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#include "session/ime_switch_util.h"

#include <set>
#include <sstream>
#include <string>
#include <vector>

#include "base/port.h"
#include "base/singleton.h"
#include "config/config_handler.h"
#include "protocol/config.pb.h"
#include "session/key_info_util.h"

namespace mozc {
namespace config {
namespace {

class ImeSwitchUtilImpl {
 public:
  ImeSwitchUtilImpl() {
    config::Config config;
    config::ConfigHandler::GetConfig(&config);
    ReloadConfig(config);
  }

  bool IsDirectModeCommand(const commands::KeyEvent &key) const {
    return KeyInfoUtil::ContainsKey(direct_mode_keys_, key);
  }

  void ReloadConfig(const config::Config &config) {
    direct_mode_keys_ = KeyInfoUtil::ExtractSortedDirectModeKeys(config);
  }

 private:
  std::vector<KeyInformation> direct_mode_keys_;

  DISALLOW_COPY_AND_ASSIGN(ImeSwitchUtilImpl);
};

}  // namespace

bool ImeSwitchUtil::IsDirectModeCommand(const commands::KeyEvent &key) {
  return Singleton<ImeSwitchUtilImpl>::get()->IsDirectModeCommand(key);
}

void ImeSwitchUtil::ReloadConfig(const config::Config &config) {
  Singleton<ImeSwitchUtilImpl>::get()->ReloadConfig(config);
}

}  // namespace config
}  // namespace mozc