import json
import redis.asyncio as redis

class RedisClient:
    def __init__(self, host: str, port: int, task_channel: str, result_channel: str):
        self.client = redis.Redis(host=host, port=port, decode_responses=True)
        self.task_channel = task_channel
        self.result_channel = result_channel

    async def subscribe_tasks(self):
        pubsub = self.client.pubsub()
        await pubsub.subscribe(self.task_channel)
        return pubsub

    async def publish_result(self, result: dict):
        await self.client.publish(self.result_channel, json.dumps(result))