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Backend sends rssi_current but frontend was reading net.signal || net.rssi, causing RSSI to parse as NaN and silently skipping all meter/audio updates. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
557 lines
19 KiB
JavaScript
557 lines
19 KiB
JavaScript
/**
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* WiFi Locate — WiFi AP Location Mode
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* Real-time signal strength meter with proximity audio for locating WiFi devices by BSSID.
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* Reuses existing WiFi v2 API (/wifi/v2/start, /wifi/v2/stop, /wifi/v2/stream, /wifi/v2/status).
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*/
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const WiFiLocate = (function() {
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'use strict';
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const API_BASE = '/wifi/v2';
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const MAX_RSSI_POINTS = 60;
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const SIGNAL_LOST_TIMEOUT_MS = 30000;
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const BAR_SEGMENTS = 20;
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const TX_POWER = -30;
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const ENV_PATH_LOSS = {
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FREE_SPACE: 2.0,
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OUTDOOR: 2.8,
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INDOOR: 3.5,
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};
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let eventSource = null;
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let targetBssid = null;
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let targetSsid = null;
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let rssiHistory = [];
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let chartCanvas = null;
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let chartCtx = null;
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let audioCtx = null;
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let audioEnabled = false;
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let beepTimer = null;
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let currentEnvironment = 'OUTDOOR';
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let handoffData = null;
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let modeActive = false;
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let locateActive = false;
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let rssiMin = null;
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let rssiMax = null;
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let rssiSum = 0;
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let rssiCount = 0;
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let lastUpdateTime = 0;
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let signalLostTimer = null;
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function debugLog(...args) {
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console.debug('[WiFiLocate]', ...args);
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}
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// ========================================================================
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// Lifecycle
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// ========================================================================
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function init() {
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modeActive = true;
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chartCanvas = document.getElementById('wflRssiChart');
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chartCtx = chartCanvas ? chartCanvas.getContext('2d') : null;
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buildBarSegments();
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}
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function start() {
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const bssidInput = document.getElementById('wflBssid');
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const bssid = (bssidInput?.value || '').trim().toUpperCase();
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if (!bssid || !/^([0-9A-F]{2}:){5}[0-9A-F]{2}$/.test(bssid)) {
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if (typeof showNotification === 'function') {
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showNotification('Invalid BSSID', 'Enter a valid MAC address (AA:BB:CC:DD:EE:FF)');
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}
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return;
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}
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targetBssid = bssid;
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targetSsid = handoffData?.ssid || null;
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locateActive = true;
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// Reset stats
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rssiHistory = [];
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rssiMin = null;
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rssiMax = null;
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rssiSum = 0;
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rssiCount = 0;
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lastUpdateTime = 0;
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// Update UI
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updateTargetDisplay();
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showHud(true);
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updateStatDisplay('--', '--', '--', '--');
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updateRssiDisplay('--', '');
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updateDistanceDisplay('--');
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clearBarSegments();
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hideSignalLost();
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// Toggle buttons
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const startBtn = document.getElementById('wflStartBtn');
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const stopBtn = document.getElementById('wflStopBtn');
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const statusEl = document.getElementById('wflScanStatus');
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if (startBtn) startBtn.style.display = 'none';
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if (stopBtn) stopBtn.style.display = '';
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if (statusEl) statusEl.style.display = '';
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// Check if WiFi scan is running, auto-start deep scan if needed
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checkAndStartScan().then(() => {
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connectSSE();
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});
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}
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function stop() {
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locateActive = false;
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// Close SSE
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if (eventSource) {
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eventSource.close();
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eventSource = null;
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}
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// Clear timers
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clearBeepTimer();
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clearSignalLostTimer();
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// Stop audio
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stopAudio();
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// Toggle buttons
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const startBtn = document.getElementById('wflStartBtn');
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const stopBtn = document.getElementById('wflStopBtn');
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const statusEl = document.getElementById('wflScanStatus');
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if (startBtn) startBtn.style.display = '';
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if (stopBtn) stopBtn.style.display = 'none';
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if (statusEl) statusEl.style.display = 'none';
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// Show idle UI
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showHud(false);
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}
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function destroy() {
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stop();
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modeActive = false;
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targetBssid = null;
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targetSsid = null;
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}
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function setActiveMode(active) {
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modeActive = active;
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}
