add support for hangup and sip:refer

lib/tasks/cognigy/index.js

@@ -104,7 +104,9 @@ class Cognigy extends Task {
       this.client.on('error', this._onBotError.bind(this, cs, ep));
       this.client.on('finalPing', this._onBotFinalPing.bind(this, cs, ep));
       await this.client.connect();
-      this.client.sendMessage('welcome message', {...this.data, ...cs.callInfo});
+      // todo make welcome message configurable (enable or disable it when
+      // we start a conversation (should be enabled by defaul))
+      this.client.sendMessage('Welcome Message', {...this.data, ...cs.callInfo});
 
       await this.awaitTaskDone();
     } catch (err) {
@@ -157,6 +159,23 @@ class Cognigy extends Task {
     return say;
   }
 
+  _makeHangupTask(reason) {
+    const hangup = makeTask(this.logger, {hangup: {
+      headers: {
+        'X-REASON': reason
+      }
+    }}, this);
+    return hangup;
+  }
+
+  _makeReferTask(number) {
+    const refer = makeTask(this.logger, {'sip:refer': {
+      referTo: number,
+      referredBy: 'cognigy'
+    }});
+    return refer;
+  }
+
   async _onBotError(cs, ep, evt) {
     this.logger.info({evt}, 'Cognigy:_onBotError');
     this.performAction({cognigyResult: 'botError', message: evt.message });
@@ -165,10 +184,10 @@ class Cognigy extends Task {
   }
 
   async _onBotFinalPing(cs, ep) {
-    this.logger.info({}, "TEST FROM ALEX")
+    this.logger.info({}, 'TEST FROM ALEX');
     this.logger.info({prompts: this.prompts}, 'Cognigy:_onBotFinalPing');
     if (this.prompts.length) {
-      const text = "test test test test test".concat(this.prompts.join('.'));
+      const text = 'test test test test test'.concat(this.prompts.join('.'));
       if (text && !this.killed) {
         this.gatherTask = this._makeGatherTask({textPrompt: text});
         this.gatherTask.exec(cs, ep, this)
@@ -185,16 +204,44 @@ class Cognigy extends Task {
       this.performHook(cs, this.eventHook, {event: 'botMessage', message: evt})
         .then((redirected) => {
           if (redirected) {
-            this.logger.info('Cognigy_onTranscription: event handler for bot message redirected us to new webhook');
+            this.logger.info('Cognigy_onBotUtterance: event handler for bot message redirected us to new webhook');
             this.reportedFinalAction = true;
             this.performAction({cognigyResult: 'redirect'}, false);
           }
           return;
         })
         .catch(({err}) => {
-          this.logger.info({err}, 'Cognigy_onTranscription: error sending event hook');
+          this.logger.info({err}, 'Cognigy_onBotUtterance: error sending event hook');
         });
     }
+
+    if (evt && evt.data && evt.data.type) {
+      try {
+        switch (evt.data.type) {
+          case 'hangup':
+            await this._makeHangupTask(evt.data.reason);
+            this.performAction({cognigyResult: 'hangup Succeeded'});
+            this.reportedFinalAction = true;
+            this.notifyTaskDone();
+            return;
+          case 'refer':
+            await this._makeReferTask(evt.data.number);
+            this.performAction({cognigyResult: 'refer succeeded'});
+            this.reportedFinalAction = true;
+            this.notifyTaskDone();
+            return;
+          default:
+            break;
+        }
+      } catch (err) {
+        this.logger.info({err, evtData: evt.data}, 'encountered error exeuting task');
+        if (!this.hasReportedFinalAction) this.performAction({cognigyResult: 'error', err});
+        this.reportedFinalAction = true;
+        this.notifyTaskDone();
+      }
+
+
+    }
     const text = parseBotText(evt);
     if (evt.data) this.config.update(evt.data);
     if (text) this.prompts.push(text);
@@ -226,7 +273,7 @@ class Cognigy extends Task {
         this.client.sendMessage(utterance);
       }
       else {
-         // if the bot is not connected, should we maybe throw an error here?
+        // if the bot is not connected, should we maybe throw an error here?
         this.logger.info('Cognigy_onTranscription - not sending user utterance as bot is disconnected');
       }
     } catch (err) {