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Show All 24 Lines	def check_metadata(metadata: Dict) -> Tuple[bool, Optional[Dict]]:

Returns:		Returns:
tuple (status, error_detail): True, None if metadata are		tuple (status, error_detail): True, None if metadata are
ok (False, <detailed-error>) otherwise.		ok (False, <detailed-error>) otherwise.

"""		"""
# following fields are mandatory		# following fields are mandatory
required_fields = {		required_fields = {
"author": False,		"atom:author": False,
}		}
# at least one value per couple below is mandatory		# at least one value per couple below is mandatory
alternate_fields = {		alternate_fields = {
("name", "title"): False,		("atom:name", "atom:title"): False,
}		}

for field, value in metadata.items():		for field, value in metadata.items():
for name in required_fields:		for name in required_fields:
if name in field:		if name in field:
required_fields[name] = True		required_fields[name] = True

for possible_names in alternate_fields:		for possible_names in alternate_fields:
Show All 18 Lines