feat(Auth): Implementation of getCurrentUser api (#455)

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/AWSCognitoAuthPlugin.swift

@@ -10,8 +10,9 @@ import AWSMobileClient
 
 /// Auth plugin that uses AWS Cognito UserPool and IdentityPool.
 ///
-/// The implicitly unwrapped optionals in this class are assigned in the `configure` method in `AWSCognitoAuthPlugin+Configure`
-/// extension. Make sure to call `Amplify.configure` after adding the plugin to `Amplify`.
+/// The implicitly unwrapped optionals in this class are assigned in the `configure` method in
+/// `AWSCognitoAuthPlugin+Configure` extension. Make sure to call `Amplify.configure` after adding the
+/// plugin to `Amplify`.
 final public class AWSCognitoAuthPlugin: AuthCategoryPlugin {
 
     /// A queue that regulates the execution of operations.

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/ClientBehavior/AWSCognitoAuthPlugin+ClientBehavior.swift

@@ -161,8 +161,4 @@ extension AWSCognitoAuthPlugin {
             queue.addOperation(operation)
             return operation
     }
-
-    public func getCurrentUser() -> AuthUser? {
-        return nil
-    }
 }

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/ClientBehavior/AWSCognitoAuthPlugin+UserBehavior.swift

@@ -90,4 +90,8 @@ extension AWSCognitoAuthPlugin {
         queue.addOperation(operation)
         return operation
     }
+
+    public func getCurrentUser() -> AuthUser? {
+        return authenticationProvider.getCurrentUser()
+    }
 }

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Dependency/AuthenticationProviderAdapter.swift

@@ -16,13 +16,14 @@ class AuthenticationProviderAdapter: AuthenticationProviderBehavior {
         self.awsMobileClient = awsMobileClient
     }
 
-    func signInUsername() -> Result<String, AuthError> {
+    func getCurrentUser() -> AuthUser? {
 
-        if let username = awsMobileClient.username() {
-            return .success(username)
+        guard let username = awsMobileClient.getUsername() else {
+            return nil
         }
-        // TODO: Fix the error here
-        return .failure(AuthError.unknown(""))
-
+        guard let sub = awsMobileClient.getUserSub() else {
+            return nil
+        }
+        return  AWSAuthUser(username: username, userId: sub)
     }
 }

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Dependency/AuthenticationProviderBehavior.swift

@@ -31,7 +31,7 @@ protocol AuthenticationProviderBehavior {
     func signOut(request: AuthSignOutRequest,
                  completionHandler: @escaping (Result<Void, AuthError>) -> Void)
 
-    func signInUsername() -> Result<String, AuthError>
+    func getCurrentUser() -> AuthUser?
 
     func resetPassword(request: AuthResetPasswordRequest,
                        completionHandler: @escaping (Result<AuthResetPasswordResult, AuthError>) -> Void)

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Models/AWSAuthUser.swift

@@ -9,8 +9,15 @@ import Amplify
 
 public struct AWSAuthUser: AuthUser {
 
+    /// The username for the logged in user
+    ///
+    /// Value maps to the username of a user in AWS Cognito User Pool. This value is set by AWS Cognito and not by the
+    /// user and does not always map with the username used to signIn.
     public var username: String
 
+    /// User Id for the logged in user
+    ///
+    /// UserId value maps to the sub value of a user in AWS Cognito User Pool. This value will be unique for a user.
     public var userId: String
 
 }

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Service/AWSMobileClient/AWSMobileClientAdapter.swift

@@ -107,10 +107,14 @@ class AWSMobileClientAdapter: AWSMobileClientBehavior {
         awsMobileClient.signOut()
     }
 
-    func username() -> String? {
+    func getUsername() -> String? {
         return awsMobileClient.username
     }
 
+    func getUserSub() -> String? {
+        return awsMobileClient.userSub
+    }
+
     func verifyUserAttribute(attributeName: String,
                              completionHandler: @escaping ((UserCodeDeliveryDetails?, Error?) -> Void)) {
         awsMobileClient.verifyUserAttribute(attributeName: attributeName,

AmplifyPlugins/Auth/AWSCognitoAuthPlugin/Service/AWSMobileClient/AWSMobileClientBehavior.swift

@@ -52,7 +52,9 @@ protocol AWSMobileClientBehavior {
 
     func signOutLocally()
 
-    func username() -> String?
+    func getUsername() -> String?
+
+    func getUserSub() -> String?
 
     func verifyUserAttribute(attributeName: String,
                              completionHandler: @escaping ((UserCodeDeliveryDetails?, Error?) -> Void))

Podfile.lock

@@ -1,14 +1,14 @@
 PODS:
-  - AWSAuthCore (2.13.3):
-    - AWSCore (= 2.13.3)
-  - AWSCognitoIdentityProvider (2.13.3):
+  - AWSAuthCore (2.13.4):
+    - AWSCore (= 2.13.4)
+  - AWSCognitoIdentityProvider (2.13.4):
     - AWSCognitoIdentityProviderASF (= 1.0.1)
-    - AWSCore (= 2.13.3)
+    - AWSCore (= 2.13.4)
   - AWSCognitoIdentityProviderASF (1.0.1)
-  - AWSCore (2.13.3)
-  - AWSMobileClient (2.13.3):
-    - AWSAuthCore (= 2.13.3)
-    - AWSCognitoIdentityProvider (= 2.13.3)
+  - AWSCore (2.13.4)
+  - AWSMobileClient (2.13.4):
+    - AWSAuthCore (= 2.13.4)
+    - AWSCognitoIdentityProvider (= 2.13.4)
   - CwlCatchException (1.0.2)
   - CwlPreconditionTesting (1.1.1):
     - CwlCatchException
@@ -24,7 +24,7 @@ DEPENDENCIES:
   - SwiftLint
 
 SPEC REPOS:
-  https://cdn.cocoapods.org/:
+  trunk:
     - AWSAuthCore
     - AWSCognitoIdentityProvider
     - AWSCognitoIdentityProviderASF
@@ -50,11 +50,11 @@ CHECKOUT OPTIONS:
     :tag: 1.2.0
 
 SPEC CHECKSUMS:
-  AWSAuthCore: 93b71ac38596e75790015c7299c725bb09ae1d5f
-  AWSCognitoIdentityProvider: 3480819d983e78eda7a43e141273756784be30cb
+  AWSAuthCore: 72b4bd064c28985ea5345c62759632d511de342a
+  AWSCognitoIdentityProvider: a2d1d2857316519c018c03ac8205cf78154db5c0
   AWSCognitoIdentityProviderASF: f94f1a502e72ef3d0a1de93e10bf7a79c8698118
-  AWSCore: fc361166b595e3c0183c55987743b295646c39d2
-  AWSMobileClient: 9149b664d1a89279bd49d36598c7afc38a63d7d1
+  AWSCore: 06beea22b6bdbfe9f5ab5015c6901e8475c746a8
+  AWSMobileClient: 33ecce524fbc011d543dae8306ca29a43ecb72e5
   CwlCatchException: 70a52ae44ea5d46db7bd385f801a94942420cd8c
   CwlPreconditionTesting: d33a4e4f285c0b885fddcae5dfedfbb34d4f3961
   SwiftFormat: b72e592ea0979aeee53f6052abff291181364933