fixing adsb connection

server/airtraffic.mjs

@@ -6,6 +6,9 @@ import { fileURLToPath }    from 'url'
 const DIR         = dirname(fileURLToPath(import.meta.url))
 const SHAPES_PATH = resolve(DIR, 'public', 'aircraft.json')
 
+const history = new Map() // icao -> [{lat, lon, alt, ts}]
+const MAX_HISTORY = 500
+
 export async function getShapes() {
 	return JSON.parse(await readFile(SHAPES_PATH, 'utf8'))
 }
@@ -13,20 +16,22 @@ export async function getShapes() {
 export async function getAirTraffic() {
 	const { ADSB_URL } = cfg()
 	if (!ADSB_URL) return { data: [] }
-	const r = await fetch(`${ADSB_URL}/re-api/?all`)
+	const r = await fetch(`${ADSB_URL}/data/aircraft.json`)
 	const j = await r.json()
-	return { data: j.aircraft || [] }
+	const aircraft = j.aircraft || []
+
+	for (const a of aircraft) {
+		if (!a.hex || !a.lat || !a.lon) continue
+		const key = a.hex.toLowerCase()
+		if (!history.has(key)) history.set(key, [])
+		const trail = history.get(key)
+		trail.push({ latitude: a.lat, longitude: a.lon, altitude: a.alt_baro || 0, ts: Date.now() })
+		if (trail.length > MAX_HISTORY) trail.shift()
+	}
+
+	return { data: aircraft }
 }
 
 export async function getAirTrafficHistory(icao) {
-	const { ADSB_URL } = cfg()
-	if (!ADSB_URL) return { history: [] }
-	const r = await fetch(`${ADSB_URL}/re-api/?trace&icao=${icao}`)
-	const j = await r.json()
-	const history = (j.trace || []).map(t => ({
-		latitude:  t[1],
-		longitude: t[2],
-		altitude:  t[3] || 0,
-	}))
-	return { history }
+	return { history: history.get(icao?.toLowerCase()) || [] }
 }