/*--------------------------------------------------------------------------

   Tcl interface functions for the SINQ histogram memory.
   
   Mark Koennecke, April 1997
   
       Copyright:

       Labor fuer Neutronenstreuung
       Paul Scherrer Institut
       CH-5423 Villigen-PSI


      The authors hereby grant permission to use, copy, modify, distribute,
      and license this software and its documentation for any purpose, provided
      that existing copyright notices are retained in all copies and that this
      notice is included verbatim in any distributions. No written agreement,
      license, or royalty fee is required for any of the authorized uses.
      Modifications to this software may be copyrighted by their authors
      and need not follow the licensing terms described here, provided that
      the new terms are clearly indicated on the first page of each file where
      they apply.

      IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
      FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
      ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
      DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.

      THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
      FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
      IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
      NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
      MODIFICATIONS.
----------------------------------------------------------------------------*/
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <tcl.h>
#include "fupa.h"
#include "sinqhm.h"
/*  
  as you are reading this: check if the typedefs below match your machine
 */
typedef short int SQint16;      /* 16 bit integer */
typedef int SQint32;            /* 32 bit integer */

/*--------------------------------------------------------------------------*/
static void SINQKill(void *pData)
{
  pSINQHM self;

  self = (pSINQHM) pData;
  DeleteSINQHM(self);
}

/*--------------------------------------------------------------------------*/
static int DAQAction(ClientData pData, Tcl_Interp * interp,
                     int argc, char *argv[])
{

  pSINQHM self;
  int iMode, iDaq, iRank, iBin, iLength, iClients, iByte, i;
  FuPaResult PaRes;
  void *pBuffer;
  SQint16 *pPtr16;
  SQint32 *pPtr32;
  char *pPtr, *pVal;
  char pNumber[20];
  char pIndex[20];
  char **argx;
  int iRet, status, iVal;
  char pBueffel[256];
  FuncTemplate BufferTemplate[] = {
    {"read", 4, {FUPAINT, FUPAINT, FUPAINT, FUPATEXT}},
    {"write", 4, {FUPAINT, FUPAINT, FUPAINT, FUPATEXT}},
    {"zero", 3, {FUPAINT, FUPAINT, FUPAINT}},
    {"start", 0, {FUPATEXT}},
    {"stop", 0, {FUPATEXT}},
    {"inhibit", 0, {FUPATEXT}},
    {"continue", 0, {FUPATEXT}},
  };

  self = (pSINQHM) pData;
  assert(self);

  /* parse function args */
  argx = &argv[1];
  iRet =
      EvaluateFuPa((pFuncTemplate) & BufferTemplate, 7, argc - 1, argx,
                   &PaRes);
  if (iRet < 0) {
    Tcl_AppendResult(interp, PaRes.pError, NULL);
    return TCL_ERROR;
  }

  switch (iRet) {
  case 0:                      /* read */
    /* get status first, in order to get info */
    status = SINQHMGetStatus(self, &iMode, &iDaq,
                             &iRank, &iBin, &iLength, &iClients);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    /* calculate necessary buffer size */
    iByte = iBin * PaRes.Arg[2].iVal;
    pBuffer = NULL;
    pBuffer = malloc(iByte);
    if (!pBuffer) {
      Tcl_AppendResult(interp, "Out of memory in DAQAction", NULL);
      return TCL_ERROR;
    }

    /* read histogram's */
    status = SINQHMRead(self, PaRes.Arg[0].iVal,
                        PaRes.Arg[1].iVal, PaRes.Arg[2].iVal,
                        pBuffer, iByte);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }

    /* convert to list, depending on BinWidth */
    if (iBin == 1) {            /* char's */
      pPtr = (char *) pBuffer;
      for (i = 0; i < PaRes.Arg[2].iVal; i++, pPtr++) {
        snprintf(pNumber,sizeof(pNumber)-1, "%d", (int) *pPtr);
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        Tcl_SetVar2(interp, argv[5], pIndex, pNumber, TCL_LEAVE_ERR_MSG);
      }
      free(pBuffer);
    } else if (iBin == 2) {
      pPtr16 = (SQint16 *) pBuffer;
      for (i = 0; i < PaRes.Arg[2].iVal; i++, pPtr16++) {
        snprintf(pNumber,sizeof(pNumber)-1, "%d", (int) *pPtr16);
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        Tcl_SetVar2(interp, argv[5], pIndex, pNumber, TCL_LEAVE_ERR_MSG);
      }
      free(pBuffer);
    } else if (iBin == 4) {
      pPtr32 = (SQint32 *) pBuffer;
      for (i = 0; i < PaRes.Arg[2].iVal; i++, pPtr32++) {
        snprintf(pNumber,sizeof(pNumber)-1, "%d", (int) *pPtr32);
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        Tcl_SetVar2(interp, argv[5], pIndex, pNumber, TCL_LEAVE_ERR_MSG);
      }
      free(pBuffer);
    } else {
      Tcl_AppendResult(interp, "Invalid bin width in DAQAction", NULL);
      free(pBuffer);
      return TCL_ERROR;
    }
    break;
  case 1:                      /* write */
    /* get status first, in order to get info */
    status = SINQHMGetStatus(self, &iMode, &iDaq,
                             &iRank, &iBin, &iLength, &iClients);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }

