#ifndef __I_SYSTEM__
#define __I_SYSTEM__

#include "basics.h"
#include <thread>
#include "tarray.h"
#include "zstring.h"
#include "utf8.h"

struct ticcmd_t;
struct WadStuff;

// [RH] Detects the OS the game is running under.
void I_DetectOS (void);

// Called by DoomMain.
void CalculateCPUSpeed (void);

// Return a seed value for the RNG.
unsigned int I_MakeRNGSeed();
void I_ShowFatalError(const char* msg);

void I_PutInClipboard(const char* str);
FString I_GetFromClipboard(bool use_primary_selection);


//
// Called by D_DoomLoop,
// called before processing any tics in a frame
// (just after displaying a frame).
// Time consuming syncronous operations
// are performed here (joystick reading).
// Can call D_PostEvent.
//
void I_StartFrame (void);


//
// Called by D_DoomLoop,
// called before processing each tic in a frame.
// Quick syncronous operations are performed here.
// Can call D_PostEvent.
void I_StartTic (void);

// Asynchronous interrupt functions should maintain private queues
// that are read by the synchronous functions
// to be converted into events.

// Either returns a null ticcmd,
// or calls a loadable driver to build it.
// This ticcmd will then be modified by the gameloop
// for normal input.
ticcmd_t *I_BaseTiccmd (void);


// Called by M_Responder when quit is selected.
// Clean exit, displays sell blurb.
void I_Quit (void);


// Set the mouse cursor. The texture must be 32x32.
class FGameTexture;
bool I_SetCursor(FGameTexture *cursor);

// Repaint the pre-game console
void I_PaintConsole (void);

// Print a console string
void I_PrintStr (const char *cp);

// Set the title string of the startup window
void I_SetIWADInfo ();

// Pick from multiple IWADs to use
int I_PickIWad (WadStuff *wads, int numwads, bool queryiwad, int defaultiwad);

// The ini could not be saved at exit
bool I_WriteIniFailed ();

// [RH] Used by the display code to set the normal window procedure
void I_SetWndProc();

// [RH] Checks the registry for Steam's install path, so we can scan its
// directories for IWADs if the user purchased any through Steam.
TArray<FString> I_GetSteamPath();

// [GZ] Same deal for GOG paths
TArray<FString> I_GetGogPaths();

// Damn Microsoft for doing Get/SetWindowLongPtr half-assed. Instead of
// giving them proper prototypes under Win32, they are just macros for
// Get/SetWindowLong, meaning they take LONGs and not LONG_PTRs.
#ifdef _WIN64
typedef long long WLONG_PTR;
#elif _MSC_VER
typedef _W64 long WLONG_PTR;
#else
typedef long WLONG_PTR;
#endif

// Wrapper for GetLongPathName
FString I_GetLongPathName(const FString &shortpath);

// Mirror WIN32_FIND_DATAA in <winbase.h>
#ifndef MAX_PATH
#define MAX_PATH 260
#endif
#ifndef PATH_MAX
#define PATH_MAX 260
#endif

int I_GetNumaNodeCount();
int I_GetNumaNodeThreadCount(int numaNode);
void I_SetThreadNumaNode(std::thread &thread, int numaNode);
bool I_QueryPathKey(const wchar_t* keypath, const wchar_t* valname, FString& value);

#endif