/**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state)
 {
     $config = $this->config('acquia_connector.settings');
     $identifier = $config->get('identifier');
     $key = $config->get('key');
     $subscription = $config->get('subscription_name');
     if (empty($identifier) && empty($key)) {
         return new RedirectResponse($this->url('acquia_connector.start'));
     }
     // Check our connection to the Acquia Network and validity of the credentials.
     try {
         $this->client->getSubscription($identifier, $key);
     } catch (ConnectorException $e) {
         $error_message = acquia_connector_connection_error_message($e->getCustomMessage('code', FALSE));
         $ssl_available = in_array('ssl', stream_get_transports(), TRUE) && !defined('ACQUIA_DEVELOPMENT_NOSSL') && $config->get('spi.ssl_verify');
         if (empty($error_message) && $ssl_available) {
             $error_message = $this->t('There was an error in validating your subscription credentials. You may want to try disabling SSL peer verification by setting the variable acquia_connector.settings:spi.ssl_verify to false.');
         }
         drupal_set_message($error_message, 'error', FALSE);
     }
     $form['connected'] = array('#markup' => $this->t('<h3>Connected to the Acquia Network</h3>'));
     if (!empty($subscription)) {
         $form['subscription'] = array('#markup' => $this->t('Subscription: @sub <a href="@url">change</a>', array('@sub' => $subscription, '@url' => $this->url('acquia_connector.setup'))));
     }
     $form['connection'] = array('#type' => 'fieldset', '#title' => $this->t('Acquia Subscription Settings'), '#collapsible' => FALSE);
     $form['migrate'] = array('#type' => 'details', '#title' => $this->t('Acquia Cloud Migrate'), '#description' => $this->t('Transfer a fully-functional copy of your site to Acquia Cloud. <a href="@url">Learn more</a>.', array('@url' => Url::fromUri('https://docs.acquia.com/cloud/site/import/connector')->getUri())), '#open' => !\Drupal::request()->server->has('AH_SITE_GROUP'));
     $form['migrate']['submit'] = array('#type' => 'submit', '#value' => $this->t('Migrate'), '#submit' => ['::submitMigrateGoForm']);
     $last_migration = \Drupal::state()->get('migrate.cloud', []);
     if (!empty($last_migration['db_file']) || !empty($last_migration['tar_file']) || !empty($last_migration['dir'])) {
         // Replace Upload button with Cleanup.
         unset($form['migrate']['#description']);
         $form['migrate']['#prefix'] = '<div class="messages error">' . $this->t('Temporary files were leftover from last migration attempt.') . '</div>';
         $form['migrate']['submit']['#value'] = $this->t('Cleanup files');
         $form['migrate']['submit']['#submit'] = ['::submitMigrateCleanupForm'];
     }
     // Help documentation is local unless the Help module is disabled.
     if ($this->moduleHandler->moduleExists('help')) {
         $help_url = \Drupal::url('help.page', array('name' => 'acquia_connector'));
     } else {
         $help_url = Url::fromUri('https://docs.acquia.com/network/install')->getUri();
     }
     if (!empty($identifier) && !empty($key)) {
         $ssl_available = in_array('ssl', stream_get_transports(), TRUE) && !defined('ACQUIA_DEVELOPMENT_NOSSL');
         $form['connection']['spi'] = array('#prefix' => '<div class="acquia-spi">', '#suffix' => '</div>', '#weight' => 0);
         $form['connection']['description']['#markup'] = $this->t('Allow collection and examination of the following items. <a href="@url">Learn more</a>.', array('@url' => $help_url));
         $form['connection']['description']['#weight'] = '-1';
         $form['connection']['spi']['admin_priv'] = array('#type' => 'checkbox', '#title' => $this->t('Admin privileges'), '#default_value' => $config->get('spi.admin_priv'));
         $form['connection']['spi']['send_node_user'] = array('#type' => 'checkbox', '#title' => $this->t('Nodes and users'), '#default_value' => $config->get('spi.send_node_user'));
         $form['connection']['spi']['send_watchdog'] = array('#type' => 'checkbox', '#title' => $this->t('Watchdog logs'), '#default_value' => $config->get('spi.send_watchdog'));
         $form['connection']['spi']['module_diff_data'] = array('#type' => 'checkbox', '#title' => t('Source code'), '#default_value' => (int) $config->get('spi.module_diff_data') && $ssl_available, '#description' => $this->t('Source code analysis requires a SSL connection and for your site to be publicly accessible. <a href="@url">Learn more</a>.', array('@url' => $help_url)), '#disabled' => !$ssl_available);
         $form['connection']['acquia_dynamic_banner'] = array('#type' => 'checkbox', '#title' => $this->t('Receive updates from Acquia Subscription'), '#default_value' => $config->get('spi.dynamic_banner'));
         $form['connection']['alter_variables'] = array('#type' => 'checkbox', '#title' => $this->t('Allow Insight to update list of approved variables.'), '#default_value' => (int) $config->get('spi.set_variables_override'), '#description' => $this->t('Insight can set variables on your site to recommended values at your approval, but only from a specific list of variables. Check this box to allow Insight to update the list of approved variables. <a href="@url">Learn more</a>.', array('@url' => $help_url)));
         $use_cron = $config->get('spi.use_cron');
         $form['connection']['use_cron'] = array('#type' => 'checkbox', '#title' => $this->t('Send via Drupal cron'), '#default_value' => $use_cron);
         $form['#attached']['library'][] = 'acquia_connector/acquia_connector.form';
         $key = sha1($this->privateKey->get());
         $url = Url::fromRoute('acquia_connector.send', [], ['query' => ['key' => $key], 'absolute' => TRUE])->toString();
         $form['connection']['use_cron_url'] = array('#type' => 'container', '#children' => $this->t('Enter the following URL in your server\'s crontab to send SPI data:<br /><em>@url</em>', array('@url' => $url)), '#states' => array('visible' => array(':input[name="use_cron"]' => array('checked' => FALSE))));
     }
     return parent::buildForm($form, $form_state);
 }