const {noopLogger} = require('./lib/utils');
const Redis = require('ioredis');

module.exports = (opts, logger) => {
  logger = logger || noopLogger;
  const connectionOpts = {...opts};
  // Support legacy app
  if (process.env.JAMBONES_REDIS_USERNAME && process.env.JAMBONES_REDIS_PASSWORD) {
    if (Array.isArray(connectionOpts)) {
      for (const o of opts) {
        o.username = process.env.JAMBONES_REDIS_USERNAME;
        o.password = process.env.JAMBONES_REDIS_PASSWORD;
      }
    } else {
      connectionOpts.username = process.env.JAMBONES_REDIS_USERNAME;
      connectionOpts.password = process.env.JAMBONES_REDIS_PASSWORD;
    }
  }

  const client = new Redis(connectionOpts);
  ['ready', 'connect', 'reconnecting', 'error', 'end', 'warning']
    .forEach((event) => {
      client.on(event, (...args) => {
        if ('error' === event) {
          if (process.env.NODE_ENV === 'test' && args[0]?.code === 'ECONNREFUSED') return;
          logger.error({...args}, '@jambonz/realtimedb-helpers - redis error');
        }
        else logger.debug({args}, `redis event ${event}`);
      });
    });

  return {
    client,
    getTtsSize: require('./lib/get-tts-size').bind(null, client, logger),
    purgeTtsCache: require('./lib/purge-tts-cache').bind(null, client, logger),
    synthAudio: require('./lib/synth-audio').bind(null, client, logger),
    getNuanceAccessToken: require('./lib/get-nuance-access-token').bind(null, client, logger),
    getIbmAccessToken: require('./lib/get-ibm-access-token').bind(null, client, logger),
    getTtsVoices: require('./lib/get-tts-voices').bind(null, client, logger),
  };
};