cleanup
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@ -11,6 +11,119 @@ import { getLocationForWifiMemoized } from "../proxy/wigle";
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const locationService = container.resolve(LocationService);
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const wifiScanService = container.resolve(WifiScanService);
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const CalculateTtnGatewayLocation = async (event: TtnMessageReceivedEvent) => {
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// Get location based on TTN Gateways
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const virtualLocation = {
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latitude: undefined as number | undefined,
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longitude: undefined as number | undefined,
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};
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if (!event.ttnGateways || event.ttnGateways.length === 0) {
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console.log("No TTN Gateway location received!")
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} else {
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let totalWeight = 0;
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let weightedLatitude = 0;
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let weightedLongitude = 0;
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event.ttnGateways.forEach(gw => {
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const weight = 1 / Math.abs(gw.rssi); // Higher RSSI (closer to 0) gives more weight
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totalWeight += weight;
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weightedLatitude += gw.latitude * weight;
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weightedLongitude += gw.longitude * weight;
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});
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// Calculate the weighted average to get the virtual location
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const virtualLocation = {
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latitude: weightedLatitude / totalWeight,
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longitude: weightedLongitude / totalWeight
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};
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console.log("Tracker location based on TTN Gateway location:", virtualLocation);
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}
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return {
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ttn_latitude: virtualLocation.latitude,
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ttn_longitude: virtualLocation.longitude,
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};
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};
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const CalculateWifiLocation = async (event: TtnMessageReceivedEvent) => {
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// Get location based on WiFi Scans
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const virtualLocation = {
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latitude: undefined as number | undefined,
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longitude: undefined as number | undefined,
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};
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if (!event.wifis || event.wifis.length === 0) {
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console.log("No WiFi scans received!")
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} else {
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// Process Wi-Fi data to compute weighted location
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const wifiScans = await Promise.all(
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event.wifis.map(async (wifi) => {
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// Create new WiFi Scan entry if wigle.net reported location
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const apiResponse = await getLocationForWifiMemoized(wifi.mac);
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return {
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lp_ttn_end_device_uplinks_id: event.lp_ttn_end_device_uplinks_id,
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mac: wifi.mac,
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rssi: wifi.rssi,
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latitude: apiResponse?.results[0]?.trilat,
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longitude: apiResponse?.results[0]?.trilong,
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};
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})
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);
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await wifiScanService.createWifiScans(wifiScans);
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const { totalWeight, weightedLatitude, weightedLongitude } =
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wifiScans.reduce(
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(acc, { latitude, longitude, rssi }) => {
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if (latitude && longitude && rssi !== 0) {
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const weight = 1 / Math.abs(rssi);
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acc.totalWeight += weight;
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acc.weightedLatitude += latitude * weight;
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acc.weightedLongitude += longitude * weight;
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}
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return acc;
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},
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{
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totalWeight: 0,
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weightedLatitude: 0,
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weightedLongitude: 0,
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}
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);
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// Calculate the weighted average to get the virtual location
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virtualLocation.latitude = weightedLatitude / totalWeight;
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virtualLocation.longitude = weightedLongitude / totalWeight;
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console.log("Tracker location based on WiFi Scan location:", virtualLocation);
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}
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return {
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wifi_latitude: virtualLocation.latitude,
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wifi_longitude: virtualLocation.longitude,
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};
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};
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const CalculateGnssLocation = async (event: TtnMessageReceivedEvent) => {
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// Default virtual location with undefined coordinates
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const virtualLocation = {
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latitude: undefined as number | undefined,
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longitude: undefined as number | undefined,
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};
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if (virtualLocation.latitude === undefined || virtualLocation.longitude === undefined) {
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console.log("No valid GNSS location received!");
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}
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return {
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gnss_latitude: virtualLocation.latitude,
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gnss_longitude: virtualLocation.longitude,
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};
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};
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domainEventEmitter.on(
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TtnMessageReceivedEventName,
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async (event: TtnMessageReceivedEvent) => {
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@ -23,83 +136,21 @@ domainEventEmitter.on(
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var ttn_gw_based_latitude: number | undefined = undefined;
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var ttn_gw_based_longitude: number | undefined = undefined;
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// Get location based on TTN Gateways
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if (!event.ttnGateways || event.ttnGateways.length === 0) {
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console.log("No TTN Gateway location received!")