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// ========================================================================
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// WiFi Scan Management
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// ========================================================================
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async function checkAndStartScan() {
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try {
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const resp = await fetch(`${API_BASE}/scan/status`);
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const data = await resp.json();
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if (data.scanning && data.scan_type === 'deep') {
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debugLog('Deep scan already running');
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return;
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}
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// Auto-start deep scan
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debugLog('Starting deep scan for locate');
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await fetch(`${API_BASE}/scan/start`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ scan_type: 'deep' }),
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});
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} catch (e) {
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debugLog('Error checking/starting scan:', e);
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}
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}
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// ========================================================================
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// SSE Connection
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// ========================================================================
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function connectSSE() {
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if (eventSource) {
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eventSource.close();
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}
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const streamUrl = `${API_BASE}/stream`;
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eventSource = new EventSource(streamUrl);
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eventSource.onopen = () => {
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debugLog('SSE connected');
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};
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eventSource.onmessage = (event) => {
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if (!locateActive || !targetBssid) return;
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try {
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const data = JSON.parse(event.data);
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if (data.type === 'keepalive') return;
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// Filter for our target BSSID
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if (data.type === 'network_update' && data.network) {
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const net = data.network;
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const bssid = (net.bssid || '').toUpperCase();
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if (bssid === targetBssid) {
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const rssi = parseInt(net.rssi_current ?? net.signal ?? net.rssi, 10);
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if (!isNaN(rssi)) {
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// Pick up SSID if we don't have it yet
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if (!targetSsid && net.essid) {
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targetSsid = net.essid;
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updateTargetDisplay();
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}
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updateMeter(rssi);
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}
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}
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}
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} catch (e) {
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debugLog('SSE parse error:', e);
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}
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};
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eventSource.onerror = () => {
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debugLog('SSE error, reconnecting...');
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if (locateActive) {
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setTimeout(() => {
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if (locateActive) connectSSE();
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}, 3000);
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}
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};
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}
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// ========================================================================
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// Signal Processing
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// ========================================================================
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function updateMeter(rssi) {
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lastUpdateTime = Date.now();
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hideSignalLost();
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resetSignalLostTimer();
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// Update stats
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rssiCount++;
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rssiSum += rssi;
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if (rssiMin === null || rssi < rssiMin) rssiMin = rssi;
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if (rssiMax === null || rssi > rssiMax) rssiMax = rssi;
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const avg = Math.round(rssiSum / rssiCount);
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// Update history
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rssiHistory.push(rssi);
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if (rssiHistory.length > MAX_RSSI_POINTS) {
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rssiHistory.shift();
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}
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// Determine strength class
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let cls = 'weak';
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if (rssi >= -50) cls = 'good';
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else if (rssi >= -70) cls = 'medium';
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// Update displays
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updateRssiDisplay(rssi, cls);
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updateDistanceDisplay(estimateDistance(rssi));
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updateBarSegments(rssi);
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updateStatDisplay(rssi, rssiMin, rssiMax, avg);
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drawRssiChart();
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// Audio
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if (audioEnabled) {
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scheduleBeeps(rssi);
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}
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}
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function estimateDistance(rssi) {
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const n = ENV_PATH_LOSS[currentEnvironment] || 2.8;
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const dist = Math.pow(10, (TX_POWER - rssi) / (10 * n));
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if (dist < 1) return dist.toFixed(2) + ' m';
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if (dist < 100) return dist.toFixed(1) + ' m';
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return Math.round(dist) + ' m';
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}
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// ========================================================================
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// UI Updates
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// ========================================================================
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function showHud(show) {
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const hud = document.getElementById('wflHud');
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const waiting = document.getElementById('wflWaiting');
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if (hud) hud.style.display = show ? '' : 'none';
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if (waiting) waiting.style.display = show ? 'none' : '';
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}
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function updateTargetDisplay() {
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const ssidEl = document.getElementById('wflTargetSsid');
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const bssidEl = document.getElementById('wflTargetBssid');
