Feature/vm detection (#137)

* initial changes for amd

* wip

* fix bug where transcripts were discarded

* a bit of refactoring, and adding support for avmd in config verb

* bug fixes

lib/tasks/config.js

@@ -50,12 +50,19 @@ class TaskConfig extends Task {
       const s = `{${v},${l}}`;
       phrase.push(`set recognizer${s}`);
     }
+    if (this.data.amd) phrase.push('enable amd');
     return  `${this.name}{${phrase.join(',')}`;
   }
 
   async exec(cs) {
     await super.exec(cs);
 
+    if (this.data.amd) {
+      this.startAmd = cs.startAmd;
+      this.stopAmd = cs.stopAmd;
+      this.on('amd', this._onAmdEvent.bind(this, cs));
+    }
+
     if (this.hasSynthesizer) {
       cs.speechSynthesisVendor = this.synthesizer.vendor !== 'default'
         ? this.synthesizer.vendor
@@ -107,6 +114,12 @@ class TaskConfig extends Task {
   async kill(cs) {
     super.kill(cs);
   }
+
+  _onAmdEvent(cs, evt) {
+    this.logger.info({evt}, 'Config:_onAmdEvent');
+    const {actionHook} = this.data.amd;
+    this.performHook(cs, actionHook, evt);
+  }
 }
 
 module.exports = TaskConfig;