"""Configuration and marshaling of OutgoingFeed statuses."""
import datetime

from flask_restful import fields
from flask_restful import marshal_with
from flask_restful import Resource

from feed_status import config
from feed_status.models import feed_monitor
from feed_status.models import outgoing_feed
from feed_status.util import generate_default_date_dict_range

outgoing_feed_status_history_fields = {
    'data': fields.Nested({
        'feed_id': fields.String(attribute='feed_id'),
        'feed_name': fields.String(attribute='feed_name'),
        'delivery_date': fields.String(attribute='delivery_date'),
        'status': fields.String(),
        'time_sent': fields.DateTime(
            attribute='time_sent', dt_format='iso8601'),
        'error_message': fields.String(attribute='error_message'),
        'last_modified_utc': fields.DateTime(
            attribute='last_modified_utc', dt_format='iso8601')})
}


outgoing_feed_status_fields = {
    'data': fields.List(
        fields.Nested(
            {
                'feed_id': fields.String(attribute='feed_id'),
                'feed_name': fields.String(attribute='feed_name'),
                'metrics': fields.Raw,
                'status_history': fields.Raw(attribute='status_history')
            })),
    'dates': fields.List(fields.String)
}


class OutgoingFeedStatus(Resource):
    """Provides response for /outgoing_feed/<feed_name>/status."""

    @marshal_with(outgoing_feed_status_fields)
    def get(self, feed_name, date=None):
        """Marshal specific OutgoingFeed status.

        Args:
            feed_name (str): specific feed of interest.

        Returns:
            dict: json payload for feed status.
        """
        days_count = config.DASHBOARD_DISPLAYED_DAYS

        if date:
            to_date = datetime.date.fromisoformat(date)
        else:
            to_date = datetime.date.today()
        delta = datetime.timedelta(days=days_count)
        from_date = to_date - delta

        outgoing_feeds = outgoing_feed.get_active_feeds()
        for feed in outgoing_feeds:
            feed.status_history = outgoing_feed.get_outgoing_feed_history(
                feed, from_date, to_date)
            feed.metrics = feed_monitor.get_metric_status(
                feed, feed.status_history)

        dates = generate_default_date_dict_range(from_date, to_date)
        dates = list(dates.keys())

        return {
            'data': outgoing_feeds,
            'dates': dates
        }