pantheon_config_deploy.module

<?php
/**
 * @file
 * Creates settings forms for Pantheon Configuration Deploy drush utilities
 */

/**
 * Implements hook_init().
 */
function pantheon_config_deploy_init() {
  if (file_exists(BACKDROP_ROOT . '/files/config/temp_active.true')) {
    include_once(BACKDROP_ROOT . '/core/modules/config/config.admin.inc');
    $config_statuses = config_get_statuses();
    $changed_config_count = count(array_filter($config_statuses));
    backdrop_set_message(t('<strong>Your site is using the writeable active configuration directory.</strong> Turn writeable configuration OFF after importing your version controlled configuration changes.'), "warning", FALSE);
  }
}

/**
 * Implements hook_menu().
 */
function pantheon_config_deploy_menu() {
  /*
  // Non-drush GUI can be revisited later
  $items['admin/pantheon-config/revert'] = array(
    'title' => 'Revert to version controlled configuration',
    'description' => 'Switch your site back to version controlled configuraiton and delete your temporary configuration setup.',
    'page callback' => 'backdrop_get_form',
    'page arguments' => array('pantheon_config_deploy_revert_form'),
    'access arguments' => array('pantheon config admin'),
  );
  */
  $items['admin/pantheon-config/settings'] = array(
    'title' => 'Pantheon Configuration Settings',
    'description' => 'Configure paths and scripts for Pantheon Configuration module',
    'page callback' => 'backdrop_get_form',
    'page arguments' => array('pantheon_config_deploy_settings_form'),
    'access arguments' => array('pantheon config admin'),
  );
  return $items;
}

/**
 * Implements hook_permission().
 */
function pantheon_config_deploy_permission() {
  $permissions['pantheon config admin'] = array(
    'title' => t('Administer Pantheon configuration management'),
    'restrict access' => TRUE,
  );
  return $permissions;
}

/**
 * Pantheon configuration settings form
 */
function pantheon_config_deploy_settings_form(array $form, array &$form_state) {
  $config = config('pantheon_config_deploy.settings');
  $writeable_config = $config->get('writeable_config');
  $scripts = $config->get('scripts');
  $web_root = $config->get('webroot');

  $form['writeable_config'] = array(
    '#type' => 'textfield',
    '#title' => 'Writeable configuration base directory',
    '#description' => 'A directory in your Pantheon filesystem where you want to manage a <em>temporary writeable configuration</em>, generally <em>files/config</em> with no leading slash',
    '#default_value' => $writeable_config ? $writeable_config : 'files/config',
    '#length' => 32,
  );
  $form['scripts'] = array(
    '#type' => 'textfield',
    '#title' => 'Pantheon webhook scripts directory',
    '#description' => 'The location of <em>before.php</em> and <em>after.php</em> for access via Pantheon webhooks, generally in <em>private/scripts</em> with no leading slash',
    '#default_value' => $scripts ? $scripts : 'private/scripts',
    '#length' => 32,
  );
  $form['webroot'] = array(
    '#type' => 'textfield',
    '#title' => 'Webroot fallback',
    '#description' => 'The project absolute webroot, generally <em>/code</em> with leading slash for Pantheon sites.',
    '#default_value' => $web_root ? $web_root : '/code',
    '#length' => 32,
  );
  $form['actions'] = array(
    '#type' => 'actions'
  );
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
    '#access' => TRUE,
  );
  return $form;
}

/**
 * Submit function for settings form
 */
function pantheon_config_deploy_settings_form_submit(array $form, array &$form_state) {
  $config = config('pantheon_config_deploy.settings');
  $config->set('writeable_config', $form_state['values']['writeable_config']);
  $config->set('scripts', $form_state['values']['scripts']);
  $config->set('webroot', $form_state['values']['webroot']);
  $config->save();
  backdrop_set_message(t("Pantheon Configuration Deployment settings have been saved."));
}

/**
 * Pantheon configuration revert form
 */
function pantheon_config_deploy_revert_form(array $form, array &$form_state) {
  $disabled = TRUE;
  $message = array('<p>This form is only useable when your site is in <em>importable configuration mode</em>.</p>');
  if (file_exists(BACKDROP_ROOT . '/files/config/temp_active.true')) {
    include_once(BACKDROP_ROOT . '/core/modules/config/config.admin.inc');
    $config_statuses = config_get_statuses();
    $changed_config_count = count(array_filter($config_statuses));
    $message = array('<p><strong>Your active site is in <em>importable configuration mode</em>.</strong> After importing, your should revert to version controlled configuration.</p>');
    $message[] = '<p><strong>Pending configuration changes: </strong>' . $changed_config_count . '</p>';
    $message[] = '<p>If you have pending configuration changes you probably want to <a href="/admin/config/development/configuration">import your configuration changes</a>. Then revert back to version controlled configuration below.</p>';
    $disabled = FALSE;
  }
  $form['#prefix'] = implode("\r\n", $message);
  $form['actions'] = array(
    '#type' => 'actions'
  );
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Revert to version controlled configuration'),
    '#access' => TRUE,
    '#disabled' => $disabled,
  );
  return $form;
}

/**
 * Configuration form submit.
 */
function pantheon_config_deploy_revert_form_submit(array $form, array &$form_state) {
  $web_root = BACKDROP_ROOT;
  if (file_exists($web_root . '/files/config')) {
    if (file_exists($web_root . '/files/config/temp_active.true')) {
      unlink($web_root . '/files/config/temp_active.true');
    }
    $scan_dir = scandir($web_root . '/files/config');
    foreach ($scan_dir as $dir_file) {
      if (strpos($dir_file, 'config_') === 0) {
        $config_scan = scandir($web_root . '/files/config/' . $dir_file);
        foreach ($config_scan as $config_file) {
          if (strpos(strrev($config_file), 'nosj.') === 0 || $config_file == '.htaccess') {
            unlink($web_root . '/files/config/' . $dir_file . '/' . $config_file);
            $count++;
            $found = TRUE;
          }
        }
        rmdir($web_root . '/files/config/' . $dir_file);
      }
    }
    rmdir($web_root . '/files/config');
  }
  if (!$found) {
    backdrop_set_message(t('No writeable configuration was found, no action was taken.'));
  }
  else {
    backdrop_set_message(t('Your writeable configuration has been removed, and your active configuration directory restored to default settings.'));
  }
}