// Copyright 2013 Google Inc. All Rights Reserved.

#ifndef CDM_BASE_PROPERTIES_H_
#define CDM_BASE_PROPERTIES_H_

#include <map>
#include <string>

#include "lock.h"
#include "wv_cdm_types.h"

namespace wvcdm {

typedef std::map<std::string, bool> CdmBooleanPropertiesMap;

struct CdmBooleanProperties {
  std::string name;
  bool value;
};

// This class saves information about features and properties enabled
// for a given platform. At initialization it reads in properties from
// property_configuration.h. That file specifies features selected for each
// platform. Core CDM can then query enabled features though the GetProperty
// method and tailor its behaviour in a non-platform specific way.
//
// Additional features can be added at runtime as long as the key names do
// not clash. Also, only boolean properties are supported at this time, though
// it should be trivial to in support for other datatypes.
class Properties {
 public:
  static Properties* GetInstance();

  // value argument is only set if the property was found (true is returned)
  bool GetProperty(std::string& key, bool& value);

 private:
  Properties();
  ~Properties() {}

  void SetProperty(std::string& key, bool value);

  static Properties* instance_;
  static Lock properties_lock_;

  CdmBooleanPropertiesMap boolean_properties_;

  CORE_DISALLOW_COPY_AND_ASSIGN(Properties);
};

}  // namespace wvcdm

#endif  // CDM_BASE_PROPERTIES_H_