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/*
This file is part of GNU Taler
(C) 2020 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Imports.
*/
import { Logger } from "@gnu-taler/taler-util";
import { TimerAPI, TimerHandle } from "@gnu-taler/taler-wallet-core";
const nullTimerHandle = {
clear() {
// do nothing
return;
},
unref() {
// do nothing
return;
},
};
const logger = new Logger("ServiceWorkerTimerGroup.ts");
/**
* Implementation of [[TimerAPI]] using alarm API
*/
export class ServiceWorkerTimerAPI implements TimerAPI {
/**
* Call a function every time the delay given in milliseconds passes.
*/
every(delayMs: number, callback: () => void): TimerHandle {
const seconds = delayMs / 1000;
const periodInMinutes = Math.round(seconds < 61 ? 1 : seconds / 60);
logger.trace(`creating a alarm every ${periodInMinutes} ${delayMs}`)
chrome.alarms.create("wallet-worker", { periodInMinutes })
chrome.alarms.onAlarm.addListener((a) => {
logger.trace(`alarm called, every: ${a.name}`)
callback()
})
return new AlarmHandle();
}
/**
* Call a function after the delay given in milliseconds passes.
*/
after(delayMs: number, callback: () => void): TimerHandle {
const seconds = delayMs / 1000;
const delayInMinutes = Math.round(seconds < 61 ? 1 : seconds / 60);
logger.trace(`creating a alarm after ${delayInMinutes} ${delayMs}`)
chrome.alarms.create("wallet-worker", { delayInMinutes })
chrome.alarms.onAlarm.addListener((a) => {
logger.trace(`alarm called, after: ${a.name}`)
callback();
})
return new AlarmHandle();
}
}
class AlarmHandle implements TimerHandle {
clear(): void {
chrome.alarms.clear("wallet-worker", (result) => {
logger.info(`Alarm 'wallet-worker' was cleared: ${result}`)
})
return;
}
unref(): void {
return;
}
}
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