import { getRedisClient } from './utils/redis';
import Redis from 'ioredis';
import { deleteKeysByPattern } from './utils';

export class RedisCache {
  // @ts-ignore
  client: Redis;
  prefix;
  constructor ({
    prefix = 'scraper:redis_cache:',
  }: { prefix?: string }) {

    this.prefix = prefix;
    this.init();
  }
  async init() {
    this.client = await getRedisClient();
  }
  key(item) {
    const key = `${this.prefix}${item}`;
    return key;
  }
  async add(item) {
    const key = this.key(item);
    return this.client.set(key, 1);
  }
  async has(item) {
    const key = this.key(item);

    return this.client.get(key);
  }
  async clear() {
    return deleteKeysByPattern(this.client, `${this.prefix}*`);
  }
}