Publish and respond to bridge/config/devices/get (#1329)

* - When sent a empty payload to bridge/config/devices/get , publish to
  'bridge/config/devices'
- For bridge/config/devices & bridge/config/devices/get only ever
  publish to the corresponding topic if a empty payload is sent.
- Make sure devicesPublish doesn't treat messages to
  bridge/config/devices/get as a zigbee device.

* fix eslinting errors

* Update bridgeConfig.js

lib/extension/bridgeConfig.js

@@ -3,7 +3,7 @@ const logger = require('../util/logger');
 const zigbeeShepherdConverters = require('zigbee-shepherd-converters');
 const utils = require('../util/utils');
 
-const configRegex = new RegExp(`${settings.get().mqtt.base_topic}/bridge/config/\\w+`, 'g');
+const configRegex = new RegExp(`${settings.get().mqtt.base_topic}/bridge/config/((?:\\w+/get)|(?:\\w+))`);
 const allowedLogLevels = ['error', 'warn', 'info', 'debug'];
 
 class BridgeConfig {
@@ -37,6 +37,7 @@ class BridgeConfig {
             'log_level': this.logLevel,
             'devices': this.devices,
             'groups': this.groups,
+            'devices/get': this.devices,
             'rename': this.rename,
             'remove': this.remove,
             'ban': this.ban,
@@ -147,7 +148,11 @@ class BridgeConfig {
             return payload;
         });
 
-        this.mqtt.log('devices', devices);
+        if (topic.split('/').pop() == 'get') {
+            this.mqtt.publish(`bridge/config/devices`, JSON.stringify(devices), {});
+        } else {
+            this.mqtt.log('devices', devices);
+        }
     }
 
     groups(topic, message) {
@@ -244,7 +249,7 @@ class BridgeConfig {
             return false;
         }
 
-        const option = topic.split('/').slice(-1)[0];
+        const option = topic.match(configRegex)[1];
 
         if (!this.supportedOptions.hasOwnProperty(option)) {
             return false;

lib/extension/devicePublish.js

@@ -69,7 +69,9 @@ class DevicePublish {
 
         // Remove base from topic
         topic = topic.replace(`${settings.get().mqtt.base_topic}/`, '');
-
+        if (topic.match(/bridge\/config/)) {
+            return null;
+        }
         // Parse type from topic
         const type = topic.substr(topic.lastIndexOf('/') + 1, topic.length);
 

test/devicePublish.test.js

@@ -657,6 +657,27 @@ describe('DevicePublish', () => {
             expect(parsed.postfix).toBe('');
         });
 
+
+        it('Should not respond to bridge/config/devices/get', () => {
+            const topic = 'zigbee2mqtt/bridge/config/devices/get';
+            const parsed = devicePublish.parseTopic(topic);
+            expect(parsed).toBeNull();
+        });
+
+        it('Should not respond to bridge/config/devices/set', () => {
+            const topic = 'zigbee2mqtt/bridge/config/devices/set';
+            const parsed = devicePublish.parseTopic(topic);
+            expect(parsed).toBeNull();
+        });
+
+
+        it('Should not respond to bridge/config/devices', () => {
+            const topic = 'zigbee2mqtt/bridge/config/devices';
+            const parsed = devicePublish.parseTopic(topic);
+            expect(parsed).toBeNull();
+        });
+
+
         it('Should parse topic with when base topic has multiple slashes', () => {
             jest.spyOn(settings, 'get').mockReturnValue({
                 mqtt: {