#include <fmt/core.h>
#include "palette.hpp"
#include "config.hpp"
#include "dbc.hpp"

namespace palette {
  using std::string;
  using nlohmann::json;

  struct PaletteMgr {
    std::unordered_map<string, sf::Color> palettes;
    std::string config;
  };

  static PaletteMgr COLOR;

  void init(const string &json_file) {
    COLOR.config = json_file;
    Config config(json_file);
    json& colors = config.json();

    for(auto [key, value_specs] : colors.items()) {
      const string& base_key = key;

      for(auto [value, rgba] : value_specs.items()) {
        auto color_path = base_key + ":" + value;
        dbc::check(!COLOR.palettes.contains(color_path),
            fmt::format("PALLETES config {} already has a color path {}", COLOR.config, color_path));

        uint8_t alpha = rgba.size() == 3 ? 255 : (uint8_t)rgba[3];

        sf::Color color{rgba[0], rgba[1], rgba[2], alpha};

        COLOR.palettes.try_emplace(color_path, color);
      }
    }
  }

  sf::Color get(const string& key) {
    dbc::check(COLOR.palettes.contains(key),
        fmt::format("COLOR {} is missing from {}", key, COLOR.config));
    return COLOR.palettes.at(key);
  }

  sf::Color get(const string& key, const string& value) {
    std::string color{key + ":" + value};

    dbc::check(COLOR.palettes.contains(color),
        fmt::format("COLOR {} is missing from {}", color, COLOR.config));

    return COLOR.palettes.at(color);
  }
}