<?php

/**
 * @file
 * Pantheon configuration file.
 *
 * IMPORTANT NOTE:
 * Do not modify this file. This file is maintained by Pantheon.
 *
 * Site-specific modifications belong in settings.php, not this file. This file
 * may change in future releases and modifications would cause conflicts when
 * attempting to apply upstream updates.
 */

/**
 * Version of Pantheon files.
 *
 * This is a monotonically-increasing sequence number that is
 * incremented whenever a change is made to any Pantheon file.
 * Not changed if Drupal core is updated without any change to
 * any Pantheon file.
 *
 * The Pantheon version is included in the git tag only if a
 * release is made that includes changes to Pantheon files, but
 * not to any Drupal files.
 */
if (!defined("PANTHEON_VERSION")) {
  define("PANTHEON_VERSION", "3");
}

/**
 * Determine whether this is a preproduction or production environment, and
 * then load the pantheon services.yml file.  This file should be named either
 * 'pantheon-production-services.yml' (for 'live' or 'test' environments)
 * 'pantheon-preproduction-services.yml' (for 'dev' or multidev environments).
 */
$pantheon_services_file = __DIR__ . '/services.pantheon.preproduction.yml';
if (
  isset($_ENV['PANTHEON_ENVIRONMENT']) &&
  ( ($_ENV['PANTHEON_ENVIRONMENT'] == 'live') || ($_ENV['PANTHEON_ENVIRONMENT'] == 'test') )
) {
  $pantheon_services_file = __DIR__ . '/services.pantheon.production.yml';
}

if (file_exists($pantheon_services_file)) {
  $settings['container_yamls'][] = $pantheon_services_file;
}

/**
 * Set the default location for the 'private' directory.  Note
 * that this location is protected when running on the Pantheon
 * environment, but may be exposed if you migrate your site to
 * another environment.
 */
$settings['file_private_path'] = 'sites/default/files/private';

// Check to see if we are serving an installer page.
$is_installer_url = (strpos($_SERVER['SCRIPT_NAME'], '/core/install.php') === 0);

/**
 * Add the Drupal 8 CMI Directory Information directly in settings.php to make sure
 * Drupal knows all about that.
 *
 * Issue: https://github.com/pantheon-systems/drops-8/issues/2
 *
 * IMPORTANT SECURITY NOTE:  The configuration paths set up
 * below are secure when running your site on Pantheon.  If you
 * migrate your site to another environment on the public internet,
 * you should relocate these locations. See "After Installation"
 * at https://www.drupal.org/node/2431247
 *
 */
if ($is_installer_url) {
  $config_directories = array(
    CONFIG_SYNC_DIRECTORY => 'sites/default/files',
  );
}
else {
  $config_directories = array(
    CONFIG_SYNC_DIRECTORY => 'sites/default/config',
  );
}


/**
 * Allow Drupal 8 to Cleanly Redirect to Install.php For New Sites.
 *
 * Issue: https://github.com/pantheon-systems/drops-8/issues/3
 *
 * c.f. https://github.com/pantheon-systems/drops-8/pull/53
 *
 */
if (
  isset($_ENV['PANTHEON_ENVIRONMENT']) &&
  !$is_installer_url &&
  (isset($_SERVER['PANTHEON_DATABASE_STATE']) && ($_SERVER['PANTHEON_DATABASE_STATE'] == 'empty')) &&
  (empty($GLOBALS['install_state'])) &&
  (php_sapi_name() != "cli")
) {
  include_once __DIR__ . '/../../core/includes/install.core.inc';
  include_once __DIR__ . '/../../core/includes/install.inc';
  install_goto('core/install.php');
}

