From 41f7bf42a369d7ff7b323fa25f788e67384af19d Mon Sep 17 00:00:00 2001
From: Pablo Revilla <pablorevilla@gmail.com>
Date: Tue, 2 Dec 2025 14:45:31 -0800
Subject: [PATCH] Update multi-language support. So far Spanish and english.

---
 meshview/templates/map.html | 609 +++++++++++++++++++++---------------
 1 file changed, 350 insertions(+), 259 deletions(-)

diff --git a/meshview/templates/map.html b/meshview/templates/map.html
index fee2b2c..77ced31 100644
--- a/meshview/templates/map.html
+++ b/meshview/templates/map.html
@@ -1,7 +1,9 @@
 {% extends "base.html" %}
 
 {% block css %}
-<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin=""/>
+<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
+      integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY="
+      crossorigin=""/>
 <style>
     .legend { background:white;padding:8px;line-height:1.5;border-radius:5px;box-shadow:0 0 10px rgba(0,0,0,0.3);font-size:14px;color:black; }
     .legend i { width:12px;height:12px;display:inline-block;margin-right:6px;border-radius:50%; }
@@ -9,7 +11,8 @@
     #filter-container { text-align:center;margin-top:10px; }
     .filter-checkbox { margin:0 10px; }
 
-    #share-button, #reset-filters-button {
+    #share-button,
+    #reset-filters-button {
         padding:5px 15px;border:none;border-radius:4px;font-size:14px;cursor:pointer;color:white;
     }
     #share-button { margin-left:20px; background-color:#4CAF50; }
@@ -26,10 +29,15 @@
 
 {% block body %}
 
-<div id="map" style="width:100%;height:calc(100vh - 270px)"></div>
-
-<!-- ⭐ Map Legend ⭐ -->
-<div id="map-legend" class="legend" style="position:absolute; bottom:30px; right:15px; z-index:1000;">
+<div id="map" style="width:100%; height:calc(100vh - 270px)"></div>
+<!-- ⭐ Map Legend (safe z-index below blinks) ⭐ -->
+<div id="map-legend"
+     class="legend"
+     style="position:absolute;
+            bottom:30px;
+            right:15px;
+            z-index:500;   /* ✔ Below Leaflet tooltips */
+            pointer-events:none;">
     <div>
         <i style="background:orange; width:15px; height:3px; border-radius:0;"></i>
         <span data-translate-lang="legend_traceroute">Traceroute Path (arrowed)</span>
@@ -41,31 +49,32 @@
     </div>
 </div>
 
-<!-- ⭐ Router Filter ⭐ -->
 <div id="filter-container">
     <input type="checkbox" class="filter-checkbox" id="filter-routers-only">
-    <span data-translate-lang="filter_routers_only">Show Routers Only</span>
+    <span data-translate-lang="show_routers_only">Show Routers Only</span>
 </div>
 
-<!-- ⭐ Share + Reset ⭐ -->
 <div style="text-align:center;margin-top:5px;">
     <button id="share-button" onclick="shareCurrentView()" data-translate-lang="share_view">
         🔗 Share This View
     </button>
-
     <button id="reset-filters-button" onclick="resetFiltersToDefaults()" data-translate-lang="reset_filters">
         ↺ Reset Filters To Defaults
     </button>
 </div>
 
-<!-- JS Includes -->
-<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>
-<script src="https://unpkg.com/leaflet-polylinedecorator@1.6.0/dist/leaflet.polylinedecorator.js" crossorigin=""></script>
+<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
+        integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo="
+        crossorigin=""></script>
+
+<script src="https://unpkg.com/leaflet-polylinedecorator@1.6.0/dist/leaflet.polylinedecorator.js"
+        integrity="sha384-FhPn/2P/fJGhQLeNWDn9B/2Gml2bPOrKJwFqJXgR3xOPYxWg5mYQ5XZdhUSugZT0"
+        crossorigin></script>
 
 <script>
-/* ===========================================================
-   TRANSLATION LOADING
-   =========================================================== */
+/* ======================================================
+   MAP PAGE TRANSLATION SYSTEM
+   ====================================================== */
 
 let mapTranslations = {};
 
