Noptin_WooCommerce::get_order_customer_details( $order_id,  $existing_subscriber = false )

	public function get_order_customer_details( $order_id, $existing_subscriber = false ) {

		// Fetch the order.
		$order = wc_get_order( $order_id );
		if ( empty( $order ) ) {
			return array();
		}

		$noptin_fields = array();

		if ( ! $existing_subscriber ) {
			$noptin_fields = array(
				'_subscriber_via' => 'woocommerce_checkout',
				'order_id'        => $order_id,
			);
		}

		if ( method_exists( $order, 'get_billing_email' ) ) {
			$noptin_fields['email']             = $order->get_billing_email();
			$noptin_fields['name']              = $order->get_formatted_billing_full_name();
			$noptin_fields['phone']             = $order->get_billing_phone();
			$noptin_fields['company']           = $order->get_billing_company();
			$noptin_fields['address_1']         = $order->get_billing_address_1();
			$noptin_fields['address_2']         = $order->get_billing_address_2();
			$noptin_fields['postcode']          = $order->get_billing_postcode();
			$noptin_fields['city']              = $order->get_billing_city();
			$noptin_fields['state']             = $order->get_billing_state();
			$noptin_fields['country']           = $order->get_billing_country();
			$noptin_fields['wp_user_id']        = $order->get_customer_id();
			$noptin_fields['ip_address']        = $order->get_customer_ip_address();
			$noptin_fields['user_agent']        = $order->get_customer_user_agent();
			$noptin_fields['formatted_address'] = $order->get_formatted_billing_address();

			if ( ! empty( $noptin_fields['country'] ) ) {
				$countries = WC()->countries->get_countries();
				$noptin_fields['country_short'] = $noptin_fields['country'];
				$noptin_fields['country']       = isset( $countries[ $noptin_fields['country'] ] ) ? $countries[ $noptin_fields['country'] ] : $noptin_fields['country'];
			}

		} else {
			$noptin_fields['email']      = $order->billing_email;
			$noptin_fields['name']       = trim( "{$order->billing_first_name} {$order->billing_last_name}" );
			$noptin_fields['wp_user_id'] = $order->customer_id;
			$noptin_fields['phone']      = $order->billing_phone;
			$noptin_fields['company']    = $order->billing_company;
			$noptin_fields['address_1']  = $order->billing_address_1;
			$noptin_fields['address_2']  = $order->billing_address_2;
			$noptin_fields['postcode']   = $order->billing_postcode;
			$noptin_fields['city']       = $order->billing_city;
			$noptin_fields['state']      = $order->billing_state;
			$noptin_fields['country']    = $order->billing_country;
			$noptin_fields['ip_address'] = $order->customer_ip_address;
			$noptin_fields['user_agent'] = $order->customer_user_agent;
		}

		return array_filter( $noptin_fields );
	}