"""
LAMMPS module global members:

.. data:: __version__

   Numerical representation of the LAMMPS version this
   module was taken from.  Has the same format as the
   result of :py:func:`lammps.version`.
"""

from .constants import *                # lgtm [py/polluting-import]
from .core import *                     # lgtm [py/polluting-import]
from .data import *                     # lgtm [py/polluting-import]
from .pylammps import *                 # lgtm [py/polluting-import]

# convert installed module string version to numeric version
def get_version_number():
    import time
    from os.path import join
    from sys import version_info

    # must report 0 when inside LAMMPS source tree
    if __file__.find(join('python', 'lammps', '__init__.py')) > 0:
        return 0

    if version_info.major < 3 or (version_info.major == 3 and version_info.minor < 6):
        raise SystemError('LAMMPS only supports Python version 3.6 or later')

    vstring = None
    if version_info.major == 3 and version_info.minor >= 8:
        from importlib.metadata import version, PackageNotFoundError
        try:
            vstring = version('lammps')
        except PackageNotFoundError:
            # nothing to do, ignore
            pass

    else:
        from pkg_resources import get_distribution, DistributionNotFound
        try:
            vstring = get_distribution('lammps').version
        except DistributionNotFound:
            # nothing to do, ignore
            pass

    if not vstring:
        return 0

    t = time.strptime(vstring, "%Y.%m.%d")
    return t.tm_year*10000 + t.tm_mon*100 + t.tm_mday

__version__ = get_version_number()