From 3890570bf190a63f8f34c47a7fd21e780a61b6b0 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Tue, 17 Jan 2017 11:57:50 +0300
Subject: juick-www: Facebook and VK login using scribejava

---
 juick-www/src/main/java/com/juick/www/Utils.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'juick-www/src/main/java/com/juick/www/Utils.java')

diff --git a/juick-www/src/main/java/com/juick/www/Utils.java b/juick-www/src/main/java/com/juick/www/Utils.java
index 37016ed2..d7b5597d 100644
--- a/juick-www/src/main/java/com/juick/www/Utils.java
+++ b/juick-www/src/main/java/com/juick/www/Utils.java
@@ -32,6 +32,7 @@ import java.net.URL;
 import java.net.URLConnection;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.Optional;
 
 /**
  *
@@ -108,4 +109,15 @@ public class Utils {
             return null;
         }
     }
+    /**
+     * Returns the viewName to return for coming back to the sender url
+     *
+     * @param request Instance of {@link HttpServletRequest} or use an injected instance
+     * @return Optional with the view name. Recomended to use an alternativa url with
+     * {@link Optional#orElse(java.lang.Object)}
+     */
+    public static Optional<String> getPreviousPageByRequest(HttpServletRequest request)
+    {
+        return Optional.ofNullable(request.getHeader("Referer")).map(requestUrl -> "redirect:" + requestUrl);
+    }
 }
-- 
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