<?php

/**
 * @file
 * Installation file for the uc_stripe module.
 */


/**
 * Implements hook_requirements().
 */
function uc_stripe_requirements($phase) {
  $t = get_t();
  $has_curl = function_exists('curl_init');

  $requirements['uc_stripe_curl'] = array(
    'title' => $t('cURL'),
    'value' => $has_curl ? $t('Enabled') : $t('Not found'),
  );

  if (!$has_curl) {
    $requirements['uc_stripe_curl']['severity'] = REQUIREMENT_ERROR;
    $requirements['uc_stripe_curl']['description'] = $t("The Stripe API requires the PHP <a href='!curl_url'>cURL</a> library.", array('!curl_url' => 'http://php.net/manual/en/curl.setup.php'));
  }

  // libraries_info() doesn't work until the module is installed, so allow to be
  // installed without the library. Then warn at that point.
  if ($phase != 'install') {
    $php_api_version = _uc_stripe_load_library();
    $requirements['uc_stripe_api'] = array(
      'title' => $t('Stripe PHP Library'),
      'value' => $t('Version !version', array('!version' => $php_api_version)),
    );
    if (empty($php_api_version)) {
      $requirements['uc_stripe_api']['value'] = $t('Not installed or wrong version');
      $requirements['uc_stripe_api']['severity'] = REQUIREMENT_ERROR;
      $requirements['uc_stripe_api']['description'] = $t('Please install a compatible version of the Stripe PHP Library versions as described in the README.txt');
    }
  }


  $requirements['uc_stripe_keys'] = array(
    'title' => $t('Stripe API Keys'),
    'value' => $t('Configured'),
  );
  if ($phase == 'runtime' && !_uc_stripe_check_api_keys()) {
    $requirements['uc_stripe_keys']['title'] = $t('Stripe API Keys.');
    $requirements['uc_stripe_keys']['value'] = $t('Not configured');
    $requirements['uc_stripe_keys']['severity'] = REQUIREMENT_ERROR;
    $requirements['uc_stripe_keys']['description'] = $t('The Stripe API keys are not fully configured.');
  }

  // Make sure they don't enable the "Check credit"
  if ($phase == 'runtime' && variable_get('uc_credit_validate_numbers', FALSE)) {
    $requirements['uc_stripe_validate_numbers'] = array(
      'title' => t('Stripe Credit Card Validation'),
      'value' => t('Enabled'),
      'severity' => REQUIREMENT_ERROR,
      'description' => t("uc_credit's 'Validate credit card numbers at checkout' option must be disabled when using uc_stripe, as uc_credit never sees the card number."),
    );
  }

  return $requirements;
}

/**
 * Load the PHP API
 *
 * @return Stripe version number as string or FALSE if failed to load
 */
function _uc_stripe_load_library() {
  module_load_include('module', 'uc_stripe');

  if (($library = libraries_load('stripe')) && !empty($library['loaded']) && class_exists('\Stripe\Stripe')) {
    return \Stripe\Stripe::VERSION;
  }
  watchdog('uc_stripe', 'Stripe PHP Library not installed or wrong version');
  return FALSE;

}

/**
 * Implements hook_install().
 */
function uc_stripe_install() {
  // This turns ON the uc_recurring cron task to renew. We want this
  // ON because the renewal payments are handled by uc_recurring and NOT the stripe gateway
  variable_set('uc_recurring_trigger_renewals', TRUE);

  // Stripe does cc validation, so uc_credit must not... especially because
  // uc_credit gets a bogus cc number.
  variable_set('uc_credit_validate_numbers', FALSE);
}

/**
 * Implements hook_uninstall().
 */
function uc_stripe_uninstall() {
  variable_del('uc_stripe_authenticaiton_required_email');
}

/**
 * Implements hook_schema().
 */
function uc_stripe_schema() {
  $schema['uc_stripe_pending_auth'] = array(
    'description' => 'Ubercart Stripe - Track orders pending authentication',
    'fields' => array(
      'id' => array(
        'description' => 'id of entry',
        'type' => 'serial',
        'not null' => TRUE
      ),
      'order_id' => array(
        'description' => 'Order Id of pending order',
        'type' => 'int',
        'not null' => TRUE
      ),
      'rfee_id' => array(
        'description' => 'Recurring Fee Id of pending order',
        'type' => 'int',
        'not null' => TRUE
      ),
      'completed' => array(
        'description' => 'Competion status of this pending order',
      'type' => 'int',
      'not null' => TRUE
      ),
      'hash' => array (
        'description' => 'The unqiue has of order and payment id',
        'type' => 'varchar',
        'length' => '100',
        'not null' => TRUE
      ),
    ),
    'unique keys' => array(
      'hash' => array(
        'hash'
      )
    ),
    'primary key' => array('id'),
  );
  return $schema;
}

