/*
 * Copyright (c) 2017 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_LAYOUT_HPP
#define TMCAGLWM_LAYOUT_HPP

#include <cstdint>
#include <string>
#include <map>
#include "result.hpp"
#include "wayland_ivi_wm.hpp"

namespace wm {

struct LayoutState {
   int main{-1};
   int sub{-1};

   bool operator==(const LayoutState &b) const {
      return main == b.main && sub == b.sub;
   }

   bool operator!=(const LayoutState &b) const {
      return !(*this == b);
   }
};

}  // namespace wm

class LayoutManager {
public:
    explicit LayoutManager();
    ~LayoutManager() = default;

    typedef std::unordered_map<std::string, std::string> TypeRolCtg;
    typedef std::unordered_map<std::string, TypeRolCtg>  TypeAreas;
    typedef std::unordered_map<std::string, TypeAreas>   TypeLayouts;
    typedef std::unordered_map<std::string, TypeLayouts> TypeLayers;

    int initialize();
    bool updateLayout(json_object* obj, const char* new_role, const char* new_area);
    TypeLayers getCurrentLayers();
    TypeLayers getPreviousLayers();
    compositor::rect getAreaSize(const char* area);
    bool isLayoutChanged(const char* layer);

    void updateArea(const char* layer, const char* role, const char* area);

private:
    // Disable copy and move
    LayoutManager(LayoutManager const &) = delete;
    LayoutManager &operator=(LayoutManager const &) = delete;
    LayoutManager(LayoutManager &&) = delete;
    LayoutManager &operator=(LayoutManager &&) = delete;

    TypeLayouts layout_define_;
    std::unordered_map<std::string, compositor::rect> area2size_;

    TypeLayers  crr_layers_, prv_layers_;
    TypeLayers  prv_layers_car_stop_;

    std::unordered_map<std::string, bool> is_layout_changed_;

    std::string getAreaName(TypeAreas area, const char* role, const char* category);
    int loadLayoutDb();
    std::string role2App(std::string role, void* ptr);
};



#endif  // TMCAGLWM_LAYOUT_HPP