesystem();
+
+    $core_module_path = static::getCoreModulePath($core_dir);
+    $package_manager_core_path = $core_dir . "/core/modules/package_manager";
+    // Remove old module.
+    $fs->remove($core_module_path);
+    self::info('Removed old core module');
+    $fs->remove($package_manager_core_path);
+    self::info("Removed package manager");
+
+    $fs->mirror(self::getContribDir(), $core_module_path);
+    self::info('Mirrored into core module');
+
+    // Remove unneeded.
+    $removals = [
+      'package_manager/package_manager.install',
+      'automatic_updates_9_3_shim',
+      'automatic_updates_extensions',
+      'drupalci.yml',
+      'README.md',
+      '.git',
+      'pcre.ini',
+      'composer.json',
+      '.gitattributes',
+      '.gitignore',
+      'DEVELOPING.md',
+      'scripts',
+      'dictionary.txt',
+    ];
+    $removals = array_map(function ($path) use ($core_module_path) {
+      return "$core_module_path/$path";
+    }, $removals);
+    $fs->remove($removals);
+    self::info('Remove not needed');
+
+    // Replace in file names and contents.
+    $replacements = [
+      $old_machine_name => $new_machine_name,
+      'AutomaticUpdates' => 'AutoUpdates',
+      "core_version_requirement: ^9.3" => "package: Core\nversion: VERSION\nlifecycle: experimental",
+    ];
+    foreach ($replacements as $search => $replace) {
+      static::renameFiles($core_module_path, $search, $replace);
+      static::replaceContents($core_module_path, $search, $replace);
+    }
+    self::info('Replacements done.');
+
+    static::removeLines($core_dir);
+    self::info('Remove unneeded lines');
+    $fs->rename("$core_module_path/package_manager", $core_dir . "/core/modules/package_manager");
+    self::info('Move package manager');
+
+    static::addWordsToDictionary($core_dir, self::getContribDir() . "/dictionary.txt");
+    self::info("Added to dictionary");
+    static::runCoreChecks($core_dir);
+    self::info('Ran core checks');
+    static::makeCommit($core_dir);
+    self::info('Make commit');
+    self::info("Done. Probably good but you should check before you push.");
+  }
+
+  /**
+   * Returns the path to the root of the contrib module.
+   *
+   * @return string
+   *   The full path to the root of the contrib module.
+   */
+  private static function getContribDir(): string {
+    return realpath(__DIR__ . '/../..');
+  }
+
+  /**
+   * Returns the path where the contrib module will be placed in Drupal Core.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   *
+   * @return string
+   *   The path where the contrib module will be placed in Drupal Core
+   */
+  private static function getCoreModulePath(string $core_dir): string {
+    return $core_dir . '/core/modules/auto_updates';
+  }
+
+  /**
+   * Replaces a string in the contents of the module files.
+   *
+   * @param string $core_module_path
+   *   The path of module in Drupal Core.
+   * @param string $search
+   *   The string to be replaced.
+   * @param string $replace
+   *   The string to replace.
+   */
+  private static function replaceContents(string $core_module_path, string $search, string $replace): void {
+    $files = static::getDirContents($core_module_path, TRUE);
+    foreach ($files as $file) {
+      $filePath = $file->getRealPath();
+      file_put_contents($filePath, str_replace($search, $replace, file_get_contents($filePath)));
+    }
+  }
+
+  /**
+   * Renames the module files.
+   *
+   * @param string $core_module_path
+   *   The path of module in Drupal Core.
+   * @param string $old_pattern
+   *   The old file name.
+   * @param string $new_pattern
+   *   The new file name.
+   */
+  private static function renameFiles(string $core_module_path, string $old_pattern, string $new_pattern): void {
+
+    $files = static::getDirContents($core_module_path);
+
+    // Keep a record of the files and directories to change.
+    // We will change all the files first, so we don't change the location of
+    // any files in the middle. This probably won't work if we had nested
+    // folders with the pattern on 2 folder levels, but we don't.
+    $filesToChange = [];
+    $dirsToChange = [];
+    foreach ($files as $file) {
+      $fileName = $file->getFilename();
+      if ($fileName === '.') {
+        $fullPath = $file->getPath();
+        $parts = explode('/', $fullPath);
+        $name = array_pop($parts);
+        $path = "/" . implode('/', $parts);
+      }
+      else {
+        $name = $fileName;
+        $path = $file->getPath();
+      }
+      if (strpos($name, $old_pattern) !== FALSE) {
+        $new_filename = str_replace($old_pattern, $new_pattern, $name);
+        if ($file->isFile()) {
+          $filesToChange[$file->getRealPath()] = $file->getPath() . "/$new_filename";
+        }
+        else {
+          // Store directories by path depth.
+          $depth = count(explode('/', $path));
+          $dirsToChange[$depth][$file->getRealPath()] = "$path/$new_filename";
+        }
+      }
+    }
+    foreach ($filesToChange as $old => $new) {
+      (new Filesystem())->rename($old, $new);
+    }
+    // Rename directories starting with the most nested to avoid renaming
+    // parents directories first.
+    krsort($dirsToChange);
+    foreach ($dirsToChange as $dirs) {
+      foreach ($dirs as $old => $new) {
+        (new Filesystem())->rename($old, $new);
+      }
+    }
+  }
+
+  /**
+   * Gets the contents of a directory.
