#include <petsc/private/fortranimpl.h>
#include <petscts.h>
#include <petscviewer.h>
#include <petsc/private/f90impl.h>

#if defined(PETSC_HAVE_FORTRAN_CAPS)
#define tsmonitorlgsettransform_             TSMONITORLGSETTRANSFORM
#define tssetrhsfunction_                    TSSETRHSFUNCTION
#define tsgetrhsfunction_                    TSGETRHSFUNCTION
#define tssetrhsjacobian_                    TSSETRHSJACOBIAN
#define tsgetrhsjacobian_                    TSGETRHSJACOBIAN
#define tssetifunction_                      TSSETIFUNCTION
#define tsgetifunction_                      TSGETIFUNCTION
#define tssetijacobian_                      TSSETIJACOBIAN
#define tsgetijacobian_                      TSGETIJACOBIAN
#define tsview_                              TSVIEW
#define tssetoptionsprefix_                  TSSETOPTIONSPREFIX
#define tsgetoptionsprefix_                  TSGETOPTIONSPREFIX
#define tsappendoptionsprefix_               TSAPPENDOPTIONSPREFIX
#define tsmonitorset_                        TSMONITORSET
#define tscomputerhsfunctionlinear_          TSCOMPUTERHSFUNCTIONLINEAR
#define tscomputerhsjacobianconstant_        TSCOMPUTERHSJACOBIANCONSTANT
#define tscomputeifunctionlinear_            TSCOMPUTEIFUNCTIONLINEAR
#define tscomputeijacobianconstant_          TSCOMPUTEIJACOBIANCONSTANT
#define tsmonitordefault_                    TSMONITORDEFAULT
#define tssetprestep_                        TSSETPRESTEP
#define tssetpoststep_                       TSSETPOSTSTEP
#define tsviewfromoptions_                   TSVIEWFROMOPTIONS
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define tsmonitorlgsettransform_             tsmonitorlgsettransform
#define tssetrhsfunction_                    tssetrhsfunction
#define tsgetrhsfunction_                    tsgetrhsfunction
#define tssetrhsjacobian_                    tssetrhsjacobian
#define tsgetrhsjacobian_                    tsgetrhsjacobian
#define tssetifunction_                      tssetifunction
#define tsgetifunction_                      tsgetifunction
#define tssetijacobian_                      tssetijacobian
#define tsgetijacobian_                      tsgetijacobian
#define tsview_                              tsview
#define tssetoptionsprefix_                  tssetoptionsprefix
#define tsgetoptionsprefix_                  tsgetoptionsprefix
#define tsappendoptionsprefix_               tsappendoptionsprefix
#define tsmonitorset_                        tsmonitorset
#define tscomputerhsfunctionlinear_          tscomputerhsfunctionlinear
#define tscomputerhsjacobianconstant_        tscomputerhsjacobianconstant
#define tscomputeifunctionlinear_            tscomputeifunctionlinear
#define tscomputeijacobianconstant_          tscomputeijacobianconstant
#define tsmonitordefault_                    tsmonitordefault
#define tssetprestep_                        tssetprestep
#define tssetpoststep_                       tssetpoststep
#define tsviewfromoptions_                   tsviewfromoptions
#endif

static struct {
  PetscFortranCallbackId prestep;
  PetscFortranCallbackId poststep;
  PetscFortranCallbackId rhsfunction;
  PetscFortranCallbackId rhsjacobian;
  PetscFortranCallbackId ifunction;
  PetscFortranCallbackId ijacobian;
  PetscFortranCallbackId monitor;
  PetscFortranCallbackId mondestroy;
  PetscFortranCallbackId transform;
#if defined(PETSC_HAVE_F90_2PTR_ARG)
  PetscFortranCallbackId function_pgiptr;
#endif
} _cb;

