import {IUserManager} from "./interfaces/IUserManager";
import {IGalleryManager} from "./interfaces/IGalleryManager";
import {ISearchManager} from "./interfaces/ISearchManager";
import {MySQLConnection} from "./mysql/MySQLConnection";

export class ObjectManagerRepository {

  private _galleryManager: IGalleryManager;
  private _userManager: IUserManager;
  private _searchManager: ISearchManager;
  private static _instance: ObjectManagerRepository = null;


  public static InitMemoryManagers() {
    const GalleryManager = require("./memory/GalleryManager").GalleryManager;
    const UserManager = require("./memory/UserManager").UserManager;
    const SearchManager = require("./memory/SearchManager").SearchManager;
    ObjectManagerRepository.getInstance().setGalleryManager(new GalleryManager());
    ObjectManagerRepository.getInstance().setUserManager(new UserManager());
    ObjectManagerRepository.getInstance().setSearchManager(new SearchManager());
  }

  public static InitMySQLManagers(): Promise<boolean> {
    return new Promise<boolean>((resolve, reject) => {
      MySQLConnection.init().then(() => {
        const GalleryManager = require("./mysql/GalleryManager").GalleryManager;
        const UserManager = require("./mysql/UserManager").UserManager;
        const SearchManager = require("./mysql/SearchManager").SearchManager;
        ObjectManagerRepository.getInstance().setGalleryManager(new GalleryManager());
        ObjectManagerRepository.getInstance().setUserManager(new UserManager());
        ObjectManagerRepository.getInstance().setSearchManager(new SearchManager());
        console.log("MySQL DB inited");
        resolve(true);
      }).catch(err => reject(err));
    });
  }

  public static getInstance() {
    if (this._instance === null) {
      this._instance = new ObjectManagerRepository();
    }
    return this._instance;
  }

  public static reset() {
    this._instance = null;
  }


  getGalleryManager(): IGalleryManager {
    return this._galleryManager;
  }

  setGalleryManager(value: IGalleryManager) {
    this._galleryManager = value;
  }

  getUserManager(): IUserManager {
    return this._userManager;
  }

  setUserManager(value: IUserManager) {
    this._userManager = value;
  }

  getSearchManager(): ISearchManager {
    return this._searchManager;
  }

  setSearchManager(value: ISearchManager) {
    this._searchManager = value;
  }

}