Configuration configuration;

auto Configuration::process(Markup::Node document, bool load) -> void {
  #define bind(type, path, name) \
    if(load) { \
      if(auto node = document[path]) name = node.type(); \
    } else { \
      document(path).setValue(name); \
    } \

  bind(natural, "System/CPU/Version", system.cpu.version);
  bind(natural, "System/PPU1/Version", system.ppu1.version);
  bind(natural, "System/PPU1/VRAM/Size", system.ppu1.vram.size);
  bind(natural, "System/PPU2/Version", system.ppu2.version);

  bind(boolean, "Video/BlurEmulation", video.blurEmulation);
  bind(boolean, "Video/ColorEmulation", video.colorEmulation);

  bind(boolean, "Hacks/FastPPU/Enable", hacks.ppuFast.enable);
  bind(boolean, "Hacks/FastPPU/NoSpriteLimit", hacks.ppuFast.noSpriteLimit);
  bind(boolean, "Hacks/FastPPU/HiresMode7", hacks.ppuFast.hiresMode7);
  //#HDmode7>
  bind(natural, "Hacks/FastPPU/HdMode7Scale", hacks.ppuFast.hdMode7Scale);
  bind(boolean, "Hacks/FastPPU/HdMode7Perspective", hacks.ppuFast.hdMode7Perspective);
  //#HDmode7<
  bind(boolean, "Hacks/FastDSP/Enable", hacks.dspFast.enable);
  bind(boolean, "Hacks/Coprocessors/HLE", hacks.coprocessors.hle);
  bind(boolean, "Hacks/Coprocessors/DelayedSync", hacks.coprocessors.delayedSync);

  #undef bind
}

auto Configuration::read() -> string {
  Markup::Node document;
  process(document, false);
  return BML::serialize(document, " ");
}

auto Configuration::read(string name) -> string {
  auto document = BML::unserialize(read());
  return document[name].text();
}

auto Configuration::write(string configuration) -> bool {
  *this = {};

  if(auto document = BML::unserialize(configuration)) {
    return process(document, true), true;
  }

  return false;
}

auto Configuration::write(string name, string value) -> bool {
  if(SuperFamicom::system.loaded() && name.beginsWith("System/")) return false;

  auto document = BML::unserialize(read());
  if(auto node = document[name]) {
    node.setValue(value);
    return process(document, true), true;
  }

  return false;
}