    /* calculate necessary buffer size */
    iByte = iBin * PaRes.Arg[2].iVal;
    pBuffer = NULL;
    pBuffer = malloc(iByte);
    if (!pBuffer) {
      Tcl_AppendResult(interp, "Out of memory in DAQAction", NULL);
      return TCL_ERROR;
    }
    memset(pBuffer, 0, iByte);

    /* read data array into buffer, sorted for binwidth */
    if (iBin == 1) {
      pPtr = pBuffer;
      for (i = 0; i < PaRes.Arg[3].iVal; i++, pPtr++) {
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        pVal = Tcl_GetVar2(interp, argv[5], pIndex, TCL_LEAVE_ERR_MSG);
        if (pVal) {
          Tcl_GetInt(interp, pVal, &iVal);
          *pPtr = (char) iVal;
        }
      }
    } else if (iBin == 2) {
      pPtr16 = pBuffer;
      for (i = 0; i < PaRes.Arg[3].iVal; i++, pPtr16++) {
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        pVal = Tcl_GetVar2(interp, argv[5], pIndex, TCL_LEAVE_ERR_MSG);
        if (pVal) {
          Tcl_GetInt(interp, pVal, &iVal);
          *pPtr16 = iVal;
        }
      }
    } else if (iBin == 4) {
      pPtr32 = pBuffer;
      for (i = 0; i < PaRes.Arg[2].iVal; i++, pPtr32++) {
        snprintf(pIndex,sizeof(pIndex)-1, "%d", i);
        pVal = Tcl_GetVar2(interp, argv[5], pIndex, TCL_LEAVE_ERR_MSG);
        if (pVal) {
          Tcl_GetInt(interp, pVal, &iVal);
          *pPtr32 = iVal;
        }
      }
    } else {
      Tcl_AppendResult(interp, "Invalid bin width in DAQAction", NULL);
      free(pBuffer);
      return TCL_ERROR;
    }

    /* write ! */
    status = SINQHMWrite(self, PaRes.Arg[0].iVal,
                         PaRes.Arg[1].iVal, PaRes.Arg[2].iVal, pBuffer);
    free(pBuffer);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 2:                      /* zero */
    status = SINQHMZero(self, PaRes.Arg[0].iVal,
                        PaRes.Arg[1].iVal, PaRes.Arg[2].iVal);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 3:                      /* start */
    status = SINQHMStartDAQ(self);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 4:                      /* stop */
    status = SINQHMStopDAQ(self);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 5:                      /* inhibit */
    status = SINQHMInhibitDAQ(self);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 6:                      /* continue */
    status = SINQHMContinueDAQ(self);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  default:
    Tcl_AppendResult(interp, "Internal error in DAQAction", NULL);
    return TCL_ERROR;
  }
  return TCL_OK;
}

/*--------------------------------------------------------------------------*/
static int Text2Mode(char *text)
{
  char *pText[] = {
    "SQHM_TRANS",
    "SQHM_HM_DIG",
    "SQHM_HM_PSD",
    "SQHM_HM_TOF",
    NULL
  };
  int i = 0;
  while (pText[i] != NULL) {
    if (strcmp(text, pText[i]) == 0) {
      break;
    }
    i++;
  }

  switch (i) {
  case 0:
    return SQHM__TRANS;
    break;
  case 1:
    return SQHM__HM_DIG;
    break;
  case 2:
    return SQHM__HM_PSD;
    break;
  case 3:
    return SQHM__TOF;
    break;
  default:
    return -1;
  }
  return -1;
}

/*--------------------------------------------------------------------------*/
static int Text2Modifier(char *text)
{
  char *pText[] = {
    "SQHM_DEBUG",
    "SQHM_UD",
    "SQHM_CNT_OR",
    "SQHM_BO_MSK",
    "SQHM_BO_IGN",
    "SQHM_BO_SMAX",
    "SQHM_BO_CNT",
    "SQHM_STROBO",
    "NULL",
    NULL
  };
  int i = 0;
  while (pText[i] != NULL) {
    if (strcmp(text, pText[i]) == 0) {
      break;
    }
    i++;
  }

  switch (i) {
  case 0:
    return SQHM__DEBUG;
    break;
  case 1:
    return SQHM__UD;
    break;
  case 2:
    return SQHM__CNT_OR;
    break;
  case 3:
    return SQHM__BO_MSK;
    break;
  case 4:
    return SQHM__BO_IGN;
    break;
  case 5:
    return SQHM__BO_SMAX;
    break;
  case 6:
    return SQHM__BO_CNT;
    break;
  case 7:
    return SQHM__STROBO;
    break;
  case 8:
    return 0;
    break;
  default:
    return -1;
  }
  return -1;
}

