cbp-lib/src/_helpers/timer.js

Libraries for cbp

'use strict'

import {Log} from "../_helpers/Log"

const DefaultTimer = 5

let _ = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : {};
export class Timer {
    constructor(callback, name) {
        this._name = name
        this._callback = callback
    }

    get now() {
        return parseInt(Date.now() / 1000)
    }

    init(duration) {
        Log.debug("Timer.init: Timer initialized...")
        if (duration <= 0) {
            duration = 1
        }

        duration = parseInt(duration)

        var expiration = this.now + duration

        if (this._expiration === expiration && this._timer) {
            Log.debug("Timer.js: is initialized")
            return;
        }

        this.cancel();

        this._expiration = expiration
        Log.debug("Timer: Setting setInterval.." + this._expiration)
        this._timer = _.setInterval(this.callback.bind(this), DefaultTimer * 1000);
    }

    cancel() {
        if (this._timer) {
            Log.debug("Timer.js: stopping timer...")
            _.clearInterval(this._timer)
            this._timer = null
        }
    }

    callback() {
        var diff = this._expiration - this.now;
        Log.debug("Timer.callback;  " + this._name + " timer expires in: " + diff);
        if (this._expiration <= this.now) {
            this.cancel()
            this._callback(1)
        }
    }
}