"""Module provider for memset"""
from __future__ import absolute_import

import json
import logging

import requests

from lexicon.providers.base import Provider as BaseProvider

LOGGER = logging.getLogger(__name__)

NAMESERVER_DOMAINS = ["memset.com"]


def provider_parser(subparser):
    """Configure provider parser for memset"""
    subparser.add_argument("--auth-token", help="specify API key for authentication")


class Provider(BaseProvider):
    """Provider class for memset"""

    def __init__(self, config):
        super(Provider, self).__init__(config)
        self.domain_id = None
        self.api_endpoint = "https://api.memset.com/v1/json"

    def _authenticate(self):
        payload = self._get("/dns.zone_domain_info", {"domain": self.domain})
        if not payload["zone_id"]:
            raise Exception("No domain found")
        self.domain_id = payload["zone_id"]

    # Create record. If record already exists with the same content, do nothing'
    def _create_record(self, rtype, name, content):
        data = {"type": rtype, "record": self._relative_name(name), "address": content}
        if self._get_lexicon_option("ttl"):
            data["ttl"] = self._get_lexicon_option("ttl")
        data["zone_id"] = self.domain_id
        check_exists = self._list_records(rtype=rtype, name=name, content=content)
        if not check_exists:
            payload = self._get("/dns.zone_record_create", data)
            if payload["id"]:
                self._get("/dns.reload")
                LOGGER.debug("create_record: %s", payload["id"])
                return payload["id"]
        return check_exists

    # List all records. Return an empty list if no records found
    # type, name and content are used to filter records.
    # If possible filter during the query, otherwise filter after response is received.
    def _list_records(self, rtype=None, name=None, content=None):
        payload = self._get("/dns.zone_info", {"id": self.domain_id})
        records = []
        for record in payload["records"]:
            processed_record = {
                "type": record["type"],
                "name": self._full_name(record["record"]),
                "ttl": record["ttl"],
                "content": record["address"],
                "id": record["id"],
            }
            if name:
                name = self._full_name(name)
            if processed_record["type"] == rtype:
                if name is not None and content is not None:
                    if (
                        processed_record["name"] == name
                        and processed_record["content"] == content
                    ):
                        records.append(processed_record)
                elif name is not None and content is None:
                    if processed_record["name"] == name:
                        records.append(processed_record)
                elif name is None and content is not None:
                    if processed_record["content"] == content:
                        records.append(processed_record)
                else:
                    records.append(processed_record)

        LOGGER.debug("list_records: %s", records)
        return records

    # Create or update a record.
    def _update_record(self, identifier, rtype=None, name=None, content=None):
        data = {}
        if not identifier:
            records = self._list_records(rtype, self._relative_name(name))
            if len(records) == 1:
                identifier = records[0]["id"]
            else:
                raise Exception("Record identifier could not be found.")
        if rtype:
            data["type"] = rtype
        if name:
            data["record"] = self._relative_name(name)
        if content:
            data["address"] = content
        if self._get_lexicon_option("ttl"):
            data["ttl"] = self._get_lexicon_option("ttl")
        data["id"] = identifier
        data["zone_id"] = self.domain_id

        payload = self._get("/dns.zone_record_update", data)
        if payload["id"]:
            self._get("/dns.reload")
            LOGGER.debug("update_record: %s", payload["id"])
            return payload["id"]
        return False

    # Delete an existing record.
    # If record does not exist, do nothing.
    def _delete_record(self, identifier=None, rtype=None, name=None, content=None):
        delete_record_id = []
        if not identifier:
            records = self._list_records(rtype, self._relative_name(name), content)
            delete_record_id = [record["id"] for record in records]
        else:
            delete_record_id.append(identifier)

        LOGGER.debug("delete_records: %s", delete_record_id)

        record_id = None
        for record_id in delete_record_id:
            self._get("/dns.zone_record_delete", {"id": record_id})

        if record_id:
            self._get("/dns.reload")

        LOGGER.debug("delete_record: %s", True)
        return True

    # Helpers
    def _request(self, action="GET", url="/", data=None, query_params=None):
        if data is None:
            data = {}
        if query_params is None:
            query_params = {}
        response = requests.request(
            action,
            self.api_endpoint + url,
            params=query_params,
            data=json.dumps(data),
            auth=(self._get_provider_option("auth_token"), "x"),
            headers={"Content-Type": "application/json"},
        )
        # if the request fails for any reason, throw an error.
        response.raise_for_status()
        return response.json()
