/*
 * Copyright (C) 2017 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#import <Foundation/Foundation.h>
@class TWTRAuthConfig;
@class TWTRAuthConfigStore;
@protocol TWTRSessionStore_Private;

NS_ASSUME_NONNULL_BEGIN

@interface TWTRAuthConfigSessionsValidator : NSObject

- (instancetype)init NS_UNAVAILABLE;

- (instancetype)initWithConfigStore:(TWTRAuthConfigStore *)configStore sessionStore:(id<TWTRSessionStore_Private>)sessionStore;

/**
 * Calling this method will check that the auth config used by the
 * session store matches the config stored in the config store.
 * If they do not match it will clear the sessions from the session store.
 * It will then store the session store's config in the config store.
 * @note If the config store does not have a saved auth config the store will not be purged. If we did not do this all users would be logged out the first time this validator is used.
 */
- (void)validateSessionStoreContainsValidAuthConfig;

@end

NS_ASSUME_NONNULL_END