exports.id = 'checknewday';
exports.title = 'Check if new day';
exports.group = 'Worksys';
exports.color = '#5D9CEC';
exports.version = '0.0.1';
exports.output = ['white'];
exports.input = true;
exports.author = 'Rastislav Kovac';
exports.icon = 'cloud-upload';

exports.readme = `Checks, if day changed. If yes, it sends it to connected components`;

const { execSync } = require('child_process');

const weekday = ["Nedele","Pondeli","Uteri","Streda","Ctvrtek","Patek","Sobota"];

function getDate() {
	// for some reason new Date() function does not set month and year in local timezone, so we use "timedatectl" command
	let dateFromCommand = execSync("timedatectl", {}).toString();

	let first = dateFromCommand.search("time:");
	let last = dateFromCommand.search(" CE");
	dateFromCommand = dateFromCommand.slice(first, last);  //Thu 2022-04-07 13:38:03

	const d = new Date(dateFromCommand);
	return d;
}

exports.install = function(instance) {

	let date = null; 

	const checkNewDay = () =>
	{
		const d = getDate();
		const today = d.getDate();	//napr 21 (dvadsiateho prveho)

		if(today !== date)
		{
			date = today;
			const month = d.getMonth(); // 0-11
			const day = d.getDay(); // 0-6 (0 = nedela)
			const datum = `${today}.${month + 1}`;

			const result = [datum, weekday[day]];
			instance.send(0, result);	// ['22.12', 'Streda']
		}
	}

	instance.on('data', flowdata => {
		checkNewDay();
	})

}