How to set the interval for sending messages from the bot?

Question

In contact with

Hello.
The bot is written using https://github.com/node-vk-bot-api/node-vk-bot-api .
I already figured out how to make the basic functionality.
But how do you send emails?
You need to send every 22 hours.
So, according to the algorithm "every Friday at 18:00 Moscow time".

How can this be done in node?

Answer 1

Here is an implementation example

const ONE_MIN = 60 * 1000;
const ONE_HOURS = 60 * 60 * 1000;

let isSentFridayMessage = false;
let startEvery22HoursTimer = new Date();

setInterval(() => {
  // Каждую пятницу в 18  часов
  let currentDate = new Date();
  if (currentDate.getDay() == 5 && currentDate.getHours == 18 && !isSentFridayMessage) {
    // do something 
    isSentFridayMessage = true;
  } else {
    isSentFridayMessage = false
  }

  // Каждые 22 часа
  if (startEvery22HoursTimer < new Date(Date.now() - 22 * ONE_HOURS)) {
    startEvery22HoursTimer = new Date();
    // do something
  }

}, ONE_MIN)