export type Value<T> = T | ValueFn<T>
export type ValueFn<T> = () => Promise<T>
async wrap<T>(namespace: CacheNamespace, key: string, value: Value<T>, ttl?: number): Promise<T> {}

@Injectable()
class SomeService {

  constructor(private readonly data: ApiCoreDataAccessService) {}

  getNumber(): Promise<number> {
    return this.data.cache.wrap<number>('solana', 'some-number', 42)
  }

  getEndpoint(): Promise<string> {
    return this.data.cache.wrap<{  endpoint: string }>('solana', 'test', { endpoint: 'https://bla' })
  }

  getLatestBlockhash(appKey: string): Promise<LatestBlockhashResponse> {
    return this.data.cache.wrap<LatestBlockhashResponse>(
      'solana',
      `${appKey}:getLatestBlockhash`,
      () => this.getConnection(appKey).then((solana) => solana.getLatestBlockhash()),
      this.data.config.cache.solana.getLatestBlockhash.ttl,
    )
  }
}