Rename "roles" to "units". Put units in their own folders.

lib/units/device/plugins/wifi.js

@@ -0,0 +1,53 @@
+var syrup = require('syrup')
+
+var logger = require('../../../util/logger')
+var wire = require('../../../wire')
+var wireutil = require('../../../wire/util')
+
+module.exports = syrup.serial()
+  .dependency(require('./service'))
+  .dependency(require('../support/router'))
+  .dependency(require('../support/push'))
+  .define(function(options, service, router, push) {
+    var log = logger.createLogger('device:plugins:wifi')
+
+    router.on(wire.WifiSetEnabledMessage, function(channel, message) {
+      var reply = wireutil.reply(options.serial)
+      log.info('Setting Wifi "%s"', message.enabled)
+      service.setWifiEnabled(message.enabled)
+        .timeout(30000)
+        .then(function() {
+          push.send([
+            channel
+          , reply.okay()
+          ])
+        })
+        .catch(function(err) {
+          log.error('Setting Wifi enabled failed', err.stack)
+          push.send([
+            channel
+          , reply.fail(err.message)
+          ])
+        })
+    })
+
+    router.on(wire.WifiGetStatusMessage, function(channel){
+      var reply = wireutil.reply(options.serial)
+      log.info('Getting Wifi status')
+      service.getWifiStatus()
+        .timeout(30000)
+        .then(function(enabled) {
+          push.send([
+            channel
+          , reply.okay(enabled ? 'wifi_enabled' : 'wifi_disabled')
+          ])
+        })
+        .catch(function(err) {
+          log.error('Getting Wifi status failed', err.stack)
+          push.send([
+            channel
+          , reply.fail(err.message)
+          ])
+        })
+    })
+  })