"""ActivityDetectorFeed class and related status, finder methods."""

from feed_status import util
from feed_status.models.orm import feed_activity_detector_status


ACTIVITY_DETECTOR_STATUS_PROCESSED = 'processed'
ACTIVITY_DETECTOR_STATUS_PROCESSED_NOTIF_SENT = 'processed_notif_sent'

ACTIVITY_DETECTOR_TYPE_DAILY = 'daily'


class ActivityDetectorFeed:
    """ActivityDetectorFeed class to store configuration about each feed."""

    def __init__(
        self,
        feed_id,
        feed_name,
        status_source_db,
        update_freq,
        feed_type=None,
        status=None,
        metrics=None,
    ):
        """Initialize class with attributes."""
        self.feed_id = feed_id
        self.feed_name = feed_name
        self.status_source_db = status_source_db
        self.update_freq = update_freq
        # todo: move feed_type to feed monitor class
        self.feed_type = feed_type
        self.status = status
        self.metrics = metrics

    def match(self, **kwargs):
        """Whether instance of AD Feed contains provided attributes.

        Args:
            kwargs: keys/values to match on.

        Returns:
            boolean: True if contains all provided attributes, False otherwise.
        """
        return all(
            getattr(self, key, None) == val for (key, val) in kwargs.items())


active_feeds = [
    ActivityDetectorFeed(
        feed_id='chartmetric_spike_detector',
        feed_name='Chartmetric Spike Detector',
        feed_type=ACTIVITY_DETECTOR_TYPE_DAILY,
        status_source_db='feed_status',
        update_freq=1,
    ),
]


def get_active_feeds():
    """Retrieve active feeds.

    Returns:
        list: array of ActivityDetectorFeed configuration instances.
    """
    return active_feeds


def get_activity_detector_feed_history(feed, from_date, to_date):
    """Retrieve outgoing history for feed within a date range.

    Args:
        feed (OutgoingFeed): OutgoingFeed instance.
        from_date (date): start date of interest.
        to_date (date): end date of history.

    Returns:
        dict: map of dates to feed status.
    """
    status = util.generate_default_date_dict_range(from_date, to_date)

    if feed.status_source_db == 'feed_status':
        feed_history_list = (
            feed_activity_detector_status.get_activity_detector_feed_history(
                feed.feed_id,
                from_date.isoformat(),
                to_date.isoformat(),
            )
        )
        for feed_history in feed_history_list:
            status[feed_history['date']] = feed_history['status'].lower()

    return status