From 3ef18116857121b2c440956d329e00e9dff2506e Mon Sep 17 00:00:00 2001
From: Roman Pushkin <roman.pushkin@gmail.com>
Date: Thu, 16 Jun 2016 23:26:51 -0700
Subject: [PATCH] #50 Add user state response (#80)

---
 src/responses/user-state-response.js        | 30 +++++++++++++++++++++
 src/validations/supported-response-types.js |  2 +-
 test/responses/user-state-response-test.js  | 15 +++++++++++
 3 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 src/responses/user-state-response.js
 create mode 100644 test/responses/user-state-response-test.js

diff --git a/src/responses/user-state-response.js b/src/responses/user-state-response.js
new file mode 100644
index 00000000..1aeba2d3
--- /dev/null
+++ b/src/responses/user-state-response.js
@@ -0,0 +1,30 @@
+import Response from './response';
+import objectAssign from 'object-assign';
+
+/**
+ * User state response. Used to update user's state with new values.
+ * While updating unspecified keys remain untouched. Specified keys are
+ * updated.
+ *
+ * @author Roman Pushkin (roman.pushkin@gmail.com)
+ * @extends {Response}
+ * @date 2016-06-16
+ * @version 1.1
+ * @since 0.1.0
+ */
+export default class UserStateResponse extends Response {
+  /**
+   * Constructor.
+   *
+   * @type {Object}
+   * @example
+   * r = new UserStateResponse({phone: '555-111-22-33'});
+   * console.log(r.type); // prints "user-state"
+   * console.log(r.phone); // prints "555-111-22-33"
+   */
+  constructor(options) {
+    const opts = objectAssign({ type: 'user-state' }, options);
+    super(opts);
+    objectAssign(this, opts);
+  }
+}
diff --git a/src/validations/supported-response-types.js b/src/validations/supported-response-types.js
index c295b5b0..2bb613cd 100644
--- a/src/validations/supported-response-types.js
+++ b/src/validations/supported-response-types.js
@@ -14,4 +14,4 @@
  *   console.log('response with type "something" is not supported');
  * }
  */
-export default new Set(['text', 'redirect', 'options', 'error']);
+export default new Set(['text', 'redirect', 'options', 'error', 'user-state']);
diff --git a/test/responses/user-state-response-test.js b/test/responses/user-state-response-test.js
new file mode 100644
index 00000000..93b5990b
--- /dev/null
+++ b/test/responses/user-state-response-test.js
@@ -0,0 +1,15 @@
+/* eslint-disable no-new */
+import test from 'ava';
+import UserStateResponse from '../../src/responses/user-state-response';
+
+test('can be constructed with default parameters', t => {
+  new UserStateResponse({ foo: 1 });
+  t.pass();
+});
+
+test('should save properties and have \'user-state\' type', t => {
+  const r = new UserStateResponse({ foo: 1, bar: 2 });
+  t.is(r.foo, 1);
+  t.is(r.bar, 2);
+  t.is(r.type, 'user-state');
+});