import json
from flask import request, current_app, jsonify
from flask_classful import FlaskView
from db import redis_client  # ez nagyon otvar


class SyncView(FlaskView):

    def post(self):
        remote_uuid = request.json['uuid']
        remote_ip = request.remote_addr

        consumer_list = json.loads((redis_client.get("consumer_list") or b"{}").decode('utf-8'))

        # Log something about it
        if remote_uuid not in consumer_list.keys():
            current_app.logger.info(f"New consumer registered (unknown UUID): {remote_uuid} at {remote_ip}")
        else:  # known
            if consumer_list[remote_uuid]['ip'] != remote_ip:
                current_app.logger.info(f"Address of consumer {remote_uuid} changed to {remote_ip}")

        consumer_list.update(
            {remote_uuid: {"ip": remote_ip}}
        )

        redis_client.set("consumer_list", json.dumps(consumer_list).encode('utf-8'))

        response = {
            "uuid": current_app.config['LOCAL_UUID']
        }

        return jsonify(response)