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} else {
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let totalWeight = 0;
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let weightedLatitude = 0;
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let weightedLongitude = 0;
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event.ttnGateways.forEach(gw => {
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const weight = 1 / Math.abs(gw.rssi); // Higher RSSI (closer to 0) gives more weight
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totalWeight += weight;
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weightedLatitude += gw.latitude * weight;
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weightedLongitude += gw.longitude * weight;
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});
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// Calculate the weighted average to get the virtual location
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const virtualLocation = {
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latitude: weightedLatitude / totalWeight,
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longitude: weightedLongitude / totalWeight
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};
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console.log("Tracker location based on TTN Gateway location:", virtualLocation);
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ttn_gw_based_latitude = virtualLocation.latitude;
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ttn_gw_based_longitude = virtualLocation.longitude;
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if (event.ttnGateways && event.ttnGateways.length > 0) {
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const virtualLocation = await CalculateTtnGatewayLocation(event);
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ttn_gw_based_latitude = virtualLocation.ttn_latitude;
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ttn_gw_based_longitude = virtualLocation.ttn_longitude;
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}
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// Get location based on WiFi Scans
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if (!event.wifis || event.wifis.length === 0) {
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console.log("No WiFi scans received!")
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} else {
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let totalWeight = 0;
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let weightedLatitude = 0;
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let weightedLongitude = 0;
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// Process Wi-Fi data to compute weighted location
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await Promise.all(
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event.wifis.map(async (wifi) => {
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const apiResponse = await getLocationForWifiMemoized(wifi.mac);
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if ((apiResponse != undefined) && (apiResponse?.totalResults > 0)) {
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// Create new WiFi Scan entry if wigle.net reported location
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const newWifiScan = wifiScanService.createWifiScan({
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lp_ttn_end_device_uplinks_id: event.lp_ttn_end_device_uplinks_id,
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mac: wifi.mac,
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rssi: wifi.rssi,
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latitude: apiResponse?.results[0]?.trilat,
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longitude: apiResponse?.results[0]?.trilong,
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})
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// Calculate weight based on RSSI (higher signal strength gives more weight)
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const weight = 1 / Math.abs((await newWifiScan).rssi);
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totalWeight += weight;
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// Accumulate weighted latitude and longitude
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weightedLatitude += (await newWifiScan).latitude * weight;
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weightedLongitude += (await newWifiScan).longitude * weight;
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}
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})
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);
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// Calculate the weighted average to get the virtual location
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const virtualLocation = {
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latitude: weightedLatitude / totalWeight,
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longitude: weightedLongitude / totalWeight
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};
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console.log("Tracker location based on WiFi Scan location:", virtualLocation);
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wifi_based_latitude = virtualLocation.latitude;
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wifi_based_longitude = virtualLocation.longitude;
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if (event.wifis && event.wifis.length > 0) {
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const virtualLocation = await CalculateWifiLocation(event);
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wifi_based_latitude = virtualLocation.wifi_latitude;
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wifi_based_longitude = virtualLocation.wifi_longitude;
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}
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// Get location based on GNSS
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if ((event.gnssLocation.latitude) && (event.gnssLocation.longitude)) {
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gnss_based_latitude = event.gnssLocation.latitude;
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gnss_based_longitude = event.gnssLocation.longitude;
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} else {
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console.log("No GNSS location received!")
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}
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const virtualLocation = await CalculateGnssLocation(event);
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gnss_based_latitude = virtualLocation.gnss_latitude;
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gnss_based_longitude = virtualLocation.gnss_longitude;
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const newLocation = await locationService.createLocation({
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lp_ttn_end_device_uplinks_id: event.lp_ttn_end_device_uplinks_id,
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