Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wp-mail-smtp/src/Providers/Sendinblue/Api.php

@@ -0,0 +1,115 @@
+<?php
+
+namespace WPMailSMTP\Providers\Sendinblue;
+
+use WPMailSMTP\ConnectionInterface;
+
+/**
+ * Class Api is a wrapper for Sendinblue library with handy methods.
+ *
+ * @since 1.6.0
+ */
+class Api {
+
+	/**
+	 * The Connection object.
+	 *
+	 * @since 3.7.0
+	 *
+	 * @var ConnectionInterface
+	 */
+	private $connection;
+
+	/**
+	 * Contains mailer options, constants + DB values.
+	 *
+	 * @since 1.6.0
+	 *
+	 * @var array
+	 */
+	private $options;
+
+	/**
+	 * API constructor that inits defaults and retrieves options.
+	 *
+	 * @since 1.6.0
+	 *
+	 * @param ConnectionInterface $connection The Connection object.
+	 */
+	public function __construct( $connection = null ) {
+
+		if ( ! is_null( $connection ) ) {
+			$this->connection = $connection;
+		} else {
+			$this->connection = wp_mail_smtp()->get_connections_manager()->get_primary_connection();
+		}
+
+		$this->options = $this->connection->get_options()->get_group( Options::SLUG );
+	}
+
+	/**
+	 * Configure API key authorization: api-key.
+	 *
+	 * @since 1.6.0
+	 * @deprecated 3.9.0 We are no longer using the Sendinblue SDK.
+	 *
+	 * @return null
+	 */
+	protected function get_api_config() {
+
+		_deprecated_function( __METHOD__, '3.9.0' );
+
+		return null;
+	}
+
+	/**
+	 * Get the mailer client instance for Account API.
+	 *
+	 * @since 1.6.0
+	 * @deprecated 3.9.0 We are no longer using the Sendinblue SDK.
+	 */
+	public function get_account_client() {
+
+		_deprecated_function( __METHOD__, '3.9.0' );
+
+		return null;
+	}
+
+	/**
+	 * Get the mailer client instance for Sender API.
+	 *
+	 * @since 1.6.0
+	 * @deprecated 3.9.0 We are no longer using the Sendinblue SDK.
+	 */
+	public function get_sender_client() {
+
+		_deprecated_function( __METHOD__, '3.9.0' );
+
+		return null;
+	}
+
+	/**
+	 * Get the mailer client instance for SMTP API.
+	 *
+	 * @since 1.6.0
+	 * @deprecated 3.9.0 We are no longer using the Sendinblue SDK.
+	 */
+	public function get_smtp_client() {
+
+		_deprecated_function( __METHOD__, '3.9.0' );
+
+		return null;
+	}
+
+	/**
+	 * Whether the mailer is ready to be used in API calls.
+	 *
+	 * @since 1.6.0
+	 *
+	 * @return bool
+	 */
+	public function is_ready() {
+
+		return ! empty( $this->options['api_key'] );
+	}
+}