<?php
/*
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC. All rights reserved.                        |
 |                                                                    |
 | This work is published under the GNU AGPLv3 license with some      |
 | permitted exceptions and without any warranty. For full license    |
 | and copyright information, see https://civicrm.org/licensing       |
 +--------------------------------------------------------------------+
 */

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC https://civicrm.org/licensing
 */
class CRM_Core_Payment_AuthorizeNetIPN extends CRM_Core_Payment_BaseIPN {

  /**
   * Constructor function.
   *
   * @param array $inputData
   *   contents of HTTP REQUEST.
   *
   * @throws CRM_Core_Exception
   */
  public function __construct($inputData) {
    $this->setInputParameters($inputData);
    parent::__construct();
  }

  /**
   * @param string $component
   *
   * @return bool|void
   */
  public function main($component = 'contribute') {
    try {
      //we only get invoice num as a key player from payment gateway response.
      //for ARB we get x_subscription_id and x_subscription_paynum
      $x_subscription_id = $this->retrieve('x_subscription_id', 'String');
      if (!$x_subscription_id) {
        // Presence of the id means it is approved.
        return TRUE;
      }
      $ids = $objects = $input = [];

      $input['component'] = $component;

      // load post vars in $input
      $this->getInput($input, $ids);

      // load post ids in $ids
      $this->getIDs($ids, $input);

      // Attempt to get payment processor ID from URL
      if (!empty($this->_inputParameters['processor_id'])) {
        $paymentProcessorID = $this->_inputParameters['processor_id'];
      }
      else {
        // This is an unreliable method as there could be more than one instance.
        // Recommended approach is to use the civicrm/payment/ipn/xx url where xx is the payment
        // processor id & the handleNotification function (which should call the completetransaction api & by-pass this
        // entirely). The only thing the IPN class should really do is extract data from the request, validate it
        // & call completetransaction or call fail? (which may not exist yet).
        Civi::log()->warning('Unreliable method used to get payment_processor_id for AuthNet IPN - this will cause problems if you have more than one instance');
        $paymentProcessorTypeID = CRM_Core_DAO::getFieldValue('CRM_Financial_DAO_PaymentProcessorType',
          'AuthNet', 'id', 'name'
        );
        $paymentProcessorID = (int) civicrm_api3('PaymentProcessor', 'getvalue', [
          'is_test' => 0,
          'options' => ['limit' => 1],
          'payment_processor_type_id' => $paymentProcessorTypeID,
          'return' => 'id',
        ]);
      }

      // Check if the contribution exists
      // make sure contribution exists and is valid
      $contribution = new CRM_Contribute_BAO_Contribution();
      $contribution->id = $ids['contribution'];
      if (!$contribution->find(TRUE)) {
        throw new CRM_Core_Exception('Failure: Could not find contribution record for ' . (int) $contribution->id, NULL, ['context' => "Could not find contribution record: {$contribution->id} in IPN request: " . print_r($input, TRUE)]);
      }
      $ids['contributionPage'] = $contribution->contribution_page_id;

      // make sure contact exists and is valid
      // use the contact id from the contribution record as the id in the IPN may not be valid anymore.
      $contact = new CRM_Contact_BAO_Contact();
      $contact->id = $contribution->contact_id;
      $contact->find(TRUE);
      if ($contact->id != $ids['contact']) {
        // If the ids do not match then it is possible the contact id in the IPN has been merged into another contact which is why we use the contact_id from the contribution
        CRM_Core_Error::debug_log_message("Contact ID in IPN {$ids['contact']} not found but contact_id found in contribution {$contribution->contact_id} used instead");
        echo "WARNING: Could not find contact record: {$ids['contact']}<p>";
        $ids['contact'] = $contribution->contact_id;
      }

      if (!empty($ids['contributionRecur'])) {
        $contributionRecur = new CRM_Contribute_BAO_ContributionRecur();
        $contributionRecur->id = $ids['contributionRecur'];
        if (!$contributionRecur->find(TRUE)) {
          CRM_Core_Error::debug_log_message("Could not find contribution recur record: {$ids['ContributionRecur']} in IPN request: " . print_r($input, TRUE));
          echo "Failure: Could not find contribution recur record: {$ids['ContributionRecur']}<p>";
          return FALSE;
        }
      }

      $objects['contact'] = &$contact;
      $objects['contribution'] = &$contribution;

