"""This module is datasource for positions for fixed point observatories.

This probably should be in a separate package altogether since it is a data sink like e.g. hzg_sos_connector.
However, as of now there are only two relevant observatories and creating an own package with repo and ci pipeline
seems to be a bit too much right now.

TODO: Move to seperate repo once number of observatories and number of sources for data grows
"""
import pandas as pd
import datetime

class FixedPointObservatory:

    def __init__(self, shortname, latitude, longitude):
        """Simple class that holds shortname and position of an unmoving observatory.

        :param shortname: shortname e.g. from OceanEddiesGeoserverPostgis DB
        :param latitude
        :param longitude
        """

        self.shortname = shortname
        self.lat = latitude
        self.lon = longitude

    @property
    def longitude(self):
        return self.lon

    @property
    def latitude(self):
        return self.lat



# 'data source': a simple list edited by hand, add a new entry when needed
observatories = [FixedPointObservatory('ground_station_sal', 16.600338889, -22.898072222)]


def get_fixed_point_onservatories_data():
    """Returns data frame suitable for data ingest containing positions of all known fixed point onbservatories.
        The current time is set as timestamp for the returned positions.
    """

    obs = []
    for ob in observatories:
        obs.append({'platform_shortname': ob.shortname,
                    'obs_timestamp': datetime.datetime.utcnow(),
                    'lat': ob.lat,
                    'lon': ob.lon})

    return pd.DataFrame(obs)