Rewrite ReachabilityUtils in Swift

Author: mokagio

WordPress/Classes/System/WordPress-Bridging-Header.h

@@ -38,7 +38,6 @@
 #import "PostTag.h"
 #import "PostTagService.h"
 
-#import "ReachabilityUtils.h"
 #import "ReaderGapMarker.h"
 #import "ReaderPost.h"
 #import "ReaderPostService.h"

WordPress/Classes/Utility/Reachability/ReachabilityAlert.swift

@@ -1,8 +1,8 @@
 import Foundation
 
-private var currentReachabilityAlert: _ReachabilityAlert?
+var currentReachabilityAlert: ReachabilityAlert?
 
-class _ReachabilityAlert: NSObject {
+class ReachabilityAlert: NSObject {
 
     let retryBlock: (() -> Void)?
 
@@ -38,6 +38,6 @@ class _ReachabilityAlert: NSObject {
         // Note: This viewController might not be visible anymore
         alertController.presentFromRootViewController()
 
-        currentReachabilityAlert = self;
+        currentReachabilityAlert = self
     }
 }

WordPress/Classes/Utility/Reachability/ReachabilityUtils.h

@@ -0,0 +1,34 @@
+import Foundation
+
+@objc
+public class ReachabilityUtils: NSObject {
+
+    @objc
+    public static func isInternetReachable() -> Bool {
+        (UIApplication.shared as? NetworkConnectionAvailabilityGetting)?.connectionAvailable ?? false
+    }
+
+    @objc
+    public static func showAlertNoInternetConnection() {
+        ReachabilityAlert(retryBlock: nil).show()
+    }
+
+    @objc
+    public static func showAlertNoInternetConnection(retryBlock: (() -> Void)? = nil) {
+        ReachabilityAlert(retryBlock: retryBlock).show()
+    }
+
+    @objc
+    public static func noConnectionMessage() -> String {
+        NSLocalizedString(
+            "reachability-utils.alert.utils",
+            value: "The internet connection appears to be offline.",
+            comment: "Message of error prompt shown when no internet connection is available"
+        )
+    }
+
+    @objc
+    public static func isAlertShowing() -> Bool {
+        currentReachabilityAlert != nil
+    }
+}