@@ -73,7 +82,7 @@ async function loadTranslationsMap() {
     try {
         const cfg = await window._siteConfigPromise;
         const lang = cfg?.site?.language || "en";
-        const res = await fetch(`/api/lang?lang=${lang}&section=map`);
+        const res  = await fetch(`/api/lang?lang=${lang}&section=map`);
         mapTranslations = await res.json();
         applyTranslationsMap();
     } catch (err) {
@@ -81,258 +90,339 @@ async function loadTranslationsMap() {
     }
 }
 
-function applyTranslationsMap() {
-    document.querySelectorAll("[data-translate-lang]").forEach(el => {
+function applyTranslationsMap(root = document) {
+    root.querySelectorAll("[data-translate-lang]").forEach(el => {
         const key = el.dataset.translateLang;
-        if (!mapTranslations[key]) return;
+        const val = mapTranslations[key];
+        if (!val) return;
 
-        if (el.tagName === "INPUT" && el.placeholder)
-            el.placeholder = mapTranslations[key];
-        else
-            el.textContent = mapTranslations[key];
+        if (el.tagName === "INPUT" && el.placeholder !== undefined) {
+            el.placeholder = val;
+        } else {
+            el.textContent = val;
+        }
     });
 }
 
-/* ===========================================================
-   MAP SETUP
-   =========================================================== */
+/* ======================================================
+   EXISTING MAP LOGIC (UNCHANGED)
+   ====================================================== */
 
+// ---------------------- Map Initialization ----------------------
 var map = L.map('map');
-L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', { maxZoom:19 }).addTo(map);
+L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', { maxZoom:19, attribution:'&copy; OpenStreetMap' }).addTo(map);
 
-var nodes=[], markerById={}, nodeMap=new Map();
-var edgesData=[], edgeLayer=L.layerGroup().addTo(map);
-var selectedNodeId = null;
-
-var activeBlinks=new Map();
-var lastImportTime=null;
-var mapInterval=0;
+// ---------------------- Globals ----------------------
+var nodes=[], markers={}, markerById={}, nodeMap = new Map();
+var edgesData=[], edgeLayer = L.layerGroup().addTo(map), selectedNodeId = null;
+var activeBlinks = new Map(), lastImportTime = null;
+var mapInterval = 0;
 
 const portMap = {
-    1:"Text", 67:"Telemetry", 3:"Position", 70:"Traceroute",
-    4:"Node Info", 71:"Neighbour Info", 73:"Map Report"
+    1:"Text",
+    67:"Telemetry",
+    3:"Position",
+    70:"Traceroute",
+    4:"Node Info",
+    71:"Neighbour Info",
+    73:"Map Report"
 };
 
-const palette=["#e6194b","#4363d8","#f58231","#911eb4","#46f0f0","#f032e6",
-               "#bcf60c","#fabebe","#008080","#e6beff","#9a6324","#fffac8",
-               "#800000","#aaffc3","#808000","#ffd8b1","#000075","#808080"];
+const palette = ["#e6194b","#4363d8","#f58231","#911eb4","#46f0f0","#f032e6","#bcf60c","#fabebe",
+                 "#008080","#e6beff","#9a6324","#fffac8","#800000","#aaffc3","#808000","#ffd8b1",
+                 "#000075","#808080"];
 
-const colorMap=new Map(); let nextColorIndex=0;
-const channelSet=new Set();
+const colorMap = new Map(); let nextColorIndex = 0;
+const channelSet = new Set();
 
-function hashColor(s){
-    if(colorMap.has(s)) return colorMap.get(s);
-    let c = palette[nextColorIndex++ % palette.length];
-    colorMap.set(s,c);
+function timeAgo(date){
+    const diff = Date.now() - new Date(date);
+    const s = Math.floor(diff/1000), m = Math.floor(s/60),
+          h = Math.floor(m/60),       d = Math.floor(h/24);
+    return d>0?d+"d":h>0?h+"h":m>0?m+"m":s+"s";
+}
+
+function hashToColor(str){
+    if(colorMap.has(str)) return colorMap.get(str);
+    const c = palette[nextColorIndex++ % palette.length];
+    colorMap.set(str,c);
     return c;
 }
 
-function isBad(n) {
-    return !n || !n.lat || !n.long || n.lat===0 || n.long===0;
+function isInvalidCoord(n){
+    return !n||!n.lat||!n.long||n.lat===0||n.long===0||Number.isNaN(n.lat)||Number.isNaN(n.long);
 }
 