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if (ssidEl) ssidEl.textContent = targetSsid || 'Unknown SSID';
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if (bssidEl) bssidEl.textContent = targetBssid || '--';
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}
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function updateRssiDisplay(value, cls) {
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const el = document.getElementById('wflRssiValue');
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if (!el) return;
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el.textContent = typeof value === 'number' ? value + ' dBm' : value;
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el.className = 'wfl-rssi-display' + (cls ? ' ' + cls : '');
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}
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function updateDistanceDisplay(text) {
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const el = document.getElementById('wflDistance');
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if (el) el.textContent = text;
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}
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function updateStatDisplay(current, min, max, avg) {
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const set = (id, v) => {
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const el = document.getElementById(id);
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if (el) el.textContent = v;
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};
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set('wflStatCurrent', typeof current === 'number' ? current + ' dBm' : current);
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set('wflStatMin', typeof min === 'number' ? min + ' dBm' : min);
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set('wflStatMax', typeof max === 'number' ? max + ' dBm' : max);
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set('wflStatAvg', typeof avg === 'number' ? avg + ' dBm' : avg);
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}
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// ========================================================================
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// Bar Segments
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// ========================================================================
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function buildBarSegments() {
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const container = document.getElementById('wflBarContainer');
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if (!container || container.children.length === BAR_SEGMENTS) return;
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container.innerHTML = '';
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for (let i = 0; i < BAR_SEGMENTS; i++) {
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const seg = document.createElement('div');
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seg.className = 'wfl-bar-segment';
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container.appendChild(seg);
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}
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}
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function updateBarSegments(rssi) {
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const container = document.getElementById('wflBarContainer');
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if (!container) return;
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// Map RSSI -100..-20 to 0..20 active segments
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const strength = Math.max(0, Math.min(1, (rssi + 100) / 80));
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const activeCount = Math.round(strength * BAR_SEGMENTS);
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const segments = container.children;
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for (let i = 0; i < segments.length; i++) {
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segments[i].classList.toggle('active', i < activeCount);
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}
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}
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function clearBarSegments() {
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const container = document.getElementById('wflBarContainer');
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if (!container) return;
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for (let i = 0; i < container.children.length; i++) {
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container.children[i].classList.remove('active');
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}
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}
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// ========================================================================
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// RSSI Chart
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// ========================================================================
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function drawRssiChart() {
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if (!chartCtx || !chartCanvas) return;
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const w = chartCanvas.width = chartCanvas.parentElement.clientWidth - 16;
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const h = chartCanvas.height = chartCanvas.parentElement.clientHeight - 24;
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chartCtx.clearRect(0, 0, w, h);
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if (rssiHistory.length < 2) return;
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const minR = -100, maxR = -20;
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const range = maxR - minR;
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// Grid lines
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chartCtx.strokeStyle = 'rgba(255,255,255,0.05)';
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chartCtx.lineWidth = 1;
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[-30, -50, -70, -90].forEach(v => {
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const y = h - ((v - minR) / range) * h;
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chartCtx.beginPath();
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chartCtx.moveTo(0, y);
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chartCtx.lineTo(w, y);
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chartCtx.stroke();
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});
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// Draw RSSI line
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const step = w / (MAX_RSSI_POINTS - 1);
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chartCtx.beginPath();
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chartCtx.strokeStyle = '#00ff88';
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chartCtx.lineWidth = 2;
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rssiHistory.forEach((rssi, i) => {
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const x = i * step;
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const y = h - ((rssi - minR) / range) * h;
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if (i === 0) chartCtx.moveTo(x, y);
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else chartCtx.lineTo(x, y);
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});
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chartCtx.stroke();
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// Fill under
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const lastIdx = rssiHistory.length - 1;
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chartCtx.lineTo(lastIdx * step, h);
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chartCtx.lineTo(0, h);
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chartCtx.closePath();
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chartCtx.fillStyle = 'rgba(0,255,136,0.08)';
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chartCtx.fill();
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}
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// ========================================================================
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// Audio Proximity
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// ========================================================================
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function playTone(freq, duration) {
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if (!audioCtx || audioCtx.state !== 'running') return;
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const osc = audioCtx.createOscillator();
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const gain = audioCtx.createGain();
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osc.connect(gain);
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gain.connect(audioCtx.destination);
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osc.frequency.value = freq;
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osc.type = 'sine';
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gain.gain.value = 0.2;
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gain.gain.exponentialRampToValueAtTime(0.001, audioCtx.currentTime + duration);
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osc.start();
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osc.stop(audioCtx.currentTime + duration);
