Fix authentication

27 files changed, 267 insertions, 214 deletions

diff --git a/Juick/APIClient.h b/Juick/API.h
index d8317a4..fcf9fb1 100644
--- a/Juick/APIClient.h
+++ b/Juick/API.h
@@ -9,12 +9,13 @@
 #import "Message.h"
 #import "DeviceRegistration.h"
 
-@interface APIClient : NSObject<NSURLSessionDelegate, NSURLSessionTaskDelegate>
+@protocol JuickAuthorizationDelegate
+-(void) unauthorized;
+@end
 
-@property (nonatomic, strong) NSDateFormatter *dateFormatter;
-@property (nonatomic, strong) NSURLCredential *credential;
+@interface API : NSObject<NSURLSessionDelegate, NSURLSessionTaskDelegate>
 
-+(APIClient *) sharedClient;
+@property (nonatomic, strong) id<JuickAuthorizationDelegate> delegate;
 
 -(void) pullNextFromPath:(NSString *)path params:(NSDictionary *)params callback:(void(^)(NSArray<Message *>*, NSError *))callback;
 -(void) postMessage:(NSString *)text result:(void(^)(Message *, NSError *))callback;
@@ -22,11 +23,13 @@
 -(void) postPMToUser:(NSString *)uname text:(NSString *)text result:(void(^)(NSError *))callback;
 -(void) fetchChats:(void(^)(NSArray *, NSError *))callback;
 -(void) fetchChatWithUser:(NSString *)uname callback:(void(^)(NSArray *, NSError *))callback;
--(void) authenticate:(void(^)(User *, NSError *))callback;
+-(void) authenticateWithUser:(NSString *)username password:(NSString *)password callback:(void(^)(BOOL))completed;
+-(void) signout;
+-(void) me:(void(^)(User *, NSError *))callback;
 -(void) refreshDeviceRegistration:(DeviceRegistration *)registrationData callback:(void(^)(BOOL))callback;
 -(void) getUserByName:(NSString *) name callback:(void(^)(User *))callback;
--(BOOL) isAuthenticated;
 -(void) fetchImageWithURL:(NSURL *) url callback:(void(^)(NSData *))callback;
+@property (nonatomic, strong) User * currentUser;
 
 +(NSString *) messagesUrl;
 +(NSString *) threadUrl;
diff --git a/Juick/APIClient.m b/Juick/API.m
index e988edc..4f57dc6 100644
--- a/Juick/APIClient.m
+++ b/Juick/API.m
@@ -1,51 +1,69 @@
 //
-//  APIClient.m
+//  API.m
 //  Juick
 //
 //  Created by Vitaly Takmazov on 22/08/16.
 //  Copyright © 2016 com.juick. All rights reserved.
 //
-#import "APIClient.h"
 #import "Message.h"
 #import "Chat.h"
+#import "API.h"
 
-@interface APIClient ()
+@interface API ()
 @property(nonatomic, strong) NSOperationQueue *backgroundQueue;
 @property(nonatomic, strong) NSURL *baseURL;
 @property(nonatomic, strong) NSURLSession *urlSession;
-@property(nonatomic, strong) NSURLProtectionSpace *apiProtectionSpace;
--(void) get:(NSString *)path params:(NSDictionary *)params callback:(void(^)(NSDictionary *, NSError *))callback;
-@end
 
-@implementation APIClient
+-(void) get:(NSString *)path params:(NSDictionary *)params callback:(void(^)(NSDictionary *, NSError *))callback;
+-(NSString *) authorizationHeader;
 
-@synthesize credential = _credential;
+@end
 
-+(APIClient *) sharedClient {
-    static APIClient *sharedAPIClient = nil;
-    static dispatch_once_t onceToken;
-    dispatch_once(&onceToken, ^{
-        sharedAPIClient = [[self alloc] init];
-    });
-    return sharedAPIClient;
-}
+@implementation API
 
 -(id)init {
     if (self = [super init]) {
         NSString *baseURLString = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"base_url"];
         NSLog(@"Initializing with %@ base URL", baseURLString);
         self.baseURL = [NSURL URLWithString:baseURLString];
-        self.apiProtectionSpace = [[NSURLProtectionSpace alloc] initWithHost:self.baseURL.host port:0 protocol:NSURLProtectionSpaceHTTPS realm:@"Juick" authenticationMethod:NSURLAuthenticationMethodHTTPBasic];
         self.backgroundQueue = [NSOperationQueue new];
-        self.urlSession = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:self.backgroundQueue];
-        
-        self.dateFormatter = [[NSDateFormatter alloc] init];
-        self.dateFormatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
-        [self.dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
+        self.urlSession = [NSURLSession sharedSession];
     }
     return self;
 }
 
+- (NSString *) authorizationHeader {
+    NSString *token = [[NSUserDefaults standardUserDefaults] stringForKey:@"token"];
+    if (token) {
+        return [NSString stringWithFormat:@"Juick %@", token];
+    }
+    return nil;
+}
+
+- (void)authenticateWithUser:(NSString *)username password:(NSString *)password callback:(void(^)(BOOL))completed {
+    NSURL *url = [NSURL URLWithString:@"me"relativeToURL:self.baseURL];
+    NSString *basicAuthString = [NSString stringWithFormat:@"Basic %@", [[[NSString stringWithFormat:@"%@:%@", username, password] dataUsingEncoding:NSUTF8StringEncoding] base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed]];
+    
+    [self fetchDataWithURL:url data:nil boundary:nil authorizationHeader:basicAuthString callback:^(NSData *response, NSError *err) {
+        if (!err) {
+            NSError *jsonError;
+            NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:response options:0 error:&jsonError];
+            if (!jsonError) {
+                User *me = [User fromJSON:jsonData];
+                [[NSUserDefaults standardUserDefaults] setValue:me.token forKeyPath:@"token"];
+                self.currentUser = me;
+                completed(YES);
+            }
+        }
+        completed(NO);
+    }];
+}
+
+- (void)signout {
+    self.currentUser = nil;
+    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"token"];
+}
+
 -(void) pullNextFromPath:(NSString *)path  params:(NSDictionary *) params callback:(void(^)(NSArray<Message *> *, NSError *))callback {
     [self get:path params:params callback:^(NSDictionary *response, NSError *error) {
         NSMutableArray *messages = [NSMutableArray new];
@@ -58,6 +76,17 @@
     }];
 }
 
