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import { action, makeObservable, observable, runInAction } from 'mobx';
import { Networking } from '../Network';
import { CurrentUserUtils } from './CurrentUserUtils';
export class PingManager {
// create static instance and getter for global use
// eslint-disable-next-line no-use-before-define
@observable static _instance: PingManager;
@observable IsBeating = true;
static get Instance(): PingManager {
return PingManager._instance;
}
// not used now, but may need to clear interval
private _interval: NodeJS.Timeout | null = null;
INTERVAL_SECONDS = 1;
constructor() {
makeObservable(this);
PingManager._instance = this;
this._interval = setInterval(this.sendPing, this.INTERVAL_SECONDS * 1000);
}
private setIsBeating = action((status: boolean) => {
this.IsBeating = status;
setTimeout(this.showAlert, 100);
});
showAlert = () => {
alert(PingManager.Instance.IsBeating ? 'The server connection is active' : 'The server connection has been interrupted.NOTE: Any changes made will appear to persist but will be lost after a browser refreshes.');
};
sendPing = async (): Promise<void> => {
try {
const res = await Networking.PostToServer('/ping', { date: new Date() });
runInAction(() => {
CurrentUserUtils.ServerVersion = res.message;
});
!this.IsBeating && this.setIsBeating(true);
} catch {
if (this.IsBeating) {
this.setIsBeating(false);
}
}
};
}
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