/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _nsCacheSession_h_
#define _nsCacheSession_h_

#include "nspr.h"
#include "nsError.h"
#include "nsCOMPtr.h"
#include "nsICacheSession.h"
#include "nsIFile.h"
#include "nsString.h"

class nsCacheSession : public nsICacheSession {
  virtual ~nsCacheSession();

 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSICACHESESSION

  nsCacheSession(const char* clientID, nsCacheStoragePolicy storagePolicy,
                 bool streamBased);

  nsCString* ClientID() { return &mClientID; }

  enum SessionInfo {
    eStoragePolicyMask = 0x000000FF,
    eStreamBasedMask = 0x00000100,
    eDoomEntriesIfExpiredMask = 0x00001000,
    ePrivateMask = 0x00010000
  };

  void MarkStreamBased() { mInfo |= eStreamBasedMask; }
  void ClearStreamBased() { mInfo &= ~eStreamBasedMask; }
  bool IsStreamBased() { return (mInfo & eStreamBasedMask) != 0; }

  void MarkDoomEntriesIfExpired() { mInfo |= eDoomEntriesIfExpiredMask; }
  void ClearDoomEntriesIfExpired() { mInfo &= ~eDoomEntriesIfExpiredMask; }
  bool WillDoomEntriesIfExpired() {
    return (0 != (mInfo & eDoomEntriesIfExpiredMask));
  }

  void MarkPrivate() { mInfo |= ePrivateMask; }
  void MarkPublic() { mInfo &= ~ePrivateMask; }
  bool IsPrivate() { return (mInfo & ePrivateMask) != 0; }
  nsCacheStoragePolicy StoragePolicy() {
    return (nsCacheStoragePolicy)(mInfo & eStoragePolicyMask);
  }

  void SetStoragePolicy(nsCacheStoragePolicy policy) {
    NS_ASSERTION(policy <= 0xFF, "too many bits in nsCacheStoragePolicy");
    mInfo &= ~eStoragePolicyMask;  // clear storage policy bits
    mInfo |= policy;
  }

  nsIFile* ProfileDir() { return mProfileDir; }

 private:
  nsCString mClientID;
  uint32_t mInfo;
  nsCOMPtr<nsIFile> mProfileDir;
};

#endif  // _nsCacheSession_h_