<?php

/**
 * @file
 * Install, update and uninstall functions for the mailchimp module.
 *
 */

/**
 * Implements hook_schema().
 */
function mailchimp_schema() {
  $schema['cache_mailchimp_user'] = drupal_get_schema_unprocessed('system', 'cache');
  $schema['cache_mailchimp_user']['description'] = 'Cache table for the MailChimp module to store a list subscribers member info.';

  return $schema;
}

/**
 * Implements hook_requirements().
 */
function mailchimp_requirements($phase) {
  $requirements = array();
  // Ensure translations don't break at install time:
  $t = get_t();

  if ($phase == 'update') {
    $path = drupal_get_path('module', 'libraries') . '/libraries.info';
    $info = drupal_parse_info_file($path);
    if (version_compare($info['version'], '7.x-2.0', '<')) {
      $requirements['mailchimp'] = array(
        'title' => $t('Mailchimp'),
        'value' => '7.x-2.x',
        'description' => $t('libraries 2.x is required for MailChimp 7.x-2.8 or higher.'),
        'severity' => REQUIREMENT_ERROR,
      );
      return $requirements;
    }
  }

  // Report Drupal version:
  if (in_array($phase, array('runtime', 'update'))) {
    $library = libraries_detect('mailchimp');
    $requirements['mailchimp'] = array(
      'title' => $t('MailChimp'),
    );

    if ($library['installed']) {
      $requirements['mailchimp'] += array(
        'value' => $library['version'],
        'description' => $t('The MailChimp MCAPI wrapper library is installed correctly.'),
        'severity' => REQUIREMENT_OK
      );
    }
    else {
      $requirements['mailchimp'] += array(
        'value' => $library['error'],
        'description' => $library['error message'],
        'severity' => REQUIREMENT_ERROR,
      );
    }
  }

  return $requirements;
}

/**
 * Implements hook_uninstall().
 */
function mailchimp_uninstall() {
  variable_del('mailchimp_api_key');
  variable_del('mailchimp_batch_limit');
  variable_del('mailchimp_use_secure');
}

/**
 * Implements hook_update_N().
 *   Create cache_mailchimp_user table and delete unused variables.
 */
function mailchimp_update_7201() {
  // create cache_mailchimp_user table
  db_create_table('cache_mailchimp_user', drupal_get_schema_unprocessed('mailchimp', 'cache_mailchimp_user'));

  // delete old unused variables
  variable_del('mailchimp_user_settings_title');
  variable_del('mailchimp_subscription_failure_message');
  variable_del('mailchimp_subscription_success_message');
  variable_del('mailchimp_unsubscription_failure_message');
  variable_del('mailchimp_unsubscription_success_message');
  variable_del('mailchimp_subscribe_page_title');
  variable_del('mailchimp_unsubscribe_page_description');
  variable_del('mailchimp_unsubscribe_page_title');
}

/**
 * Implements hook_update_N()
 *   Delete corrupt watchdog entries.
 */
function mailchimp_update_7202() {
  $query = 'DELETE FROM {watchdog} WHERE type = :type AND message = :message AND variables = :variables';

  db_query($query, array(
    ':type' => 'mailchimp',
    ':message' => 'Failed to load MailChimp PHP library. Please refer to the installation requirements.',
    ':variables' => serialize(3),
  ));
}