import RotClient from './RotClient.js';
import { XMLParser } from 'fast-xml-parser';
import fs from 'node:fs';

export default class RotRouter {
	constructor() {
		this.clients = [];
		this.loadConfig();

		this.xmlParser = new XMLParser();
	}

	processN1mmXml(xml) {
		try {
			const msg = this.xmlParser.parse(xml);
			const band = parseInt(msg?.N1MMRotor?.freqband.split(',')[0] || 0, 10);
			const az = parseInt(msg?.N1MMRotor?.goazi.split(',')[0] || 0, 10);
			if (!band || !az) {
				console.error(`Missing band or azimuth`);
				return;
			}
			const client = this.findClientForBand(band);
			if (!client) {
				console.error(`No RotClient found for the ${band} band!`);
				return;
			}

			client.turn(az);
		} catch (ex) {
			console.error(`Failed to parse: ${xml}`, ex);
		}
	}

	loadConfig() {
		const raw = fs.readFileSync("config.json", 'utf-8');
		const parsed = JSON.parse(raw);
		for (const [label, clientConfig] of Object.entries(parsed)) {
			this.clients[label] = new RotClient(label, clientConfig);
		}
	}

	findClientForBand(band) {
		return Object.values(this.clients).find(c => c.hasBand(band)) || null;
	}
}