#define XVT_INCL_NATIVE
#define WIN32_LEAN_AND_MEAN
#include <os_dep.h>    

#include <ctype.h>

#include <applicat.h>
#include <config.h>
#include <utility.h>
#include <window.h>

///////////////////////////////////////////////////////////
// Operating system dependent functions
///////////////////////////////////////////////////////////

bool os_destroy_native_icon(unsigned icon)
{
  return DestroyIcon((HICON)icon) != 0;
}

void os_draw_native_icon(WINDOW win, const RCT& rct, unsigned icon)
{  
  HDC hdc = (HDC)xvt_vobj_get_attr(win, ATTR_NATIVE_GRAPHIC_CONTEXT);
  int x = (rct.right + rct.left - 32) / 2;
  int y = (rct.bottom + rct.top - 32) / 2;
  DrawIcon(hdc, x, y, (HICON)icon);
}

int os_execute(const TFilename& path, bool sync, bool iconizetask, bool showchild)
{
  int exitcode = -1;

  STARTUPINFO start; 
  PROCESS_INFORMATION pi;

  memset(&start, 0, sizeof(start));
  start.cb = sizeof(start);
  start.dwX = start.dwY = start.dwXSize = start.dwYSize = CW_USEDEFAULT;
  start.dwFlags = STARTF_USESHOWWINDOW;
  start.wShowWindow = showchild ? SW_SHOW : SW_HIDE;
  BOOL started = CreateProcess(NULL,(char*)(const char*)path, NULL, NULL, FALSE, 0,
                               NULL, NULL, &start, &pi); 
  if (started)
  {
    HANDLE hProcess = pi.hProcess;

    if (sync)
    {
      ATOM aBa0Atom = NULL;
      if (iconizetask && showchild && main_app().name() == "ba0100")
      {
        TString str;
        str << "ba0100->" << cmd2name(path);
        aBa0Atom = GlobalAddAtom(str);
      }

      WaitForInputIdle(hProcess, INFINITE);

      bool was_maximized = FALSE;
      if (iconizetask)
      {
        TTemp_window tw(TASK_WIN);
        RCT rct_scr, rct_tsk;
        xvt_vobj_get_client_rect(SCREEN_WIN, &rct_scr);
        xvt_vobj_get_client_rect(tw.win(), &rct_tsk);
        was_maximized = rct_scr.right == rct_tsk.right;
        tw.iconize();
        tw.deactivate();
      }  

      if (WaitForSingleObject(hProcess, INFINITE) != 0xFFFFFFFF)
      {
        unsigned long exit_code;
        if (GetExitCodeProcess(hProcess, &exit_code))
          exitcode = int(exit_code);
        else
          exitcode = -2;
      }

      if (aBa0Atom)
        GlobalDeleteAtom(aBa0Atom);

      if (iconizetask)
      {
        TTemp_window tw(TASK_WIN);
        if (was_maximized)
          tw.maximize();
        else
          os_restore_window(tw.win());
        tw.activate();
//        do_events(); non si puo fare qui'"
      }  
    }
    else
      exitcode = 0;
    CloseHandle(pi.hThread);
    CloseHandle(hProcess);
  }
  else
  {
    exitcode = GetLastError();
    error_box("Impossibile eseguire '%s': %d", (const char*)path, exitcode);
  }

  return exitcode;
}

int os_get_printer_names(TToken_string& t)
{
  char* buf = t.get_buffer(4096); // ammazzao'
  GetProfileString("devices", NULL, "", buf, t.size());
  for (int i = 0; i < t.size(); i++)
  {
    if (buf[i] == '\0')
    {
      if (buf[i+1] != '\0') 
        buf[i] = t.separator();
      else 
        break;
    }  
  }
  return t.items();
}

bool os_set_default_printer(const char* name)
{                  
  CHECK(name && *name > ' ', "Null printer name");
  TString pdev(name);
  if (pdev.find(',') < 0)
  {
    TString szDevice(256);  
    GetProfileString ("devices", pdev, "", szDevice.get_buffer(), szDevice.size());
    pdev << ',' << szDevice;
  }  
  bool ok = WriteProfileString("windows", "device", pdev) != 0;  
  return ok;  
}

bool os_get_default_printer(TString& name)
{
  char* buf = name.get_buffer(256);
  bool ok = GetProfileString ("windows", "device", ",,,", buf, name.size()) != 0;
  return ok;
}

