type Namespace = string;
type CustomEventDetail = Record<string, any>;

function _fireEvent(fullName: string, detail: CustomEventDetail) {
  const event = new window.CustomEvent(fullName, {
    detail: detail,
  });

  window.dispatchEvent(event);
}

export class SdkActionManager {
  namespace: Namespace;

  static parseAction(fullType: string) {
    if (!fullType) {
      return null;
    }
    //FIXME: Ensure that any action if it has :, it is properly encoded.
    const [cal, calNamespace, type] = fullType.split(":");
    if (cal !== "CAL") {
      return null;
    }
    return {
      ns: calNamespace,
      type,
    };
  }

  getFullActionName(name: string) {
    return this.namespace ? `CAL:${this.namespace}:${name}` : `CAL::${name}`;
  }

  fire(name: string, data: CustomEventDetail) {
    const fullName = this.getFullActionName(name);
    const detail = {
      type: name,
      namespace: this.namespace,
      fullType: fullName,
      data,
    };

    _fireEvent(fullName, detail);

    // Wildcard Event
    _fireEvent(this.getFullActionName("*"), detail);
  }

  on(name: string, callback: (arg0: CustomEvent<CustomEventDetail>) => void) {
    const fullName = this.getFullActionName(name);
    window.addEventListener(fullName, callback as EventListener);
  }

  off(name: string, callback: (arg0: CustomEvent<CustomEventDetail>) => void) {
    const fullName = this.getFullActionName(name);
    window.removeEventListener(fullName, callback as EventListener);
  }

  constructor(ns: string | null) {
    ns = ns || "";
    this.namespace = ns;
  }
}