/*
 * Copyright (C) Sapphirecode - All Rights Reserved
 * This file is part of Auth-Server-Helper which is released under MIT.
 * See file 'LICENSE' for full license details.
 * Created by Timo Hocker <timo@scode.ovh>, August 2022
 */

import { debug } from '../debug';
import { LabelledKey } from '../Key';
import { Redis } from '../Redis';

const logger = debug ('RedisKeyStore');

export class RedisKeyStore extends Redis {
  public async set (value: LabelledKey): Promise<void> {
    const log = logger.extend ('set');
    log ('trying to set key %s to redis', value.index);
    if (!this.is_active) {
      log ('redis is inactive, skipping');
      return;
    }
    const valid_for = Math.floor (
      (value.valid_until - (new Date)
        .getTime ()) / 1000
    );
    log ('key is valid for %d seconds', valid_for);
    await this.redis.setex (
      `keystore_${value.index}`,
      valid_for,
      JSON.stringify (value)
    );
    log ('saved key');
  }

  public async get (index: string): Promise<LabelledKey | null> {
    const log = logger.extend ('get');
    log ('trying to get key %s from redis', index);
    if (!this.is_active) {
      log ('redis is inactive, skipping');
      return null;
    }
    const res = await this.redis.get (`keystore_${index}`);
    if (res === null) {
      log ('key not found in redis');
      return null;
    }
    log ('key found');
    return JSON.parse (res);
  }
}

export const redis_key_store = new RedisKeyStore;