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}
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function playProximityTone(rssi) {
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if (!audioCtx || audioCtx.state !== 'running') return;
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const strength = Math.max(0, Math.min(1, (rssi + 100) / 70));
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const freq = 400 + strength * 800;
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const duration = 0.06 + (1 - strength) * 0.12;
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playTone(freq, duration);
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}
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function scheduleBeeps(rssi) {
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clearBeepTimer();
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playProximityTone(rssi);
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// Repeat interval: stronger signal = faster beeps
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const strength = Math.max(0, Math.min(1, (rssi + 100) / 70));
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const interval = 1200 - strength * 1000; // 1200ms (weak) to 200ms (strong)
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beepTimer = setInterval(() => {
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if (audioEnabled && locateActive) {
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playProximityTone(rssi);
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} else {
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clearBeepTimer();
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}
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}, interval);
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}
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function clearBeepTimer() {
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if (beepTimer) {
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clearInterval(beepTimer);
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beepTimer = null;
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}
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}
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function toggleAudio() {
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const cb = document.getElementById('wflAudioEnable');
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audioEnabled = cb?.checked || false;
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if (audioEnabled) {
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if (!audioCtx) {
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try {
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audioCtx = new (window.AudioContext || window.webkitAudioContext)();
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} catch (e) {
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console.error('[WiFiLocate] AudioContext creation failed:', e);
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return;
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}
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}
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audioCtx.resume().then(() => {
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playTone(600, 0.08);
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});
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} else {
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stopAudio();
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}
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}
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function stopAudio() {
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audioEnabled = false;
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clearBeepTimer();
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const cb = document.getElementById('wflAudioEnable');
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if (cb) cb.checked = false;
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}
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// ========================================================================
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// Signal Lost Timer
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// ========================================================================
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function resetSignalLostTimer() {
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clearSignalLostTimer();
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signalLostTimer = setTimeout(() => {
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if (locateActive) showSignalLost();
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}, SIGNAL_LOST_TIMEOUT_MS);
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}
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function clearSignalLostTimer() {
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if (signalLostTimer) {
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clearTimeout(signalLostTimer);
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signalLostTimer = null;
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}
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}
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function showSignalLost() {
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const el = document.getElementById('wflSignalLost');
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if (el) el.style.display = '';
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clearBeepTimer();
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}
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function hideSignalLost() {
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const el = document.getElementById('wflSignalLost');
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if (el) el.style.display = 'none';
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}
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// ========================================================================
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// Environment
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// ========================================================================
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function setEnvironment(env) {
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currentEnvironment = env;
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document.querySelectorAll('.wfl-env-btn').forEach(btn => {
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btn.classList.toggle('active', btn.dataset.env === env);
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});
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// Recalc distance with last known RSSI
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if (rssiHistory.length > 0) {
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const lastRssi = rssiHistory[rssiHistory.length - 1];
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updateDistanceDisplay(estimateDistance(lastRssi));
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}
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}
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// ========================================================================
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// Handoff from WiFi mode
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// ========================================================================
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function handoff(info) {
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handoffData = info;
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const bssidInput = document.getElementById('wflBssid');
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if (bssidInput) bssidInput.value = info.bssid || '';
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targetSsid = info.ssid || null;
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const card = document.getElementById('wflHandoffCard');
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const nameEl = document.getElementById('wflHandoffName');
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const metaEl = document.getElementById('wflHandoffMeta');
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if (card) card.style.display = '';
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if (nameEl) nameEl.textContent = info.ssid || 'Hidden Network';
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if (metaEl) metaEl.textContent = info.bssid || '';
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// Switch to WiFi Locate mode
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if (typeof switchMode === 'function') {
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switchMode('wifi_locate');
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}
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}
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function clearHandoff() {
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handoffData = null;
|
|
const card = document.getElementById('wflHandoffCard');
|
|
if (card) card.style.display = 'none';
|
|
}
|
|
|
|
// ========================================================================
|
|
// Public API
|
|
// ========================================================================
|
|
|
|
return {
|
|
init,
|
|
start,
|
|
stop,
|
|
destroy,
|
|
handoff,
|
|
clearHandoff,
|
|
setEnvironment,
|
|
toggleAudio,
|
|
setActiveMode,
|
|
};
|
|
})();
|