"""
Feed DNS Version IPs with ASN
"""

import logging
from datetime import timedelta
from typing import ClassVar

import pandas as pd

from core import taskmanager
from core.schemas import task
from core.schemas.observables import asn, ipv4


class DataplaneDNSVersion(task.FeedTask):
    """
    Feed DNS Version IPs with ASN
    """

    _SOURCE: ClassVar["str"] = "https://dataplane.org/dnsversion.txt"
    _defaults = {
        "frequency": timedelta(hours=12),
        "name": "DataplaneDNSVersion",
        "description": "Feed DNS Version IPs with ASN",
    }
    _NAMES = ["ASN", "ASname", "ipaddr", "lastseen", "category"]

    def run(self):
        response = self._make_request(self._SOURCE, sort=False)
        if response:
            lines = response.content.decode("utf-8").split("\n")[66:-5]

            df = pd.DataFrame(
                [line.split("|") for line in lines], columns=pd.Index(self._NAMES)
            )

            df = df.applymap(lambda x: x.strip() if isinstance(x, str) else x)
            df.ffill(inplace=True)
            df["lastseen"] = pd.to_datetime(df["lastseen"])
            df = self._filter_observables_by_time(df, "lastseen")

            for _, row in df.iterrows():
                self.analyze(row)

    def analyze(self, item):
        if not item["ipaddr"]:
            return

        context_ip = {
            "source": self.name,
        }

        ip_obs = ipv4.IPv4(value=item["ipaddr"]).save()
        category = item["category"].lower()
        tags = ["dataplane", "dnsversion"]
        if category:
            tags.append(category)
        logging.debug(f"Adding context {context_ip} to {ip_obs}")
        ip_obs.add_context("dataplane dns version", context_ip)
        ip_obs.tag(tags)
        asn_obs = asn.ASN(value=item["ASN"]).save()
        context_asn = {
            "source": self.name,
            "name": item["ASname"],
            "last_seen": item["lastseen"],
        }
        asn_obs.add_context(self.name, context_asn)
        asn_obs.tag(tags)

        asn_obs.link_to(ip_obs, "ASN_IP", self.name)


taskmanager.TaskManager.register_task(DataplaneDNSVersion)