/*--------------------------------------------------------------------------*/
static int ControlAction(ClientData pData, Tcl_Interp * interp,
                         int argc, char *argv[])
{
  int iRet;
  int status;
  char **argx;
  int iMode, iModifier, iDaq, iRank, iBin, iLength, iClients;
  pSINQHM self;
  pSINQHM pNew = NULL;
  char pBueffel[256];
  FuPaResult PaRes;
  FuncTemplate BufferTemplate[] = {
    {"config", 5, {FUPATEXT, FUPATEXT, FUPAINT, FUPAINT, FUPAINT}},
    {"deconfig", 1, {FUPAINT}},
    {"debug", 1, {FUPAINT}},
    {"exit", 0, {FUPATEXT}},
    {"DAQ", 1, {FUPATEXT}},
    {"status", 0, {FUPATEXT}},
    {"delDAQ", 1, {FUPATEXT}}
  };

  self = (pSINQHM) pData;
  assert(self);

  /* parse function args */
  argx = &argv[1];
  iRet =
      EvaluateFuPa((pFuncTemplate) & BufferTemplate, 6, argc - 1, argx,
                   &PaRes);
  if (iRet < 0) {
    Tcl_AppendResult(interp, PaRes.pError, NULL);
    return TCL_ERROR;
  }

  switch (iRet) {
  case 0:                      /* config */
    iMode = Text2Mode(PaRes.Arg[0].text);
    if (iMode < 0) {
      Tcl_AppendResult(interp, "Invalid Mode parameter", NULL);
      return TCL_ERROR;
    }
    iModifier = Text2Modifier(PaRes.Arg[1].text);
    if (iModifier < 0) {
      Tcl_AppendResult(interp, "Invalid Modifier parameter", NULL);
      return TCL_ERROR;
    }
    iMode = iMode | iModifier;
    status = SINQHMConfigure(self, iMode,
                             PaRes.Arg[2].iVal, PaRes.Arg[3].iVal,
                             PaRes.Arg[4].iVal, 0, 0);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 1:                      /* deconfig */
    status = SINQHMDeconfigure(self, PaRes.Arg[0].iVal);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 2:                      /* debug */
    status = SINQHMDebug(self, PaRes.Arg[0].iVal);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 3:                      /* exit */
    status = SINQHMKill(self);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    break;
  case 4:                      /* DAQ */
    pNew = CopySINQHM(self);
    if (!pNew) {
      Tcl_AppendResult(interp, "Memory error in ControlAction", NULL);
      return TCL_ERROR;
    }
    status = SINQHMOpenDAQ(pNew);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      DeleteSINQHM(pNew);
      return TCL_ERROR;
    }

    /* initialise internal data fields */
    status = SINQHMGetStatus(self, &iMode, &iDaq,
                             &iRank, &iBin, &iLength, &iClients);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    SINQHMSetPar(pNew, iRank, iLength, iBin);
    Tcl_CreateCommand(interp, strdup(argv[2]), DAQAction, pNew, SINQKill);
    break;
  case 5:                      /* status */
    status = SINQHMGetStatus(self, &iMode, &iDaq,
                             &iRank, &iBin, &iLength, &iClients);
    if (status < 0) {
      SINQHMError2Text(status, pBueffel, 131);
      Tcl_AppendResult(interp, pBueffel, NULL);
      return TCL_ERROR;
    }
    snprintf(pBueffel,sizeof(pBueffel)-1,
            "Mode = %d, DAQ = %d, Rank = %d, BinWidth = %d, Length = %d, NoClients = %d",
            iMode, iDaq, iRank, iBin, iLength, iClients);
    Tcl_AppendResult(interp, pBueffel, NULL);
    break;
  case 6:                      /* delDAQ */
    return Tcl_DeleteCommand(interp, PaRes.Arg[0].text);
  default:
    Tcl_AppendResult(interp, "Internal error in ControlAction", NULL);
    return TCL_ERROR;
  }
  return TCL_OK;
}

/*-------------------------------------------------------------------------*/
int SINQHM(ClientData pData, Tcl_Interp * interp, int argc, char *argv[])
{
  int iPort, status;
  pSINQHM pNew = NULL;

  /* check arguments, first number */
  if (argc < 4) {
    Tcl_AppendResult(interp, "Insufficient number of arguments to ",
                     argv[0], NULL);
    return TCL_ERROR;
  }

  /* last argument must be port number */
  status = Tcl_GetInt(interp, argv[3], &iPort);
  if (status != TCL_OK) {
    return status;
  }

  /* open the HM */
  pNew = CreateSINQHM(argv[2], iPort);
  if (!pNew) {
    Tcl_AppendResult(interp, "Error allocating SINQHM datastructure",
                     NULL);
    return TCL_ERROR;
  }

  /* install the command */
  Tcl_CreateCommand(interp, argv[1], ControlAction, pNew, SINQKill);
  return TCL_OK;
}