/*------------------------------------------------------------------------
              C h o p p e r C o n t r o l l e r

 Implementation file for the SICS chopper controller and general controller
 device. For details about this object and its relation with the SICS system 
 see choco.w or choco.tex.

 Mark Koennecke, January 1998
-------------------------------------------------------------------------*/
#include <stdlib.h>
#include <tcl.h>
#include <assert.h>
#include "fortify.h"
#include "sics.h"
#include "site.h"
#define CHOCOINTERNAL
#include "choco.h"



/*------------------------------------------------------------------------*/
int CHGetParameter(pChoco self, char *parname, char *pParValue,
                   int iBuflen)
{
  int iRet, iCode;

  assert(self);

  iRet = self->pDriv->GetPar(self->pDriv, parname, pParValue, iBuflen);
  if (!iRet) {
    iRet = 0;
    self->pDriv->GetError(self->pDriv, &iCode, pParValue, iBuflen);
  }
  return iRet;
}

/*------------------------------------------------------------------------*/
pCodri CHGetDriver(pChoco self)
{
  assert(self);

  return self->pDriv;
}

/*------------------------------------------------------------------------*/
int CHList(pChoco self, SConnection * pCon, char *name)
{
  char *pPar, *pCopy = NULL;
  char pValue[80];
  char pMessage[256];
  int iRet, iLen;
  Tcl_DString tlist;

  assert(self);

  /* copy pParList as it will be destroyed by strtok */
  iLen = strlen(self->pDriv->pParList);
  pCopy = (char *) malloc((iLen + 10) * sizeof(char));
  if (!pCopy) {
    SCWrite(pCon, "ERROR: out of memory in CHList", eError);
    return 0;
  }
  memset(pCopy, 0, iLen + 10);
  strcpy(pCopy, self->pDriv->pParList);
  Tcl_DStringInit(&tlist);

  pPar = strtok(pCopy, ",");
  while (pPar != NULL) {
    iRet = CHGetParameter(self, pPar, pValue, 79);
    if (iRet) {
      sprintf(pMessage, "%s.%s = %s \n", name, pPar, pValue);
    } else {
      sprintf(pMessage, "ERROR: %s : while reading parameter %s \n",
              pValue, pPar);
    }
    Tcl_DStringAppend(&tlist, pMessage, -1);
    pPar = strtok(NULL, ",");
  }
  SCWrite(pCon, Tcl_DStringValue(&tlist), eValue);
  Tcl_DStringFree(&tlist);
  free(pCopy);
  return 1;
}

/*-----------------------------------------------------------------------*/
int ChocoAction(SConnection * pCon, SicsInterp * pSics, void *pData,
                int argc, char *argv[])
{
  pChoco self = NULL;
  char pValue[80], pMessage[256];
  int iRet;

  self = (pChoco) pData;
  assert(self);

  if (argc < 2) {
    snprintf(pMessage,255, "ERROR: argument required for %s", argv[0]);
    SCWrite(pCon, pMessage, eError);
    return 0;
  }

  /* argument can either be list or parameter name */
  strtolower(argv[1]);
  if (strcmp(argv[1], "list") == 0) {
    return CHList(self, pCon, argv[0]);
  } else {
    if (argc > 2) {
      /* set case */
      iRet = self->pDriv->SetPar2(self->pDriv, argv[1], argv[2]);
      if (!iRet) {
        self->pDriv->GetError(self->pDriv, &iRet, pValue, 79);
        sprintf(pMessage, "ERROR: %s", pValue);
        SCWrite(pCon, pMessage, eError);
        return 0;
      } else {
        SCSendOK(pCon);
        return 1;
      }
    } else {
      /* get case */
      iRet = CHGetParameter(self, argv[1], pValue, 79);
      if (iRet) {
        sprintf(pMessage, "%s.%s = %s", argv[0], argv[1], pValue);
      } else {
        sprintf(pMessage, "ERROR: %s : while reading parameter %s",
                pValue, argv[1]);
      }
      SCWrite(pCon, pMessage, eValue);
      return iRet;
    }
  }
  return 0;
}

/*----------------------------------------------------------------------*/
void KillChoco(void *pData)
{
  pChoco self = NULL;

  self = (pChoco) pData;
  if (!self)
    return;

  if (self->pDriv) {
    self->pDriv->Close(self->pDriv);
    self->pDriv->Delete(self->pDriv);
    free(self->pDriv);
  }
  if (self->pDes)
    DeleteDescriptor(self->pDes);

  free(self);
}

/*-----------------------------------------------------------------------
      DRIVERS
*/

extern pCodri MakeSimChopper(void);
/*-----------------------------------------------------------------------*/
int ChocoFactory(SConnection * pCon, SicsInterp * pSics, void *pData,
                 int argc, char *argv[])
{
  pChoco pNew = NULL;
  pCodri pDriv = NULL;
  pObjectDescriptor pDes = NULL;
  char pBueffel[132];
  int iRet, iPort, iChannel;
  int iSingle = 0;
  pSite site = NULL;

  if (argc < 3) {
    SCWrite(pCon,
            "ERROR: Insufficient number of arguments to MakeController",
            eError);
    return 0;
  }


  /* first try to get everything done */
  pNew = (pChoco) malloc(sizeof(Choco));
  pDes = CreateDescriptor("Chopper");
  /* do driver */
  strtolower(argv[2]);
  if (strcmp(argv[2], "sim") == 0) {
    pDriv = MakeSimChopper();
  } else {
    site = getSite();
    if (site != NULL) {
      pDriv = site->CreateControllerDriver(pCon, argc - 2, &argv[2]);
    } else {
      pDriv = NULL;
    }
    if (pDriv == NULL) {
      snprintf(pBueffel,131,
              "ERROR: Driver %s NOT supported for MakeController",
              argv[2]);
      SCWrite(pCon, pBueffel, eError);
      return 0;
    }
  }
  if ((pNew == NULL) || (pDes == NULL) || (pDriv == NULL)) {
    SCWrite(pCon, "ERROR: No memory left to create controller", eError);
    return 0;
  }
  pNew->pDes = pDes;
  pNew->pDriv = pDriv;

  /* initialize driver */
  iRet = pDriv->Init(pDriv);
  if (!iRet) {
    SCWrite(pCon, "ERROR: Failed to initialize driver", eError);
    KillChoco(pNew);
    return 0;
  }

  /* install as command */
  iRet = AddCommand(pSics, argv[1], ChocoAction, KillChoco, pNew);
  if (!iRet) {
    snprintf(pBueffel, 131, "ERROR: duplicate command %s NOT created", argv[1]);
    SCWrite(pCon, pBueffel, eError);
    return 0;
  }
  return 1;
}