#include "CMemoryCardSys.hpp"
#include "Runtime/GameGlobalObjects.hpp"
#include "Runtime/IMain.hpp"

namespace metaforce {

kabufuda::SystemString CMemoryCardSys::ResolveDolphinCardPath(kabufuda::ECardSlot slot) {
  if (g_Main->IsUSA() && !g_Main->IsTrilogy()) {
    const char* home = getenv("HOME");
    if (!home || home[0] != '/')
      return {};
    const char* dataHome = getenv("XDG_DATA_HOME");

    /* XDG-selected data path */
    kabufuda::SystemString path =
        ((dataHome && dataHome[0] == '/') ? dataHome : hecl::SystemString(home)) + "/.local/share/dolphin-emu";
    path += fmt::format(FMT_STRING("/GC/MemoryCard{:c}.USA.raw"), slot == kabufuda::ECardSlot::SlotA ? 'A' : 'B');

    hecl::Sstat theStat;
    if (hecl::Stat(path.c_str(), &theStat) || !S_ISREG(theStat.st_mode)) {
      /* legacy case for older dolphin versions */
      path = home;
      path += fmt::format(FMT_STRING("/.dolphin-emu/GC/MemoryCard{:c}.USA.raw"),
                          slot == kabufuda::ECardSlot::SlotA ? 'A' : 'B');
      if (hecl::Stat(path.c_str(), &theStat) || !S_ISREG(theStat.st_mode))
        return {};
    }

    return path;
  }
  return {};
}

kabufuda::SystemString CMemoryCardSys::_CreateDolphinCard(kabufuda::ECardSlot slot) {
  if (g_Main->IsUSA() && !g_Main->IsTrilogy()) {
    const char* home = getenv("HOME");
    if (!home || home[0] != '/')
      return {};
    const char* dataHome = getenv("XDG_DATA_HOME");

    /* XDG-selected data path */
    kabufuda::SystemString path =
        ((dataHome && dataHome[0] == '/') ? dataHome : hecl::SystemString(home)) + "/.local/share/dolphin-emu/GC";

    if (hecl::RecursiveMakeDir(path.c_str()) < 0)
      return {};

    path += fmt::format(FMT_STRING("/MemoryCard{:c}.USA.raw"), slot == kabufuda::ECardSlot::SlotA ? 'A' : 'B');
    const auto fp = hecl::FopenUnique(path.c_str(), "wb");
    if (fp == nullptr) {
      return {};
    }

    return path;
  }
  return {};
}

} // namespace metaforce