/**
 * Override the $databases variable to pass the correct Database credentials
 * directly from Pantheon to Drupal.
 *
 * Issue: https://github.com/pantheon-systems/drops-8/issues/8
 *
 */
if (isset($_SERVER['PRESSFLOW_SETTINGS'])) {
  $pressflow_settings = json_decode($_SERVER['PRESSFLOW_SETTINGS'], TRUE);
  foreach ($pressflow_settings as $key => $value) {
    // One level of depth should be enough for $conf and $database.
    if ($key == 'conf') {
      foreach($value as $conf_key => $conf_value) {
        $conf[$conf_key] = $conf_value;
      }
    }
    elseif ($key == 'databases') {
      // Protect default configuration but allow the specification of
      // additional databases. Also, allows fun things with 'prefix' if they
      // want to try multisite.
      if (!isset($databases) || !is_array($databases)) {
        $databases = array();
      }
      $databases = array_replace_recursive($databases, $value);
    }
    else {
      $$key = $value;
    }
  }
}

/**
 * Handle Hash Salt Value from Drupal
 *
 * Issue: https://github.com/pantheon-systems/drops-8/issues/10
 *
 */
if (isset($_ENV['PANTHEON_ENVIRONMENT'])) {
  $settings['hash_salt'] = $_ENV['DRUPAL_HASH_SALT'];
}

/**
 * Define appropriate location for tmp directory
 *
 * Issue: https://github.com/pantheon-systems/drops-8/issues/114
 *
 */
if (isset($_ENV['PANTHEON_ENVIRONMENT'])) {
  $config['system.file']['path']['temporary'] = $_SERVER['HOME'] .'/tmp';
}

/**
 * Place Twig cache files in the Pantheon rolling temporary directory.
 * A new rolling temporary directory is provided on every code deploy,
 * guaranteeing that fresh twig cache files will be generated every time.
 * Note that the rendered output generated from the twig cache files
 * are also cached in the database, so a cache clear is still necessary
 * to see updated results after a code deploy.
 */
if (isset($_ENV['PANTHEON_ROLLING_TMP']) && isset($_ENV['PANTHEON_DEPLOYMENT_IDENTIFIER'])) {
  // Relocate the compiled twig files to <binding-dir>/tmp/ROLLING/twig.
  // The location of ROLLING will change with every deploy.
  $settings['php_storage']['twig']['directory'] = $_ENV['PANTHEON_ROLLING_TMP'];
  // Ensure that the compiled twig templates will be rebuilt whenever the
  // deployment identifier changes.  Note that a cache rebuild is also necessary.
  $settings['deployment_identifier'] = $_ENV['PANTHEON_DEPLOYMENT_IDENTIFIER'];
  $settings['php_storage']['twig']['secret'] = $_ENV['DRUPAL_HASH_SALT'] . $settings['deployment_identifier'];
}

/**
 * Install the Pantheon Service Provider to hook Pantheon services into
 * Drupal 8. This service provider handles operations such as clearing the
 * Pantheon edge cache whenever the Drupal cache is rebuilt.
 */
if (isset($_ENV['PANTHEON_ENVIRONMENT'])) {
  $GLOBALS['conf']['container_service_providers']['PantheonServiceProvider'] = '\Pantheon\Internal\PantheonServiceProvider';
}

/**
 * "Trusted host settings" are not necessary on Pantheon; traffic will only
 * be routed to your site if the host settings match a domain configured for
 * your site in the dashboard.
 */
if (isset($_ENV['PANTHEON_ENVIRONMENT'])) {
  $settings['trusted_host_patterns'][] = '.*';
}

/**
 * The default list of directories that will be ignored by Drupal's file API.
 *
 * By default ignore node_modules and bower_components folders to avoid issues
 * with common frontend tools and recursive scanning of directories looking for
 * extensions.
 *
 * @see file_scan_directory()
 * @see \Drupal\Core\Extension\ExtensionDiscovery::scanDirectory()
 */
if (empty($settings['file_scan_ignore_directories'])) {
  $settings['file_scan_ignore_directories'] = [
    'node_modules',
    'bower_components',
  ];
}