require('dotenv').config();
const debug = require('debug')('soundbirder:cache');
const redis = require('redis');
const host = process.env.REDIS_HOST ? process.env.REDIS_HOST : 'localhost';
const port = process.env.REDIS_PORT ? process.env.REDIS_PORT : 6379;
const url = `redis://${host}:${port}`;
const redisClient = redis.createClient({
    url
});

(async () => {
    redisClient.connect();
})();0

function cacheResponse(request, response) {
    debug("Caching response", request);
    redisClient.set(request, JSON.stringify(response));
}

async function getCached(request) {
    const cached = await redisClient.get(request);
    if (cached) {
        debug("Got cached response", request);
        return JSON.parse(cached);
    }
    return null;
}

module.exports = {
    cacheResponse,
    getCached
}