Added favouriten to persistance

app/src/main/java/com/example/mampfmobil/ui/MampfMobil.java

@@ -281,6 +281,18 @@ public class MampfMobil {
         CSVFileHelper.saveCSVFile(context, fileName6, csvBestellungen);
 
 
+
+
+        // bestellungsteil besteht aus  Customer-ID, ShopItem-ID
+        String csvFavoriten = "";
+        for(Customer c:MampfMobil.customers){
+            for(ShopItem sI: c.favoriten){
+                csvFavoriten = csvFavoriten + c.id + ","+ sI.id + "\n";
+            }
+        }
+        String fileName7 = "favoriten.csv";
+        CSVFileHelper.saveCSVFile(context, fileName7, csvBestellungen);
+
     }
 
     public static void takefromPersistance() {
@@ -458,5 +470,33 @@ public class MampfMobil {
                 }
             }
         }
+
+
+
+        String fileName7 = "favoriten.csv";
+        String csvData7 = CSVFileHelper.loadCSVFile(context, fileName7);
+        if (csvData7 != null) {
+            String[] lines = csvData7.split("\n");
+            for (String line : lines) {
+                String[] data = line.split(",");
+
+                if (data.length >= 2) {
+                    int cusId = Integer.parseInt(data[0]);
+                    int shopItemId = Integer.parseInt(data[0]);
+
+                    for (Customer c : MampfMobil.customers) {
+                        if (c.id == cusId) {
+                            for (Supplier s : MampfMobil.suppliers) {
+                                for (ShopItem sI : s.shopItems) {
+                                    if (sI.id == shopItemId) {
+                                        c.addToFavourits(sI);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
     }
 }