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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "base/time/time.h"
// This interface specifies the interaction that a
// |PreviewsLitePageNavigationThrottle| has with it's state manager. This class
// tracks the state of the Navigation Throttle since a single instance of the
// navigation throttle can be very short lived, and therefore is not aware of
// any actions taken by its predecessor.
class PreviewsLitePageNavigationThrottleManager {
// Used to notify that the Previews Server should not be sent anymore requests
// until after the given duration.
virtual void SetServerUnavailableFor(base::TimeDelta retry_after) = 0;
// Returns true if a Preview should not be triggered because the server is
// unavailable.
virtual bool IsServerUnavailable() = 0;
// Informs the manager that the given URL should be bypassed one time.
virtual void AddSingleBypass(std::string url) = 0;
// Queries the manager if the given URL should be bypassed one time, returning
// true if yes.
virtual bool CheckSingleBypass(std::string url) = 0;
// Generates a new page id for a request to the previews server.
virtual uint64_t GeneratePageID() = 0;
// Reports data savings to Data Saver. Only the difference in |original_bytes|
// and |network_bytes| will be updated in the data saver calls.
virtual void ReportDataSavings(int64_t network_bytes,
int64_t original_bytes,
const std::string& host) = 0;
// Blacklists the given |host| for the given |duration| in the server
// bypass blacklist for LitePageRedirects.
virtual void BlacklistBypassedHost(const std::string& host,
base::TimeDelta duration) = 0;
// Returns true if the given |host| is blacklisted in the server bypass
// blacklist.
virtual bool HostBlacklistedFromBypass(const std::string& host) = 0;