Merge pull request #121 from wordpress-mobile/feature/invalid-token

Feature/invalid token

Author: SergioEstevao

WordPressKit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "WordPressKit"
-  s.version       = "3.0.0"
+  s.version       = "3.1.0"
   s.summary       = "WordPressKit offers a clean and simple WordPress.com and WordPress.org API."
 
   s.description   = <<-DESC

WordPressKit/WordPressComRestApi.swift

@@ -60,6 +60,8 @@ open class WordPressComRestApi: NSObject {
 
     private let localeKey: String
 
+    private var invalidTokenHandler: (() -> Void)? = nil
+
     /**
      Configure whether or not the user's preferred language locale should be appended. Defaults to true.
      */
@@ -154,6 +156,10 @@ open class WordPressComRestApi: NSObject {
         uploadSessionManager.session.invalidateAndCancel()
     }
 
+    @objc func setInvalidTokenHandler(_ handler: @escaping () -> Void) {
+        invalidTokenHandler = handler
+    }
+
     // MARK: Network requests
 
     private func request(method: HTTPMethod,
@@ -443,6 +449,9 @@ extension WordPressComRestApi {
         ]
 
         let mappedError = errorsMap[errorCode] ?? WordPressComRestApiError.unknown
+        if mappedError == .invalidToken {
+            invalidTokenHandler?()
+        }
         userInfo[WordPressComRestApi.ErrorKeyErrorCode] = errorCode
         userInfo[WordPressComRestApi.ErrorKeyErrorMessage] = errorDescription
         userInfo[NSLocalizedDescriptionKey] =  errorDescription