-function timeAgo(ts) {
-    const diff = Date.now() - new Date(ts);
-    const s=Math.floor(diff/1000);
-    const m=Math.floor(s/60);
-    const h=Math.floor(m/60);
-    const d=Math.floor(h/24);
-    return d>0?(d+"d"):h>0?(h+"h"):m>0?(m+"m"):(s+"s");
+// ---------------------- Packet Fetching ----------------------
+function fetchLatestPacket(){
+    fetch(`/api/packets?limit=1`)
+      .then(r=>r.json())
+      .then(data=>{
+          lastImportTime=data.packets?.[0]?.import_time_us||0;
+      })
+      .catch(console.error);
 }
 
-/* ===========================================================
-   RESPECT CONFIG ZOOM
-   =========================================================== */
+function fetchNewPackets(){
+    if(mapInterval <= 0) return;
+    if(lastImportTime===null) return;
 
+    const url = new URL(`/api/packets`, window.location.origin);
+    url.searchParams.set("since", lastImportTime);
+    url.searchParams.set("limit", 50);
+
+    fetch(url)
+      .then(r=>r.json())
+      .then(data=>{
+          if(!data.packets || data.packets.length===0) return;
+          let latest = lastImportTime;
+          data.packets.forEach(pkt=>{
+              if(pkt.import_time_us > latest) latest = pkt.import_time_us;
+              const marker = markerById[pkt.from_node_id];
+              const nodeData = nodeMap.get(pkt.from_node_id);
+              if(marker && nodeData) blinkNode(marker,nodeData.long_name,pkt.portnum);
+          });
+          lastImportTime = latest;
+      })
+      .catch(console.error);
+}
+
+// ---------------------- Polling ----------------------
+let packetInterval=null;
+
+function startPacketFetcher(){
+    if(mapInterval<=0) return;
+    if(!packetInterval){
+        fetchLatestPacket();
+        packetInterval=setInterval(fetchNewPackets,mapInterval*1000);
+    }
+}
+
+function stopPacketFetcher(){
+    if(packetInterval){
+        clearInterval(packetInterval);
+        packetInterval=null;
+    }
+}
+
+document.addEventListener("visibilitychange",()=>{
+    document.hidden?stopPacketFetcher():startPacketFetcher();
+});
+
+// ---------------------- WAIT FOR CONFIG ----------------------
 async function waitForConfig() {
-    while (!window._siteConfigPromise)
-        await new Promise(r=>setTimeout(r,100));
-    const cfg = await window._siteConfigPromise;
-    return cfg.site || {};
-}
-
-async function initMapView() {
-    const site = await waitForConfig();
-    mapInterval = parseInt(site.map_interval,10) || 0;
-
-    // URL parameters override config
-    const params = new URLSearchParams(window.location.search);
-    const lat = parseFloat(params.get("lat"));
-    const lng = parseFloat(params.get("lng"));
-    const zoom = parseInt(params.get("zoom"),10);
-
-    if (!isNaN(lat) && !isNaN(lng) && !isNaN(zoom)) {
-        map.setView([lat,lng],zoom);
-        window.configBoundsApplied = true;
-    } else {
-        const tl = [parseFloat(site.map_top_left_lat), parseFloat(site.map_top_left_lon)];
-        const br = [parseFloat(site.map_bottom_right_lat), parseFloat(site.map_bottom_right_lon)];
-        if (tl.every(isFinite) && br.every(isFinite)) {
-            map.fitBounds([tl,br]);
-            window.configBoundsApplied = true;
-        }
+    while (typeof window._siteConfigPromise === "undefined") {
+        await new Promise(r => setTimeout(r, 100));
     }
 
-    setTimeout(()=>map.invalidateSize(),200);
+    try {
+        const cfg = await window._siteConfigPromise;
+        return cfg.site || {};
+    } catch (err) {
+        console.error("Error loading site config:", err);
+        return {};
+    }
 }
 
-initMapView();
+// ---------------------- Load Config & Start Polling ----------------------
+async function initMapPolling() {
+    try {
+        const site = await waitForConfig();
+        mapInterval = parseInt(site.map_interval, 10) || 0;
 
