import {Class} from "../types/Class";

export class Container {
  static instance: Container;

  private instances: Map<string, object> = new Map();

  public set<T extends Class>(instance: T, name: string | null = null): void {
    const settingName = name ?? instance.constructor.name;
    this.instances.set(settingName.toLowerCase(), instance);
  }

  public get<T extends Class>(name: string): T {
    return <T>this.instances.get(name.toLowerCase());
  }

  static getInstance(): Container {
    if (!Container.instance) {
      Container.instance = new Container();
    }

    return Container.instance;
  }

  public static get<T>(name: string): T {
    return Container.instance.get<T>(name);
  }
}