+- (void)me:(void (^)(User *, NSError *error))callback {
+    [self get:@"me" params:nil callback:^(NSDictionary *response, NSError *err) {
+        User *visitor;
+        if (!err) {
+            visitor = [User fromJSON:response];
+            self.currentUser = visitor;
+        }
+        callback(visitor, err);
+    }];
+}
+
 -(void) postMessage:(NSString *)text result:(void (^)(Message *, NSError *))callback {
     [self post:@"post" params:@{
         @"body": text
@@ -147,44 +176,16 @@
     NSError *error;
     NSDictionary *token = [registrationData toJSON];
     NSData *jsonData = [NSJSONSerialization dataWithJSONObject:@[token] options:kNilOptions error:&error];
-    [self fetchDataWithURL:notificationsUrl data:jsonData boundary:nil callback:^(NSData *response, NSError *err) {
+    [self fetchDataWithURL:notificationsUrl data:jsonData boundary:nil authorizationHeader:self.authorizationHeader callback:^(NSData *response, NSError *err) {
         callback(!err);
     }];
 }
 
-
-- (NSURLCredential *)credential {
-    NSDictionary *credentials = [[NSURLCredentialStorage sharedCredentialStorage] credentialsForProtectionSpace:self.apiProtectionSpace];
-    return [credentials.objectEnumerator nextObject];
-}
-
-- (void)setCredential:(NSURLCredential *)credential {
-    if (credential) {
-        [[NSURLCredentialStorage sharedCredentialStorage] removeCredential:_credential forProtectionSpace:self.apiProtectionSpace options:@{NSURLCredentialStorageRemoveSynchronizableCredentials:@YES}];
-        [[NSURLCredentialStorage sharedCredentialStorage] setCredential:credential forProtectionSpace:self.apiProtectionSpace];
-    } else {
-        [[NSURLCredentialStorage sharedCredentialStorage] removeCredential:_credential forProtectionSpace:self.apiProtectionSpace];
-    }
-}
-
-
--(BOOL) isAuthenticated {
-    NSString *password = self.credential.password;
-    return password != nil;
-}
-
-- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler {
-    if (challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodHTTPBasic) {
-        if (self.isAuthenticated) {
-            completionHandler(NSURLSessionAuthChallengeUseCredential, self.credential);
-            return;
-        }
-    }
-    completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
-}
-
--(void) fetchDataWithURL:(NSURL *) url data:(NSData *)postData boundary:(NSString *)boundary callback:(void(^)(NSData *, NSError *))callback {
+-(void) fetchDataWithURL:(NSURL *) url data:(NSData *)postData boundary:(NSString *)boundary authorizationHeader:(NSString *)header callback:(void(^)(NSData *, NSError *))callback {
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+    if (header) {
+        [request addValue:header forHTTPHeaderField:@"Authorization"];
+    }
     if (boundary) {
         request.HTTPMethod = @"POST";
         request.HTTPBody = postData;
@@ -250,7 +251,7 @@
 -(void) get:(NSString *) path params:(NSDictionary *)params callback:(void(^)(NSDictionary *, NSError *))callback {
     NSURL *url = [NSURL URLWithString:path relativeToURL:self.baseURL];
     NSURL *requestUrl = params ? [self url:url withParameters:params] : url;
-    [self fetchDataWithURL:requestUrl data:nil boundary:nil callback:^(NSData *data, NSError *err) {
+    [self fetchDataWithURL:requestUrl data:nil boundary:nil authorizationHeader:self.authorizationHeader callback:^(NSData *data, NSError *err) {
         if (err) {
             callback(nil, err);
         } else {
@@ -268,7 +269,8 @@
 -(void) post:(NSString *) path params:(NSDictionary *)params callback:(void(^)(NSDictionary *, NSError *))callback {
     NSURL *url = [NSURL URLWithString:path relativeToURL:self.baseURL];
     NSString *boundary = [NSString stringWithFormat:@"Boundary-%@", [[NSUUID UUID] UUIDString]];
-    [self fetchDataWithURL:url data:[self multipartData:params withBoundary:boundary] boundary:boundary callback:^(NSData *data, NSError *err) {
+    [self fetchDataWithURL:url data:[self multipartData:params withBoundary:boundary] boundary:boundary
+       authorizationHeader:self.authorizationHeader callback:^(NSData *data, NSError *err) {
         if (!err) {
             NSError *jsonError;
             NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:data options:0 error:&jsonError];
@@ -284,7 +286,7 @@
 }
 
 -(void) fetchImageWithURL:(NSURL *) url callback:(void(^)(NSData *))callback {
-    [self fetchDataWithURL:url data:nil boundary:nil callback:^(NSData *data, NSError *err) {
+    [self fetchDataWithURL:url data:nil boundary:nil authorizationHeader:self.authorizationHeader callback:^(NSData *data, NSError *err) {
         if (err) {
             callback(nil);
         } else {
diff --git a/Juick/AppDelegate.h b/Juick/AppDelegate.h
index 8b89131..6c277a9 100644
--- a/Juick/AppDelegate.h
+++ b/Juick/AppDelegate.h
@@ -9,10 +9,11 @@
 @import UIKit;
 #import "ThreadViewController.h"
 #import "User.h"
+#import "API.h"
 
 extern NSString * const UserUpdatedNotificationName;
 
-@interface AppDelegate : UIResponder <UIApplicationDelegate, UNUserNotificationCenterDelegate>
+@interface AppDelegate : UIResponder <UIApplicationDelegate, UNUserNotificationCenterDelegate, JuickAuthorizationDelegate>
 
 @property (strong, nonatomic) UIWindow *window;
 
@@ -30,6 +31,8 @@ extern NSString * const UserUpdatedNotificationName;
 @property (strong, nonatomic) NSString *pushedUname;
 @property (strong, nonatomic) NSNumber *pushedReplyId;
 
+@property (strong, nonatomic) API *api;
 
+@property (strong, nonatomic) NSDateFormatter *sharedDateFormatter;
 
 @end
diff --git a/Juick/AppDelegate.m b/Juick/AppDelegate.m
index d4c2304..47c18ef 100644
--- a/Juick/AppDelegate.m
+++ b/Juick/AppDelegate.m
@@ -6,11 +6,9 @@
 //  Copyright (c) 2013 com.juick. All rights reserved.
 //
 
-#import "AppDelegate.h"
 #import "MessagesViewController.h"
 #import "LoginViewController.h"
 
-#import "APIClient.h"
 #import "Message.h"
 #import "User.h"
 #import "DeviceRegistration.h"
@@ -28,6 +26,10 @@ NSString * const UserUpdatedNotificationName = @"UserUpdated";
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
+    self.api = [API new];
+    self.sharedDateFormatter = [NSDateFormatter new];
+    self.sharedDateFormatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
+    [self.sharedDateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
     [[UINavigationBar appearance] setTintColor:[UIColor colorNamed:@"Title"]];
     [[UINavigationBar appearance] setBarTintColor:[UIColor colorNamed:@"Background"]];
     [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor colorNamed:@"Muted"]}];
@@ -36,8 +38,9 @@ NSString * const UserUpdatedNotificationName = @"UserUpdated";
     [[UITabBar appearance] setTintColor:[UIColor colorNamed:@"Title"]];
     
