"use strict";

import RSSIRepo from '../Repos.SQLite/RSSIRepo.mjs';
import RSSI from './RSSI.mjs';

/**
 * A single data reading received over the TTN.
 * @param	{string}	id		The id of this reading.
 * @param	{number}	lat		The latitude at which this reading was taken.
 * @param	{number}	long	The longitude at which this reading was taken.
 * @param	{RSSI[]}	rssis	An array of RSSI objects containing the signal strengths, as reported by 1 or mroe gateways.
 */
class Reading {
	constructor(id, lat, long, rssis) {
		/** @type {string} */
		this.id = id;
		/** @type {number} */
		this.lat = lat;
		/** @type {number} */
		this.long = long;
		/** @type {RSSI[]} */
		this.rssis = rssis;
	}
	
	/**
	 * Returns the RSSI reading for the strongest received signal strength.
	 * @return {RSSI|null} The RSSI object that contains the strongest received signal strength.
	 */
	get best_rssi() {
		if(this.rssis.length == 0)
			return null;
		
		return this.rssis.reduce(
			(prev, next) => prev.rssi > next.rssi ? prev : next,
			this.rssis[0]
		);
	}
}

export default Reading;