<?php

/**
 * @file
 * Reroute Email installation and upgrade tasks.
 */

use Drupal\Core\Link;

/**
 * Implements hook_requirements().
 */
function reroute_email_requirements($phase) {
  $requirements = [];
  $reroute_config = \Drupal::config('reroute_email.settings');

  if ($phase === 'runtime' && $reroute_config->get(REROUTE_EMAIL_ENABLE)) {
    $settings = [
      '@link' => Link::createFromRoute(t('configure whitelist'), 'reroute_email.settings')->toString(),
      '%addresses' => $reroute_config->get(REROUTE_EMAIL_ADDRESS),
    ];

    if (empty($settings['%addresses'])) {
      $message = t('All outgoing emails (@link) would be aborted and recorded in the recent log entries (if enabled).', $settings);
    }
    else {
      $message = t('All outgoing emails (@link) would be rerouted to: %addresses', $settings);
    }

    $requirements['reroute_email'] = [
      'title' => t('Reroute Email'),
      'value' => $message,
      'severity' => REQUIREMENT_WARNING,
    ];
  }

  return $requirements;
}

/**
 * Implements hook_update_N().
 *
 * Now we have a separate fields for `Rerouting email addresses` and
 * `Whitelisted email addresses`. Previously all emails was rerouted
 * to the first email from `Rerouting email addresses`.
 */
function reroute_email_update_8001() {
  // We have changed config names.
  $old = [
    REROUTE_EMAIL_ENABLE => 'reroute_email_enable',
    REROUTE_EMAIL_ADDRESS => 'reroute_email_address',
    REROUTE_EMAIL_DESCRIPTION => 'reroute_email_enable_message',
  ];

  $config = \Drupal::configFactory()->getEditable('reroute_email.settings');

  // Do not update values if the user sets them manually already.
  // `Whitelisted addresses` is a new variable, so it couldn't exist before.
  if (NULL !== $config->get(REROUTE_EMAIL_WHITELIST)) {
    return;
  }

  // Update whitelisted email addresses value.
  $addresses = $config->get($old[REROUTE_EMAIL_ADDRESS]);
  $config->set(REROUTE_EMAIL_WHITELIST, $addresses);

  // Update rerouting email addresses value.
  $addresses = reroute_email_split_string($addresses);
  $config->set(REROUTE_EMAIL_ADDRESS, !empty($addresses[0]) ? $addresses[0] : '');

  // Update other configs to new names.
  $config->set(REROUTE_EMAIL_ENABLE, $config->get($old[REROUTE_EMAIL_ENABLE]));
  $config->set(REROUTE_EMAIL_DESCRIPTION, $config->get($old[REROUTE_EMAIL_DESCRIPTION]));

  // Remove old configs.
  $config->clear($old[REROUTE_EMAIL_ENABLE]);
  $config->clear($old[REROUTE_EMAIL_ADDRESS]);
  $config->clear($old[REROUTE_EMAIL_DESCRIPTION]);

  // Save configuration values.
  $config->save();

  // Return a message to the user.
  return t('Reroute email module updates completed successfully. Please visit configuration page to check.');
}