     [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleDefault;
-    
+#if !TARGET_IPHONE_SIMULATOR
     [self registerForRemoteNotifications];
+#endif
     NSDictionary *userInfo = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey];
     if (userInfo) {
         [self parseNotificationPayload:userInfo];
@@ -63,7 +66,7 @@ NSString * const UserUpdatedNotificationName = @"UserUpdated";
         DeviceRegistration *registration = [DeviceRegistration new];
         registration.type = @"apns";
         registration.token = token;
-        [[APIClient sharedClient] refreshDeviceRegistration:registration callback:^(BOOL success) {
+        [self.api refreshDeviceRegistration:registration callback:^(BOOL success) {
             if (success) {
                 NSLog(@"successfully refreshed registration with %@", token);
             }
@@ -156,4 +159,8 @@ NSString * const UserUpdatedNotificationName = @"UserUpdated";
     [[self navigator] performSegueWithIdentifier:@"loginSegue" sender:vc];
 }
 
+- (void)unauthorized {
+    [self presentLoginView:self.window.rootViewController];
+}
+
 @end
diff --git a/Juick/Main.storyboard b/Juick/Main.storyboard
index 212e384..bfa1a3f 100644
--- a/Juick/Main.storyboard
+++ b/Juick/Main.storyboard
@@ -1,9 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15505" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Rbr-km-xhI">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Rbr-km-xhI">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15510"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
+        <capability name="Named colors" minToolsVersion="9.0"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
@@ -98,62 +99,63 @@
                         <rect key="frame" x="0.0" y="0.0" width="375" height="647"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <visualEffectView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="iqI-7F-B8z">
-                                <rect key="frame" x="6" y="185.5" width="363" height="332"/>
-                                <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="7kK-2B-ICG">
-                                    <rect key="frame" x="0.0" y="0.0" width="363" height="332"/>
-                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                                    <subviews>
-                                        <stackView opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" axis="vertical" spacing="24" translatesAutoresizingMaskIntoConstraints="NO" id="6Df-q8-WGI">
-                                            <rect key="frame" x="12" y="12" width="339" height="308"/>
-                                            <subviews>
-                                                <imageView userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="Splash.png" translatesAutoresizingMaskIntoConstraints="NO" id="8jW-MS-8v7">
-                                                    <rect key="frame" x="0.0" y="0.0" width="339" height="192"/>
-                                                </imageView>
-                                                <textField opaque="NO" contentMode="scaleToFill" verticalHuggingPriority="251" verticalCompressionResistancePriority="249" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" textAlignment="natural" adjustsFontForContentSizeCategory="YES" minimumFontSize="17" clearButtonMode="whileEditing" translatesAutoresizingMaskIntoConstraints="NO" id="BMn-5D-Cqa">
-                                                    <rect key="frame" x="0.0" y="216" width="339" height="34"/>
-                                                    <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
-                                                    <textInputTraits key="textInputTraits" returnKeyType="next" textContentType="username"/>
-                                                    <userDefinedRuntimeAttributes>
-                                                        <userDefinedRuntimeAttribute type="string" keyPath="placeholder" value="Username..."/>
-                                                    </userDefinedRuntimeAttributes>
-                                                </textField>
-                                                <textField opaque="NO" contentMode="scaleToFill" verticalHuggingPriority="251" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" textAlignment="natural" adjustsFontForContentSizeCategory="YES" minimumFontSize="17" clearButtonMode="whileEditing" translatesAutoresizingMaskIntoConstraints="NO" id="xGs-fu-6K0">
-                                                    <rect key="frame" x="0.0" y="274" width="339" height="34"/>
-                                                    <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
-                                                    <textInputTraits key="textInputTraits" returnKeyType="go" secureTextEntry="YES" textContentType="password"/>
-                                                    <userDefinedRuntimeAttributes>
-                                                        <userDefinedRuntimeAttribute type="string" keyPath="placeholder" value="Password..."/>
-                                                    </userDefinedRuntimeAttributes>
-                                                </textField>
-                                            </subviews>
-                                        </stackView>
-                                    </subviews>
-                                    <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                    <constraints>
-                                        <constraint firstItem="6Df-q8-WGI" firstAttribute="leading" secondItem="7kK-2B-ICG" secondAttribute="leading" constant="12" id="3oh-QW-8bt"/>
-                                        <constraint firstItem="6Df-q8-WGI" firstAttribute="top" secondItem="7kK-2B-ICG" secondAttribute="top" constant="12" id="Le8-iC-kpd"/>
-                                        <constraint firstAttribute="trailing" secondItem="6Df-q8-WGI" secondAttribute="trailing" constant="12" id="PZv-WX-f13"/>
-                                        <constraint firstAttribute="bottom" secondItem="6Df-q8-WGI" secondAttribute="bottom" constant="12" id="TyY-LG-msW"/>
-                                    </constraints>
-                                </view>
-                                <blurEffect style="light"/>
-                            </visualEffectView>
+                            <stackView opaque="NO" clipsSubviews="YES" contentMode="scaleToFill" axis="vertical" spacing="24" translatesAutoresizingMaskIntoConstraints="NO" id="axR-g5-sfd">
+                                <rect key="frame" x="12" y="68" width="351" height="313.5"/>
+                                <subviews>
+                                    <imageView userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="Splash.png" translatesAutoresizingMaskIntoConstraints="NO" id="ohW-YQ-JZL">
+                                        <rect key="frame" x="0.0" y="0.0" width="351" height="96"/>
+                                    </imageView>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Anonymous" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="PUg-SX-ZdC" userLabel="Current user">
+                                        <rect key="frame" x="0.0" y="120" width="351" height="20.5"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <color key="textColor" name="Title"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <textField opaque="NO" contentMode="scaleToFill" verticalHuggingPriority="251" verticalCompressionResistancePriority="249" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" textAlignment="natural" adjustsFontForContentSizeCategory="YES" minimumFontSize="17" clearButtonMode="whileEditing" translatesAutoresizingMaskIntoConstraints="NO" id="rhb-m4-21c">
+                                        <rect key="frame" x="0.0" y="164.5" width="351" height="34"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <textInputTraits key="textInputTraits" returnKeyType="next" textContentType="username"/>
+                                        <userDefinedRuntimeAttributes>
+                                            <userDefinedRuntimeAttribute type="string" keyPath="placeholder" value="Username..."/>
+                                        </userDefinedRuntimeAttributes>
+                                    </textField>
+                                    <textField opaque="NO" contentMode="scaleToFill" verticalHuggingPriority="251" contentHorizontalAlignment="left" contentVerticalAlignment="center" borderStyle="roundedRect" textAlignment="natural" adjustsFontForContentSizeCategory="YES" minimumFontSize="17" clearButtonMode="whileEditing" translatesAutoresizingMaskIntoConstraints="NO" id="T1M-x6-Ghc">
+                                        <rect key="frame" x="0.0" y="222.5" width="351" height="34"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <textInputTraits key="textInputTraits" returnKeyType="go" secureTextEntry="YES" textContentType="password"/>
+                                        <userDefinedRuntimeAttributes>
+                                            <userDefinedRuntimeAttribute type="string" keyPath="placeholder" value="Password..."/>
+                                        </userDefinedRuntimeAttributes>
+                                    </textField>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="gPQ-xI-b5J">
+                                        <rect key="frame" x="0.0" y="280.5" width="351" height="33"/>
+                                        <color key="backgroundColor" name="Chat"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                                        <state key="normal" title="Sign out">
+                                            <color key="titleColor" name="Title"/>
+                                        </state>
+                                        <connections>
+                                            <action selector="signoutPressed:" destination="4g9-hM-bzq" eventType="touchUpInside" id="x5D-vO-T3b"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                            </stackView>
                         </subviews>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                         <constraints>
-                            <constraint firstItem="fue-ZI-ech" firstAttribute="trailing" secondItem="iqI-7F-B8z" secondAttribute="trailing" constant="6" id="JYV-Ry-3R8"/>
-                            <constraint firstItem="iqI-7F-B8z" firstAttribute="leading" secondItem="fue-ZI-ech" secondAttribute="leading" constant="6" id="NBq-s7-VYY"/>
-                            <constraint firstItem="iqI-7F-B8z" firstAttribute="centerY" secondItem="fue-ZI-ech" secondAttribute="centerY" id="mzO-cF-iKK"/>
+                            <constraint firstItem="fue-ZI-ech" firstAttribute="trailing" secondItem="axR-g5-sfd" secondAttribute="trailing" constant="12" id="CP5-In-mwY"/>
+                            <constraint firstItem="axR-g5-sfd" firstAttribute="leading" secondItem="fue-ZI-ech" secondAttribute="leading" constant="12" id="YIV-CU-Vyy"/>
+                            <constraint firstItem="axR-g5-sfd" firstAttribute="top" secondItem="fue-ZI-ech" secondAttribute="top" constant="12" id="ZUC-uk-RH7"/>
                         </constraints>
                         <viewLayoutGuide key="safeArea" id="fue-ZI-ech"/>
                     </view>
                     <navigationItem key="navigationItem" id="QaM-45-gms"/>
                     <connections>
-                        <outlet property="bottomConstraint" destination="TyY-LG-msW" id="pwp-vP-jtH"/>
-                        <outlet property="passwordField" destination="xGs-fu-6K0" id="zY6-lx-9PQ"/>
-                        <outlet property="usernameField" destination="BMn-5D-Cqa" id="DQU-Fb-Q4e"/>
-                        <outlet property="visualEffectView" destination="iqI-7F-B8z" id="oBZ-aP-B0n"/>
+                        <outlet property="currentUser" destination="PUg-SX-ZdC" id="hEq-3R-Dxu"/>
+                        <outlet property="imageView" destination="ohW-YQ-JZL" id="dxm-uI-j6a"/>
+                        <outlet property="passwordField" destination="T1M-x6-Ghc" id="y4o-Hf-w22"/>
+                        <outlet property="signOutButton" destination="gPQ-xI-b5J" id="ahj-XW-fPQ"/>
+                        <outlet property="usernameField" destination="rhb-m4-21c" id="Q6M-FC-MVs"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="3yb-xh-Hei" userLabel="First Responder" sceneMemberID="firstResponder"/>
@@ -360,6 +362,11 @@
                 <tabBarController id="XnR-Hh-t65" customClass="JuickNavigationController" sceneMemberID="viewController">
                     <extendedEdge key="edgesForExtendedLayout"/>
                     <navigationItem key="navigationItem" id="Pgj-hT-yHb">
+                        <barButtonItem key="leftBarButtonItem" title="..." id="an5-75-hlO">
+                            <connections>
+                                <action selector="showLoginForm:" destination="XnR-Hh-t65" id="s3S-UY-fUi"/>
+                            </connections>
+                        </barButtonItem>
                         <barButtonItem key="rightBarButtonItem" image="ei-pencil" id="fvy-mZ-USk">
                             <connections>
                                 <segue destination="mKa-Ib-r2p" kind="modal" identifier="editorSegue" id="mG5-hj-MTY"/>
@@ -441,5 +448,11 @@
         <image name="ei-envelope" width="23" height="16"/>
         <image name="ei-pencil" width="23" height="22"/>
         <image name="ei-search" width="23" height="23"/>
+        <namedColor name="Chat">
+            <color red="0.97254901960784312" green="0.97254901960784312" blue="0.97254901960784312" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
+        <namedColor name="Title">
+            <color red="0.23529411764705882" green="0.46666666666666667" blue="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+        </namedColor>
     </resources>
 </document>
diff --git a/Juick/Model/Message.m b/Juick/Model/Message.m
index f5c2640..d39be54 100644
--- a/Juick/Model/Message.m
+++ b/Juick/Model/Message.m
@@ -7,7 +7,6 @@
 //
 
