/*
 * Audio management UI code
 *
 * Copyright 2004 Chris Morgan
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "config.h"
#include "wine/port.h"

#include <assert.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <windef.h>
#include <winbase.h>
#include <winreg.h>
#include <wine/debug.h>
#include <shellapi.h>
#include <objbase.h>
#include <shlguid.h>
#include <shlwapi.h>
#include <shlobj.h>
#include <mmsystem.h>

#include "winecfg.h"
#include "resource.h"

WINE_DEFAULT_DEBUG_CHANNEL(winecfg);

static const char* DSound_HW_Accels[] = {
  "Full",
  "Standard",
  "Basic",
  "Emulation",
  NULL
};

/* Select the correct entry in the combobox based on drivername */
static void selectAudioDriver(HWND hDlg, const char *drivername)
{
  int i;
  const AUDIO_DRIVER *pAudioDrv = NULL;

  if ((pAudioDrv = getAudioDrivers()))
  {
    for (i = 0; *pAudioDrv->szName; i++, pAudioDrv++)
    {
      if (!strcmp (pAudioDrv->szDriver, drivername))
      {
	set_reg_key(config_key, "Drivers", "Audio", (char *) pAudioDrv->szDriver);
        SendMessage(GetParent(hDlg), PSM_CHANGED, (WPARAM) hDlg, 0); /* enable apply button */
	SendDlgItemMessage(hDlg, IDC_AUDIO_DRIVER, CB_SETCURSEL,
			   (WPARAM) i, 0);
      }
    }
  }
}

static void configureAudioDriver(HWND hDlg, const char *drivername)
{
  int i;
  const AUDIO_DRIVER *pAudioDrv = NULL;

  if ((pAudioDrv = getAudioDrivers()))
  {
    for (i = 0; *pAudioDrv->szName; i++, pAudioDrv++)
    {
      if (!strcmp (pAudioDrv->szDriver, drivername))
      {
        if (strlen(pAudioDrv->szDriver) != 0)
        {
          HDRVR hdrvr;
	  char wine_driver[MAX_NAME_LENGTH + 8];
	  sprintf(wine_driver, "wine%s.drv", pAudioDrv->szDriver);
          hdrvr = OpenDriverA(wine_driver, 0, 0);
	  if (hdrvr != 0)
	  {
	    if (SendDriverMessage(hdrvr, DRV_QUERYCONFIGURE, 0, 0) != 0)
	    {
              DRVCONFIGINFO dci;
              LONG lRes;
              dci.dwDCISize = sizeof (dci);
              dci.lpszDCISectionName = NULL;
              dci.lpszDCIAliasName = NULL;
              lRes = SendDriverMessage(hdrvr, DRV_CONFIGURE, 0, (LONG)&dci);
	    }
	    CloseDriver(hdrvr, 0, 0);
	  }
          else
          {
	    char str[1024];
	    sprintf(str, "Couldn't open %s!", wine_driver);
	    MessageBox(NULL, str, "Fixme", MB_OK | MB_ICONERROR);
          }
	}
	break;
      }
    }
  }
}

static void initAudioDlg (HWND hDlg)
{
    char *curAudioDriver = get_reg_key(config_key, "Drivers", "Audio", "alsa");
    const AUDIO_DRIVER *pAudioDrv = NULL;
    int i;
    char* buf = NULL;

    WINE_TRACE("\n");

    pAudioDrv = getAudioDrivers ();
    for (i = 0; *pAudioDrv->szName; i++, pAudioDrv++) {
        SendDlgItemMessage (hDlg, IDC_AUDIO_DRIVER, CB_ADDSTRING, 
                0, (LPARAM) pAudioDrv->szName);
        if (!strcmp (pAudioDrv->szDriver, curAudioDriver)) {
            SendDlgItemMessage(hDlg, IDC_AUDIO_DRIVER, CB_SETCURSEL, i, 0);
        }
    }


    SendDlgItemMessage(hDlg, IDC_DSOUND_HW_ACCEL, CB_RESETCONTENT, 0, 0);
    for (i = 0; NULL != DSound_HW_Accels[i]; ++i) {
      SendDlgItemMessage(hDlg, IDC_DSOUND_HW_ACCEL, CB_ADDSTRING, 0, (LPARAM) DSound_HW_Accels[i]);
    }    
    buf = get_reg_key(config_key, keypath("DirectSound"), "HardwareAcceleration", "Full"); 
    for (i = 0; NULL != DSound_HW_Accels[i]; ++i) {
      if (strcmp(buf, DSound_HW_Accels[i]) == 0) {
	SendDlgItemMessage(hDlg, IDC_DSOUND_HW_ACCEL, CB_SETCURSEL, i, 0);
	break ;
      }
    }
    if (NULL == DSound_HW_Accels[i]) {
      WINE_ERR("Invalid Direct Sound HW Accel read from registry (%s)\n", buf);
    }
    HeapFree(GetProcessHeap(), 0, buf);

    buf = get_reg_key(config_key, keypath("DirectSound"), "EmulDriver", "N");
    if (IS_OPTION_TRUE(*buf))
      CheckDlgButton(hDlg, IDC_DSOUND_DRV_EMUL, BST_CHECKED);
    else
      CheckDlgButton(hDlg, IDC_DSOUND_DRV_EMUL, BST_UNCHECKED);
    HeapFree(GetProcessHeap(), 0, buf);

