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# pylint: disable=[R0902, R0903]
"""This contains all the necessary functions that access the metadata_audit
table from the db
"""
import json
from typing import Optional
from dataclasses import dataclass
from MySQLdb.cursors import DictCursor
@dataclass(frozen=True)
class MetadataAudit:
"""Data Type that represents a Phenotype"""
id_: Optional[int] = None
dataset_id: Optional[int] = None
editor: Optional[str] = None
json_data: Optional[str] = None
time_stamp: Optional[str] = None
# Mapping from the MetadataAudit dataclass to the actual column names in the
# database
metadata_audit_mapping = {
"id_": "id",
"dataset_id": "dataset_id",
"editor": "editor",
"json_data": "json_diff_data",
"time_stamp": "time_stamp",
}
def create_metadata_audit(conn, metadata: dict) -> int:
"""Create a new metadata audit trail."""
with conn.cursor(cursorclass=DictCursor) as cursor:
cursor.execute(
"INSERT INTO metadata_audit (dataset_id, editor, json_diff_data) "
"VALUES (%(dataset_id)s, %(editor)s, %(json_data)s)",
metadata)
return cursor.rowcount
def __parse_metadata_audit__(row) -> dict:
"""Convert values in DB to expected Python values """
return {
**{key:val for key,val in row.items() if key not in ("json_diff_data")},
"id_": row["id"],
"json_data": json.loads(row["json_diff_data"])
}
def fetch_phenotype_metadata_audit_by_dataset_id(conn, dataset_id) -> tuple[dict, ...]:
"""Fetch phenotype a metadata audit trail by `dataset_id`."""
assert bool(dataset_id), "`dataset_id` MUST be provided."
with conn.cursor(cursorclass=DictCursor) as cursor:
cursor.execute(
"SELECT ma.* "
"FROM PublishXRef AS pxr LEFT JOIN metadata_audit AS ma "
"ON pxr.Id=ma.dataset_id "
"WHERE pxr.Id=%(dataset_id)s "
"AND ma.json_diff_data LIKE '%%phenotype%%' "
"ORDER BY time_stamp ASC",
{"dataset_id": dataset_id})
return tuple(__parse_metadata_audit__(row) for row in cursor.fetchall())
def fetch_probeset_metadata_audit_by_trait_name(conn, trait_name) -> tuple[dict, ...]:
"""Fetch a probeset metadata audit trail by `dataset_id`."""
assert bool(trait_name), "`trait_name` MUST be provided."
with conn.cursor(cursorclass=DictCursor) as cursor:
cursor.execute(
"SELECT ma.* "
"FROM ProbeSet AS ps LEFT JOIN metadata_audit AS ma "
"ON ps.Id=ma.dataset_id "
"WHERE ps.Name=%(trait_name)s "
"AND json_diff_data LIKE '%probeset%' "
"ORDER BY time_stamp ASCENDING",
{"trait_name": trait_name})
return tuple(__parse_metadata_audit__(row) for row in cursor.fetchall())
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