1 files changed, 33 insertions, 0 deletions
diff --git a/src/lq/UserUtil.java b/src/lq/UserUtil.java
new file mode 100644
index 0000000..4fd9452
--- /dev/null
+++ b/src/lq/UserUtil.java
@@ -0,0 +1,33 @@
+package lq;
+
+import javax.servlet.http.HttpServletRequest;
+import com.google.appengine.api.users.User;
+import com.google.appengine.api.users.UserService;
+import com.google.appengine.api.users.UserServiceFactory;
+
+public class UserUtil {
+    public static final String getAuthenticatedEmail() {
+        UserService userService = UserServiceFactory.getUserService();
+        User user = userService.getCurrentUser();
+        if (user == null) {
+            return null;
+        }
+        else {
+            return user.getEmail();
+        }
+    }
+
+    public static final boolean isAuthenticated() {
+        return getAuthenticatedEmail() != null;
+    }
+
+    public static final String getLoginUrl(String requestUrl) {
+        UserService userService = UserServiceFactory.getUserService();
+        return userService.createLoginURL(requestUrl);
+    }
+
+    public static final String getLogoutUrl(String requestUrl) {
+        UserService userService = UserServiceFactory.getUserService();
+        return userService.createLogoutURL(requestUrl);
+    }
+}