diff --git a/src/Configuration.java b/src/Configuration.java
index ca5f784..26224c3 100644
--- a/src/Configuration.java
+++ b/src/Configuration.java
@@ -3,59 +3,77 @@ package src;
 import fr.istic.nplouzeau.cartaylor.api.Category;
 import fr.istic.nplouzeau.cartaylor.api.PartType;
 
+
 import java.util.Set;
 
 public class Configuration implements fr.istic.nplouzeau.cartaylor.api.Configuration {
-    private Engine e;
-    private Exterior ex;
-    private Interior in;
-    private Transmission tr;
-
+    private Set<PartType> selectedParts;
     private CompatibilityManager compatibilityManager;
-    private     
+         
 
     @Override
     public boolean isValid() {
         if ( this.isComplete()){
-            //TODO
+            
             return true;
                 
             }
         else{
             return false;
         }
-
-        return false;
     }
     
 
     @Override
     public boolean isComplete() {
+        if(selectedParts.size()==4){
+            return true;
+        }
         return false;
     }
 
     @Override
     public Set<PartType> getSelectedParts() {
-        return Set.of();
+        return selectedParts;
     }
 
     @Override
     public void selectPart(PartType chosenPart) {
-        
+        Category cat_chosenPart = chosenPart.getCategory();
+
+        //Vérifier s'il y a des pièces dans la même catégorie, si oui return
+        for( PartType pt: selectedParts){
+            if(pt.getCategory().equals(cat_chosenPart)){
+                System.out.println("Il y a une pièce dans la même catégorie dans la configuration");
+                return;
+            }
+        }
+        selectedParts.add(chosenPart);
     }
 
     @Override
     public PartType getSelectionForCategory(Category category) {
+        for( PartType pt: selectedParts){
+            if(pt.getCategory().equals(category)){
+                return pt;
+            }
+        }
         return null;
     }
 
     @Override
     public void unselectPartType(Category categoryToClear) {
+        for( PartType pt: selectedParts){
+            if(pt.getCategory().equals(categoryToClear)){
+                selectedParts.remove(pt);
+            }
+        }
+        System.out.println("Il n'y a pas des pièces dans cette catégorie");
 
     }
 
     @Override
     public void clear() {
-
+        this.selectedParts.clear();;
     }
 }
diff --git a/src/Engine.java b/src/Engine.java
deleted file mode 100644
index aaede7a..0000000
--- a/src/Engine.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package src;
-public class Engine extends PartType{
-    public Engine (String name){
-        super(name, E)
-    }
-
-}
\ No newline at end of file
diff --git a/src/Exterior.java b/src/Exterior.java
deleted file mode 100644
index 8b709e7..0000000
--- a/src/Exterior.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package src;
-
-public class Exterior extends PartType{
-    
-}
diff --git a/src/Interior.java b/src/Interior.java
deleted file mode 100644
index 55a5eae..0000000
--- a/src/Interior.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package src;
-public class Interior extends PartType{
-    public Interior (String name) {
-        this.super(name);
-        this.
-        
-    }
-
-}
\ No newline at end of file
diff --git a/src/Transmission.java b/src/Transmission.java
deleted file mode 100644
index 0a75ee5..0000000
--- a/src/Transmission.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package src;
- 
-public class Transmission extends PartType{
-    public Transmission( String nom){
-        super (nom);
-    }
-}
\ No newline at end of file