#!/bin/sh

if [ ! -f libjavalammps.so ]
then \
    echo "Need to compile 'libjavalammps.so' first for this script to work"
    exit 1
fi

cat > example.java <<EOF
public class example {
  static {
    System.loadLibrary("javalammps");
  }

  public static void main(String argv[]) {
    SWIGTYPE_p_void lmp = javalammps.lammps_open_no_mpi(0, null, null);
    int ver = javalammps.lammps_version(lmp);

    int npair_styles = javalammps.lammps_style_count(lmp, "pair");
    System.out.println("LAMMPS includes " + npair_styles + " pair styles");

    javalammps.lammps_command(lmp, "units real");
    javalammps.lammps_command(lmp, "lattice fcc 2.5");
    javalammps.lammps_command(lmp, "region box block -5 5 -5 5 -5 5");
    javalammps.lammps_command(lmp, "create_box 1 box");
    javalammps.lammps_command(lmp, "create_atoms 1 box");

    SWIGTYPE_p_double boxlo_p = javalammps.new_double_1d(3);
    SWIGTYPE_p_double boxhi_p = javalammps.new_double_1d(3);
    SWIGTYPE_p_double xy_p = javalammps.new_double_p();
    SWIGTYPE_p_double yz_p = javalammps.new_double_p();
    SWIGTYPE_p_double xz_p = javalammps.new_double_p();
    SWIGTYPE_p_int pflags_p = javalammps.new_int_1d(3);
    SWIGTYPE_p_int boxflag_p = javalammps.new_int_p();

    javalammps.lammps_extract_box(lmp, boxlo_p, boxhi_p, xy_p, yz_p, xz_p, pflags_p, boxflag_p);
    System.out.println("boxlo:    " + javalammps.double_1d_getitem(boxlo_p, 0) + " " + javalammps.double_1d_getitem(boxlo_p, 1) + " " + javalammps.double_1d_getitem(boxlo_p, 2));
    System.out.println("boxhi:    " + javalammps.double_1d_getitem(boxhi_p, 0) + " " + javalammps.double_1d_getitem(boxhi_p, 1) + " " + javalammps.double_1d_getitem(boxhi_p, 2));
    System.out.println("xy/yz/xz: " + javalammps.double_p_value(xy_p) + " " + javalammps.double_p_value(yz_p) + " " + javalammps.double_p_value(xz_p));
    System.out.println("periodicity: " + javalammps.int_1d_getitem(pflags_p, 0) + " " + javalammps.int_1d_getitem(pflags_p, 1) + " " + javalammps.int_1d_getitem(pflags_p, 2));
    System.out.println("boxflag:  " + javalammps.int_p_value(boxflag_p));
    javalammps.delete_double_1d(boxlo_p);
    javalammps.delete_double_1d(boxhi_p);
    javalammps.delete_int_1d(pflags_p);
    javalammps.delete_double_p(xy_p);
    javalammps.delete_double_p(yz_p);
    javalammps.delete_double_p(xz_p);
    javalammps.delete_int_p(boxflag_p);

    System.out.println("LAMMPS version " + ver);
    System.out.println("Number of created atoms: " + javalammps.lammps_get_natoms(lmp));
    javalammps.lammps_close(lmp);
  }
}
EOF

CLASSPATH=${PWD}:${CLASSPATH-${PWD}}
LD_LIBRARY_PATH=${PWD}:${LD_LIBARARY_PATH-${PWD}}

export CLASSPATH LD_LIBRARY_PATH

@Java_JAVAC_EXECUTABLE@ *.java
@Java_JAVA_EXECUTABLE@ example