 #import "Message.h"
-#import "AppDelegate.h"
 
 @implementation Message
 
diff --git a/Juick/Model/User.h b/Juick/Model/User.h
index cbf4e46..344626e 100644
--- a/Juick/Model/User.h
+++ b/Juick/Model/User.h
@@ -12,6 +12,7 @@
 @property (nonatomic, strong) NSString *uname;
 @property (nonatomic, strong) NSString *uid;
 @property (nonatomic, strong) NSString *avatar;
+@property (nonatomic, strong) NSString *token;
 @property (nonatomic) NSInteger unreadCount;
 
 + (User *) fromJSON:(NSDictionary *)jsonData;
diff --git a/Juick/Model/User.m b/Juick/Model/User.m
index 94b77c4..a0c34f9 100644
--- a/Juick/Model/User.m
+++ b/Juick/Model/User.m
@@ -7,7 +7,6 @@
 //
 
 #import "User.h"
-#import "APIClient.h"
 
 @implementation User
 
@@ -16,6 +15,7 @@
     user.uid = jsonData[@"uid"];
     user.uname = jsonData[@"uname"];
     user.avatar = jsonData[@"avatar"];
+    user.token = jsonData[@"hash"];
     user.unreadCount = [jsonData[@"messagesCount"] integerValue];
     return user;
 }
diff --git a/Juick/Supporting Files/Juick-Prefix.pch b/Juick/Supporting Files/Juick-Prefix.pch
index 7278b52..957a052 100644
--- a/Juick/Supporting Files/Juick-Prefix.pch
+++ b/Juick/Supporting Files/Juick-Prefix.pch
@@ -14,9 +14,10 @@
     #import <UIKit/UIKit.h>
     #import <Foundation/Foundation.h>
     #import <SystemConfiguration/SystemConfiguration.h>
-    #import <MobileCoreServices/MobileCoreServices.h>
+    #import <CoreServices/CoreServices.h>
     #import <UserNotifications/UserNotifications.h>
 