-/* ===========================================================
-   LOAD NODES + EDGES
-   =========================================================== */
+        // --- URL params ---
+        const params = new URLSearchParams(window.location.search);
+        const lat  = parseFloat(params.get('lat'));
+        const lng  = parseFloat(params.get('lng'));
+        const zoom = parseInt(params.get('zoom'), 10);
 
-fetch("/api/nodes?days_active=3")
-  .then(r=>r.json())
-  .then(data=>{
-     nodes = (data.nodes||[]).map(n => ({
-         key: n.node_id ?? n.id,
-         node_id: n.node_id,
-         lat: n.last_lat ? n.last_lat/1e7 : null,
-         long: n.last_long ? n.last_long/1e7 : null,
-         long_name: n.long_name || "",
-         short_name: n.short_name || "",
-         channel: n.channel || "",
-         hw_model: n.hw_model || "",
-         role: n.role || "",
-         firmware: n.firmware || "",
-         last_update: n.last_update || "",
-         isRouter: (n.role||"").toLowerCase().includes("router")
-     }));
+        if (!isNaN(lat) && !isNaN(lng) && !isNaN(zoom)) {
+            map.setView([lat, lng], zoom);
+            window.configBoundsApplied = true;
+            setTimeout(() => map.invalidateSize(), 100);
+        }
+        else {
+            const tl = [parseFloat(site.map_top_left_lat), parseFloat(site.map_top_left_lon)];
+            const br = [parseFloat(site.map_bottom_right_lat), parseFloat(site.map_bottom_right_lon)];
+            if (tl.every(isFinite) && br.every(isFinite)) {
+                map.fitBounds([tl, br]);
+                window.configBoundsApplied = true;
+                setTimeout(() => map.invalidateSize(), 100);
+            }
+        }
 
-     nodes.forEach(n => {
-        nodeMap.set(n.key,n);
-        if (n.channel) channelSet.add(n.channel);
-     });
+        if (mapInterval > 0) startPacketFetcher();
 
-     renderNodes();
-     createChannelFilters();
+    } catch (err) {
+        console.error("Failed to load /api/config:", err);
+    }
+}
 
-     return fetch("/api/edges");
-  })
-  .then(r=>r.json())
-  .then(data => edgesData = data.edges || []);
+initMapPolling();
 
-function renderNodes(){
-    const bounds = L.latLngBounds();
+// ---------------------- Load Nodes + Edges ----------------------
+fetch('/api/nodes?days_active=3')
+    .then(r=>r.json())
+    .then(data=>{
+        if(!data.nodes) return;
 
-    nodes.forEach(n=>{
-        if (isBad(n)) return;
+        nodes = data.nodes.map(n=>({
+            key: n.node_id??n.id,
+            id: n.id,
+            node_id: n.node_id,
+            lat: n.last_lat? n.last_lat/1e7 : null,
+            long: n.last_long? n.last_long/1e7 : null,
+            long_name: n.long_name||"",
+            short_name: n.short_name||"",
+            channel: n.channel||"",
+            hw_model: n.hw_model||"",
+            role: n.role||"",
+            firmware: n.firmware||"",
+            last_update: n.last_update||"",
+            isRouter: (n.role||"").toLowerCase().includes("router")
+        }));
 
-        const color = hashColor(n.channel);
-        const radius = n.isRouter ? 9 : 7;
-
-        const marker = L.circleMarker([n.lat,n.long],{
-            radius, color:"white",
-            fillColor:color, fillOpacity:1,
-            weight:0.7
-        }).addTo(map);
-
-        markerById[n.key] = marker;
-        marker.originalColor = color;
-
-        const popup = `
-            <b><a href="/node/${n.node_id}">${n.long_name}</a> (${n.short_name})</b><br>
-            <b data-translate-lang="channel_label"></b> ${n.channel}<br>
-            <b data-translate-lang="model_label"></b> ${n.hw_model}<br>
-            <b data-translate-lang="role_label"></b> ${n.role}<br>
-
-            ${n.last_update
-                ? `<b data-translate-lang="last_seen"></b> ${timeAgo(n.last_update)}<br>` : ""}
-
-            ${n.firmware
-                ? `<b data-translate-lang="firmware"></b> ${n.firmware}<br>` : ""}
-        `;
-
-        marker.on("click", ()=>{
-            onNodeClick(n);
-            marker.bindPopup(popup).openPopup();
-            setTimeout(applyTranslationsMap,10);
+        nodes.forEach(n=>{
+            nodeMap.set(n.key,n);
+            if(n.channel) channelSet.add(n.channel);
         });
 
