import type { FWComponentType } from '../models/FWComponentType';

class FWGlobalState {
  private static _instance?: FWGlobalState;
  private sdkInitSucceededResolveFunc?: () => void;
  sdkInitSucceededPromise: Promise<void>;
  sdkInitSucceeded: boolean = false;
  componentTypeByFeedIdMap = new Map<string, FWComponentType>();

  static getInstance() {
    if (!FWGlobalState._instance) {
      FWGlobalState._instance = new FWGlobalState();
    }

    return FWGlobalState._instance!;
  }

  private constructor() {
    this.sdkInitSucceededPromise = new Promise((resolve) => {
      this.sdkInitSucceededResolveFunc = resolve;
    });
  }

  resolveSdkInitSucceeded() {
    if (this.sdkInitSucceededResolveFunc) {
      // only call once
      this.sdkInitSucceededResolveFunc();
      this.sdkInitSucceededResolveFunc = undefined;
    }
    this.sdkInitSucceeded = true;
  }
}

export default FWGlobalState;