from time import sleep

from pyhamtools.locator import latlong_to_locator

from core.enums import SIGRefType
from data.sig_ref import SIGRef
from providers.sigrefdata.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider


class COTA(FileDownloadSIGRefDataProvider):
    """SIG ref data provider for Castles on the Air"""

    POLL_INTERVAL_DAYS = 30
    SIG = "COTA"
    DATA_URL = "https://www.cotagroup.org/cotagroup/map/data/castles-all-7d90ee2a5e1175e5dece1bbf9dc87504.json"

    def __init__(self, provider_config):
        super().__init__(self.SIG, provider_config, self.DATA_URL, self.POLL_INTERVAL_DAYS)

    def _http_response_to_data(self, http_response):
        new_data = []
        data = http_response.json()
        if isinstance(data, list):
            for ref in data[2]:
                ref_id = ref[3]
                name = ref[4]
                lat = float(ref[0])
                lon = float(ref[1])
                grid = latlong_to_locator(lat, lon)

                new_data.append(
                    SIGRef(
                        sig=self.SIG,
                        id=ref_id,
                        name=name,
                        ref_type=SIGRefType.CASTLE,
                        grid=grid,
                        latitude=lat,
                        longitude=lon,
                    )
                )

                # Bail out if a stop has been requested, i.e. the program is shutting down - no need to parse the rest
                # of the data in this case
                if self._stop_event.is_set():
                    break

                # Very short pause. This will extend the time to handle sig refs by a few seconds but will ensure some time
                # is available for other threads e.g. the web server.
                sleep(0.001)

        return new_data