import { Inject, Injectable } from '@nestjs/common';
import { Configuration } from './config.interfaces';

@Injectable()
export class ConfigurationService {
  constructor(
    @Inject('CONFIGURATION')
    public config: Configuration,
  ) {}

  public get<T>(key: string): T {
    return key
      .replace(/\[|\]\.?/g, '.')
      .split('.')
      .filter((s) => s)
      .reduce((acc, val) => acc && acc[val], this.config);
  }
}