"""Mongo connection and collection accessors."""
import os

from motor.motor_asyncio import AsyncIOMotorClient

MONGO_URL = os.environ.get("MONGO_URL", "mongodb://localhost:27017")
DB_NAME = os.environ.get("DB_NAME", "jimi_gallery")

client = AsyncIOMotorClient(MONGO_URL)
db = client[DB_NAME]

artists = db.artists
exhibitions = db.exhibitions
news = db.news
settings_col = db.settings  # single-document collection keyed by _id="singleton"


def strip_id(doc):
    """Drop Mongo's _id before returning to the client."""
    if doc is None:
        return None
    doc = dict(doc)
    doc.pop("_id", None)
    return doc