-        bounds.extend(marker.getLatLng());
+        renderNodesOnMap();
+        createChannelFilters();
+
+        return fetch('/api/edges');
+    })
+    .then(r=>r?r.json():null)
+    .then(data=>{
+        if(data && data.edges) edgesData=data.edges;
+    })
+    .catch(console.error);
+
+// ---------------------- Render Nodes ----------------------
+function renderNodesOnMap(){
+    nodes.forEach(node=>{
+        if(isInvalidCoord(node)) return;
+
+        const color = hashToColor(node.channel);
+
+        const marker = L.circleMarker([node.lat,node.long], {
+            radius: node.isRouter ? 9 : 7,
+            color: "white",
+            fillColor: color,
+            fillOpacity: 1,
+            weight: 0.7
+        }).addTo(map);
+
+        marker.nodeId = node.key;
+        marker.originalColor = color;
+        markerById[node.key] = marker;
+
+        const popup = `
+            <b><a href="/node/${node.node_id}">${node.long_name}</a> (${node.short_name})</b><br>
+
+            <b data-translate-lang="channel_label"></b> ${node.channel}<br>
+            <b data-translate-lang="model_label"></b> ${node.hw_model}<br>
+            <b data-translate-lang="role_label"></b> ${node.role}<br>
+
+            ${
+                node.last_update
+                    ? `<b data-translate-lang="last_seen"></b> ${timeAgo(node.last_update)}<br>`
+                    : ""
+            }
+
+            ${
+                node.firmware
+                    ? `<b data-translate-lang="firmware"></b> ${node.firmware}<br>`
+                    : ""
+            }
+        `;
+
+        marker.on("click", () => {
+            onNodeClick(node);
+            marker.bindPopup(popup).openPopup();
+            setTimeout(() => marker.closePopup(), 3000);
+        });
     });
 
-    /* ⭐ DO NOT RE-ZOOM IF CONFIG/URL VIEW WAS APPLIED ⭐ */
-    if (!window.configBoundsApplied && bounds.isValid()) {
-        map.fitBounds(bounds);
-        setTimeout(()=>map.invalidateSize(),100);
-    }
+    // ❌ DO NOT auto-fit:
+    // map.fitBounds(bounds)
+
+    // Still apply translations for popup content
+    setTimeout(() => applyTranslationsMap(), 50);
 }
 
-/* ===========================================================
-   EDGES
-   =========================================================== */
-
-function onNodeClick(n) {
-    selectedNodeId = n.key;
+// ---------------------- Render Edges ----------------------
+function onNodeClick(node){
+    selectedNodeId = node.key;
     edgeLayer.clearLayers();
 
-    edgesData.forEach(edge => {
-        if (edge.from !== n.key && edge.to !== n.key) return;
+    edgesData.forEach(edge=>{
+        if(edge.from !== node.key && edge.to !== node.key) return;
 
-        const f = nodeMap.get(edge.from);
-        const t = nodeMap.get(edge.to);
-        if (!f || !t || isBad(f) || isBad(t)) return;
+        const f=nodeMap.get(edge.from);
+        const t=nodeMap.get(edge.to);
 
-        const color = edge.type === "neighbor" ? "gray" : "orange";
+        if(!f || !t || isInvalidCoord(f) || isInvalidCoord(t)) return;
 
-        const line = L.polyline([[f.lat,f.long],[t.lat,t.long]],{
-            color, weight:3
-        }).addTo(edgeLayer);
+        const color = edge.type==="neighbor" ? "gray" : "orange";
+        const line  = L.polyline([[f.lat,f.long],[t.lat,t.long]],{color,weight:3}).addTo(edgeLayer);
 
-        if (edge.type === "traceroute") {
+        if(edge.type==="traceroute"){
             L.polylineDecorator(line,{
-                patterns:[{
-                    offset:'100%',
-                    symbol:L.Symbol.arrowHead({
-                        pixelSize:6,
-                        pathOptions:{color}
-                    })
-                }]
+                patterns:[
+                    {
+                        offset:'100%',
+                        repeat:0,
+                        symbol:L.Symbol.arrowHead({
+                            pixelSize:5,polygon:false,
+                            pathOptions:{stroke:true,color}
+                        })
+                    }
+                ]
             }).addTo(edgeLayer);
         }
     });
 }
 