static PetscErrorCode ourprestep(TS ts)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.prestep,(TS*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}
static PetscErrorCode ourpoststep(TS ts)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.poststep,(TS*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}
static PetscErrorCode ourrhsfunction(TS ts,PetscReal d,Vec x,Vec f,void *ctx)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.rhsfunction,(TS*,PetscReal*,Vec*, Vec*, void*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&d,&x,&f,_ctx,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}
static PetscErrorCode ourifunction(TS ts,PetscReal d,Vec x,Vec xdot,Vec f,void *ctx)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.ifunction,(TS*,PetscReal*,Vec*, Vec*, Vec*, void*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&d,&x,&xdot,&f,_ctx,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}
static PetscErrorCode ourrhsjacobian(TS ts,PetscReal d,Vec x,Mat m,Mat p,void *ctx)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.rhsjacobian,(TS*,PetscReal*, Vec*, Mat*, Mat*, void*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&d,&x,&m,&p,_ctx,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}
static PetscErrorCode ourijacobian(TS ts,PetscReal d,Vec x,Vec xdot,PetscReal shift,Mat m,Mat p,void *ctx)
{
#if defined(PETSC_HAVE_F90_2PTR_ARG) && defined(foo)
  void* ptr;
  PetscObjectGetFortranCallback((PetscObject)ts,PETSC_FORTRAN_CALLBACK_CLASS,_cb.function_pgiptr,NULL,&ptr);
#endif
  PetscObjectUseFortranCallback(ts,_cb.ijacobian,(TS*,PetscReal*,Vec*, Vec*, PetscReal *,Mat*, Mat*, void*,PetscErrorCode* /* PETSC_F90_2PTR_PROTO_NOVAR */),(&ts,&d,&x,&xdot,&shift,&m,&p,_ctx,&ierr /* PETSC_F90_2PTR_PARAM(ptr) */));
}

static PetscErrorCode ourmonitordestroy(void **ctx)
{
  TS ts = (TS)*ctx;
  PetscObjectUseFortranCallback(ts,_cb.mondestroy,(void*,PetscErrorCode*),(_ctx,&ierr));
}

/*
   Note ctx is the same as ts so we need to get the Fortran context out of the TS
*/
static PetscErrorCode ourmonitor(TS ts,PetscInt i,PetscReal d,Vec v,void *ctx)
{
  PetscObjectUseFortranCallback(ts,_cb.monitor,(TS*,PetscInt*,PetscReal*,Vec *,void*,PetscErrorCode*),(&ts,&i,&d,&v,_ctx,&ierr));
}

/*
   Currently does not handle destroy or context
*/
static PetscErrorCode ourtransform(void *ctx,Vec x,Vec *xout)
{
  PetscObjectUseFortranCallback((TS)ctx,_cb.transform,(void*,Vec *,Vec *,PetscErrorCode*),(_ctx,&x,xout,&ierr));
}

PETSC_EXTERN void tsmonitorlgsettransform_(TS *ts,void (*f)(void*,Vec*,Vec*,PetscErrorCode*),PetscErrorCode (*d)(void*,PetscErrorCode*),void *ctx,PetscErrorCode *ierr)
{
  *ierr = TSMonitorLGSetTransform(*ts,ourtransform,NULL,NULL); if (*ierr) return;
  *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.transform,(PetscVoidFunction)f,ctx);
}

PETSC_EXTERN void tssetprestep_(TS *ts,PetscErrorCode (*f)(TS*,PetscErrorCode*),PetscErrorCode *ierr)
{
  *ierr = TSSetPreStep(*ts,ourprestep);if (*ierr) return;
  *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.prestep,(PetscVoidFunction)f,NULL);
}

PETSC_EXTERN void tssetpoststep_(TS *ts,PetscErrorCode (*f)(TS*,PetscErrorCode*),PetscErrorCode *ierr)
{
  *ierr = TSSetPostStep(*ts,ourpoststep);if (*ierr) return;
  *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.poststep,(PetscVoidFunction)f,NULL);
}

