MODULE step_c1d
   !!======================================================================
   !!                       ***  MODULE step_c1d  ***
   !! Time-stepping    : manager of the ocean, tracer and ice time stepping - c1d case
   !!======================================================================
   !! History :   2.0  !  2004-04  (C. Ethe)  adapted from step.F90 for C1D
   !!             3.0  !  2008-04  (G. Madec)  redo the adaptation to include SBC
   !!----------------------------------------------------------------------
#if defined key_c1d
   !!----------------------------------------------------------------------
   !!   'key_c1d'                                       1D Configuration
   !!----------------------------------------------------------------------  
   !!   stp_c1d        : NEMO system time-stepping in c1d case
   !!----------------------------------------------------------------------
   USE step_oce        ! time stepping definition modules 
   !LB:USE dyncor_c1d      ! Coriolis term (c1d case)         (dyn_cor_1d     )
   !LB:USE dynnxt          ! time-stepping                    (dyn_nxt routine)
   !LB:USE dyndmp          ! U & V momentum damping           (dyn_dmp routine)
   USE restart         ! restart 

   IMPLICIT NONE
   PRIVATE

   PUBLIC   stp_c1d   ! called by nemogcm.F90

   !!----------------------------------------------------------------------
   !! NEMO/OCE 4.0 , NEMO Consortium (2018)
   !! $Id: step_c1d.F90 10068 2018-08-28 14:09:04Z nicolasmartin $
   !! Software governed by the CeCILL license (see ./LICENSE)
   !!----------------------------------------------------------------------
CONTAINS

   SUBROUTINE stp_c1d( kstp )
      !!----------------------------------------------------------------------
      !!                     ***  ROUTINE stp_c1d  ***
      !!                      
      !! ** Purpose :  - Time stepping of SBC including sea ice (dynamic and thermodynamic eqs.)
      !!               - Time stepping of OPA (momentum and active tracer eqs.)
      !!               - Time stepping of TOP (passive tracer eqs.)
      !! 
      !! ** Method  : -1- Update forcings and data  
      !!              -2- Update vertical ocean physics 
      !!              -3- Compute the t and s trends 
      !!              -4- Update t and s 
      !!              -5- Compute the momentum trends
      !!              -6- Update the horizontal velocity
      !!              -7- Compute the diagnostics variables (rd,N2, div,cur,w)
      !!              -8- Outputs and diagnostics
      !!----------------------------------------------------------------------
      INTEGER, INTENT(in) ::   kstp   ! ocean time-step index
      !
      INTEGER ::   jk       ! dummy loop indice
      INTEGER ::   indic    ! error indicator if < 0
      !! ---------------------------------------------------------------------

                             indic = 0                ! reset to no error condition
      IF( kstp == nit000 )   CALL iom_init( "nemo")   ! iom_put initialization (must be done after nemo_init for AGRIF+XIOS+OASIS)
      IF( kstp /= nit000 )   CALL day( kstp )         ! Calendar (day was already called at nit000 in day_init)
                             CALL iom_setkt( kstp - nit000 + 1, "nemo" )   ! say to iom that we are at time step kstp

                             CALL sbc    ( kstp )         ! Sea Boundary Condition (including sea-ice)

                             CALL dia_wri( kstp )         ! ocean model: outputs

                             
      !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
      ! Control
      !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
      !LOLO:                       
                            ! LOLO: should write a stp_ctl, who checks on flux realism (current SAS version checks ice fields...)
                            ! CALL stp_ctl( kstp, indic )
      !IF( indic < 0  )  THEN
      !                       CALL ctl_stop( 'step: indic < 0' )
      !                       CALL dia_wri_state( 'output.abort' )
      !ENDIF
      !LOLO.
                             
      IF( kstp == nit000   ) CALL iom_close( numror )     ! close input  ocean restart file

      !LOLO: from C1D:
      IF( lrst_oce       )   CALL rst_write( kstp )        ! write output ocean restart file
      !
#if defined key_iomput
      IF( kstp == nitend .OR. indic < 0 )   CALL xios_context_finalize()   ! needed for XIOS
#endif

      !LOLO: from SAS"
!#if defined key_iomput
!      IF( kstp == nitrst ) THEN
!         IF(.NOT.lwxios) THEN
!            CALL iom_close( numrow )
!         ELSE
!            CALL iom_context_finalize( cwxios_context )
!         ENDIF
!         lrst_oce = .FALSE.
!      ENDIF
!      IF( kstp == nitend .OR. indic < 0 ) THEN
!                             CALL iom_context_finalize( cxios_context ) ! needed for XIOS+AGRIF
!      ENDIF
!#endif
!      !
!      IF( ln_timing .AND.  kstp == nit000  )   CALL timing_reset
      !
   END SUBROUTINE stp_c1d

#else
   !!----------------------------------------------------------------------                                                                     
   !!   Default key                                            NO 1D Config                                                                     
   !!----------------------------------------------------------------------                                                                     
CONTAINS
   SUBROUTINE stp_c1d ( kt )      ! dummy routine                                                                                               
      IMPLICIT NONE
      INTEGER, INTENT( in ) :: kt
      WRITE(*,*) 'stp_c1d: You should not have seen this print! error?', kt
   END SUBROUTINE stp_c1d
#endif
   
   !!======================================================================
END MODULE step_c1d