Cache ADSB/AIS calls

server/src/adsb.mjs

@@ -14,14 +14,17 @@ const CSV_CACHE      = resolve(DATA, 'aircraft_db.csv');
 const MAX_HISTORY   = 500;
 const HISTORY_TTL   = 1000 * 60 * 60; // 1 hour
 
+const ADSB_TTL = 1000;
 const CSV_URL        = 'https://s3.opensky-network.org/data-samples/metadata/aircraft-database-complete-2024-06.csv';
 const MIL_RANGES_URL = ':8080/db-3.14.1708/ranges.js';
 
 const MILITARY_OPERATORS  = ['air force', 'army', 'navy', 'marine', 'coast guard', 'military', 'defence', 'defense', 'luftwaffe', 'RAF', 'USAF', 'USN', 'USMC'];
 const CARGO_OPERATORS     = ['fedex', 'ups', 'dhl', 'cargo', 'freight', 'logistic', 'atlas air', 'kalitta', 'air freight'];
-const PASSENGER_OPERATORS = ['airlines', 'airways', 'air ', 'jet', 'easyjet', 'ryanair', 'delta', 'united', 'american', 'avianca', 'southwest', 'lufthansa', 'emirates', 'british'];
+const PASSENGER_OPERATORS = ['airlines', 'airways', 'air ', 'jet', 'jetblue', 'easyjet', 'ryanair', 'delta', 'united', 'american', 'avianca', 'southwest', 'lufthansa', 'emirates', 'british'];
 const MILITARY_CLASSES    = ['H1M', 'H2M', 'L1M', 'L2M', 'L4M', 'A0'];
 
+let adsbCache = null;
+let adsbCacheTs = 0;
 const noRecord = [];
 const history = new Map();
 const milRanges = [];
@@ -150,7 +153,7 @@ function isIcaoInMilitaryRange(icao) {
 
 function wordMatch(text, keyword) {
 	if (!text) return false;
-	const escaped = keyword.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+	const escaped = keyword.replace(/[.*+?^${}()|[\]\\]/gi, '\\$&');
 	return new RegExp(`(?<![\\w])${escaped}(?![\\w])`, 'i').test(text);
 }
 
@@ -200,7 +203,6 @@ async function scrapeHexDatabase(icao) {
 
 	const cells = row.find('td');
 	return {
-		country:      $(cells[0]).text().trim() || null,
 		registration: $(cells[1]).text().trim() || null,
 		aircraft:     $(cells[2]).text().trim() || null,
 		operator:     $(cells[3]).text().trim() || null,
@@ -288,6 +290,7 @@ export async function enrichAircraft(a) {
 }
 
 export async function getADSB() {
+	if (adsbCache && Date.now() - adsbCacheTs < ADSB_TTL) return adsbCache;
 	const { ADSB_URL } = cfg();
 	if (!ADSB_URL) return [];
 	const r = await fetchWithTimeout(`${ADSB_URL}:8080/data/aircraft.json`);
@@ -304,11 +307,13 @@ export async function getADSB() {
 		if (trail.length > MAX_HISTORY) trail.shift();
 	}
 
-	return Promise.all(aircraft.map(async a => {
+	adsbCache = await Promise.all(aircraft.map(async a => {
 		a = await enrichAircraft(a);
 		a.icon = getIcon(a);
 		return a;
 	}));
+	adsbCacheTs = Date.now();
+	return adsbCache;
 }
 
 export async function getADSBHistory(icao) {

server/src/ais.mjs

@@ -8,6 +8,10 @@ const SENDER_TYPE = {
 	12: 'AtoN', 13: 'SART/EPIRB'
 };
 
+let aisCache = null;
+let aisCacheTs = 0;
+const AIS_TTL = 1000;
+
 function decodeMsgTypes(raw) {
 	const types = [];
 	for (let i = 0; i < 32; i++) {
@@ -38,6 +42,7 @@ function decodeFlags(flags) {
 }
 
 export async function getAIS() {
+	if (aisCache && Date.now() - aisCacheTs < AIS_TTL) return aisCache;
 	const {ADSB_URL} = cfg();
 	if (!ADSB_URL) return {data: []};
 	const r = await fetch(`${ADSB_URL}:9990/api/ships_array.json`);
@@ -45,7 +50,7 @@ export async function getAIS() {
 
 	const staticMap = new Map(staticRows.map(row => [row[0], row]));
 
-	return dynamic.map(row => {
+	aisCache = dynamic.map(row => {
 		const [mmsi, lat, lon, distance, bearing, heading,
 			cog, speed, status, rrsi, ppm, count, msg_type,
 			last_signal, last_group, group_mask, flags, altitude,
@@ -79,4 +84,6 @@ export async function getAIS() {
 			status
 		};
 	});
+	aisCacheTs = Date.now();
+	return aisCache;
 }