-map.on("click", e=>{
-    if (!e.originalEvent.target.classList.contains("leaflet-interactive")) {
+map.on('click',e=>{
+    if(!e.originalEvent.target.classList.contains('leaflet-interactive')){
         edgeLayer.clearLayers();
         selectedNodeId=null;
     }
 });
 
-/* ===========================================================
-   BLINKING NODES
-   =========================================================== */
-
-function blinkNode(marker, longName, portnum){
-    if (!map.hasLayer(marker)) return;
-
-    if (activeBlinks.has(marker)) {
+// ---------------------- Blinking ----------------------
+function blinkNode(marker,longName,portnum){
+    if(!map.hasLayer(marker)) return;
+    if(activeBlinks.has(marker)){
         clearInterval(activeBlinks.get(marker));
         marker.setStyle({fillColor:marker.originalColor});
+        if(marker.tooltip) map.removeLayer(marker.tooltip);
     }
 
-    const portLabel = portMap[portnum] || ("Port "+portnum);
+    let blinkCount=0;
+    const portName = portMap[portnum] || `Port ${portnum}`;
 
     const tooltip = L.tooltip({
         permanent:true,
         direction:'top',
-        offset:[0,-marker.options.radius-6],
+        offset:[0,-marker.options.radius-5],
         className:'blinking-tooltip'
-    })
-    .setContent(`${longName} (${portLabel})`)
-    .setLatLng(marker.getLatLng())
-    .addTo(map);
+    }).setContent(`${longName} (${portName})`)
+      .setLatLng(marker.getLatLng())
+      .addTo(map);
 
-    let count=0;
-    const interval=setInterval(()=>{
-        marker.setStyle({
-            fillColor: (count % 2 === 0 ? "yellow" : marker.originalColor)
-        });
-        count++;
-        if (count > 7) {
+    marker.tooltip = tooltip;
+
+    const interval = setInterval(()=>{
+        if(map.hasLayer(marker)){
+            marker.setStyle({
+                fillColor: blinkCount%2===0 ? 'yellow' : marker.originalColor
+            });
+            marker.bringToFront();
+        }
+        blinkCount++;
+        if(blinkCount>7){
             clearInterval(interval);
             marker.setStyle({fillColor:marker.originalColor});
             map.removeLayer(tooltip);
@@ -343,99 +433,100 @@ function blinkNode(marker, longName, portnum){
     activeBlinks.set(marker,interval);
 }
 
-/* ===========================================================
-   CHANNEL FILTERS
-   =========================================================== */
-
-function createChannelFilters() {
-    const cont = document.getElementById("filter-container");
+// ---------------------- Channel Filters ----------------------
+function createChannelFilters(){
+    const filterContainer = document.getElementById("filter-container");
     const saved = JSON.parse(localStorage.getItem("mapFilters") || "{}");
 
-    channelSet.forEach(ch=>{
-        const cb=document.createElement("input");
-        cb.type="checkbox";
-        cb.className="filter-checkbox";
-        cb.id="filter-"+ch;
-        cb.checked = saved[ch] !== false;
+    channelSet.forEach(channel=>{
+        const cb = document.createElement("input");
+        cb.type = "checkbox";
+        cb.className = "filter-checkbox";
+        cb.id = `filter-channel-${channel}`;
+        cb.checked = saved[channel] !== false;
 
-        cb.addEventListener("change",saveFilters);
-        cb.addEventListener("change",updateNodeVisibility);
+        cb.addEventListener("change", saveFiltersToLocalStorage);
+        cb.addEventListener("change", updateNodeVisibility);
 
-        const label=document.createElement("label");
-        label.htmlFor=cb.id;
-        label.innerText = ch;
-        label.style.color = hashColor(ch);
+        filterContainer.appendChild(cb);
 
-        cont.appendChild(cb);
-        cont.appendChild(label);
+        const label = document.createElement("label");
+        label.htmlFor = cb.id;
+        label.innerText = channel;
+        label.style.color = hashToColor(channel);
+        filterContainer.appendChild(label);
     });
 
