import csv
import json
import logging
from datetime import datetime

import pytz

from data.sig_ref import SIGRef
from data.spot import Spot
from spotproviders.websocket_spot_provider import WebsocketSpotProvider


# Spot provider for servers based on the "xOTA" software at https://github.com/nischu/xOTA/
# The provider typically doesn't give us a lat/lon or SIG explicitly, so our own config provides a SIG and a reference
# to a local CSV file with location information. This functionality is implemented for TOTA events, of which there are
# several - so a plain lookup of a "TOTA reference" doesn't make sense, it depends on which TOTA and hence which server
# supplied the data, which is why the CSV location lookup is here and not in sig_utils.
class XOTA(WebsocketSpotProvider):
    LOCATION_DATA = {}
    SIG = None

    def __init__(self, provider_config):
        super().__init__(provider_config, provider_config["url"])
        locations_csv = provider_config["locations-csv"] if "locations-csv" in provider_config else None
        self.SIG = provider_config["sig"] if "sig" in provider_config else None

        # Load location data
        if locations_csv:
            try:
                f = open(locations_csv)
                csv_data = f.read()
                dr = csv.DictReader(csv_data.splitlines())
                for row in dr:
                    self.LOCATION_DATA[row["ref"]] = {"lat": row["lat"], "lon": row["lon"]}
            except:
                logging.exception("Could not look up location data for XOTA source.")

    def ws_message_to_spot(self, bytes):
        string = bytes.decode("utf-8")
        source_spot = json.loads(string)
        ref_id = source_spot["reference"]["title"]
        lat = float(self.LOCATION_DATA[ref_id]["lat"]) if ref_id in self.LOCATION_DATA else None
        lon = float(self.LOCATION_DATA[ref_id]["lon"]) if ref_id in self.LOCATION_DATA else None
        spot = Spot(source=self.name,
                    source_id=source_spot["id"],
                    dx_call=source_spot["stationCallSign"].upper(),
                    freq=float(source_spot["freq"]) * 1000,
                    mode=source_spot["mode"].upper(),
                    sig=self.SIG,
                    sig_refs=[SIGRef(id=ref_id, sig=self.SIG, url=source_spot["reference"]["website"], latitude=lat, longitude=lon)],
                    time=datetime.now(pytz.UTC).timestamp(),
                    dx_latitude=lat,
                    dx_longitude=lon,
                    qrt=source_spot["state"] != "active")
        return spot