#include <gba/gba.hpp>

namespace GameBoyAdvance {

Interface* interface = nullptr;

Interface::Interface() {
  interface = this;

  information.name        = "Game Boy Advance";
  information.width       = 240;
  information.height      = 160;
  information.overscan    = false;
  information.aspectRatio = 1.0;
  information.resettable  = false;
  information.capability.states = true;
  information.capability.cheats = false;

  media.append({ID::GameBoyAdvance, "Game Boy Advance", "gba", true});

  { Device device{0, ID::Device, "Controller"};
    device.input.append({ 0, 0, "A"     });
    device.input.append({ 1, 0, "B"     });
    device.input.append({ 2, 0, "Select"});
    device.input.append({ 3, 0, "Start" });
    device.input.append({ 4, 0, "Right" });
    device.input.append({ 5, 0, "Left"  });
    device.input.append({ 6, 0, "Up"    });
    device.input.append({ 7, 0, "Down"  });
    device.input.append({ 8, 0, "R"     });
    device.input.append({ 9, 0, "L"     });
    device.input.append({10, 2, "Rumble"});
    device.order = {6, 7, 5, 4, 1, 0, 9, 8, 2, 3, 10};
    this->device.append(device);
  }

  port.append({0, "Device", {device[0]}});
}

auto Interface::title() -> string {
  return cartridge.title();
}

auto Interface::videoFrequency() -> double {
  return 16777216.0 / (228.0 * 1232.0);
}

auto Interface::audioFrequency() -> double {
  return 16777216.0 / 512.0;
}

auto Interface::loaded() -> bool {
  return cartridge.loaded();
}

auto Interface::group(uint id) -> uint {
  switch(id) {
  case ID::SystemManifest:
  case ID::BIOS:
    return ID::System;
  case ID::Manifest:
  case ID::MROM:
  case ID::SRAM:
  case ID::EEPROM:
  case ID::FLASH:
    return ID::GameBoyAdvance;
  }

  throw;
}

auto Interface::load(uint id) -> void {
  cartridge.load();
}

auto Interface::save() -> void {
  for(auto& memory : cartridge.memory) {
    interface->saveRequest(memory.id, memory.name);
  }
}

auto Interface::load(uint id, const stream& stream) -> void {
  if(id == ID::SystemManifest) {
    system.information.manifest = stream.text();
  }

  if(id == ID::BIOS) {
    stream.read(bios.data, min(bios.size, stream.size()));
  }

  if(id == ID::Manifest) {
    cartridge.information.markup = stream.text();
  }

  if(id == ID::MROM) {
    stream.read(cartridge.mrom.data, min(cartridge.mrom.size, stream.size()));
  }

  if(id == ID::SRAM) {
    stream.read(cartridge.sram.data, min(cartridge.sram.size, stream.size()));
  }

  if(id == ID::EEPROM) {
    stream.read(cartridge.eeprom.data, min(cartridge.eeprom.size, stream.size()));
  }

  if(id == ID::FLASH) {
    stream.read(cartridge.flash.data, min(cartridge.flash.size, stream.size()));
  }
}

auto Interface::save(uint id, const stream& stream) -> void {
  if(id == ID::SRAM) {
    stream.write(cartridge.sram.data, cartridge.sram.size);
  }

  if(id == ID::EEPROM) {
    stream.write(cartridge.eeprom.data, cartridge.eeprom.size);
  }

  if(id == ID::FLASH) {
    stream.write(cartridge.flash.data, cartridge.flash.size);
  }
}

auto Interface::unload() -> void {
  save();
  cartridge.unload();
}

auto Interface::power() -> void {
  system.power();
}

auto Interface::reset() -> void {
  system.power();
}

auto Interface::run() -> void {
  system.run();
}

auto Interface::serialize() -> serializer {
  system.runtosave();
  return system.serialize();
}

auto Interface::unserialize(serializer& s) -> bool {
  return system.unserialize(s);
}

auto Interface::paletteUpdate(PaletteMode mode) -> void {
  video.generatePalette(mode);
}

}