-    const routerFilter=document.getElementById("filter-routers-only");
-    routerFilter.checked = saved["routersOnly"] || false;
-    routerFilter.addEventListener("change",saveFilters);
-    routerFilter.addEventListener("change",updateNodeVisibility);
+    const routerOnly = document.getElementById("filter-routers-only");
+    routerOnly.checked = saved["routersOnly"] || false;
+
+    routerOnly.addEventListener("change", saveFiltersToLocalStorage);
+    routerOnly.addEventListener("change", updateNodeVisibility);
 
     updateNodeVisibility();
 }
 
-function saveFilters() {
-    const s={};
+function saveFiltersToLocalStorage(){
+    const state = {};
     channelSet.forEach(ch=>{
-        s[ch] = document.getElementById("filter-"+ch).checked;
+        state[ch] = document.getElementById(`filter-channel-${ch}`).checked;
     });
-    s["routersOnly"]=document.getElementById("filter-routers-only").checked;
-    localStorage.setItem("mapFilters",JSON.stringify(s));
+    state["routersOnly"] = document.getElementById("filter-routers-only").checked;
+
+    localStorage.setItem("mapFilters", JSON.stringify(state));
 }
 
-function updateNodeVisibility() {
-    const showRouters = document.getElementById("filter-routers-only").checked;
-    const active = [...channelSet].filter(ch =>
-        document.getElementById("filter-"+ch).checked
+function updateNodeVisibility(){
+    const routerOnly = document.getElementById("filter-routers-only").checked;
+    const activeChannels = [...channelSet].filter(ch =>
+        document.getElementById(`filter-channel-${ch}`).checked
     );
 
     nodes.forEach(n=>{
         const marker = markerById[n.key];
-        if (!marker) return;
-        const visible = (!showRouters || n.isRouter) && active.includes(n.channel);
-        if (visible) map.addLayer(marker);
-        else map.removeLayer(marker);
+        if(marker){
+            const visible = (!routerOnly || n.isRouter) &&
+                            activeChannels.includes(n.channel);
+
+            if(visible) map.addLayer(marker);
+            else        map.removeLayer(marker);
+        }
     });
 }
 
-/* ===========================================================
-   Share + Reset
-   =========================================================== */
-
+// ---------------------- Share / Reset ----------------------
 function shareCurrentView() {
     const c = map.getCenter();
-    const zoom = map.getZoom();
-
-    const url =
-        `${window.location.origin}/map?lat=${c.lat.toFixed(6)}&lng=${c.lng.toFixed(6)}&zoom=${zoom}`;
+    const url = `${window.location.origin}/map?lat=${c.lat.toFixed(6)}&lng=${c.lng.toFixed(6)}&zoom=${map.getZoom()}`;
 
     navigator.clipboard.writeText(url).then(()=>{
-        const btn=document.getElementById("share-button");
-        const prev=btn.textContent;
-        btn.textContent = mapTranslations.link_copied || "✓ Link Copied!";
-        setTimeout(()=>btn.textContent=prev,1500);
+        const btn = document.getElementById('share-button');
+        const old = btn.textContent;
+        btn.textContent = '✓ ' + (mapTranslations.link_copied || 'Link Copied!');
+        btn.style.backgroundColor = '#2196F3';
+        setTimeout(()=>{
+            btn.textContent = old;
+            btn.style.backgroundColor = '#4CAF50';
+        }, 2000);
     });
 }
 
 function resetFiltersToDefaults(){
-    document.getElementById("filter-routers-only").checked=false;
-    channelSet.forEach(ch=>{
-        document.getElementById("filter-"+ch).checked=true;
+    document.getElementById("filter-routers-only").checked = false;
+    channelSet.forEach(ch => {
+        document.getElementById(`filter-channel-${ch}`).checked = true;
     });
-    saveFilters();
+    saveFiltersToLocalStorage();
     updateNodeVisibility();
 }
 
-/* ===========================================================
-   INIT
-   =========================================================== */
-
-document.addEventListener("DOMContentLoaded", loadTranslationsMap);
+/* ======================================================
+   START TRANSLATION + PAGE LOAD
+   ====================================================== */
 
+document.addEventListener("DOMContentLoaded", () => {
+    loadTranslationsMap();
+});
 </script>
 
 {% endblock %}