"""Methods for retrieving Activity Detector Feed status from DynamoDB."""

import boto3
from boto3.dynamodb.conditions import Key

from feed_status import config


dynamodb = boto3.resource('dynamodb', region_name=config.AWS_REGION)

FEED_ACTIVITY_DETECTOR_TABLE = dynamodb.Table(
    config.FEED_ACTIVITY_DETECTOR_TABLE,
)


def get_activity_detector_feed_history(feed_name, from_date, to_date):
    """Look up feed status in DynamoDB.

    Args:
        feed_name (str): feed name of interest.
        from_date (date): start date of interest.
        to_date (date): end date of interest.

    Returns:
        list: list of statuses.
    """
    response = FEED_ACTIVITY_DETECTOR_TABLE.query(
        KeyConditionExpression=(
            Key('activity_type_name').eq(feed_name) &
            Key('date').between(from_date, to_date)
        )
    )
    return response.get('Items')