import {my} from "my-ts";
import { IObserverWithSubscription } from "../../common/common.interfaces";

export const validObserver =
        (observerWithSubscription: IObserverWithSubscription<any>): boolean => {
        if (my(observerWithSubscription).isNullOrUndefinedOrEmpty) {
            return false;
        }
        const observer = observerWithSubscription.observer;
        if (my(observer).isNullOrUndefined) {
            return false;
        }
        return true;
    };

export const observerHasActiveSubcription =
        (observer: IObserverWithSubscription<any>, index: number): boolean => {
                if (my(observer).isNullOrUndefinedOrEmpty) {
                    return false;
                }
                if (my(observer.subscription).isNullOrUndefined) {
                    return false;
                }
                if (observer.subscription.closed) {
                    return false;
                }
                return true;
        };
export const observerWithActiveSubcription =
        (observer: IObserverWithSubscription<any>): boolean => {
                if (my(observer).isNullOrUndefinedOrEmpty) {
                    return false;
                }
                if (my(observer.subscription).isNullOrUndefined) {
                    return false;
                }
                if (observer.subscription.closed) {
                    return false;
                }
                return true;
        };

export const observerWithNoActiveSubscription =
        (observer: IObserverWithSubscription<any>): boolean => {
                if (my(observer).isNullOrUndefinedOrEmpty) {
                    return false;
                }
                if (my(observer.observer).isNullOrUndefined) {
                    return false;
                }
                if (my(observer.subscription).isNullOrUndefined) {
                    return true;
                }
                if (observer.subscription.closed) {
                    return true;
                }
                return false;
        };