// Copyright (c) 2013 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.

#ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_

#include <map>
#include <set>
#include <string>
#include <utility>

#include "base/basictypes.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "content/browser/indexed_db/indexed_db_callbacks.h"
#include "content/browser/indexed_db/indexed_db_database.h"
#include "content/browser/indexed_db/indexed_db_database_callbacks.h"
#include "content/common/content_export.h"
#include "url/gurl.h"

namespace net {
class URLRequestContext;
}

namespace content {

class IndexedDBBackingStore;
struct IndexedDBPendingConnection;

class CONTENT_EXPORT IndexedDBFactory
    : NON_EXPORTED_BASE(public base::RefCountedThreadSafe<IndexedDBFactory>) {
 public:
  typedef std::multimap<GURL, IndexedDBDatabase*> OriginDBMap;
  typedef OriginDBMap::const_iterator OriginDBMapIterator;
  typedef std::pair<OriginDBMapIterator, OriginDBMapIterator> OriginDBs;

  virtual void ReleaseDatabase(const IndexedDBDatabase::Identifier& identifier,
                               bool forcedClose) = 0;

  virtual void GetDatabaseNames(scoped_refptr<IndexedDBCallbacks> callbacks,
                                const GURL& origin_url,
                                const base::FilePath& data_directory,
                                net::URLRequestContext* request_context) = 0;
  virtual void Open(const base::string16& name,
                    const IndexedDBPendingConnection& connection,
                    net::URLRequestContext* request_context,
                    const GURL& origin_url,
                    const base::FilePath& data_directory) = 0;

  virtual void DeleteDatabase(const base::string16& name,
                              net::URLRequestContext* request_context,
                              scoped_refptr<IndexedDBCallbacks> callbacks,
                              const GURL& origin_url,
                              const base::FilePath& data_directory) = 0;

  virtual void HandleBackingStoreFailure(const GURL& origin_url) = 0;
  virtual void HandleBackingStoreCorruption(
      const GURL& origin_url,
      const IndexedDBDatabaseError& error) = 0;

  virtual OriginDBs GetOpenDatabasesForOrigin(const GURL& origin_url) const = 0;

  virtual void ForceClose(const GURL& origin_url) = 0;

  // Called by the IndexedDBContext destructor so the factory can do cleanup.
  virtual void ContextDestroyed() = 0;

  // Called by the IndexedDBActiveBlobRegistry.
  virtual void ReportOutstandingBlobs(const GURL& origin_url,
                                      bool blobs_outstanding) = 0;

  // Called by an IndexedDBDatabase when it is actually deleted.
  virtual void DatabaseDeleted(
      const IndexedDBDatabase::Identifier& identifier) = 0;

  virtual size_t GetConnectionCount(const GURL& origin_url) const = 0;

 protected:
  friend class base::RefCountedThreadSafe<IndexedDBFactory>;

  IndexedDBFactory() {}
  virtual ~IndexedDBFactory() {}

  virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
      const GURL& origin_url,
      const base::FilePath& data_directory,
      net::URLRequestContext* request_context,
      blink::WebIDBDataLoss* data_loss,
      std::string* data_loss_reason,
      bool* disk_full,
      leveldb::Status* status) = 0;

  virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStoreHelper(
      const GURL& origin_url,
      const base::FilePath& data_directory,
      net::URLRequestContext* request_context,
      blink::WebIDBDataLoss* data_loss,
      std::string* data_loss_message,
      bool* disk_full,
      bool first_time,
      leveldb::Status* status) = 0;

 private:
  DISALLOW_COPY_AND_ASSIGN(IndexedDBFactory);
};

}  // namespace content

#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_