/*
Copyright (C) 1999-2006 Id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

GtkRadiant 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/*
Camera plugin for GtkRadiant
Copyright (C) 2002 Splash Damage Ltd.
*/

#include "camera.h"

extern GtkWidget *g_pEditModeAddRadioButton;

char* Q_realpath(const char *path, char *resolved_path, size_t size)
{
#if defined(POSIX)
	return realpath(path, resolved_path);
#elif defined(WIN32)
	return _fullpath(resolved_path, path, size);
#else
#error "unsupported platform"
#endif
}

static void DoNewCamera( idCameraPosition::positionType type )
{
	CCamera *cam = AllocCam();

	if( cam ) {
		char buf[128];
		sprintf( buf, "camera%i", cam->GetCamNum() );

		cam->GetCam()->startNewCamera( type );
		cam->GetCam()->setName( buf );
		cam->GetCam()->buildCamera();

		sprintf( buf, "Unsaved Camera %i", cam->GetCamNum() );
		cam->SetFileName( buf, false );

		SetCurrentCam( cam );
		RefreshCamListCombo();

		// Go to editmode Add
		gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(g_pEditModeAddRadioButton), TRUE );

		// Show the camera inspector
		DoCameraInspector();

		// Start edit mode (if not initiated by DoCameraInspector)
		if( !g_bEditOn )
			DoStartEdit( GetCurrentCam() );
	} else {
      g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, "No free cameras available.", "Create Camera Error", eMB_OK );
	}
}

void DoNewFixedCamera()
{
	DoNewCamera( idCameraPosition::FIXED );
}

void DoNewInterpolatedCamera()
{
	DoNewCamera( idCameraPosition::INTERPOLATED );
}

void DoNewSplineCamera()
{
	DoNewCamera( idCameraPosition::SPLINE );
}

void DoCameraInspector()
{
  gtk_widget_show( g_pCameraInspectorWnd );
}

void DoPreviewCamera()
{
	if( GetCurrentCam() ) {
		g_iPreviewRunning = 1;
		g_FuncTable.m_pfnSysUpdateWindows( W_XY_OVERLAY | W_CAMERA );
	}
}

void DoLoadCamera()
{
  char basepath[PATH_MAX];

	if( firstCam && firstCam->HasBeenSaved() )
    ExtractFilePath( firstCam->GetFileName(), basepath );
  else
    strcpy( basepath, g_FuncTable.m_pfnGetGamePath() );

  const gchar *filename = g_FuncTable.m_pfnFileDialog( (GtkWidget *)g_pRadiantWnd, TRUE, "Open Camera File", basepath, "camera");

  if( filename )
	{
    CCamera *cam = AllocCam();
    char fullpathtofile[PATH_MAX];

    if( cam ) {
			Q_realpath(filename, fullpathtofile, PATH_MAX);

      // see if this camera file was already loaded
      CCamera *checkCam = firstCam->GetNext();  // not the first one as we just allocated it
      while( checkCam ) {
        if( !strcmp( fullpathtofile, checkCam->GetFileName() ) ) {
          char error[PATH_MAX+64];
          FreeCam( cam );
          sprintf( error, "Camera file \'%s\' is already loaded", fullpathtofile );
          g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, error, "Load error", eMB_OK );
          //g_free( filename );
          return;
        }
        checkCam = checkCam->GetNext();
      }

			if( loadCamera( cam->GetCamNum(), fullpathtofile ) ) {
				cam->GetCam()->buildCamera();
        cam->SetFileName( filename, true );
        SetCurrentCam( cam );
        RefreshCamListCombo();
        g_FuncTable.m_pfnSysUpdateWindows( W_XY_OVERLAY | W_CAMERA );
      } else {
        char error[PATH_MAX+64];
        FreeCam( cam );
        sprintf( error, "An error occured during the loading of \'%s\'", fullpathtofile );
        g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, error, "Load error", eMB_OK );
      }

