/**
 ******************************************************************************
 * Xenia : Xbox 360 Emulator Research Project                                 *
 ******************************************************************************
 * Copyright 2019 Ben Vanik. All rights reserved.                             *
 * Released under the BSD license - see LICENSE in the root for more details. *
 ******************************************************************************
 */

#include "xenia/base/logging.h"
#include "xenia/cpu/processor.h"
#include "xenia/kernel/kernel_state.h"
#include "xenia/kernel/user_module.h"
#include "xenia/kernel/util/shim_utils.h"
#include "xenia/kernel/xboxkrnl/xboxkrnl_private.h"
#include "xenia/xbox.h"

DEFINE_int32(user_language, 1,
             "User language ID. "
             "1=en / 2=ja / 3=de / 4=fr / 5=es / 6=it / 7=ko / 8=zh / 9=pt / "
             "11=pl / 12=ru / 13=sv / 14=tr / 15=nb / 16=nl / 17=zh",
             "XConfig");

// TODO(gibbed): The description is very long. Newline support?
DEFINE_int32(
    user_country, 103,
    "User country ID. "
    "1=AE / 2=AL / 3=AM / 4=AR / 5=AT / 6=AU / 7=AZ / 8=BE / 9=BG / 10=BH / "
    "11=BN / 12=BO / 13=BR / 14=BY / 15=BZ / 16=CA / 18=CH / 19=CL / 20=CN / "
    "21=CO / 22=CR / 23=CZ / 24=DE / 25=DK / 26=DO / 27=DZ / 28=EC / 29=EE / "
    "30=EG / 31=ES / 32=FI / 33=FO / 34=FR / 35=GB / 36=GE / 37=GR / 38=GT / "
    "39=HK / 40=HN / 41=HR / 42=HU / 43=ID / 44=IE / 45=IL / 46=IN / 47=IQ / "
    "48=IR / 49=IS / 50=IT / 51=JM / 52=JO / 53=JP / 54=KE / 55=KG / 56=KR / "
    "57=KW / 58=KZ / 59=LB / 60=LI / 61=LT / 62=LU / 63=LV / 64=LY / 65=MA / "
    "66=MC / 67=MK / 68=MN / 69=MO / 70=MV / 71=MX / 72=MY / 73=NI / 74=NL / "
    "75=NO / 76=NZ / 77=OM / 78=PA / 79=PE / 80=PH / 81=PK / 82=PL / 83=PR / "
    "84=PT / 85=PY / 86=QA / 87=RO / 88=RU / 89=SA / 90=SE / 91=SG / 92=SI / "
    "93=SK / 95=SV / 96=SY / 97=TH / 98=TN / 99=TR / 100=TT / 101=TW / "
    "102=UA / 103=US / 104=UY / 105=UZ / 106=VE / 107=VN / 108=YE / 109=ZA",
    "XConfig");

namespace xe {
namespace kernel {
namespace xboxkrnl {

X_STATUS xeExGetXConfigSetting(uint16_t category, uint16_t setting,
                               void* buffer, uint16_t buffer_size,
                               uint16_t* required_size) {
  uint16_t setting_size = 0;
  alignas(uint32_t) uint8_t value[4];

  // TODO(benvanik): have real structs here that just get copied from.
  // https://free60project.github.io/wiki/XConfig.html
  // https://github.com/oukiar/freestyledash/blob/master/Freestyle/Tools/Generic/ExConfig.h
  switch (category) {
    case 0x0002:
      // XCONFIG_SECURED_CATEGORY
      switch (setting) {
        case 0x0002:  // XCONFIG_SECURED_AV_REGION
          setting_size = 4;
          xe::store_and_swap<uint32_t>(value, 0x00001000);  // USA/Canada
          break;
        default:
          assert_unhandled_case(setting);
          return X_STATUS_INVALID_PARAMETER_2;
      }
      break;
    case 0x0003:
      // XCONFIG_USER_CATEGORY
      switch (setting) {
        case 0x0001:  // XCONFIG_USER_TIME_ZONE_BIAS
        case 0x0002:  // XCONFIG_USER_TIME_ZONE_STD_NAME
        case 0x0003:  // XCONFIG_USER_TIME_ZONE_DLT_NAME
        case 0x0004:  // XCONFIG_USER_TIME_ZONE_STD_DATE
        case 0x0005:  // XCONFIG_USER_TIME_ZONE_DLT_DATE
        case 0x0006:  // XCONFIG_USER_TIME_ZONE_STD_BIAS
        case 0x0007:  // XCONFIG_USER_TIME_ZONE_DLT_BIAS
          setting_size = 4;
          // TODO(benvanik): get this value.
          xe::store_and_swap<uint32_t>(value, 0);
          break;
        case 0x0009:  // XCONFIG_USER_LANGUAGE
          setting_size = 4;
          xe::store_and_swap<uint32_t>(value, cvars::user_language);
          break;
        case 0x000A:  // XCONFIG_USER_VIDEO_FLAGS
          setting_size = 4;
          xe::store_and_swap<uint32_t>(value, 0x00040000);
          break;
        case 0x000C:  // XCONFIG_USER_RETAIL_FLAGS
          setting_size = 4;
          // TODO(benvanik): get this value.
          xe::store_and_swap<uint32_t>(value, 0);
          break;
        case 0x000E:  // XCONFIG_USER_COUNTRY
          setting_size = 1;
          value[0] = static_cast<uint8_t>(cvars::user_country);
          break;
        default:
          assert_unhandled_case(setting);
          return X_STATUS_INVALID_PARAMETER_2;
      }
      break;
    default:
      assert_unhandled_case(category);
      return X_STATUS_INVALID_PARAMETER_1;
  }

  if (buffer) {
    if (buffer_size < setting_size) {
      return X_STATUS_BUFFER_TOO_SMALL;
    }
    std::memcpy(buffer, value, setting_size);
  } else {
    if (buffer_size) {
      return X_STATUS_INVALID_PARAMETER_3;
    }
  }

  if (required_size) {
    *required_size = setting_size;
  }

  return X_STATUS_SUCCESS;
}

dword_result_t ExGetXConfigSetting(word_t category, word_t setting,
                                   lpdword_t buffer_ptr, word_t buffer_size,
                                   lpword_t required_size_ptr) {
  uint16_t required_size = 0;
  X_STATUS result = xeExGetXConfigSetting(category, setting, buffer_ptr,
                                          buffer_size, &required_size);

  if (required_size_ptr) {
    *required_size_ptr = required_size;
  }

  return result;
}
DECLARE_XBOXKRNL_EXPORT1(ExGetXConfigSetting, kModules, kImplemented);

void RegisterXConfigExports(xe::cpu::ExportResolver* export_resolver,
                            KernelState* kernel_state) {}

}  // namespace xboxkrnl
}  // namespace kernel
}  // namespace xe