added action goto

Constant.js

@@ -8,4 +8,5 @@ module.exports = {
   SET_DATA: "SET_DATA",
   SUB_FLOW: "SUB_FLOW",
   SEND_MAIL: "SEND_MAIL",
+  GO_TO: "GO_TO"
 };

actions/Goto.js

@@ -0,0 +1,26 @@
+const { ComponentDialog, WaterfallDialog } = require('botbuilder-dialogs');
+const { GO_TO } = require('../Constant');
+
+const GOTOACTION_WATERFALL = 'GOTOACTION_WATERFALL';
+
+class GotoAction extends ComponentDialog {
+  constructor(dialog) {
+    super(GO_TO);
+    this.dialog = dialog;
+    this.addDialog(
+      new WaterfallDialog(GOTOACTION_WATERFALL, [
+        this.goto.bind(this),
+      ])
+    );
+    this.initialDialogId = GOTOACTION_WATERFALL;
+  }
+
+  async goto(step) {
+    const { gotoId } = step.step._info.options;
+    return await step.endDialog({ actionId: gotoId });
+  }
+}
+
+module.exports = {
+  GotoAction,
+};

actions/Main.js

@@ -13,6 +13,7 @@ const {
   SUB_FLOW,
   CHECK_VARIABLE,
   SEND_MAIL,
+  GO_TO,
 } = require('../Constant');
 
 const { getFlowByContactId } = require('../services/proxy');
@@ -28,6 +29,7 @@ const { HttpRequest } = require('./HTTPRequest');
 const { SubFlow } = require('./SubFlow');
 const { CheckVariable } = require('./CheckVariable');
 const { SendMail } = require('./SendMail');
+const { GotoAction } = require('./Goto');
 
 const CHAT = 'CHAT';
 
@@ -48,6 +50,7 @@ class MainDialog extends ComponentDialog {
     this.addDialog(new SubFlow(this));
     this.addDialog(new CheckVariable(this));
     this.addDialog(new SendMail(this));
+    this.addDialog(new GotoAction(this))
 
     this.addDialog(
       new WaterfallDialog('Main_Water_Fall', [this.ReadFlow.bind(this)])
@@ -186,12 +189,13 @@ class MainDialog extends ComponentDialog {
     const { action } = step._info.options;
 
     const actions = {
-      message: SEND_TEXT,
+      'message': SEND_TEXT,
       'prompt-and-collect': PROMPTING,
       'http-request': HTTP_REQUEST,
       'sub-flow': SUB_FLOW,
       'check-variables': CHECK_VARIABLE,
       'send-mail': SEND_MAIL,
+      'goto"': GO_TO
     };
 
     if (!actions[action]) {