      //g_free( filename );
    } else {
      g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, "No free camera slots available", "Load error", eMB_OK );
	  }
	}
}

void DoSaveCamera() {
  char basepath[PATH_MAX];

  if( !GetCurrentCam() )
    return;

  if( GetCurrentCam()->GetFileName()[0] )
    ExtractFilePath( GetCurrentCam()->GetFileName(), basepath );
  else
    strcpy( basepath, g_FuncTable.m_pfnGetGamePath() );

  const gchar *filename = g_FuncTable.m_pfnFileDialog( g_pRadiantWnd, FALSE, "Save Camera File", basepath, "camera");

  if( filename ) {
    char fullpathtofile[PATH_MAX + 8];

    Q_realpath(filename, fullpathtofile, PATH_MAX);

		// File dialog from windows (and maybe the gtk one from radiant) doesn't handle default extensions properly.
		// Add extension and check again if file exists
		if( strcmp( fullpathtofile + (strlen(fullpathtofile) - 7), ".camera" ) ) {
			strcat( fullpathtofile, ".camera" );

			if( FileExists( fullpathtofile ) ) {
				if( g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, "File already exists.\nOverwrite?", "Save Camera File", eMB_YESNO ) == eIDNO ) 
					return;
			}
		}

	  // see if this camera file was already loaded
    CCamera *checkCam = firstCam;
    while( checkCam ) {
      if( checkCam == GetCurrentCam() ) {
        checkCam = checkCam->GetNext();
				if( !checkCam )	// we only have one camera file opened so no need to check further
					break;
      } else if( !strcmp( fullpathtofile, checkCam->GetFileName() ) ) {
        char error[PATH_MAX+64];
        sprintf( error, "Camera file \'%s\' is currently loaded by GtkRadiant.\nPlease select a different filename.", fullpathtofile );
        g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, error, "Save error", eMB_OK );
        return;
      }
      checkCam = checkCam->GetNext();
    }

    // FIXME: check for existing directory

    GetCurrentCam()->GetCam()->save( fullpathtofile );
		GetCurrentCam()->SetFileName( fullpathtofile, true );
		RefreshCamListCombo();
  }
}

void DoUnloadCamera() {
  if( !GetCurrentCam() )
    return;

	if( !GetCurrentCam()->HasBeenSaved() ) {
		char buf[PATH_MAX+64];
		sprintf( buf, "Do you want to save the changes for camera '%s'?", GetCurrentCam()->GetCam()->getName() );
		if( g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, buf, "Warning", eMB_YESNO ) == eIDYES ) 
			DoSaveCamera();
	} else if( GetCurrentCam()->HasBeenSaved() == 2 ) {
		char buf[PATH_MAX+64];
		sprintf( buf, "Do you want to save the changes made to camera file '%s'?", GetCurrentCam()->GetFileName() );
		if( g_FuncTable.m_pfnMessageBox( (GtkWidget *)g_pRadiantWnd, buf, "Warning", eMB_YESNO ) == eIDYES ) 
			DoSaveCamera();
	}

  if( g_pCurrentEditCam ) {
    DoStopEdit();
    g_pCurrentEditCam = NULL;
  }

	FreeCam( GetCurrentCam() );
	SetCurrentCam( NULL );
	RefreshCamListCombo();
}

CCamera *g_pCurrentEditCam = NULL;

void DoStartEdit( CCamera *cam ) {
  if( g_pCurrentEditCam ) {
    DoStopEdit();
    g_pCurrentEditCam = NULL;
  }

  if( cam ) {
    g_bEditOn = true;

    if( !Listener )
      Listener = new CListener;

    cam->GetCam()->startEdit( g_iActiveTarget < 0 ? true : false );

    g_pCurrentEditCam = cam;

    g_FuncTable.m_pfnSysUpdateWindows( W_XY_OVERLAY | W_CAMERA );
  }
}

void DoStopEdit( void ) {
  g_bEditOn = false;

  if( Listener ) {
      delete Listener;
      Listener = NULL;
  }

  if( g_pCurrentEditCam ) {
    // stop editing on the current cam
    g_pCurrentEditCam->GetCam()->stopEdit();
    g_pCurrentEditCam = NULL;

    g_FuncTable.m_pfnSysUpdateWindows( W_XY_OVERLAY | W_CAMERA );
  }
}