PETSC_EXTERN void tscomputerhsfunctionlinear_(TS *ts,PetscReal *t,Vec *X,Vec *F,void *ctx,PetscErrorCode *ierr)
{
  *ierr = TSComputeRHSFunctionLinear(*ts,*t,*X,*F,ctx);
}
PETSC_EXTERN void tssetrhsfunction_(TS *ts,Vec *r,PetscErrorCode (*f)(TS*,PetscReal*,Vec*,Vec*,void*,PetscErrorCode*),void *fP,PetscErrorCode *ierr)
{
  Vec R;
  CHKFORTRANNULLOBJECT(r);
  CHKFORTRANNULLFUNCTION(f);
  R = r ? *r : (Vec)NULL;
  if ((PetscVoidFunction)f == (PetscVoidFunction)tscomputerhsfunctionlinear_) {
    *ierr = TSSetRHSFunction(*ts,R,TSComputeRHSFunctionLinear,fP);
  } else {
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.rhsfunction,(PetscVoidFunction)f,fP);
    *ierr = TSSetRHSFunction(*ts,R,ourrhsfunction,NULL);
  }
}
PETSC_EXTERN void tsgetrhsfunction_(TS *ts,Vec *r,void *func,void **ctx,PetscErrorCode *ierr)
{
  CHKFORTRANNULLINTEGER(ctx);
  CHKFORTRANNULLOBJECT(r);
  *ierr = TSGetRHSFunction(*ts,r,NULL,ctx);
}

PETSC_EXTERN void tscomputeifunctionlinear_(TS *ts,PetscReal *t,Vec *X,Vec *Xdot,Vec *F,void *ctx,PetscErrorCode *ierr)
{
  *ierr = TSComputeIFunctionLinear(*ts,*t,*X,*Xdot,*F,ctx);
}
PETSC_EXTERN void tssetifunction_(TS *ts,Vec *r,PetscErrorCode (*f)(TS*,PetscReal*,Vec*,Vec*,Vec*,void*,PetscErrorCode*),void *fP,PetscErrorCode *ierr)
{
  Vec R;
  CHKFORTRANNULLOBJECT(r);
  CHKFORTRANNULLFUNCTION(f);
  R = r ? *r : (Vec)NULL;
  if ((PetscVoidFunction)f == (PetscVoidFunction)tscomputeifunctionlinear_) {
    *ierr = TSSetIFunction(*ts,R,TSComputeIFunctionLinear,fP);
  } else {
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.ifunction,(PetscVoidFunction)f,fP);
    *ierr = TSSetIFunction(*ts,R,ourifunction,NULL);
  }
}
PETSC_EXTERN void tsgetifunction_(TS *ts,Vec *r,void *func,void **ctx,PetscErrorCode *ierr)
{
  CHKFORTRANNULLINTEGER(ctx);
  CHKFORTRANNULLOBJECT(r);
  *ierr = TSGetIFunction(*ts,r,NULL,ctx);
}

/* ---------------------------------------------------------*/
PETSC_EXTERN void tscomputerhsjacobianconstant_(TS *ts,PetscReal *t,Vec *X,Mat *A,Mat *B,void *ctx,PetscErrorCode *ierr)
{
  *ierr = TSComputeRHSJacobianConstant(*ts,*t,*X,*A,*B,ctx);
}
PETSC_EXTERN void tssetrhsjacobian_(TS *ts,Mat *A,Mat *B,void (*f)(TS*,PetscReal*,Vec*,Mat*,Mat*,void*,PetscErrorCode*),void *fP,PetscErrorCode *ierr)
{
  CHKFORTRANNULLFUNCTION(f);
  if ((PetscVoidFunction)f == (PetscVoidFunction)tscomputerhsjacobianconstant_) {
    *ierr = TSSetRHSJacobian(*ts,*A,*B,TSComputeRHSJacobianConstant,fP);
  } else {
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.rhsjacobian,(PetscVoidFunction)f,fP);
    *ierr = TSSetRHSJacobian(*ts,*A,*B,ourrhsjacobian,NULL);
  }
}

PETSC_EXTERN void tscomputeijacobianconstant_(TS *ts,PetscReal *t,Vec *X,Vec *Xdot,PetscReal *shift,Mat *A,Mat *B,void *ctx,PetscErrorCode *ierr)
{
  *ierr = TSComputeIJacobianConstant(*ts,*t,*X,*Xdot,*shift,*A,*B,ctx);
}
PETSC_EXTERN void tssetijacobian_(TS *ts,Mat *A,Mat *B,void (*f)(TS*,PetscReal*,Vec*,Mat*,Mat*,void*,PetscErrorCode*),void *fP,PetscErrorCode *ierr)
{
  CHKFORTRANNULLFUNCTION(f);
  if ((PetscVoidFunction)f == (PetscVoidFunction)tscomputeijacobianconstant_) {
    *ierr = TSSetIJacobian(*ts,*A,*B,TSComputeIJacobianConstant,fP);
  } else {
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.ijacobian,(PetscVoidFunction)f,fP);
    *ierr = TSSetIJacobian(*ts,*A,*B,ourijacobian,NULL);
  }
}
PETSC_EXTERN void tsgetijacobian_(TS *ts,Mat *J,Mat *M,int *func,void **ctx,PetscErrorCode *ierr)
{
  CHKFORTRANNULLINTEGER(ctx);
  CHKFORTRANNULLOBJECT(J);
  CHKFORTRANNULLOBJECT(M);
  *ierr = TSGetIJacobian(*ts,J,M,0,ctx);
}