     #import "UIImage+Utils.h"
     #import "UIView+Shimmer.h"
+    #import "AppDelegate.h"
 #endif
diff --git a/Juick/Supporting Files/main.m b/Juick/Supporting Files/main.m
index 67b222f..8e01106 100644
--- a/Juick/Supporting Files/main.m
+++ b/Juick/Supporting Files/main.m
@@ -8,8 +8,6 @@
 
 #import <UIKit/UIKit.h>
 
-#import "AppDelegate.h"
-
 int main(int argc, char * argv[])
 {
     @autoreleasepool {
diff --git a/Juick/ViewControllers/ChatViewController.m b/Juick/ViewControllers/ChatViewController.m
index 2612719..695d7ec 100644
--- a/Juick/ViewControllers/ChatViewController.m
+++ b/Juick/ViewControllers/ChatViewController.m
@@ -8,7 +8,6 @@
 
 #import "ChatViewController.h"
 #import "BubbleMessageCell.h"
-#import "APIClient.h"
 
 #import "MessageInputView.h"
 
@@ -29,7 +28,6 @@
     self.tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
     self.tableView.allowsSelection = NO;
     self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
-    self.me = [APIClient sharedClient].credential.user;
     [self reloadChat];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
     self.refreshControl = [UIRefreshControl new];
@@ -40,7 +38,7 @@
 -(void) reloadChat {
     self.messages = [NSMutableArray array];
     [self.tableView reloadData];
-    [[APIClient sharedClient] fetchChatWithUser:self.uname callback:^(NSArray *messages, NSError *err) {
+    [[AppDelegate shared].api fetchChatWithUser:self.uname callback:^(NSArray *messages, NSError *err) {
         if (err == nil) {
             [self.messages addObjectsFromArray:[[messages reverseObjectEnumerator] allObjects]];
             NSMutableArray *indexPaths = [NSMutableArray new];
@@ -107,7 +105,7 @@
 }
 
 -(void) textSent:(NSString *)text {
-    [[APIClient sharedClient] postPMToUser:self.uname text:text result:^(NSError *err) {
+    [[AppDelegate shared].api postPMToUser:self.uname text:text result:^(NSError *err) {
         if (!err) {
             NSLog(@"Success!");
             [self.accessoryView becomeFirstResponder];
diff --git a/Juick/ViewControllers/DialogsViewController.m b/Juick/ViewControllers/DialogsViewController.m
index 0b7f2ca..432cd53 100644
--- a/Juick/ViewControllers/DialogsViewController.m
+++ b/Juick/ViewControllers/DialogsViewController.m
@@ -9,8 +9,6 @@
 #import "DialogsViewController.h"
 #import "ChatViewController.h"
 #import "ConversationCell.h"
-#import "APIClient.h"
-#import "AppDelegate.h"
 
 @implementation DialogsViewController
 - (void)viewDidLoad {
@@ -31,7 +29,7 @@
 - (void) refreshData {
     self.chats = [NSMutableArray array];
     [self.tableView reloadData];
-    [[APIClient sharedClient] fetchChats:^(NSArray *groups, NSError *err) {
+    [[AppDelegate shared].api fetchChats:^(NSArray *groups, NSError *err) {
         if (err == nil) {
             [self.chats addObjectsFromArray:groups];
             NSMutableArray *indexPaths = [NSMutableArray new];
diff --git a/Juick/ViewControllers/DiscoverViewController.m b/Juick/ViewControllers/DiscoverViewController.m
index 7bf9f74..10185ef 100644
--- a/Juick/ViewControllers/DiscoverViewController.m
+++ b/Juick/ViewControllers/DiscoverViewController.m
@@ -7,7 +7,6 @@
 //
 
 #import "DiscoverViewController.h"
-#import "APIClient.h"
 
 @interface DiscoverViewController ()
 
@@ -17,7 +16,7 @@
 - (void)viewDidLoad {
     self.messagesDelegate = self;
     self.title = @"Discover";
-    self.path = [APIClient messagesUrl];
+    self.path = [API messagesUrl];
     [self setShouldScrollToUnreadOnRefresh:NO];
     [super viewDidLoad];
 }
diff --git a/Juick/ViewControllers/DiscussionsController.m b/Juick/ViewControllers/DiscussionsController.m
index 607ac26..47ee7f2 100644
--- a/Juick/ViewControllers/DiscussionsController.m
+++ b/Juick/ViewControllers/DiscussionsController.m
@@ -7,7 +7,6 @@
 //
 
 #import "DiscussionsController.h"
-#import "APIClient.h"
 
 @interface DiscussionsController ()
 
@@ -18,7 +17,7 @@
 - (void)viewDidLoad {
     self.messagesDelegate = self;
     self.title = @"Discussions";
-    self.path = [APIClient discussionsUrl];
+    self.path = [API discussionsUrl];
     [self setShouldScrollToUnreadOnRefresh:NO];
     [super viewDidLoad];
 }
@@ -26,7 +25,7 @@
 - (void)loadMore {
     Message *lastMsg = [self.messages lastObject];
     if (lastMsg != nil) {
-        NSDate *msgDate = [[APIClient sharedClient].dateFormatter dateFromString:lastMsg.timestamp];
+        NSDate *msgDate = [[AppDelegate shared].sharedDateFormatter dateFromString:lastMsg.timestamp];
         self.params = [@{@"to" : [NSString stringWithFormat:@"%.0f", [msgDate timeIntervalSince1970] * 1000]} mutableCopy];
         [self setShouldScrollToUnreadOnRefresh:NO];
         [self refreshData];
diff --git a/Juick/ViewControllers/FeedViewController.m b/Juick/ViewControllers/FeedViewController.m
index da1b914..c492f2e 100644
--- a/Juick/ViewControllers/FeedViewController.m
+++ b/Juick/ViewControllers/FeedViewController.m
@@ -10,8 +10,6 @@
 #import "ThreadViewController.h"
 #import "BlogViewController.h"
 #import "MessageCell.h"
-#import "APIClient.h"
-#import "AppDelegate.h"
 #import "LoginViewController.h"
 
 NSString * const UserNotAuthenticatedNotificationName = @"UserNotAuthenticated";
@@ -28,7 +26,7 @@ NSString * const UserNotAuthenticatedNotificationName = @"UserNotAuthenticated";
     [self refreshPath];
     [self setShouldScrollToUnreadOnRefresh:NO];
     [super viewDidLoad];
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(userDidSignedIn:) name:UserSignedInNotificationName object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(userDidSignedIn:) name:UserChangedNotificationName object:nil];
 }
 
 -(void)avatarClicked:(NSString *)uname {
@@ -46,17 +44,11 @@ NSString * const UserNotAuthenticatedNotificationName = @"UserNotAuthenticated";
     }
 }
 
