import { RedisService } from "@liaoliaots/nestjs-redis";
import { Injectable } from "@nestjs/common";
import Redis from "ioredis";

@Injectable()
export class RedisClient {
  private readonly redis: Redis | null;

  constructor(private readonly redisService: RedisService) {
    this.redis = this.redisService.getOrThrow();
  }

  async set(
    key: string,
    value: any,
    expireInSeconds?: number
  ): Promise<"OK" | null> {
    if (!this.redis) {
      return null;
    }

    if (expireInSeconds) {
      return await this.redis.set(
        key,
        JSON.stringify(value),
        "EX",
        expireInSeconds
      );
    }

    return await this.redis.set(key, JSON.stringify(value));
  }

  async get(key: string): Promise<any | null> {
    if (!this.redis) {
      return null;
    }

    return JSON.parse(await this.redis.get(key));
  }

  async del(key: string): Promise<number | null> {
    if (!this.redis) {
      return null;
    }

    return await this.redis.del(key);
  }

  getClient(): Redis | null {
    return this.redis;
  }
}