From 7eace6fe5d76f2df51031c78c7c1b632c7380d36 Mon Sep 17 00:00:00 2001
From: Andrey Toropchin <andy@andybook.local>
Date: Thu, 14 Jul 2016 09:32:52 +0500
Subject: [PATCH] added support for VKontakte (aka VK.com)

---
 Simplicity.xcodeproj/project.pbxproj |  4 +++
 Simplicity/VKontakte.swift           | 42 ++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 Simplicity/VKontakte.swift

diff --git a/Simplicity.xcodeproj/project.pbxproj b/Simplicity.xcodeproj/project.pbxproj
index a5cb028..f53a018 100644
--- a/Simplicity.xcodeproj/project.pbxproj
+++ b/Simplicity.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		A132748C1D374C81002ED68B /* VKontakte.swift in Sources */ = {isa = PBXBuildFile; fileRef = A132748B1D374C81002ED68B /* VKontakte.swift */; };
 		DF74EC341CE2A8BB008F16BF /* Simplicity.h in Headers */ = {isa = PBXBuildFile; fileRef = DF74EC331CE2A8BB008F16BF /* Simplicity.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DF74EC3F1CE2A943008F16BF /* LICENSE in Resources */ = {isa = PBXBuildFile; fileRef = DF74EC3E1CE2A943008F16BF /* LICENSE */; };
 		DF74EC411CE2AC2F008F16BF /* LoginProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = DF74EC401CE2AC2F008F16BF /* LoginProvider.swift */; };
@@ -22,6 +23,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		A132748B1D374C81002ED68B /* VKontakte.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VKontakte.swift; sourceTree = "<group>"; };
 		DF74EC301CE2A8BB008F16BF /* Simplicity.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Simplicity.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		DF74EC331CE2A8BB008F16BF /* Simplicity.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Simplicity.h; sourceTree = "<group>"; };
 		DF74EC351CE2A8BB008F16BF /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -86,6 +88,7 @@
 				DF74EC491CE2ACF0008F16BF /* Facebook.swift */,
 				DFB389851CECFBFC001DDCCE /* Google.swift */,
 				DF8674F81D1A0351005C636A /* Instagram.swift */,
+				A132748B1D374C81002ED68B /* VKontakte.swift */,
 			);
 			name = LoginProviders;
 			sourceTree = "<group>";
@@ -194,6 +197,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				DF74EC411CE2AC2F008F16BF /* LoginProvider.swift in Sources */,
+				A132748C1D374C81002ED68B /* VKontakte.swift in Sources */,
 				DFB389861CECFBFC001DDCCE /* Google.swift in Sources */,
 				DFB389881CED3667001DDCCE /* OAuth2.swift in Sources */,
 				DF74EC451CE2AC54008F16BF /* Helpers.swift in Sources */,
diff --git a/Simplicity/VKontakte.swift b/Simplicity/VKontakte.swift
new file mode 100644
index 0000000..f0d393c
--- /dev/null
+++ b/Simplicity/VKontakte.swift
@@ -0,0 +1,42 @@
+//
+//  VKontakte.swift
+//  Simplicity
+//
+//  Created by Andrey Toropchin on 14.07.16.
+//  Copyright © 2016 Stormpath. All rights reserved.
+//
+
+/**
+ Class implementing VKontakte (VK.com) implicit grant flow.
+
+ ## Using Instagram in your app.
+
+ To get started, you first need to [create an application](https://vk.com/dev/) with VKontakte. 
+ After registering your app, go into your client settings page.
+ Set App Bundle ID for iOS to your App Bundle in Xcode -> Target -> Bundle Identifier (e.g. com.developer.applicationName)
+
+ Finally, open up your App's Xcode project and go to the project's
+ info tab. Under "URL Types", add a new entry, and in the URL schemes form
+ field, type in `vk[CLIENT_ID_HERE]`. Then, you can initiate the login
+ screen by calling:
+ ```
+ Simplicity.login(VKontakte()) { (accessToken, error) in
+ // Insert code here
+ }
+ ```
+ */
+
+public class VKontakte: OAuth2 {
+
+    public init() {
+        guard let urlScheme = Helpers.registeredURLSchemes(filter: {$0.hasPrefix("vk")}).first,
+            range = urlScheme.rangeOfString("\\d+", options: .RegularExpressionSearch) else {
+                preconditionFailure("You must configure your VK URL Scheme to use VK login.")
+        }
+        let clientId = urlScheme.substringWithRange(range)
+        let authorizationEndpoint = NSURL(string: "https://oauth.vk.com/authorize")!
+        let redirectEndpoint = NSURL(string: urlScheme + "://authorize")!
+
+        super.init(clientId: clientId, authorizationEndpoint: authorizationEndpoint, redirectEndpoint: redirectEndpoint, grantType: .Implicit)
+    }
+}