/*
   Copyright (C) 2013  Equinor ASA, Norway.

   The file 'well_segment_conn_load.c' is part of ERT - Ensemble based Reservoir Tool.

   ERT is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   ERT is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.

   See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
   for more details.
*/
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>

#include <ert/util/test_util.hpp>
#include <ert/util/stringlist.hpp>
#include <ert/util/util.h>

#include <ert/ecl/ecl_util.hpp>
#include <ert/ecl/ecl_file.hpp>
#include <ert/ecl/ecl_rsthead.hpp>
#include <ert/ecl/ecl_kw_magic.hpp>
#include <ert/ecl/ecl_grid.hpp>

#include <ert/ecl_well/well_conn_collection.hpp>
#include <ert/ecl_well/well_segment.hpp>
#include <ert/ecl_well/well_const.hpp>
#include <ert/ecl_well/well_segment_collection.hpp>
#include <ert/ecl_well/well_rseg_loader.hpp>


int main(int argc , char ** argv) {
  const char * Xfile = argv[1];
  ecl_file_type * rst_file = ecl_file_open( Xfile , 0 );
  ecl_file_view_type * rst_view = ecl_file_get_active_view( rst_file );
  ecl_rsthead_type * rst_head = ecl_rsthead_alloc( rst_view , ecl_util_filename_report_nr(Xfile));
  const ecl_kw_type * iwel_kw = ecl_file_iget_named_kw( rst_file , IWEL_KW , 0 );
  const ecl_kw_type * iseg_kw = ecl_file_iget_named_kw( rst_file , ISEG_KW , 0 );
  well_rseg_loader_type * rseg_loader = well_rseg_loader_alloc(rst_view);
  const ecl_kw_type * icon_kw = ecl_file_iget_named_kw( rst_file , ICON_KW , 0 );
  const ecl_kw_type * scon_kw = NULL;
  const ecl_kw_type * xcon_kw = NULL;

  test_install_SIGNALS();
  test_assert_not_NULL( rst_file );
  test_assert_not_NULL( rst_head );
  {
    int well_nr;
    for (well_nr = 0; well_nr < rst_head->nwells; well_nr++) {
      well_conn_collection_type * connections = well_conn_collection_alloc();
      well_conn_collection_load_from_kw( connections , iwel_kw , icon_kw , scon_kw, xcon_kw, well_nr , rst_head);
      {
        well_segment_collection_type * segments = well_segment_collection_alloc();
        bool load_segment_information = true;
        bool is_MSW_well = false;

        if (well_segment_collection_load_from_kw( segments , well_nr , iwel_kw , iseg_kw , rseg_loader , rst_head , load_segment_information , &is_MSW_well)) {
          well_branch_collection_type * branches = well_branch_collection_alloc();

          test_assert_true( well_segment_well_is_MSW( well_nr , iwel_kw , rst_head));
          well_segment_collection_link( segments );
          {
            int is;
            for (is=0; is < well_segment_collection_get_size( segments ); is++) {
              well_segment_type * segment = well_segment_collection_iget( segments , is );

              if (well_segment_nearest_wellhead( segment ))
                test_assert_NULL( well_segment_get_outlet( segment ));
              else
                test_assert_not_NULL( well_segment_get_outlet( segment ));

              test_assert_int_not_equal( well_segment_get_id( segment ) , well_segment_get_outlet_id( segment ));
              test_assert_ptr_not_equal( segment , well_segment_get_outlet( segment ));
            }
          }
          well_segment_collection_add_branches( segments , branches );
          {
            int ib;
            for (ib = 0; ib < well_branch_collection_get_size( branches ); ib++) {
              const well_segment_type * start_segment = well_branch_collection_iget_start_segment( branches , ib );
              const well_segment_type * segment = start_segment;

              printf("Branch %d " , ib );
              while (segment) {
                printf("%d -> ",well_segment_get_id( segment ));
                segment = well_segment_get_outlet( segment );
              }
              printf(" X \n");
            }
          }
          well_segment_collection_add_connections( segments , ECL_GRID_GLOBAL_GRID , connections );
          well_branch_collection_free( branches );
        } else
          test_assert_false( well_segment_well_is_MSW( well_nr , iwel_kw , rst_head ));

        well_segment_collection_free( segments );
      }
      well_conn_collection_free( connections );
    }
  }

  ecl_file_close( rst_file );
  ecl_rsthead_free( rst_head );
  exit(0);
}
