infobox: added wifi channel, airtime and batctl nexthop (#38)

* infobox: added wifi channel, airtime and batctl nexthop

* simplify

* kill all semicolons

* update data locations

I'd suggest that channel information go under nodeinfo. Airtime and nexthop are changing variables which should go under statistics.

* filter out nodes with faulty nodeinfo

* additional nexthop key

The nexthop to the batman gateway has now been made available in gluon master where it will be called 

"gateway_nexthop" the "nexthop" key is also currently in use and should eventually be removed

* sidebar/node: cosmetic changes to gateway/nexthop

* remove data validity check

* move wifi helper function to sidebar/node

* cosmetics

lib/infobox/node.js

@@ -81,6 +81,54 @@ define(["moment", "numeral", "tablesort", "tablesort.numeric"],
     return d.firstseen.fromNow(true)
   }
 
+  function wifiChannelAlias(ch) {
+    var chlist = {
+      "1": "2412 MHz",
+      "2": "2417 MHz",
+      "3": "2422 MHz",
+      "4": "2427 MHz",
+      "5": "2432 MHz",
+      "6": "2437 MHz",
+      "7": "2442 MHz",
+      "8": "2447 MHz",
+      "9": "2452 MHz",
+      "10": "2457 MHz",
+      "11": "2462 MHz",
+      "12": "2467 MHz",
+      "13": "2472 MHz",
+      "36": "5180 MHz (Indoors)",
+      "40": "5200 MHz (Indoors)",
+      "44": "5220 MHz (Indoors)",
+      "48": "5240 MHz (Indoors)",
+      "52": "5260 MHz (Indoors/DFS/TPC)",
+      "56": "5280 MHz (Indoors/DFS/TPC)",
+      "60": "5300 MHz (Indoors/DFS/TPC)",
+      "64": "5320 MHz (Indoors/DFS/TPC)",
+      "100": "5500 MHz (DFS) !!",
+      "104": "5520 MHz (DFS) !!",
+      "108": "5540 MHz (DFS) !!",
+      "112": "5560 MHz (DFS) !!",
+      "116": "5580 MHz (DFS) !!",
+      "120": "5600 MHz (DFS) !!",
+      "124": "5620 MHz (DFS) !!",
+      "128": "5640 MHz (DFS) !!",
+      "132": "5660 MHz (DFS) !!",
+      "136": "5680 MHz (DFS) !!",
+      "140": "5700 MHz (DFS) !!"
+    }
+    if (!(ch in chlist))
+      return ""
+    else
+      return chlist[ch]
+  }
+
+  function showWifiChannel(ch) {
+    if (!ch)
+      return undefined
+
+    return ch + " (" + wifiChannelAlias(ch) + ")"
+  }
+
   function showClients(d) {
     if (!d.flags.online)
       return undefined
@@ -180,6 +228,32 @@ define(["moment", "numeral", "tablesort", "tablesort.numeric"],
     }
   }
 
+  function showAirtime(band, val) {
+    if (!val)
+      return undefined
+
+    return function (el) {
+      el.appendChild(showBar("airtime" + band.toString(), val))
+    }
+  }
+
+  function showGateway(d) {
+    var nh
+    if (dictGet(d.statistics, ["nexthop"]))
+      nh = dictGet(d.statistics, ["nexthop"])
+    if (dictGet(d.statistics, ["gateway_nexthop"]))
+      nh = dictGet(d.statistics, ["gateway_nexthop"])
+    var gw = dictGet(d.statistics, ["gateway"])
+
+    if (gw && !nh)
+      return gw
+    if (gw && nh)
+      if (gw === nh)
+        return gw
+      else
+        return nh + " -> ... -> " + gw
+  }
+
   function showPages(d) {
     var webpages = dictGet(d.nodeinfo, ["pages"])
     if (webpages === null)
@@ -248,11 +322,15 @@ define(["moment", "numeral", "tablesort", "tablesort.numeric"],
     attributeEntry(attributes, "Site", showSite(d, config))
     attributeEntry(attributes, "Uptime", showUptime(d))
     attributeEntry(attributes, "Teil des Netzes", showFirstseen(d))
+    attributeEntry(attributes, "Kanal 2.4 GHz", showWifiChannel(dictGet(d.nodeinfo, ["wireless", "chan2"])))
+    attributeEntry(attributes, "Kanal 5 GHz", showWifiChannel(dictGet(d.nodeinfo, ["wireless", "chan5"])))
+    attributeEntry(attributes, "Airtime 2.4 GHz", showAirtime(2, dictGet(d.statistics, ["wireless", "airtime2"])))
+    attributeEntry(attributes, "Airtime 5 GHz", showAirtime(5, dictGet(d.statistics, ["wireless", "airtime5"])))
     attributeEntry(attributes, "Systemlast", showLoad(d))
     attributeEntry(attributes, "Arbeitsspeicher", showRAM(d))
     attributeEntry(attributes, "IP Adressen", showIPs(d))
     attributeEntry(attributes, "Webseite", showPages(d))
-    attributeEntry(attributes, "Gewähltes Gateway", dictGet(d.statistics, ["gateway"]))
+    attributeEntry(attributes, "Gewähltes Gateway", showGateway(d))
     attributeEntry(attributes, "Autom. Updates", showAutoupdate(d))
     attributeEntry(attributes, "Clients", showClients(d))