      $this->loadObjects($input, $ids, $objects, TRUE, $paymentProcessorID);

      if (!empty($ids['paymentProcessor']) && $objects['contributionRecur']->payment_processor_id != $ids['paymentProcessor']) {
        Civi::log()->warning('Payment Processor does not match the recurring processor id.', ['civi.tag' => 'deprecated']);
      }

      if ($component == 'contribute' && $ids['contributionRecur']) {
        // check if first contribution is completed, else complete first contribution
        $first = TRUE;
        if ($objects['contribution']->contribution_status_id == 1) {
          $first = FALSE;
          //load new contribution object if required.
          // create a contribution and then get it processed
          $contribution = new CRM_Contribute_BAO_Contribution();
          $contribution->contact_id = $ids['contact'];
          $contribution->financial_type_id = $objects['contributionType']->id;
          $contribution->contribution_page_id = $ids['contributionPage'];
          $contribution->contribution_recur_id = $ids['contributionRecur'];
          $contribution->receive_date = $input['receive_date'];
          $contribution->currency = $objects['contribution']->currency;
          $contribution->amount_level = $objects['contribution']->amount_level;
          $contribution->address_id = $objects['contribution']->address_id;
          $contribution->campaign_id = $objects['contribution']->campaign_id;
          $contribution->_relatedObjects = $objects['contribution']->_relatedObjects;

          $objects['contribution'] = &$contribution;
        }
        $input['payment_processor_id'] = $paymentProcessorID;
        return $this->recur($input, [
          'related_contact' => $ids['related_contact'] ?? NULL,
          'participant' => !empty($objects['participant']) ? $objects['participant']->id : NULL,
          'contributionRecur' => !empty($objects['contributionRecur']) ? $objects['contributionRecur']->id : NULL,
          'contact' => $ids['contact'] ?? NULL,
          'contributionPage' => $ids['contributionPage'] ?? NULL,
        ], $objects['contributionRecur'], $objects['contribution'], $first);
      }

      return TRUE;
    }
    catch (CRM_Core_Exception $e) {
      Civi::log()->debug($e->getMessage());
      echo 'Invalid or missing data';
    }
  }

  /**
   * @param array $input
   * @param array $ids
   * @param \CRM_Contribute_BAO_ContributionRecur $recur
   * @param \CRM_Contribute_BAO_Contribution $contribution
   * @param bool $first
   *
   * @return bool
   * @throws \CRM_Core_Exception
   * @throws \CiviCRM_API3_Exception
   */
  public function recur($input, $ids, $recur, $contribution, $first) {

    // do a subscription check
    if ($recur->processor_id != $input['subscription_id']) {
      throw new CRM_Core_Exception('Unrecognized subscription.');
    }

    $contributionStatus = CRM_Contribute_PseudoConstant::contributionStatus(NULL, 'name');

    $now = date('YmdHis');

    $contribution->invoice_id = md5(uniqid(rand(), TRUE));
    $contribution->total_amount = $input['amount'];
    $contribution->trxn_id = $input['trxn_id'];

    $isFirstOrLastRecurringPayment = FALSE;
    if ($input['response_code'] == 1) {
      // Approved
      if ($first) {
        $recur->start_date = $now;
        $recur->trxn_id = $recur->processor_id;
        $isFirstOrLastRecurringPayment = CRM_Core_Payment::RECURRING_PAYMENT_START;
      }

      if (($recur->installments > 0) &&
        ($input['subscription_paynum'] >= $recur->installments)
      ) {
        // this is the last payment
        $recur->end_date = $now;
        $isFirstOrLastRecurringPayment = CRM_Core_Payment::RECURRING_PAYMENT_END;
        // This end date update should occur in ContributionRecur::updateOnNewPayment
        // testIPNPaymentRecurNoReceipt has test cover.
        $recur->save();
      }
    }
    else {
      // Declined
      // failed status
      $recur->contribution_status_id = array_search('Failed', $contributionStatus);
      $recur->cancel_date = $now;
      $recur->save();

      $message = ts('Subscription payment failed - %1', [1 => htmlspecialchars($input['response_reason_text'])]);
      CRM_Core_Error::debug_log_message($message);

      // the recurring contribution has declined a payment or has failed
      // so we just fix the recurring contribution and not change any of
      // the existing contributions
      // CRM-9036
      return TRUE;
    }

    // check if contribution is already completed, if so we ignore this ipn
    if ($contribution->contribution_status_id == 1) {
      CRM_Core_Error::debug_log_message("Returning since contribution has already been handled.");
      echo 'Success: Contribution has already been handled<p>';
      return TRUE;
    }

    CRM_Contribute_BAO_Contribution::completeOrder($input, $ids, $contribution);

    if ($isFirstOrLastRecurringPayment) {
      //send recurring Notification email for user
      CRM_Contribute_BAO_ContributionPage::recurringNotify(TRUE,
        $ids['contact'],
        $ids['contributionPage'],
        $recur,
        (bool) $this->getMembershipID($contribution->id, $recur->id)
      );
    }
  }

