#!/usr/bin/env python3

import database
import argparse
import sys
import logging

if __name__ == '__main__':

    # Parsing arguments
    log = logging.getLogger('feed_dns')
    parser = argparse.ArgumentParser(
        description="TODO")
    parser.add_argument(
        # '-i', '--input', type=argparse.FileType('rb'), default=sys.stdin.buffer,
        '-i', '--input', type=argparse.FileType('r'), default=sys.stdin,
        help="TODO")
    args = parser.parse_args()

    DB = database.Database(write=True)

    try:
        DB.enter_step('iowait')
        # line: bytes
        line: str
        for line in args.input:
            DB.enter_step('feed_json_parse')
            # split = line.split(b'"')
            split = line.split('"')
            try:
                name = split[7]
                dtype = split[11]
                value = split[15]
            except IndexError:
                log.error("Invalid JSON: %s", line)
                continue
            # DB.enter_step('feed_json_assert')
            # data = json.loads(line)
            # assert dtype == data['type']
            # assert name == data['name']
            # assert value == data['value']

            DB.enter_step('feed_switch')
            if dtype == 'a':
                for rule in DB.get_ip4(value):
                    DB.set_hostname(name, source=rule)
            elif dtype == 'cname':
                for rule in DB.get_domain(value):
                    DB.set_hostname(name, source=rule)
            elif dtype == 'ptr':
                for rule in DB.get_domain(value):
                    DB.set_ip4address(name, source=rule)
            DB.enter_step('iowait')
    except KeyboardInterrupt:
        log.warning("Interupted.")
        pass

    DB.close()