bool os_spawn_by_menu()
{
  bool ok = true;
#ifndef DBG
  TString16 str = main_app().name();
  ok = str == "ba0100";
  if (!ok)
  {
    str.insert("ba0100->", 0);
    ok = GlobalFindAtom(str) != NULL;
  }
#endif
  return ok;
}

void os_iconize_window(WINDOW win)
{
  HWND hwnd = (HWND)xvt_vobj_get_attr(win, ATTR_NATIVE_WINDOW);
  ShowWindow(hwnd, SW_MINIMIZE);
}

void os_maximize_window(WINDOW win)
{
  HWND hwnd = (HWND)xvt_vobj_get_attr(win, ATTR_NATIVE_WINDOW);
  HWND twin = (HWND)xvt_vobj_get_attr(TASK_WIN, ATTR_NATIVE_WINDOW);
  if (hwnd != twin)
  {
    HWND pare = GetParent(hwnd);
    RECT rct; GetClientRect(pare, &rct);
    if (pare == twin)
      rct.bottom -= 24;
    SetWindowPos(hwnd, pare, 
                 rct.left, rct.top, rct.right, rct.bottom,
                 SWP_NOZORDER);
  }
  else
    ShowWindow(hwnd, SW_SHOWMAXIMIZED);
}

void os_restore_window(WINDOW win)
{
  HWND hwnd = (HWND)xvt_vobj_get_attr(win, ATTR_NATIVE_WINDOW);
  ShowWindow(hwnd, SW_NORMAL);
}

bool os_dongle_server_running()
{
  ATOM a = GlobalFindAtom("DONGLE_SERVER_ATOM");
  return a != 0;
}

HIDDEN const char* _file_to_find = NULL;

struct TFindWindowInfo
{ 
  HINSTANCE _instance;
  TFilename _file;
  HWND _hwnd;
  
  TFindWindowInfo() : _instance(NULL), _hwnd(NULL) { }
};

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
  TFindWindowInfo* w = (TFindWindowInfo*)lParam;

  HINSTANCE inst = (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE);
  if (inst == w->_instance)
  {         
    const LONG style = GetWindowLong(hwnd, GWL_STYLE);
    if ((style & WS_CAPTION) != 0)  // Ha la caption?
    {
      w->_hwnd = hwnd;
      return FALSE;
    }
    return TRUE;  
  }  

  TString256 str;
  GetWindowText(hwnd, str.get_buffer(), str.size());
  str.upper();
  if (str.find(w->_file) >= 0)
  {
    w->_hwnd = hwnd;
    return FALSE;
  }

  return TRUE;
}

unsigned long os_execute_in_window(const TFilename& path, WINDOW win)
{
  const unsigned long exitcode = WinExec(path, SW_SHOWNORMAL);
  if (exitcode < 32)
    return 0;

  TFindWindowInfo w;
  w._instance = (HINSTANCE) exitcode;

  const int space = path.find(' ');
  if (space > 0)
    w._file = path.mid(space+1);
  else
    w._file = path;
  w._file = w._file.name();
  w._file.ext("");
  w._file.upper();

  const clock_t start = clock();
  while (w._hwnd == NULL && (clock() - start) < 10*CLOCKS_PER_SEC)
  { 
    xvt_app_process_pending_events();
    EnumWindows(EnumWindowsProc, LPARAM(&w));
  }  

  if (w._hwnd != NULL)  // L'ho trovata!
  {                                                          
    RCT rct; xvt_vobj_get_client_rect(win, &rct);
    HWND nat = (HWND)xvt_vobj_get_attr(win, ATTR_NATIVE_WINDOW);
    SetParent(w._hwnd, nat);
//    LONG style = GetWindowLong(w._hwnd, GWL_STYLE);
//    style |= WS_CHILD;
//    SetWindowLong(w._hwnd, GWL_STYLE, style);
    const int fx = GetSystemMetrics(SM_CXFRAME);
    const int fy = GetSystemMetrics(SM_CYFRAME);
    int cy = GetSystemMetrics(SM_CYCAPTION)+GetSystemMetrics(SM_CYBORDER);
    if (GetMenu(w._hwnd) != NULL) 
      cy += GetSystemMetrics(SM_CYMENU);
    SetWindowPos(w._hwnd, nat, -fx, -fy-cy, rct.right+2*fx, rct.bottom+cy+2*fy, SWP_NOZORDER);
  }
  
  return (unsigned long) w._hwnd;
}