diff --git a/scripts/composer/ScriptHandler.php b/scripts/composer/ScriptHandler.php
new file mode 100644
index 00000000..a043c0f3
--- /dev/null
+++ b/scripts/composer/ScriptHandler.php
@@ -0,0 +1,98 @@
+<?php
+
+/**
+ * @file
+ * Contains \Sector\composer\ScriptHandler.
+ */
+
+namespace Sector\composer;
+
+use Composer\Script\Event;
+use Composer\Semver\Comparator;
+use Symfony\Component\Filesystem\Filesystem;
+
+class ScriptHandler {
+
+  protected static function getDrupalRoot($project_root) {
+    return $project_root . '/web';
+  }
+
+  public static function createRequiredFiles(Event $event) {
+    $fs = new Filesystem();
+    $root = static::getDrupalRoot(getcwd());
+
+    $dirs = [
+      'modules',
+      'profiles',
+      'themes',
+    ];
+
+    // Required for unit testing
+    foreach ($dirs as $dir) {
+      if (!$fs->exists($root . '/'. $dir)) {
+        $fs->mkdir($root . '/'. $dir);
+        $fs->touch($root . '/'. $dir . '/.gitkeep');
+      }
+    }
+
+    // Prepare the settings file for installation
+    if (!$fs->exists($root . '/sites/default/settings.php') and $fs->exists($root . '/sites/default/default.settings.php')) {
+      $fs->copy($root . '/sites/default/default.settings.php', $root . '/sites/default/settings.php');
+      $fs->chmod($root . '/sites/default/settings.php', 0666);
+      $event->getIO()->write("Create a sites/default/settings.php file with chmod 0666");
+    }
+
+    // Prepare the services file for installation
+    if (!$fs->exists($root . '/sites/default/services.yml') and $fs->exists($root . '/sites/default/default.services.yml')) {
+      $fs->copy($root . '/sites/default/default.services.yml', $root . '/sites/default/services.yml');
+      $fs->chmod($root . '/sites/default/services.yml', 0666);
+      $event->getIO()->write("Create a sites/default/services.yml file with chmod 0666");
+    }
+
+    // Create the files directory with chmod 0777
+    if (!$fs->exists($root . '/sites/default/files')) {
+      $oldmask = umask(0);
+      $fs->mkdir($root . '/sites/default/files', 0777);
+      umask($oldmask);
+      $event->getIO()->write("Create a sites/default/files directory with chmod 0777");
+    }
+  }
+
+  /**
+   * Checks if the installed version of Composer is compatible.
+   *
+   * Composer 1.0.0 and higher consider a `composer install` without having a
+   * lock file present as equal to `composer update`. We do not ship with a lock
+   * file to avoid merge conflicts downstream, meaning that if a project is
+   * installed with an older version of Composer the scaffolding of Drupal will
+   * not be triggered. We check this here instead of in drupal-scaffold to be
+   * able to give immediate feedback to the end user, rather than failing the
+   * installation after going through the lengthy process of compiling and
+   * downloading the Composer dependencies.
+   *
+   * @see https://github.com/composer/composer/pull/5035
+   */
+  public static function checkComposerVersion(Event $event) {
+    $composer = $event->getComposer();
+    $io = $event->getIO();
+
+    $version = $composer::VERSION;
+
+    // The dev-channel of composer uses the git revision as version number,
+    // try to the branch alias instead.
+    if (preg_match('/^[0-9a-f]{40}$/i', $version)) {
+      $version = $composer::BRANCH_ALIAS_VERSION;
+    }
+
+    // If Composer is installed through git we have no easy way to determine if
+    // it is new enough, just display a warning.
+    if ($version === '@package_version@' || $version === '@package_branch_alias_version@') {
+      $io->writeError('<warning>You are running a development version of Composer. If you experience problems, please update Composer to the latest stable version.</warning>');
+    }
+    elseif (Comparator::lessThan($version, '1.0.0')) {
+      $io->writeError('<error>Drupal-project requires Composer version 1.0.0 or higher. Please update your Composer before continuing</error>.');
+      exit(1);
+    }
+  }
+
+}