/**
 * Enable triggered renewals, as uc_recurring manages renewals with this version.
 */
function uc_stripe_update_7201(&$sandbox) {
  variable_set('uc_recurring_trigger_renewals', TRUE);
  variable_set('uc_credit_validate_numbers', FALSE);

  return 'Enabled uc_recurring triggered renewals (uc_recurring_trigger_renewals) and required uc_checkout_skip_review';
}

/**
 * Move customer IDs from uc_recurring_stripe into account
 */
function uc_stripe_update_7202(&$sandbox) {
  $ret = array();
  $sandbox['per_run'] = 100;  // users per run
  $sandbox['#finished'] = 0;

  if (db_table_exists('uc_recurring_stripe')) {
    if (!isset($sandbox['progress'])) {
      $sandbox['progress'] = 0;
      $sandbox['max'] = db_query('
        SELECT COUNT(DISTINCT(u.uid))
        FROM {users} u JOIN {uc_recurring_stripe} urs
        ON (u.uid = urs.uid)
        WHERE urs.active = 1
    ')->fetchField();
    }


    _uc_stripe_move_customer_id($sandbox);
    return "Updated {$sandbox['progress']} of {$sandbox['max']} uc_recurring_stripe rows into user objects";
  }
  else {
    return 'Old uc_recurring_stripe table did not exist, no action taken.';
  }
}

/**
 * Make sure cached library information is not used.
 */
function uc_stripe_update_7203(&$sandbox) {
  cache_clear_all('stripe', 'cache_libraries');
}

/**
 * Move customer ids from uc_recurring_stripe into user account
 */
function _uc_stripe_move_customer_id(&$sandbox) {

  // Find the users with stripe customer ids that are active
  $query = '
    SELECT DISTINCT(urs.uid)
    FROM {users} u JOIN {uc_recurring_stripe} urs
    ON (u.uid = urs.uid)
    WHERE urs.active = 1';
  $result = db_query_range($query, 0, $sandbox['per_run'],
    array(),
    array('fetch' => PDO::FETCH_ASSOC));

  foreach ($result as $item) {

    $sandbox['progress']++;
    $stripe_customer_id = db_query_range('
      SELECT urs.customer_id
      FROM {uc_recurring_stripe} urs
      WHERE urs.uid = :uid AND urs.active = 1
      ORDER BY urs.rfid DESC
      ', 0, 1, array(':uid' => $item['uid']))->fetchField();
    $account = user_load($item['uid']);
    // Set to inactive every subscription for this uid
    db_update('uc_recurring_stripe')
      ->fields(
        array('active' => 0)
      )
      ->condition('uid', $item['uid'])
      ->execute();

    if (empty($account->data['uc_stripe_customer_id'])) {
      user_save($account, array('data' => array('uc_stripe_customer_id' => $stripe_customer_id)));
    }
  }

  if ($sandbox['progress'] >= $sandbox['max'] || $result->rowCount() == 0) {
    $sandbox['#finished'] = 1;
  } else  {
    $sandbox['#finished'] = $sandbox['progress'] / $sandbox['max'];
  }
}

/**
 *
 * create table to track orders that require extra authentication verification.
 */
function uc_stripe_update_7301() {

  $table = array(
    'description' => 'Ubercart Stripe - Track orders pending authentication',
    'fields' => array(
      'id' => array(
        'description' => 'id of entry',
        'type' => 'serial',
        'not null' => TRUE
      ),
      'order_id' => array(
        'description' => 'Order Id of pending order',
        'type' => 'int',
        'not null' => TRUE
      ),
      'rfee_id' => array(
        'description' => 'Recurring Fee Id of pending order',
        'type' => 'int',
        'not null' => TRUE
      ),
      'completed' => array(
        'description' => 'Competion status of this pending order',
        'type' => 'int',
        'not null' => TRUE
      ),
      'hash' => array(
        'description' => 'The unqiue has of order and payment id',
        'type' => 'varchar',
        'length' => '100',
        'not null' => TRUE
      )
    ),
    'unique keys' => array(
      'hash' => array(
        'hash'
      )
    ),
    'primary key' => array(
      'id'
    )
  );

  db_create_table('uc_stripe_pending_auth', $table);
}