Add channel trait

server/services/google-actions/lib/traits/googleActions.channel.trait.js

@@ -0,0 +1,92 @@
+const { DEVICE_FEATURE_CATEGORIES, DEVICE_FEATURE_TYPES } = require('../../../../utils/constants');
+
+/**
+ * @see https://developers.google.com/assistant/smarthome/traits/channel
+ */
+const volumeTrait = {
+  key: 'action.devices.traits.Channel',
+  features: [
+    {
+      category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+      type: DEVICE_FEATURE_TYPES.TELEVISION.CHANNEL,
+    },
+    {
+      category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+      type: DEVICE_FEATURE_TYPES.TELEVISION.CHANNEL_UP,
+    },
+    {
+      category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+      type: DEVICE_FEATURE_TYPES.TELEVISION.CHANNEL_DOWN,
+    },
+    {
+      category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+      type: DEVICE_FEATURE_TYPES.TELEVISION.VOLUME_MUTE,
+    },
+  ],
+  generateAttributes: (device) => {
+    const { has_feedback: hasFeedback = false } = device.features.find(
+      (feature) =>
+        feature.category === DEVICE_FEATURE_CATEGORIES.TELEVISION &&
+        feature.type === DEVICE_FEATURE_TYPES.TELEVISION.CHANNEL,
+    );
+
+    return {
+      commandOnlyVolume: !hasFeedback,
+    };
+  },
+  states: [],
+  commands: {
+    'action.devices.commands.selectChannel': {
+      mute: {
+        writeValue: (paramValue) => {
+          return paramValue ? 1 : 0;
+        },
+        getFeatures: () => {
+          return [
+            {
+              category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+              type: DEVICE_FEATURE_TYPES.TELEVISION.VOLUME_MUTE,
+            },
+          ];
+        },
+      },
+    },
+    'action.devices.commands.setVolume': {
+      volumeLevel: {
+        writeValue: (paramValue) => {
+          return paramValue;
+        },
+        getFeatures: () => {
+          return [
+            {
+              category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+              type: DEVICE_FEATURE_TYPES.TELEVISION.VOLUME,
+            },
+          ];
+        },
+      },
+    },
+    'action.devices.commands.volumeRelative': {
+      relativeSteps: {
+        writeValue: () => {
+          return 1;
+        },
+        getFeatures: (paramValue) => {
+          const feature = {
+            category: DEVICE_FEATURE_CATEGORIES.TELEVISION,
+            type: DEVICE_FEATURE_TYPES.TELEVISION.VOLUME_UP,
+          };
+          if (paramValue < 0) {
+            feature.type = DEVICE_FEATURE_TYPES.TELEVISION.VOLUME_DOWN;
+          }
+
+          return Array(Math.abs(paramValue)).fill(feature);
+        },
+      },
+    },
+  },
+};
+
+module.exports = {
+  volumeTrait,
+};