/**
     * Triggered when payment for membership / product is complete (for one-time or free billing)
     *
     * @access  public
     * @return  void
     */

    public function apply_tags_checkout( $event ) {

        // The mepr-signup hook passes a transaction already
        if ( is_a( $event, 'MeprTransaction' ) ) {
            $txn = $event;
        } else {
            $txn = $event->get_data();
        }

        if ( 'complete' != $txn->status ) {
            return;
        }

        // No need to run this twice if another action fires
        remove_action( 'mepr-signup', array( $this, 'apply_tags_checkout' ) );
        remove_action( 'mepr-event-transaction-completed', array( $this, 'apply_tags_checkout' ) );
        remove_action( 'mepr-txn-status-complete', array( $this, 'apply_tags_checkout' ) );

        // Log the action

        $action = 'unknown action';

        if ( doing_action( 'mepr-signup' ) ) {
            $action = 'mepr-signup';
        } elseif ( doing_action( 'mepr-event-transaction-completed' ) ) {
            $action = 'mepr-event-transaction-completed';
        } elseif ( doing_action( 'mepr-txn-status-complete' ) ) {
            $action = 'mepr-txn-status-complete';
        }

        // Logger
        wpf_log( 'info', $txn->user_id, 'New MemberPress transaction <a href="' . admin_url( 'admin.php?page=memberpress-trans&action=edit&id=' . $txn->id ) . '" target="_blank">#' . $txn->id . '</a> (' . $action . ')' );

        //
        // Get meta fields
        //

        $payment_method = $txn->payment_method();
        $product_id     = $txn->product_id;

        $update_data = array(
            'mepr_membership_level' => get_the_title( $product_id ),
            'mepr_reg_date'         => $txn->created_at,
            'mepr_payment_method'   => $payment_method->name,
        );

        // Add expiration only if applicable
        if ( strtotime( $txn->expires_at ) >= 0 ) {
            $update_data['mepr_expiration'] = $txn->expires_at;
        }

        // Coupons
        if ( ! empty( $txn->coupon_id ) ) {
            $update_data['mepr_coupon'] = get_the_title( $txn->coupon_id );
        }

        // Push all meta as well to get any updated custom field values during upgrades
        $user_meta = array_map( array( wp_fusion()->user, 'map_user_meta' ), get_user_meta( $txn->user_id ) );

        $update_data = array_merge( $user_meta, $update_data );

        wp_fusion()->user->push_user_meta( $txn->user_id, $update_data );

        //
        // Update tags based on the product purchased
        //

        $apply_tags = array();

        $settings = get_post_meta( $txn->product_id, 'wpf-settings-memberpress', true );

        if ( ! empty( $settings ) ) {

            if ( ! empty( $settings['apply_tags_registration'] ) ) {
                $apply_tags = array_merge( $apply_tags, $settings['apply_tags_registration'] );
            }

            if ( ! empty( $settings['tag_link'] ) ) {
                $apply_tags = array_merge( $apply_tags, $settings['tag_link'] );
            }

            if ( ! empty( $settings['apply_tags_payment_failed'] ) ) {

                // Remove any failed tags
                remove_action( 'wpf_tags_modified', array( $this, 'add_to_membership' ), 10, 2 );

                wp_fusion()->user->remove_tags( $settings['apply_tags_payment_failed'], $txn->user_id );

                add_action( 'wpf_tags_modified', array( $this, 'add_to_membership' ), 10, 2 );

            }

            // If this transaction was against a subscription that had a trial, and is no longer in a trial, consider it "converted"
            $subscription = $txn->subscription();

            if ( false !== $subscription && true == $subscription->trial ) {

                // Figure out if it's the first real payment

                $first_payment = false;

                if ( $subscription->trial_amount > 0.00 && $subscription->txn_count == 2 ) {
                    $first_payment = true;
                } elseif ( $subscription->trial_amount == 0.00 && $subscription->txn_count == 1 ) {
                    $first_payment = true;
                }

                if ( true == $first_payment && ! empty( $settings['apply_tags_converted'] ) ) {

                    $apply_tags = array_merge( $apply_tags, $settings['apply_tags_converted'] );

                }
            }
        }

        // Coupons
        if ( ! empty( $txn->coupon_id ) ) {

            $coupon_settings = get_post_meta( $txn->coupon_id, 'wpf-settings', true );

            if ( ! empty( $coupon_settings ) && ! empty( $coupon_settings['apply_tags_coupon'] ) ) {
                $apply_tags = array_merge( $apply_tags, $coupon_settings['apply_tags_coupon'] );
            }
        }

        // Corporate accounts
        $corporate_account = get_user_meta( $txn->user_id, 'mpca_corporate_account_id', true );

        if ( ! empty( $corporate_account ) && ! empty( $settings['apply_tags_corporate_accounts'] ) ) {
            $apply_tags = array_merge( $apply_tags, $coupon_settings['apply_tags_corporate_accounts'] );
        }

        if ( ! empty( $apply_tags ) ) {

            // Prevent looping when tags are applied
            remove_action( 'wpf_tags_modified', array( $this, 'add_to_membership' ), 10, 2 );

            wp_fusion()->user->apply_tags( $apply_tags, $txn->user_id );

            add_action( 'wpf_tags_modified', array( $this, 'add_to_membership' ), 10, 2 );

        }

    }