!===================================================================================================================================
! Copyright (c) 2025 GVEC Contributors, Max Planck Institute for Plasma Physics
! License: MIT
!===================================================================================================================================
#include "defines.FPP"

MODULE MODgvec_py_run

#ifndef NOISOENV
USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : INPUT_UNIT, OUTPUT_UNIT, ERROR_UNIT
#endif
USE MODgvec_Globals, ONLY: enter_subregion,exit_subregion,reset_subregion

IMPLICIT NONE
PUBLIC

LOGICAL :: initialized = .FALSE.

CONTAINS

!================================================================================================================================!
SUBROUTINE start_rungvec(parameterfile,restartfile_in,comm_in)
  ! MODULES
  USE MODgvec_Globals, ONLY: Unit_stdOut
  USE MODgvec_MPI    , ONLY: par_Init,par_finalize
  USE MODgvec_rungvec, ONLY: rungvec
  ! INPUT/OUTPUT VARIABLES ------------------------------------------------------------------------------------------------------!
  CHARACTER(LEN=*),INTENT(IN) :: parameterfile
  CHARACTER(LEN=*),INTENT(IN),OPTIONAL :: restartfile_in
  INTEGER,INTENT(IN),OPTIONAL :: comm_in
  ! LOCAL VARIABLES -------------------------------------------------------------------------------------------------------------!
  INTEGER :: comm
  ! CODE ------------------------------------------------------------------------------------------------------------------------!
  CALL reset_subregion()
  CALL enter_subregion("startup")
  initialized = .TRUE.
  IF(PRESENT(comm_in)) THEN
    CALL par_init(comm_in)
  ELSE
    CALL par_init() !USE MPI_COMM_WORLD
  END IF
  CALL exit_subregion("startup")
  IF(PRESENT(restartfile_in))THEN
    CALL rungvec(parameterfile,restartfile_in=restartfile_in)
  ELSE
    CALL rungvec(parameterfile)
  END IF

  CALL par_finalize()
  initialized = .FALSE.
END SUBROUTINE start_rungvec

!================================================================================================================================!
SUBROUTINE cleanup()
  ! MODULES
  USE MODgvec_Globals    , ONLY: n_warnings_occured
  USE MODgvec_MPI        , ONLY: par_finalize
  USE MODgvec_ReadInTools, ONLY: FinalizeReadIn
  USE MODgvec_Analyze    , ONLY: FinalizeAnalyze
  USE MODgvec_Output     , ONLY: FinalizeOutput
  USE MODgvec_Restart    , ONLY: FinalizeRestart
  USE MODgvec_ReadInTools, ONLY: FinalizeReadIn
  USE MODgvec_rungvec,     ONLY: functional
  ! CODE ------------------------------------------------------------------------------------------------------------------------!
  IF (ALLOCATED(functional)) THEN
    CALL functional%free()
    DEALLOCATE(functional)
  END IF
  CALL FinalizeAnalyze()
  CALL FinalizeOutput()
  CALL FinalizeRestart()
  CALL FinalizeReadIn()

  CALL par_finalize()
  initialized = .FALSE.
  n_warnings_occured = 0
END SUBROUTINE cleanup
END MODULE MODgvec_py_run