Add Google authentication

vendor/OAuth/Common/Storage/TokenStorageInterface.php

@@ -0,0 +1,98 @@
+<?php
+
+namespace OAuth\Common\Storage;
+
+use OAuth\Common\Token\TokenInterface;
+use OAuth\Common\Storage\Exception\TokenNotFoundException;
+
+/**
+ * All token storage providers must implement this interface.
+ */
+interface TokenStorageInterface
+{
+    /**
+     * @param string $service
+     *
+     * @return TokenInterface
+     *
+     * @throws TokenNotFoundException
+     */
+    public function retrieveAccessToken($service);
+
+    /**
+     * @param string         $service
+     * @param TokenInterface $token
+     *
+     * @return TokenStorageInterface
+     */
+    public function storeAccessToken($service, TokenInterface $token);
+
+    /**
+     * @param string $service
+     *
+     * @return bool
+     */
+    public function hasAccessToken($service);
+
+    /**
+     * Delete the users token. Aka, log out.
+     *
+     * @param string $service
+     *
+     * @return TokenStorageInterface
+     */
+    public function clearToken($service);
+
+    /**
+     * Delete *ALL* user tokens. Use with care. Most of the time you will likely
+     * want to use clearToken() instead.
+     *
+     * @return TokenStorageInterface
+     */
+    public function clearAllTokens();
+
+    /**
+     * Store the authorization state related to a given service
+     *
+     * @param string $service
+     * @param string $state
+     *
+     * @return TokenStorageInterface
+     */
+    public function storeAuthorizationState($service, $state);
+
+    /**
+     * Check if an authorization state for a given service exists
+     *
+     * @param string $service
+     *
+     * @return bool
+     */
+    public function hasAuthorizationState($service);
+
+    /**
+     * Retrieve the authorization state for a given service
+     *
+     * @param string $service
+     *
+     * @return string
+     */
+    public function retrieveAuthorizationState($service);
+
+    /**
+     * Clear the authorization state of a given service
+     *
+     * @param string $service
+     *
+     * @return TokenStorageInterface
+     */
+    public function clearAuthorizationState($service);
+
+    /**
+     * Delete *ALL* user authorization states. Use with care. Most of the time you will likely
+     * want to use clearAuthorization() instead.
+     *
+     * @return TokenStorageInterface
+     */
+    public function clearAllAuthorizationStates();
+}