import { 
  IConfigurable, ConfigParams, IReferences, 
  IReferenceable, Descriptor, IOpenable, Context, IContext
} from "pip-services4-components-node";

class MyComponentB {
  // ...
}


class MyComponentA implements IConfigurable, IReferenceable, IOpenable {
  private _param1: string = "ABC";
  private _param2: number = 123;
  private _open: boolean = false;
  private _status: string;
  private _anotherComponent: MyComponentB;

  // Creates a new instance of the component.
  public constructor(){
      this._status = "Created";
      console.log("MyComponentA has been created.");
  }

  public isOpen(): boolean {
      return this._open;
  }

  public async open(ctx: Context): Promise<void> {
    return new Promise<void>((resolve) => {
      this._open = true;
      this._status = "Open";
      console.log("MyComponentA has been opened.");
      resolve();
  });
  }

  public setReferences(references: IReferences): void {
      this._anotherComponent = references.getOneRequired<MyComponentB>(
          new Descriptor("myservice", "mycomponent-b", "*", "*", "1.0")
      );

      this._status = "Configured";
      console.log("MyComponentA's references have been defined.");
  }

  public configure(config: ConfigParams): void {
      this._param1 = config.getAsStringWithDefault("param1", "ABC");
      this._param2 = config.getAsIntegerWithDefault("param2", 123);
      this._status = "Configured";

      console.log("MyComponentA has been configured.");
  }
}