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// TODO: rename file
import * as _ from 'lodash';
import { Dispatch } from 'redux';
import { Action } from '../redux/actions';
import { asyncData } from '../redux/async_data';
import { State } from '../redux/reducer';
import { Store } from '../redux/store';
import { updateBuyQuoteOrFlashErrorAsyncForState } from './buy_quote_fetcher';
type HeartbeatableFunction = () => Promise<void>;
export class Heartbeater {
private _intervalId?: number;
private _pendingRequest: boolean;
private _performingFunctionAsync: HeartbeatableFunction;
public constructor(_performingFunctionAsync: HeartbeatableFunction) {
this._performingFunctionAsync = _performingFunctionAsync;
this._pendingRequest = false;
}
public start(intervalTimeMs: number): void {
if (!_.isUndefined(this._intervalId)) {
throw new Error('Heartbeat is running, please stop before restarting');
}
this._trackAndPerformAsync();
this._intervalId = window.setInterval(this._trackAndPerformAsync.bind(this), intervalTimeMs);
}
public stop(): void {
if (this._intervalId) {
window.clearInterval(this._intervalId);
}
this._intervalId = undefined;
this._pendingRequest = false;
}
private async _trackAndPerformAsync(): Promise<void> {
if (this._pendingRequest) {
return;
}
this._pendingRequest = true;
try {
await this._performingFunctionAsync();
} finally {
this._pendingRequest = false;
}
}
}
export const generateAccountHeartbeater = (store: Store): Heartbeater => {
return new Heartbeater(async () => {
await asyncData.fetchAccountInfoAndDispatchToStore(store, { setLoading: false });
});
};
export const generateBuyQuoteHeartbeater = (store: Store): Heartbeater => {
return new Heartbeater(async () => {
await updateBuyQuoteOrFlashErrorAsyncForState(store.getState(), store.dispatch);
return Promise.resolve();
});
};
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