PETSC_EXTERN void tsmonitordefault_(TS *ts,PetscInt *its,PetscReal *fgnorm,Vec *u,PetscViewerAndFormat **dummy,PetscErrorCode *ierr)
{
  *ierr = TSMonitorDefault(*ts,*its,*fgnorm,*u,*dummy);
}

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

/* PETSC_EXTERN void tsmonitordefault_(TS*,PetscInt*,PetscReal*,Vec*,void*,PetscErrorCode*); */

PETSC_EXTERN void tsmonitorset_(TS *ts,void (*func)(TS*,PetscInt*,PetscReal*,Vec*,void*,PetscErrorCode*),void *mctx,void (*d)(void*,PetscErrorCode*),PetscErrorCode *ierr)
{
  CHKFORTRANNULLFUNCTION(d);
  if ((PetscVoidFunction)func == (PetscVoidFunction) tsmonitordefault_) {
    *ierr = TSMonitorSet(*ts,(PetscErrorCode (*)(TS,PetscInt,PetscReal,Vec,void*))TSMonitorDefault,*(PetscViewerAndFormat**)mctx,(PetscErrorCode (*)(void **))PetscViewerAndFormatDestroy);
  } else {
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.monitor,(PetscVoidFunction)func,mctx);
    *ierr = PetscObjectSetFortranCallback((PetscObject)*ts,PETSC_FORTRAN_CALLBACK_CLASS,&_cb.mondestroy,(PetscVoidFunction)d,mctx);
    *ierr = TSMonitorSet(*ts,ourmonitor,*ts,ourmonitordestroy);
  }
}

/* ---------------------------------------------------------*/
/*  func is currently ignored from Fortran */
PETSC_EXTERN void tsgetrhsjacobian_(TS *ts,Mat *J,Mat *M,int *func,void **ctx,PetscErrorCode *ierr)
{
  *ierr = TSGetRHSJacobian(*ts,J,M,0,ctx);
}

PETSC_EXTERN void tsview_(TS *ts,PetscViewer *viewer, PetscErrorCode *ierr)
{
  PetscViewer v;
  PetscPatchDefaultViewers_Fortran(viewer,v);
  *ierr = TSView(*ts,v);
}

PETSC_EXTERN void tssetoptionsprefix_(TS *ts,char* prefix,PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  char *t;
  FIXCHAR(prefix,len,t);
  *ierr = TSSetOptionsPrefix(*ts,t);if (*ierr) return;
  FREECHAR(prefix,t);
}
PETSC_EXTERN void tsgetoptionsprefix_(TS *ts,char* prefix,PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  const char *tname;

  *ierr = TSGetOptionsPrefix(*ts,&tname);
  *ierr = PetscStrncpy(prefix,tname,len);
  FIXRETURNCHAR(PETSC_TRUE,prefix,len);
}
PETSC_EXTERN void tsappendoptionsprefix_(TS *ts,char* prefix,PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  char *t;
  FIXCHAR(prefix,len,t);
  *ierr = TSAppendOptionsPrefix(*ts,t);if (*ierr) return;
  FREECHAR(prefix,t);
}

PETSC_EXTERN void tsviewfromoptions_(TS *ao,PetscObject obj,char* type,PetscErrorCode *ierr,PETSC_FORTRAN_CHARLEN_T len)
{
  char *t;

  FIXCHAR(type,len,t);
  CHKFORTRANNULLOBJECT(obj);
  *ierr = TSViewFromOptions(*ao,obj,t);if (*ierr) return;
  FREECHAR(type,t);
}