Handle Menus and Store / Recall recordings (#2)

* Update calls for menu parsing in paw

* Add twilio and bodyparser dependencies

* Integrate menu routes

* Add redirects to all menu selections.

* Add pause to menu message

* Update paw to handle all recordings cases

* Add rec menu handler, recordings dummy handler

* Add redis related configs

* Add redis node module

* Add missing comma to config

* Remove dangling comma from config

* Update paw to validate input

* Add post validation dependencies

* Update yarn lock

* Store recordings in redis

* Say post id in spanish

* Use the word for the pound sign

* Use a timestamp shifted by 2 and truncated to 10

1 files changed, 96 insertions, 0 deletions

diff --git a/lib/controllers/main_menu.js b/lib/controllers/main_menu.js
new file mode 100644
index 0000000..461cff8
--- /dev/null
+++ b/lib/controllers/main_menu.js
@@ -0,0 +1,96 @@
+'use strict';
+
+const Twilio = require('twilio');
+
+const internals = {};
+
+internals.kMenuTimeout = 10; // timeout in seconds
+internals.kMenuDigits = 1; // number of digits in the menu
+internals.kContentType = 'application/xml'; // The content type used to respond
+internals.kMenuLanguage = 'es-mx'; // the language to use
+internals.kTimeoutMessage = 'Oh... está bien. Adios!';
+internals.kMainMenuRoute = '/menus/main';
+internals.kRecordingMenuRoute = '/menus/recording';
+internals.kRandomMessageRoute = '/recordings/0';
+internals.kLeaveMessageRoute = '/recordings';
+internals.kMenuMessage = 'Para dejar un mensaje, presiona 1. ' +
+                         'Para escuchar un mensaje al azar, presiona 2. ' +
+                         'Para escuchar un mensaje específico, presioan 3.'; // the message that will be shown
+internals.kMenuInvalidResponseMessage = 'No entendí... Volviendo al menu principal.'; // invalid selection message
+internals.kMenuOptions = {
+  leaveMessage: 1,
+  listenToRandomMessage: 2,
+  listenToSpecificMessage: 3
+}; // the menu options
+
+/**
+ * Handles the HTTP requests for the main menu
+ *
+ * @class MainMenuController
+ */
+module.exports = internals.MainMenuController = class MainMenuController {
+
+  /**
+   * Serves the menu
+   *
+   * @function serveMenu
+   * @memberof MainMenuController
+   * @instance
+   * @return {generator} a koa compatible handler generator function
+   */
+  serveMenu() {
+
+    return function * () {
+
+      const response = new Twilio.TwimlResponse();
+
+      // the action will default to post in the same URL, so no change
+      // required there.
+      response.gather({
+        timeout: internals.kMenuTimeout,
+        numDigits: internals.kMenuDigits
+      }, function nestedHandler() {
+
+        this.say(internals.kMenuMessage, { language: internals.kMenuLanguage });
+      }).say(internals.kTimeoutMessage, { language: internals.kMenuLanguage });
+
+      this.type = internals.kContentType;
+      this.body = response.toString();
+    };
+  }
+
+  /**
+   * Parses the selected main menu response
+   *
+   * @function parseMenuSelection
+   * @memberof MainMenuController
+   * @instance
+   * @return {generator} a koa compatible handler generator function
+   */
+  parseMenuSelection() {
+
+    return function * () {
+
+      const menuSelection = parseInt(this.request.body.Digits);
+
+      const response = new Twilio.TwimlResponse();
+
+      if (menuSelection === internals.kMenuOptions.leaveMessage) {
+        response.redirect(internals.kLeaveMessageRoute, { method: 'GET' });
+      }
+      else if (menuSelection === internals.kMenuOptions.listenToRandomMessage) {
+        response.redirect(internals.kRandomMessageRoute, { method: 'GET' });
+      }
+      else if (menuSelection === internals.kMenuOptions.listenToSpecificMessage) {
+        response.redirect(internals.kRecordingMenuRoute, { method: 'GET' });
+      }
+      else {
+        response.say(internals.kMenuInvalidResponseMessage, { language: internals.kMenuLanguage })
+            .redirect(internals.kMainMenuRoute, { method: 'GET' });
+      }
+
+      this.type = internals.kContentType;
+      this.body = response.toString();
+    };
+  }
+};