import { IRepositoryManager, RepositoryManager } from "../domain";
import { ISequelizeAdapter, createSequelizeAdapter } from "./sequelize";

// ContextFactory.ts
export interface IContext<T> {
  adapter: ISequelizeAdapter;
  repositoryManager: IRepositoryManager;
  services: T;
}

export class ContextFactory<T> {
  private static instances: Map<string, ContextFactory<any>> = new Map();

  public static getInstance<T>(constructor: new () => T): ContextFactory<T> {
    const key = constructor.name;
    if (!ContextFactory.instances.has(key)) {
      ContextFactory.instances.set(key, new ContextFactory<T>(constructor));
    }

    return ContextFactory.instances.get(key)! as ContextFactory<T>;
  }

  private context: IContext<T>;

  private constructor(constructor: new () => T) {
    this.context = {
      adapter: createSequelizeAdapter(),
      repositoryManager: RepositoryManager.getInstance(),
      services: new constructor(),
    };
  }

  public getContext(): IContext<T> {
    return this.context;
  }
}