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#ifndef MOZC_CONFIG_STATS_CONFIG_UTIL_H_
#define MOZC_CONFIG_STATS_CONFIG_UTIL_H_

namespace mozc {
namespace config {

// Interface class
class StatsConfigUtilInterface {
 public:
  StatsConfigUtilInterface() = default;
  StatsConfigUtilInterface(const StatsConfigUtilInterface&) = delete;
  StatsConfigUtilInterface& operator=(const StatsConfigUtilInterface&) = delete;
  virtual ~StatsConfigUtilInterface() = default;

  virtual bool IsEnabled() = 0;
  virtual bool SetEnabled(bool val) = 0;
};

class StatsConfigUtil {
 public:
  StatsConfigUtil() = delete;
  StatsConfigUtil(const StatsConfigUtil&) = delete;
  StatsConfigUtil& operator=(const StatsConfigUtil&) = delete;

  // Get send stats config from proper field.
  //  Windows: registry
  //  Mac: text file
  // If the return value is true, we turn on breakpad and usage stats.
  // TODO(toshiyuki): plist for Mac
  static bool IsEnabled();

  // Set send stats config to proper field.
  // Note: Administrative privilege is required in Windows.
  // Returns true if succeeded.
  static bool SetEnabled(bool val);

  // Inject a dependency
  static void SetHandler(StatsConfigUtilInterface *handler);

  // Should never be allocated.
};

}  // namespace config
}  // namespace mozc

#endif  // MOZC_CONFIG_STATS_CONFIG_UTIL_H_
