[update] Refactor CheckUpPage to separate regular medications and supplements in invoice generation. Update Medicine entity to include supplement flag and adjust database queries accordingly. Enhance error handling for medicine data validation.

src/main/java/BsK/server/network/handler/ServerHandler.java

@@ -374,7 +374,7 @@ public class ServerHandler extends SimpleChannelInboundHandler<TextWebSocketFram
         log.debug("Received GetMedInfoRequest");
         try {
           ResultSet rs = statement.executeQuery(
-                  "select med_id, med_name, med_company, med_description, quantity, med_unit, med_selling_price, preference_note\n" +
+                  "select med_id, med_name, med_company, med_description, quantity, med_unit, med_selling_price, preference_note, supplement\n" +
                           "    from Medicine"
           );
 
@@ -391,10 +391,11 @@ public class ServerHandler extends SimpleChannelInboundHandler<TextWebSocketFram
                 String medUnit = rs.getString("med_unit");
                 String medSellingPrice = rs.getString("med_selling_price");
                 String preferenceNote = rs.getString("preference_note");
+                String supplement = rs.getString("supplement");
 
 
                 String result = String.join("|",medId, medName, medCompany, medDescription, quantity, medUnit,
-                        medSellingPrice, preferenceNote != null ? preferenceNote : "");
+                        medSellingPrice, preferenceNote != null ? preferenceNote : "", supplement != null ? supplement : "0");
                 resultList.add(result);
             }