working on subscription

src/main/java/de/srsoftware/widerhall/data/User.java

@@ -9,6 +9,7 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.time.LocalDate;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -28,8 +29,12 @@ public class User {
     }
 
     public static User create(String email, String name, String password) throws SQLException {
-        var salt = Util.sha256(email + name + LocalDate.now());
-        var hashedPass = Util.sha256(password+salt);
+        String salt = null;
+        String hashedPass = null;
+        if (password != null) {
+            salt = Util.sha256(email + name + LocalDate.now());
+            hashedPass = Util.sha256(password + salt);
+        }
         return new User(email,name,salt,hashedPass).save();
     }
 
@@ -102,6 +107,7 @@ public class User {
 
 
     private boolean matching(String password) {
+        if (hashedPass == null && password == null) return true;
         return hashedPass.equals(Util.sha256(password+salt));
     }
 
@@ -126,8 +132,13 @@ public class User {
     }
 
     private User save() throws SQLException {
+        var values = new HashMap<String,Object>();
+        values.put(EMAIL,email);
+        values.put(NAME,name);
+        if (salt != null) values.put(SALT,salt);
+        if (hashedPass != null) values.put(HASHED_PASS,hashedPass);
         Database.open().insertInto(TABLE_NAME)
-                .values(Map.of(EMAIL,email,NAME,name,SALT,salt,HASHED_PASS,hashedPass))
+                .values(values)
                 .run();
         return this;
     }