#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Step 3 - load atom structure and represent it using our metadata framework
--------------------------------------------------------------------------
In this step we uses the Atomistic Simulation Environment (ASE) to load
a atomistic Al-Fe4Al13 interface structure from a cif file and
represents it using the metadata defined in step 2.
"""

# pylint: disable=import-error
import ase
import ase.io

import dlite

from step2_define_metadata import DLiteAtoms

# Example for importing structure from the MaterialsProject.
# See https://materialsproject.org/docs/api for instructions for getting
# personal access.
# Not used in the current demo
#
#     from pymatgen.ext.matproj import MPRester
#     with MPRester('USER_API_KEY') as m:
#         structure = m.get_structure_by_material_id('mp-2018')
#


# Load atom structure from cif file
at = ase.io.read("../vertical/Al-Fe4Al13.cif")

# convert atom structure to a DLiteAtoms object
atoms = dlite.objectfactory(at, cls=DLiteAtoms, instanceid="atoms_Al-Fe4Al13")


# Create a new collection for data instances
coll = dlite.Collection("usercase_appdata")
coll.add("Atoms", atoms.dlite_meta)
coll.add("atoms", atoms.dlite_inst)
coll.save("json", "usercase_appdata.json", "mode=w")