}

static const char *audioAutoDetect(void)
{
  struct stat buf;
  const char *argv_new[4];
  int fd;

  const char *driversFound[10];
  const char *name[10];
  int numFound = 0;

  argv_new[0] = "/bin/sh";
  argv_new[1] = "-c";
  argv_new[3] = NULL;

  /* try to detect oss */
  fd = open("/dev/dsp", O_WRONLY | O_NONBLOCK);
  if(fd)
  {
    close(fd);
    driversFound[numFound] = "oss";
    name[numFound] = "OSS";
    numFound++;
  }
  
    /* try to detect alsa */
  if(!stat("/proc/asound", &buf))
  {
    driversFound[numFound] = "alsa";
    name[numFound] = "ALSA";
    numFound++;
  }

  /* try to detect arts */
  argv_new[2] = "ps awx|grep artsd|grep -v grep|grep artsd > /dev/null";
  if(!spawnvp(_P_WAIT, "/bin/sh", argv_new))
  {
    driversFound[numFound] = "arts";
    name[numFound] = "aRts";
    numFound++;
  }

  /* try to detect jack */
  argv_new[2] = "ps awx|grep jackd|grep -v grep|grep jackd > /dev/null";
  if(!spawnvp(_P_WAIT, "/bin/sh", argv_new))
  {
    driversFound[numFound] = "jack";
    name[numFound] = "JACK";
    numFound++;
  }

  /* try to detect EsounD */
  argv_new[2] = "ps awx|grep esd|grep -v grep|grep esd > /dev/null";
  if(!spawnvp(_P_WAIT, "/bin/sh", argv_new))
  {
    driversFound[numFound] = "esd";
    name[numFound] = "EsounD";
    numFound++;
  }

  /* try to detect nas */
  /* TODO */

  /* try to detect audioIO (solaris) */
  /* TODO */

  if(numFound == 0)
  {
    MessageBox(NULL, "Could not detect any audio devices/servers", "Failed", MB_OK);
    return "";
  }
  else
  {
    /* TODO: possibly smarter handling of multiple drivers? */
    char text[128];
    snprintf(text, sizeof(text), "Found %s", name[0]);
    MessageBox(NULL, (LPCTSTR)text, "Successful", MB_OK);
    return driversFound[0];
  }
}


INT_PTR CALLBACK
AudioDlgProc (HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
  switch (uMsg) {
      case WM_COMMAND:
	switch (LOWORD(wParam)) {
	   case IDC_AUDIO_AUTODETECT:
	      selectAudioDriver(hDlg, audioAutoDetect());
	      break;
	   case IDC_AUDIO_DRIVER:
	     if ((HIWORD(wParam) == CBN_SELCHANGE) ||
		 (HIWORD(wParam) == CBN_SELCHANGE))
	     {
		const AUDIO_DRIVER *pAudioDrv = getAudioDrivers();
		int selected_driver = SendDlgItemMessage(hDlg, IDC_AUDIO_DRIVER, CB_GETCURSEL, 0, 0);
		selectAudioDriver(hDlg, (char*)pAudioDrv[selected_driver].szDriver);
	     }
	     break;
          case IDC_AUDIO_CONFIGURE:
	     {
		const AUDIO_DRIVER *pAudioDrv = getAudioDrivers();
		int selected_driver = SendDlgItemMessage(hDlg, IDC_AUDIO_DRIVER, CB_GETCURSEL, 0, 0);
		configureAudioDriver(hDlg, (char*)pAudioDrv[selected_driver].szDriver);
	     }
	     break;
          case IDC_AUDIO_CONTROL_PANEL:
	     MessageBox(NULL, "Launching audio control panel not implemented yet!", "Fixme", MB_OK | MB_ICONERROR);
             break;
          case IDC_DSOUND_HW_ACCEL:
	    if (HIWORD(wParam) == CBN_SELCHANGE) {
	      int selected_dsound_accel;
	      SendMessage(GetParent(hDlg), PSM_CHANGED, 0, 0);
	      selected_dsound_accel = SendDlgItemMessage(hDlg, IDC_DSOUND_HW_ACCEL, CB_GETCURSEL, 0, 0);
	      set_reg_key(config_key, keypath("DirectSound"), "HardwareAcceleration", DSound_HW_Accels[selected_dsound_accel]); 
	    }
	    break;
          case IDC_DSOUND_DRV_EMUL:
	    if (HIWORD(wParam) == BN_CLICKED) {
	      SendMessage(GetParent(hDlg), PSM_CHANGED, 0, 0); 
	      if (IsDlgButtonChecked(hDlg, IDC_DSOUND_DRV_EMUL) == BST_CHECKED)
		set_reg_key(config_key, keypath("DirectSound"), "EmulDriver", "Y");
	      else
		set_reg_key(config_key, keypath("DirectSound"), "EmulDriver", "N");
	    }
	    break;
	}
	break;

      case WM_SHOWWINDOW:
        set_window_title(hDlg);
        break;
        
      case WM_NOTIFY:
	switch(((LPNMHDR)lParam)->code) {
	    case PSN_KILLACTIVE:
	      SetWindowLongPtr(hDlg, DWLP_MSGRESULT, FALSE);
	      break;
	    case PSN_APPLY:
              apply();
	      SetWindowLongPtr(hDlg, DWLP_MSGRESULT, PSNRET_NOERROR);
	      break;
	    case PSN_SETACTIVE:
	      break;
	}
	break;

  case WM_INITDIALOG:
    initAudioDlg(hDlg);
    break;
  }

  return FALSE;
}