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// Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
// All rights reserved. MIT License.
import { deno as pb } from "./msg.pb";
import { pubInternal, sub } from "./dispatch";
import { assert } from "./util";
let nextTimerId = 1;
// tslint:disable-next-line:no-any
export type TimerCallback = (...args: any[]) => void;
interface Timer {
id: number;
cb: TimerCallback;
interval: boolean;
// tslint:disable-next-line:no-any
args: any[];
delay: number; // milliseconds
}
const timers = new Map<number, Timer>();
export function initTimers() {
sub("timers", onMessage);
}
function onMessage(payload: Uint8Array) {
const msg = pb.Msg.decode(payload);
assert(msg.command === pb.Msg.Command.TIMER_READY);
const { timerReadyId, timerReadyDone } = msg;
const timer = timers.get(timerReadyId);
if (!timer) {
return;
}
timer.cb(...timer.args);
if (timerReadyDone) {
timers.delete(timerReadyId);
}
}
function setTimer(
cb: TimerCallback,
delay: number,
interval: boolean,
// tslint:disable-next-line:no-any
args: any[]
): number {
const timer = {
id: nextTimerId++,
interval,
delay,
args,
cb
};
timers.set(timer.id, timer);
pubInternal("timers", {
command: pb.Msg.Command.TIMER_START,
timerStartId: timer.id,
timerStartInterval: timer.interval,
timerStartDelay: timer.delay
});
return timer.id;
}
export function setTimeout(
cb: TimerCallback,
delay: number,
// tslint:disable-next-line:no-any
...args: any[]
): number {
return setTimer(cb, delay, false, args);
}
export function setInterval(
cb: TimerCallback,
delay: number,
// tslint:disable-next-line:no-any
...args: any[]
): number {
return setTimer(cb, delay, true, args);
}
export function clearTimer(id: number) {
timers.delete(id);
pubInternal("timers", {
command: pb.Msg.Command.TIMER_CLEAR,
timerClearId: id
});
}
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