from dataclasses import dataclass


@dataclass
class Callsign:
    """Data class that defines a callsign and the data associated with it. This will have been retrieved by a callsign
    lookup provider using data files or online lookup. This can be used to infer missing data for a spot, though if the
    spot has a SIG (e.g. POTA) reference this data for their home location (or even just their country) will be less
    accurate and should not be used in preference to that."""

    # Callsign as spotted
    call: str
    # "Home" call, i.e. with any prefixes and suffixes stripped off
    home_call: str
    # Operator name
    name : str | None = None
    # QTH (location), free text
    qth : str | None = None
    # Maidenhead grid locator. Depending on the source of lookup this could be a home location from QRZ/HamQTH or just
    # the centre of the country they're operating in if no other data is available.
    grid : str | None = None
    # Latitude. Depending on the source of lookup this could be a home location from QRZ/HamQTH or just
    # the centre of the country they're operating in if no other data is available.
    latitude : float | None = None
    # Longitude. Depending on the source of lookup this could be a home location from QRZ/HamQTH or just
    # the centre of the country they're operating in if no other data is available.
    longitude : float | None = None
    # Country in which the callsign indicates they are operating
    country: str | None = None
    # Continent in which the callsign indicates they are operating
    continent: str | None = None
    # DXCC ID in which the callsign indicates they are operating
    dxcc_id: int | None = None
    # CQ zone in which the callsign indicates they are operating
    cq_zone: int | None = None
    # ITU zone in which the callsign indicates they are operating
    itu_zone: int | None = None