-
-
-- (void)didReceiveChallenge {
-    
-}
-
 -(void) refreshPath {
-    if ([[APIClient sharedClient] isAuthenticated]) {
-        self.path = [APIClient feedUrl];
+    if ([[AppDelegate shared].api currentUser]) {
+        self.path = [API feedUrl];
     } else {
-        self.path = [APIClient messagesUrl];
+        self.path = [API messagesUrl];
         self.params = @{@"popular": @1};
     }
 }
diff --git a/Juick/ViewControllers/JuickNavigationController.h b/Juick/ViewControllers/JuickNavigationController.h
index b508466..974c177 100644
--- a/Juick/ViewControllers/JuickNavigationController.h
+++ b/Juick/ViewControllers/JuickNavigationController.h
@@ -11,7 +11,9 @@
 NS_ASSUME_NONNULL_BEGIN
 
 @interface JuickNavigationController : UITabBarController
-- (IBAction)newMessage:(id)sender;
+- (IBAction)showLoginForm:(id)sender;
+- (void) refreshStatus;
+@property (weak, nonatomic) IBOutlet UIBarButtonItem *leftButton;
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/Juick/ViewControllers/JuickNavigationController.m b/Juick/ViewControllers/JuickNavigationController.m
index 8673866..aaf3765 100644
--- a/Juick/ViewControllers/JuickNavigationController.m
+++ b/Juick/ViewControllers/JuickNavigationController.m
@@ -8,31 +8,54 @@
 
 #import "JuickNavigationController.h"
 
-#import "AppDelegate.h"
-#import "APIClient.h"
 #import "MessagesViewController.h"
 #import "ThreadViewController.h"
 #import "NewPostViewController.h"
 
 #import "Message.h"
+#import "LoginViewController.h"
 
 @interface JuickNavigationController ()
 
+@property(nonatomic, strong) UIButton *avatarButton;
 
 @end
 
 @implementation JuickNavigationController
 
+
+-(void) refreshStatus {
+    [[AppDelegate shared].api me:^(User *user, NSError *err) {
+        NSString *avatarUrl;
+        if (err || !user) {
+            avatarUrl = @"https://i.juick.com/av-96.png";
+        } else {
+            avatarUrl = user.avatar;
+        }
+        [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:avatarUrl] callback:^(NSData *data) {
+            self.avatarButton = [UIButton buttonWithType:UIButtonTypeCustom];
+            [self.avatarButton addTarget:self action:@selector(showLoginForm:) forControlEvents:UIControlEventTouchUpInside];
+            [self.avatarButton setImage:[UIImage imageWithImage:[UIImage imageWithData:data] fitInsideWidth:44 fitInsideHeight:44] forState:UIControlStateNormal];
+            self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:self.avatarButton];
+        }];
+    }];
+}
+
 - (void)viewDidLoad {
     [super viewDidLoad];
-    // Do any additional setup after loading the view.
+    [self refreshStatus];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(userDidSignedIn:) name:UserChangedNotificationName object:nil];
+}
+
+- (void)userDidSignedIn:(NSNotification *) notification {
+    [self refreshStatus];
 }
 
 #pragma mark - Navigation
 
 - (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {
     if ([identifier isEqualToString:@"editorSegue"]) {
-        if ([[APIClient sharedClient] isAuthenticated]) {
+        if ([[AppDelegate shared].api currentUser]) {
             return YES;
         } else {
             [[AppDelegate shared] presentLoginView:self];
@@ -71,7 +94,7 @@
     }
 }
 
-- (IBAction)newMessage:(id)sender {
-    [[AppDelegate shared] presentLoginView:self];
+- (IBAction)showLoginForm:(id)sender {
+    [self performSegueWithIdentifier:@"loginSegue" sender:self];
 }
 @end
diff --git a/Juick/ViewControllers/LoginViewController.h b/Juick/ViewControllers/LoginViewController.h
index e1a4900..451a99c 100644
--- a/Juick/ViewControllers/LoginViewController.h
+++ b/Juick/ViewControllers/LoginViewController.h
@@ -10,11 +10,14 @@
 
 #import "User.h"
 
-extern NSString * const UserSignedInNotificationName;
+extern NSString * const UserChangedNotificationName;
 
 @interface LoginViewController : UIViewController
+@property (weak, nonatomic) IBOutlet UILabel *currentUser;
 @property (weak, nonatomic) IBOutlet UITextField *usernameField;
 @property (weak, nonatomic) IBOutlet UITextField *passwordField;
-@property (weak, nonatomic) IBOutlet UIVisualEffectView *visualEffectView;
+@property (weak, nonatomic) IBOutlet UIButton *signOutButton;
+@property (weak, nonatomic) IBOutlet UIImageView *imageView;
+- (IBAction)signoutPressed:(id)sender;
 @property (strong, nonatomic) IBOutlet NSLayoutConstraint *bottomConstraint;
 @end
diff --git a/Juick/ViewControllers/LoginViewController.m b/Juick/ViewControllers/LoginViewController.m
index 55099eb..a0e9b97 100644
--- a/Juick/ViewControllers/LoginViewController.m
+++ b/Juick/ViewControllers/LoginViewController.m
@@ -8,33 +8,32 @@
 
 #import "LoginViewController.h"
 #import "User.h"
-#import "AppDelegate.h"
-#import "APIClient.h"
 
-NSString * const UserSignedInNotificationName = @"UserSignedIn";
+NSString * const UserChangedNotificationName = @"UserSignedIn";
 
 @interface LoginViewController()
 @property (nonatomic, assign) int paddingValue;
+-(void) refreshState;
 @end
 
 @implementation LoginViewController
 
 - (void) awakeFromNib {
     [super awakeFromNib];
-    self.title = @"Sign in";
     [self.view setBackgroundColor:[UIColor colorNamed:@"Background"]];
-    [self.visualEffectView.contentView setBackgroundColor:[UIColor colorNamed:@"Background"]];
     
     self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
                                                                                           target:self action:@selector(cancelSignIn)];
     self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave
                                                                                            target:self action:@selector(doneSignIn)];
-    self.usernameField.text = [APIClient sharedClient].credential.user;
-    self.passwordField.text = [APIClient sharedClient].credential.password;
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
 }
 
+- (void)viewWillAppear:(BOOL)animated {
+    [self refreshState];
+}
+
 -(void) keyboardDidShow:(NSNotification *)sender {
     CGRect keyboardRect = [sender.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
     self.bottomConstraint.constant = keyboardRect.size.height - self.view.safeAreaInsets.bottom + self.paddingValue;
@@ -47,32 +46,54 @@ NSString * const UserSignedInNotificationName = @"UserSignedIn";
 
 
 - (void) cancelSignIn {
-    CATransition* transition = [CATransition animation];
-    transition.duration = 0.3;
-    transition.type = kCATransitionFade;
-    transition.subtype = kCATransitionFromTop;
-    
-    [self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
-    [self.navigationController dismissViewControllerAnimated:NO completion:nil];
+    [self.navigationController dismissViewControllerAnimated:YES completion:nil];
 }
 
