Change molecules legacy endpoint (#802)

* Nest legacy molecules

* Linting

emmet-api/app.py

@@ -1,14 +1,13 @@
 from material_resources import resources as materials_resources
 from molecule_resources import resources as molecule_resources
-from legacy_resources import resources as legacy_resources
 
 from emmet.api.core.api import MAPI
 from emmet.api.core.documentation import description, tags_meta
 from emmet.api.core.settings import MAPISettings
 
 default_settings = MAPISettings()
 
-resources = {**materials_resources, **molecule_resources, **legacy_resources}
+resources = {**materials_resources, **molecule_resources}
 
 api = MAPI(
     resources=resources,

emmet-api/molecule_resources.py

@@ -24,6 +24,7 @@
 from emmet.api.routes.molecules.thermo.resources import thermo_resource
 from emmet.api.routes.molecules.vibrations.resources import vibration_resource
 from emmet.api.routes.molecules.summary.resources import summary_resource
+from emmet.api.routes.legacy.jcesr.resources import jcesr_resource
 
 
 resources = {}
@@ -124,6 +125,10 @@
         collection_name="molecules_summary",
     )
 
+    jcesr_store = MongoURIStore(
+        uri=db_uri, database="mp_core", key="task_id", collection_name="molecules"
+    )
+
 else:
     raise RuntimeError("Must specify MongoDB URI containing inputs.")
 
@@ -179,4 +184,7 @@
 # Summary
 mp_molecules_resources.extend([summary_resource(summary_store)])
 
+# Legacy JCESR
+mp_molecules_resources.extend([jcesr_resource(jcesr_store)])
+
 resources.update({"molecules": mp_molecules_resources})