AIS, ADSB, and Range

server/src/ais.mjs

@@ -1,14 +1,57 @@
+import {cfg} from './config.mjs';
+
+const CHANNEL_MAP = {0: 'A, B', 1: 'A', 2: 'B'};
+const SENDER_TYPE = {
+	0: 'Unknown',
+	1: 'Base Station',
+	2: 'Class A',
+	3: 'Class B',
+	4: 'SAR Aircraft',
+	5: 'Aid to Navigation',
+	6: 'Class B CS',
+	7: 'Sart/Epirb/MOB'
+};
+
+function decodeMsgTypes(status_raw) {
+	const types = [];
+	for (let i = 0; i < 32; i++) {
+		if (status_raw & (1 << i)) types.push(i);  // was i + 1
+	}
+	return types;
+}
+
 export async function getAIS() {
 	const {ADSB_URL} = cfg();
 	if(!ADSB_URL) return {data: []};
 	const r = await fetch(`${ADSB_URL}:9990/api/ships_array.json`);
 	const j = await r.json();
 
-	const {keys, values} = j;
+	const {values} = j;
 	const boats = values.map(row => {
-		const obj = {type: 'vessel'};
-		keys.forEach((key, i) => obj[key] = row[i]);
-		return obj;
+		const [
+			mmsi, lat, lon, distance, bearing, rssi, count, drift,
+			unknown_bool, speed, heading, course, altitude,
+			destination, eta, dimension, receiver, sources, channels,
+			msg_type, msg_type2, status_raw, country,
+			ship_type, callsign, imo, draught,
+			unknown1, unknown2, unknown3,
+			name, name2, name3,
+			last_signal, count2, sender_type, channels2, unknown4, in_range
+		] = row;
+
+		return {
+			mmsi, type: SENDER_TYPE[sender_type],
+			lat, lon, altitude,
+			heading, drift, speed,
+			distance, bearing, course,
+			destination, eta,
+			rssi, count, receiver, sources,
+			msg_type: decodeMsgTypes(status_raw),
+			channels: CHANNEL_MAP[channels] ?? channels,
+			ship_type, imo, draught,
+			country, callsign, name: name || name2 || name3,
+			last_signal, in_range
+		};
 	});
 
 	return boats;