// user32.c - Win32 User Interface
#include <stdint.h>
#include <stddef.h>

extern void SysYield(void);
extern void SysDebugPrint(const char* str);

typedef void* HWND;
typedef void* HDC;
typedef long  LONG;
typedef int   BOOL;

typedef struct _RECT { LONG left, top, right, bottom; } RECT;
typedef struct tagPAINTSTRUCT {
    HDC hdc; BOOL fErase; RECT rcPaint; BOOL fRestore; BOOL fIncUpdate; char res[32];
} PAINTSTRUCT;

// --- Painting Functions ---
__declspec(dllexport) HDC BeginPaint(HWND hwnd, PAINTSTRUCT* lpPaint) {
    (void)hwnd;
    if (lpPaint) {
        lpPaint->hdc = (HDC)1;
        lpPaint->rcPaint.right = 1920; lpPaint->rcPaint.bottom = 1080;
    }
    return (HDC)1;
}

__declspec(dllexport) BOOL EndPaint(HWND hwnd, const PAINTSTRUCT* lp) { (void)hwnd; (void)lp; return 1; }

// --- Message Loop Stubs ---
__declspec(dllexport) int GetMessage(void* m, HWND h, uint32_t f, uint32_t l) {
    (void)m; (void)h; (void)f; (void)l; SysYield(); return 0;
}
__declspec(dllexport) int PeekMessage(void* m, HWND h, uint32_t f, uint32_t l, uint32_t r) {
    (void)m; (void)h; (void)f; (void)l; (void)r;
    return 0;
}
__declspec(dllexport) int DispatchMessage(const void* m) { (void)m; return 0; }
__declspec(dllexport) int TranslateMessage(const void* m) { (void)m; return 0; }

// --- Dialogs & UI ---
__declspec(dllexport) int MessageBoxA(HWND h, const char* txt, const char* cap, uint32_t type) {
    (void)h; (void)cap; (void)type;
    SysDebugPrint("USER32: MessageBoxA: ");
    SysDebugPrint(txt);
    SysDebugPrint("\n");
    return 1; // IDOK
}

// --- Window Queries ---
__declspec(dllexport) HWND GetDesktopWindow(void) { return (HWND)0; }
__declspec(dllexport) HWND GetActiveWindow(void)  { return (HWND)0; }
__declspec(dllexport) HWND GetTopWindow(HWND hwnd){ (void)hwnd; return (HWND)0; }

__declspec(dllexport) HWND GetWindow(HWND hwnd, unsigned int cmd) {
    (void)hwnd; (void)cmd; return (HWND)0;
}

__declspec(dllexport) long GetWindowLongA(HWND hwnd, int index) {
    (void)hwnd; (void)index; return 0;
}

__declspec(dllexport) intptr_t GetWindowLongPtrA(HWND hwnd, int index) {
    (void)hwnd; (void)index; return 0;
}

__declspec(dllexport) unsigned long GetWindowThreadProcessId(HWND hwnd, unsigned long* pid) {
    (void)hwnd;
    if (pid) *pid = 1;
    return 1; // Thread ID
}