  /**
   * Get the input from passed in fields.
   *
   * @param array $input
   *
   * @throws \CRM_Core_Exception
   */
  public function getInput(&$input) {
    $input['amount'] = $this->retrieve('x_amount', 'String');
    $input['subscription_id'] = $this->retrieve('x_subscription_id', 'Integer');
    $input['response_code'] = $this->retrieve('x_response_code', 'Integer');
    $input['MD5_Hash'] = $this->retrieve('x_MD5_Hash', 'String', FALSE, '');
    $input['response_reason_code'] = $this->retrieve('x_response_reason_code', 'String', FALSE);
    $input['response_reason_text'] = $this->retrieve('x_response_reason_text', 'String', FALSE);
    $input['subscription_paynum'] = $this->retrieve('x_subscription_paynum', 'Integer', FALSE, 0);
    $input['trxn_id'] = $this->retrieve('x_trans_id', 'String', FALSE);
    $input['receive_date'] = $this->retrieve('receive_date', 'String', FALSE, date('YmdHis', strtotime('now')));

    if ($input['trxn_id']) {
      $input['is_test'] = 0;
    }
    // Only assume trxn_id 'should' have been returned for success.
    // Per CRM-17611 it would also not be passed back for a decline.
    elseif ($input['response_code'] == 1) {
      $input['is_test'] = 1;
      $input['trxn_id'] = md5(uniqid(rand(), TRUE));
    }

    $billingID = CRM_Core_BAO_LocationType::getBilling();
    $params = [
      'first_name' => 'x_first_name',
      'last_name' => 'x_last_name',
      "street_address-{$billingID}" => 'x_address',
      "city-{$billingID}" => 'x_city',
      "state-{$billingID}" => 'x_state',
      "postal_code-{$billingID}" => 'x_zip',
      "country-{$billingID}" => 'x_country',
      "email-{$billingID}" => 'x_email',
    ];
    foreach ($params as $civiName => $resName) {
      $input[$civiName] = $this->retrieve($resName, 'String', FALSE);
    }
  }

  /**
   * Get ids from input.
   *
   * @param array $ids
   * @param array $input
   *
   * @throws \CRM_Core_Exception
   */
  public function getIDs(&$ids, &$input) {
    $ids['contact'] = $this->retrieve('x_cust_id', 'Integer', FALSE, 0);
    $ids['contribution'] = (int) $this->retrieve('x_invoice_num', 'Integer');

    // joining with contribution table for extra checks
    $sql = "
    SELECT cr.id, cr.contact_id
      FROM civicrm_contribution_recur cr
INNER JOIN civicrm_contribution co ON co.contribution_recur_id = cr.id
     WHERE cr.processor_id = '{$input['subscription_id']}' AND
           (cr.contact_id = {$ids['contact']} OR co.id = {$ids['contribution']})
     LIMIT 1";
    $contRecur = CRM_Core_DAO::executeQuery($sql);
    $contRecur->fetch();
    $ids['contributionRecur'] = (int) $contRecur->id;
    if ($ids['contact'] != $contRecur->contact_id) {
      $message = ts("Recurring contribution appears to have been re-assigned from id %1 to %2, continuing with %2.", [1 => $ids['contact'], 2 => $contRecur->contact_id]);
      CRM_Core_Error::debug_log_message($message);
      $ids['contact'] = $contRecur->contact_id;
    }
    if (!$ids['contributionRecur']) {
      $message = ts("Could not find contributionRecur id");
      $log = new CRM_Utils_SystemLogger();
      $log->error('payment_notification', ['message' => $message, 'ids' => $ids, 'input' => $input]);
      throw new CRM_Core_Exception($message);
    }
  }

  /**
   * @param string $name
   *   Parameter name.
   * @param string $type
   *   Parameter type.
   * @param bool $abort
   *   Abort if not present.
   * @param null $default
   *   Default value.
   *
   * @throws CRM_Core_Exception
   * @return mixed
   */
  public function retrieve($name, $type, $abort = TRUE, $default = NULL) {
    $value = CRM_Utils_Type::validate(
      empty($this->_inputParameters[$name]) ? $default : $this->_inputParameters[$name],
      $type,
      FALSE
    );
    if ($abort && $value === NULL) {
      throw new CRM_Core_Exception("Could not find an entry for $name");
    }
    return $value;
  }

  /**
   * Get membership id, if any.
   *
   * @param int $contributionID
   * @param int $contributionRecurID
   *
   * @return int|null
   */
  protected function getMembershipID(int $contributionID, int $contributionRecurID): ?int {
    // Get membershipId. Join with membership payment table for additional checks
    $sql = "
    SELECT m.id
      FROM civicrm_membership m
INNER JOIN civicrm_membership_payment mp ON m.id = mp.membership_id AND mp.contribution_id = {$contributionID}
     WHERE m.contribution_recur_id = {$contributionRecurID}
     LIMIT 1";
    return CRM_Core_DAO::singleValueQuery($sql);
  }

}