/*
 * Copyright (c) 2018 TOYOTA MOTOR CORPORATION
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef TMCAGLWM_POLICY_MANAGER_HPP
#define TMCAGLWM_POLICY_MANAGER_HPP


#include <unordered_map>
#include <vector>

namespace stm {
extern "C" {
#include "dummy_stm.h"
}
} // namespace stm

class PolicyManager {

public:
    explicit PolicyManager();
    ~PolicyManager() = default;

    int initialize();
    int checkPolicy(json_object* json_in, json_object** json_out);
    std::string roleToCategory(const char* role);
private:
    // Disable copy and move
    PolicyManager(PolicyManager const &) = delete;
    PolicyManager &operator=(PolicyManager const &) = delete;
    PolicyManager(PolicyManager &&) = delete;
    PolicyManager &operator=(PolicyManager &&) = delete;

    // Convert map
    std::unordered_map<std::string, int> eventname2no_;
    std::unordered_map<std::string, int> categoryname2no_;
    std::unordered_map<std::string, int> areaname2no_;

    std::unordered_map<std::string, std::string> role2category_;
    std::unordered_map<std::string, std::string> category2role_;
    std::unordered_map<std::string, std::string> role2defaultarea_;

    stm::stm_state_t current_state_;

    // Load role.db
    int loadRoleDb();

    const char* getStringFromJson(json_object* obj, const char* key);
    int getIntFromJson(json_object* obj, const char* key);
    void addStateToJson(const char* key, int is_changed, const char* state, json_object** json_out);
    std::vector<std::string> parseString(std::string str, char delimiter);
    std::string deleteSpace(std::string str);
};

#endif  // TMCAGLWM_POLICY_MANAGER_HPP