! Stitch nest
!
! Combines velocity fields from a coarse model and n nests at one level finer to
! update the surface positions and temperatures in the coarse model
!
! dwhipp - 06/11

program stitch_nest

use definitions
use threads

implicit none

! Variable type declaration
character (len=4) :: cistep,cnnest

double precision :: current_time,inc,step,total

integer :: err,i,istep,material0,nnest

type (box),dimension(:),allocatable :: boxes
type (cloud),dimension(:),allocatable :: ss_cl
type (cloud) :: ls_cl
type (cross_section),dimension(:),allocatable :: sections
type (face),dimension(6) :: cube_faces
type (material),dimension(:),allocatable::mat
type (nest_info) nest
type (octreev),dimension(:),allocatable :: ss_ov
type (octreev) ls_ov
type (parameters) :: params
type (sheet),dimension(:),allocatable :: ls_surf,ls_surf0,ss_surf,ss_surf0
type (thread) :: threadinfo
type (ziso) zi

!-------------------------------------------------------------------------------

write (*,*) 'Program started'

! Init some variables
current_time=0.d0
inc=0.d0
step=0.d0
total=0.d0

! Read/echo current time step and # of nests from command line
call getarg (1,cistep)
call getarg (2,cnnest)
write (*,*) 'Received command line arguments:'
write (*,*) 'istep = ',trim(cistep)
write (*,*) 'nnest = ',trim(cnnest)

! Convert character values to integers
write (istep,'(i)') cistep
write (nnest,'(i)') cnnest

! Read the coarse model input file
params%infile=trim('input_ls.txt')
call read_controlling_parameters (params,threadinfo,'main')
allocate (ls_surf  (params%ns),stat=err); if (err.ne.0) call stop_run ('Error alloc ls_surf in main$')
allocate (ls_surf0 (params%ns),stat=err); if (err.ne.0) call stop_run ('Error alloc ls_surf0 in main$')
call read_input_file (params,threadinfo,material0,mat,ls_surf,boxes,sections,  &
                      cube_faces,nest)

! Modify params%restartfile to read previous restart file
if (istep > 1) then
  call int_to_char (cistep,4,istep-1)
  params%restartfile='OUT/time_'//cistep//'.bin'
endif

! Read the previous coarse model restart file if istep > 1, define surface,
! cloud and ov
call define_surface (params,ls_surf,threadinfo,total,step,inc,current_time)
call define_cloud (ls_cl,params,zi)
call define_ov (ls_ov,params,threadinfo)

! Read the coarse model restart file from the current time step

! Loop through fine model(s) and read their current restart files
do i = 1,nnest
  ! Change params%infile
enddo

deallocate(ls_surf,ls_surf0)

! Sign off
write (*,*) 'Program execution complete'
end