 - (void) doneSignIn {
-    [[APIClient sharedClient] setCredential:[NSURLCredential credentialWithUser:self.usernameField.text password:self.passwordField.text persistence:NSURLCredentialPersistenceSynchronizable]];
-    [[APIClient sharedClient] authenticate:^(User *user, NSError *error) {
-        if (user) {
-            [[NSNotificationCenter defaultCenter] postNotificationName:UserSignedInNotificationName object:user];
+    
+    [[NSURLCache sharedURLCache] removeAllCachedResponses];
+    [[AppDelegate shared].api authenticateWithUser:self.usernameField.text password:self.passwordField.text callback:^(BOOL success){
+        if (success) {
+            [[NSNotificationCenter defaultCenter] postNotificationName:UserChangedNotificationName object:nil];
             [[AppDelegate shared] registerForRemoteNotifications];
-            CATransition* transition = [CATransition animation];
-            transition.duration = 0.3;
-            transition.type = kCATransitionFade;
-            transition.subtype = kCATransitionFromTop;
-            
-            [self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
-            [self.navigationController dismissViewControllerAnimated:NO completion:nil];
-        } else {
-            [User throwUnableToLogin:self error:error];
-            [[APIClient sharedClient] setCredential:nil];
+            [self.navigationController dismissViewControllerAnimated:YES completion:nil];
         }
     }];
 }
+
+- (void)refreshState {
+    if ([AppDelegate shared].api.currentUser) {
+        self.title = @"Profile";
+        [self.usernameField setHidden:YES];
+        [self.passwordField setHidden:YES];
+        [self.currentUser setHidden:NO];
+        self.currentUser.text = [AppDelegate shared].api.currentUser.uname;
+        __weak UIImageView *weakAttach = self.imageView;
+        [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:[AppDelegate shared].api.currentUser.avatar] callback:^(NSData *data) {
+            [UIView transitionWithView:weakAttach
+                              duration:0.3
+                               options:UIViewAnimationOptionTransitionCrossDissolve
+                            animations:^{
+                                weakAttach.image = [UIImage imageWithData:data];
+                            }
+                            completion:nil];
+        }];
+        [self.signOutButton setHidden:NO];
+    } else {
+        self.title = @"Sign in";
+        self.imageView.image = [UIImage imageNamed:@"Splash"];
+        [self.usernameField setHidden:NO];
+        [self.passwordField setHidden:NO];
+        [self.currentUser setHidden:YES];
+        [self.signOutButton setHidden:YES];
+    }
+}
+
+- (IBAction)signoutPressed:(id)sender {
+    [[AppDelegate shared].api signout];
+    [[NSURLCache sharedURLCache] removeAllCachedResponses];
+    [self.navigationController dismissViewControllerAnimated:YES completion:^{
+        [[NSNotificationCenter defaultCenter] postNotificationName:UserChangedNotificationName object:nil];
+    }];
+}
 @end
diff --git a/Juick/ViewControllers/MessagesViewController.m b/Juick/ViewControllers/MessagesViewController.m
index 25a2ca5..f61d8b4 100644
--- a/Juick/ViewControllers/MessagesViewController.m
+++ b/Juick/ViewControllers/MessagesViewController.m
@@ -9,8 +9,6 @@
 #import "MessagesViewController.h"
 #import "MessageCell.h"
 
-#import "AppDelegate.h"
-#import "APIClient.h"
 #import "Message.h"
 
 #import "NewPostViewController.h"
@@ -35,20 +33,20 @@ NSString* const messageCellIdentifier = @"messageCell";
         if (self.messages.count == 0) {
             [self.tableView reloadData];
         }
-        [[APIClient sharedClient] pullNextFromPath:self.path params:self.params callback:^(NSArray *next, NSError *err) {
+        [[AppDelegate shared].api pullNextFromPath:self.path params:self.params callback:^(NSArray *next, NSError *err) {
             if (err) {
                 [User throwUnableToLogin:self error:err];
                 return;
             }
             NSArray *newMsgs = next;
             if ([self isAtTop:self.params]) {
-                if (![self.path isEqualToString:[APIClient threadUrl]]) {
+                if (![self.path isEqualToString:[API threadUrl]]) {
                     [self.messages removeAllObjects];
                     [self.tableView reloadData];
                 }
             }
             NSUInteger oldCount = [self.messages count];
-            if ([self.path isEqualToString:[APIClient threadUrl]]) {
+            if ([self.path isEqualToString:[API threadUrl]]) {
                 NSUInteger lastRid = [((Message *)[self.messages lastObject]).rid unsignedIntegerValue] + 1;
                 NSUInteger count = [next count];
                 if (oldCount > 0) {
diff --git a/Juick/ViewControllers/NewPostViewController.m b/Juick/ViewControllers/NewPostViewController.m
index e4b5ac7..344e7b9 100644
--- a/Juick/ViewControllers/NewPostViewController.m
+++ b/Juick/ViewControllers/NewPostViewController.m
@@ -9,8 +9,6 @@
 #import "NewPostViewController.h"
 #import "MessagesViewController.h"
 #import "QuoteView.h"
-#import "APIClient.h"
-#import "AppDelegate.h"
 
 NSString * const NewMessageNotificationName = @"NewMessage";
 NSString * const ReplyPostedNotificationName = @"ReplyPosted";
@@ -47,8 +45,8 @@ NSString * const ReplyPostedNotificationName = @"ReplyPosted";
 - (IBAction)sendAction:(id)sender {
     self.navigationItem.rightBarButtonItem.enabled = NO;
     if (_replyTo == nil) {
-        self.navigationItem.rightBarButtonItem.enabled = YES;
-        [[APIClient sharedClient] postMessage:self.textView.text result:^(Message *msg, NSError *err) {
+        [[AppDelegate shared].api postMessage:self.textView.text result:^(Message *msg, NSError *err) {
+            self.navigationItem.rightBarButtonItem.enabled = YES;
             if (!err) {
                 [self dismissViewControllerAnimated:YES completion:^{
                     [[NSNotificationCenter defaultCenter] postNotificationName:NewMessageNotificationName object:msg];
@@ -60,7 +58,7 @@ NSString * const ReplyPostedNotificationName = @"ReplyPosted";
         }];
     } else {
         self.navigationItem.rightBarButtonItem.enabled = NO;
-        [[APIClient sharedClient] postReplyToThread:_replyTo.mid inReplyTo:_replyTo.rid text:self.textView.text result:^(Message *msg, NSError *err) {
+        [[AppDelegate shared].api postReplyToThread:_replyTo.mid inReplyTo:_replyTo.rid text:self.textView.text result:^(Message *msg, NSError *err) {
             if (!err) {
                 [self dismissViewControllerAnimated:YES completion:^{
                     [[NSNotificationCenter defaultCenter] postNotificationName:ReplyPostedNotificationName object:msg];
diff --git a/Juick/ViewControllers/ThreadViewController.m b/Juick/ViewControllers/ThreadViewController.m
index c345822..8ee7623 100644
--- a/Juick/ViewControllers/ThreadViewController.m
+++ b/Juick/ViewControllers/ThreadViewController.m
@@ -9,14 +9,12 @@
 #import "ThreadViewController.h"
 #import "NewPostViewController.h"
 #import "MessageCell.h"
-#import "APIClient.h"
-#import "AppDelegate.h"
 