+   *
+   * @param string $path
+   *   The path of the directory.
+   * @param bool $excludeDirs
+   *   (optional) If TRUE, all directories will be excluded. Defaults to FALSE.
+   *
+   * @return \SplFileInfo[]
+   *   Array of objects containing file information.
+   */
+  private static function getDirContents(string $path, bool $excludeDirs = FALSE): array {
+    $rii = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path));
+
+    $files = [];
+    /** @var \SplFileInfo $file */
+    foreach ($rii as $file) {
+      if ($excludeDirs && $file->isDir()) {
+        continue;
+      }
+      $files[] = $file;
+    }
+
+    return $files;
+  }
+
+  /**
+   * Ensures the git status is clean.
+   *
+   * @return bool
+   *   TRUE if git status is clean , otherwise returns a exception.
+   */
+  private static function ensureGitClean(): bool {
+    $status_output = shell_exec('git status');
+    if (strpos($status_output, 'nothing to commit, working tree clean') === FALSE) {
+      throw new \Exception("git not clean: " . $status_output);
+    }
+    return TRUE;
+  }
+
+  /**
+   * Gets the current git branch.
+   *
+   * @return string
+   *   The current git branch.
+   */
+  private static function getCurrentBranch(): string {
+    return trim(shell_exec('git rev-parse --abbrev-ref HEAD'));
+  }
+
+  /**
+   * Switches to the branches we need.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   * @param string $core_branch
+   *   The core merge request branch.
+   */
+  private static function switchToBranches(string $core_dir, string $core_branch): void {
+    static::switchToBranch('8.x-2.x');
+    chdir($core_dir);
+    static::switchToBranch($core_branch);
+  }
+
+  /**
+   * Switches to a branches and makes sure it is clean.
+   *
+   * @param string $branch
+   *   The branch to switch to.
+   */
+  private static function switchToBranch(string $branch): void {
+    static::ensureGitClean();
+    shell_exec("git checkout $branch");
+    if ($branch !== static::getCurrentBranch()) {
+      throw new \Exception("could not check $branch");
+    }
+  }
+
+  /**
+   * Makes commit in the root of Drupal Core.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   */
+  private static function makeCommit(string $core_dir): void {
+    chdir(self::getContribDir());
+    self::ensureGitClean();
+    $hash = trim(shell_exec('git rev-parse HEAD'));
+    $message = trim(shell_exec("git show -s --format='%s'"));
+    chdir($core_dir);
+    shell_exec('git add core');
+    shell_exec("git commit -m 'Contrib: $message - https://git.drupalcode.org/project/automatic_updates/-/commit/$hash'");
+  }
+
+  /**
+   * Adds new words to cspell dictionary.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   * @param string $dict_file_to_merge
+   *   The path to the dictionary file with additional words.
+   */
+  private static function addWordsToDictionary(string $core_dir, string $dict_file_to_merge): void {
+    if (!file_exists($dict_file_to_merge)) {
+      throw new \LogicException(sprintf('%s does not exist', $dict_file_to_merge));
+    }
+    $dict_file = $core_dir . '/core/misc/cspell/dictionary.txt';
+    $contents = file_get_contents($dict_file);
+    $words = explode("\n", $contents);
+    $words = array_filter($words);
+    $new_words = explode("\n", file_get_contents($dict_file_to_merge));
+    $words = array_merge($words, $new_words);
+    $words = array_unique($words);
+    asort($words);
+    file_put_contents($dict_file, implode("\n", $words));
+  }
+
+  /**
+   * Runs code quality checks.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   */
+  private static function runCoreChecks(string $core_dir): void {
+    chdir($core_dir);
+    $result = NULL;
+    system(' sh ./core/scripts/dev/commit-code-check.sh --branch 9.5.x', $result);
+    if ($result !== 0) {
+      print "😭commit-code-check.sh failed";
+      exit(1);
+    }
+    print "🎉 commit-code-check.sh passed!";
+  }
+
+  /**
+   * Removes lines from the module based on a starting and ending token
+   * These are lines that are not need in core at all.
+   *
+   * @param string $core_dir
+   *   The path to the root of Drupal Core.
+   */
+  private static function removeLines(string $core_dir): void {
+    $files = static::getDirContents(static::getCoreModulePath($core_dir), TRUE);
+    foreach ($files as $file) {
+      $filePath = $file->getRealPath();
+      $contents = file_get_contents($filePath);
+      $lines = explode("\n", $contents);
+      $skip = FALSE;
+      $newLines = [];
+      foreach ($lines as $line) {
+        if (strpos($line, '// BEGIN: DELETE FROM CORE MERGE REQUEST')) {
+          if ($skip) {
+            throw new \Exception("Already found begin");
+          }
+          $skip = TRUE;
+        }
+        if (!$skip) {
+          $newLines[] = $line;
+        }
+        if (strpos($line, '// END: DELETE FROM CORE MERGE REQUEST')) {
+          if (!$skip) {
+            throw new \Exception("Didn't find matching begin");
+          }
+          $skip = FALSE;
+        }
+      }
+      if ($skip) {
+        throw new \Exception("Didn't find ending token");
+      }
+      file_put_contents($filePath, implode("\n", $newLines));
+    }
+  }
+
+}