Fixed current user data

nise-backend/src/main/kotlin/com/nisemoe/nise/service/AuthService.kt

@@ -35,6 +35,14 @@ class AuthService(
         return !(authentication == null || authentication is AnonymousAuthenticationToken || authentication.principal == null)
     }
 
+    fun parseJoinDate(joinDate: String?): OffsetDateTime? {
+        return try {
+            if(joinDate == null) null else OffsetDateTime.parse(joinDate)
+        } catch (e: Exception) {
+            null
+        }
+    }
+
     fun getCurrentUser(): UserInfo {
         if(!this.isLoggedIn())
             throw IllegalStateException("User is not logged in")
@@ -45,8 +53,8 @@ class AuthService(
         return UserInfo(
             userId = (userDetails.attributes["id"] as Int).toLong(),
             username = userDetails.attributes["username"] as String,
-            country = userDetails.attributes["countryCode"] as String?,
-            joinDate = OffsetDateTime.parse(userDetails.attributes["joinDate"] as String)
+            country = userDetails.attributes["country_code"] as String?,
+            joinDate = parseJoinDate(userDetails.attributes["join_date"] as String?)
         )
     }