 @implementation ThreadViewController
 
 
 -(void) viewDidLoad {
-    [self setPath:[APIClient threadUrl]];
+    [self setPath:[API threadUrl]];
     [super viewDidLoad];
     self.messagesDelegate = self;
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(replyPosted:) name:ReplyPostedNotificationName object:nil];
@@ -30,10 +28,10 @@
 
 - (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {
     if ([identifier isEqualToString:@"editorSegue"]) {
-        if ([[APIClient sharedClient] isAuthenticated]) {
+        if ([[NSUserDefaults standardUserDefaults] stringForKey:@"token"]) {
             return YES;
         } else {
-            [[AppDelegate shared] presentLoginView:self];
+            [[AppDelegate shared] unauthorized];
             return NO;
         }
     }
diff --git a/Juick/Views/BubbleMessageCell.m b/Juick/Views/BubbleMessageCell.m
index 65d3c0c..a5131e6 100644
--- a/Juick/Views/BubbleMessageCell.m
+++ b/Juick/Views/BubbleMessageCell.m
@@ -7,7 +7,6 @@
 //
 
 #import "BubbleMessageCell.h"
-#import "APIClient.h"
 
 @implementation BubbleMessageCell
 
@@ -31,7 +30,7 @@
     self.message.text = message.text;
     self.unreadMarker.text = @"";
     __weak UIImageView *weakAvatar = self.avatarView;
-    [[APIClient sharedClient] fetchImageWithURL:[NSURL URLWithString:message.user.avatar] callback:^(NSData *data) {
+    [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:message.user.avatar] callback:^(NSData *data) {
         [UIView transitionWithView:weakAvatar
                           duration:0.3
                            options:UIViewAnimationOptionTransitionCrossDissolve
diff --git a/Juick/Views/ContentLoadingCell.xib b/Juick/Views/ContentLoadingCell.xib
index f7ca251..21c121b 100644
--- a/Juick/Views/ContentLoadingCell.xib
+++ b/Juick/Views/ContentLoadingCell.xib
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14868" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14824"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
         <capability name="Named colors" minToolsVersion="9.0"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -92,7 +92,7 @@
             <color red="0.97254901960784312" green="0.97254901960784312" blue="0.97254901960784312" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </namedColor>
         <namedColor name="Title">
-            <color red="0.0" green="0.40000000000000002" blue="0.59999999999999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+            <color red="0.23529411764705882" green="0.46666666666666667" blue="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </namedColor>
     </resources>
 </document>
diff --git a/Juick/Views/ConversationCell.m b/Juick/Views/ConversationCell.m
index dd17963..4c1e71c 100644
--- a/Juick/Views/ConversationCell.m
+++ b/Juick/Views/ConversationCell.m
@@ -7,7 +7,6 @@
 //
 
 #import "ConversationCell.h"
-#import "APIClient.h"
 
 @implementation ConversationCell
 
@@ -17,7 +16,7 @@
     self.lastMessage.text = chat.lastMessageText;
     self.unreadMarker.hidden = true;
     __weak UIImageView *weakAvatar = self.avatar;
-    [[APIClient sharedClient] fetchImageWithURL:[NSURL URLWithString:chat.avatar] callback:^(NSData *data) {
+    [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:chat.avatar] callback:^(NSData *data) {
         [UIView transitionWithView:weakAvatar
                           duration:0.3
                            options:UIViewAnimationOptionTransitionCrossDissolve
diff --git a/Juick/Views/MessageCell.m b/Juick/Views/MessageCell.m
index a64b7c3..ad1a3a3 100644
--- a/Juick/Views/MessageCell.m
+++ b/Juick/Views/MessageCell.m
@@ -7,7 +7,6 @@
 //
 
 #import "MessageCell.h"
-#import "APIClient.h"
 #import "Entity.h"
 
 #import "NSDate+TimeAgo.h"
@@ -50,7 +49,7 @@ const NSString *unreadMarker = @"●";
 - (void) configureWithMessage:(Message *)msg {
     self.avatar.image = nil;
     __weak UIImageView *weakAvatar = self.avatar;
-    [[APIClient sharedClient] fetchImageWithURL:[NSURL URLWithString:msg.user.avatar] callback:^(NSData *data) {
+    [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:msg.user.avatar] callback:^(NSData *data) {
         [UIView transitionWithView:weakAvatar
                           duration:0.3
                            options:UIViewAnimationOptionTransitionCrossDissolve
@@ -67,7 +66,7 @@ const NSString *unreadMarker = @"●";
         self.attachmentHeight.constant = imageHeight;
         self.attachmentWidth.constant = imageWidth;
         __weak UIImageView *weakAttach = self.attach;
-        [[APIClient sharedClient] fetchImageWithURL:[NSURL URLWithString:msg.attachment.small.url] callback:^(NSData *data) {
+        [[AppDelegate shared].api fetchImageWithURL:[NSURL URLWithString:msg.attachment.small.url] callback:^(NSData *data) {
             [UIView transitionWithView:weakAttach
                               duration:0.3
                                options:UIViewAnimationOptionTransitionCrossDissolve
@@ -82,7 +81,7 @@ const NSString *unreadMarker = @"●";
     }
     self.title.text = msg.user.uname;
     
-    self.timestamp.text = [[[APIClient sharedClient].dateFormatter dateFromString:msg.timestamp] timeAgo];
+    self.timestamp.text = [[[AppDelegate shared].sharedDateFormatter dateFromString:msg.timestamp] timeAgo];
     NSUInteger count = [msg.repliesCount unsignedIntegerValue];
     if (count > 0) {
         if ([msg.repliesBy length] > 0) {
diff --git a/Juick/Views/MessageInputView.xib b/Juick/Views/MessageInputView.xib
index 876be37..e13beca 100644
--- a/Juick/Views/MessageInputView.xib
+++ b/Juick/Views/MessageInputView.xib
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14868" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14824"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
         <capability name="Named colors" minToolsVersion="9.0"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -75,7 +75,7 @@
             <color red="0.13333333333333333" green="0.13333333333333333" blue="0.13333333333333333" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </namedColor>
         <namedColor name="Title">
-            <color red="0.0" green="0.40000000000000002" blue="0.59999999999999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+            <color red="0.23529411764705882" green="0.46666666666666667" blue="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </namedColor>
     </resources>
 </document>