diff --git a/app/src/main/java/com/example/coach/api/HelperApi.java b/app/src/main/java/com/example/coach/api/HelperApi.java
index 8985b28..0043d6f 100644
--- a/app/src/main/java/com/example/coach/api/HelperApi.java
+++ b/app/src/main/java/com/example/coach/api/HelperApi.java
@@ -18,27 +18,28 @@ public class HelperApi {
         return api;
     }
 
-    public static <T> void call(Call<ResponseApi<T>> call, ICallbackApi<T> callback)
-    {
+    public static <T> void call(Call<ResponseApi<T>> call, ICallbackApi<T> callback) {
         call.enqueue(new Callback<ResponseApi<T>>() {
             @Override
             public void onResponse(Call<ResponseApi<T>> call, Response<ResponseApi<T>> response) {
-                Log.d("API", "code : " + response.body().getCode() +
-                        " message : " + response.body().getMessage() +
-                        " result : " + response.body().getResult()
-                );
+                // 1. On vérifie si la requête HTTP a réussi ET si on a un corps de réponse
                 if (response.isSuccessful() && response.body() != null) {
+                    // On peut maintenant logger sans risque
+                    Log.d("API", "code : " + response.body().getCode() +
+                            " message : " + response.body().getMessage());
+
                     callback.onSuccess(response.body().getResult());
                 } else {
+                    // Cas d'erreur HTTP (ex: 404) ou body null
                     callback.onError();
-                    Log.e("API", "Erreur API: " + response.code());
+                    Log.e("API", "Erreur HTTP ou Body null. Code: " + response.code());
                 }
             }
 
             @Override
             public void onFailure(Call<ResponseApi<T>> call, Throwable throwable) {
                 callback.onError();
-                Log.e("API", "Erreur API", throwable);
+                Log.e("API", "Erreur réseau / désérialisation", throwable);
             }
         });
     }
diff --git a/app/src/main/java/com/example/coach/api/IRequestApi.java b/app/src/main/java/com/example/coach/api/IRequestApi.java
index 0cbc9c6..148b289 100644
--- a/app/src/main/java/com/example/coach/api/IRequestApi.java
+++ b/app/src/main/java/com/example/coach/api/IRequestApi.java
@@ -22,4 +22,7 @@ public interface IRequestApi {
 
     @DELETE("profil/{champs}")
     Call<ResponseApi<Integer>> supprProfil(@Path(value = "champs", encoded = true) String profilJson);
+
+    @DELETE("profil/{keep}")
+    Call<ResponseApi<Integer>> purgeProfils(@Path(value = "keep", encoded = true) String profilJson);
 }
diff --git a/app/src/main/java/com/example/coach/contract/IMainView.java b/app/src/main/java/com/example/coach/contract/IMainView.java
new file mode 100644
index 0000000..4b6abac
--- /dev/null
+++ b/app/src/main/java/com/example/coach/contract/IMainView.java
@@ -0,0 +1,5 @@
+package com.example.coach.contract;
+
+public interface IMainView extends IAllView{
+
+}
diff --git a/app/src/main/java/com/example/coach/presenter/MainPresenter.java b/app/src/main/java/com/example/coach/presenter/MainPresenter.java
new file mode 100644
index 0000000..8ea98a8
--- /dev/null
+++ b/app/src/main/java/com/example/coach/presenter/MainPresenter.java
@@ -0,0 +1,35 @@
+package com.example.coach.presenter;
+
+import com.example.coach.api.HelperApi;
+import com.example.coach.api.ICallbackApi;
+import com.example.coach.api.IRequestApi;
+import com.example.coach.contract.IMainView;
+
+public class MainPresenter {
+    private IMainView vue;
+    public void purgeBDD(Integer nb, ICallbackApi<Void> callback)
+    {
+        String json = "{\"keep\":\"" + nb + "\"}";
+        HelperApi.call(HelperApi.getApi().purgeProfils(json), new ICallbackApi<Integer>() {
+            @Override
+            public void onSuccess(Integer result) {
+                if (result >= 1) {
+                    vue.afficherMessage("profils supprimés : " + result);
+                    callback.onSuccess(null);
+                }else{
+                    vue.afficherMessage("BDD déjà purgée");
+                }
+            }
+
+            @Override
+            public void onError() {
+                vue.afficherMessage("échec suppression profils");
+            }
+        });
+    }
+
+    public MainPresenter(IMainView vue)
+    {
+        this.vue = vue;
+    }
+}
diff --git a/app/src/main/java/com/example/coach/view/MainActivity.java b/app/src/main/java/com/example/coach/view/MainActivity.java
index 07fef40..b6e5937 100644
--- a/app/src/main/java/com/example/coach/view/MainActivity.java
+++ b/app/src/main/java/com/example/coach/view/MainActivity.java
@@ -2,7 +2,10 @@ package com.example.coach.view;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.util.Log;
+import android.widget.Button;
 import android.widget.ImageButton;
+import android.widget.Toast;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
@@ -11,11 +14,16 @@ import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
 
 import com.example.coach.R;
+import com.example.coach.api.ICallbackApi;
+import com.example.coach.contract.IMainView;
+import com.example.coach.presenter.MainPresenter;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends AppCompatActivity implements IMainView {
 
     private ImageButton btnMonIMG;
     private ImageButton btnMonHistorique;
+    private Button btnPurge;
+    private MainPresenter presenter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -34,12 +42,14 @@ public class MainActivity extends AppCompatActivity {
     {
         chargeObjetsGraphiques();
         creerMenu();
+        presenter = new MainPresenter(this);
     }
 
     private void chargeObjetsGraphiques()
     {
         btnMonIMG = (ImageButton) findViewById(R.id.btnMonIMG);
         btnMonHistorique = (ImageButton) findViewById(R.id.btnMonHistorique);
+        btnPurge = (Button) findViewById(R.id.btnPurge);
     }
 
     private void ecouteMenu(Class classe)
@@ -52,5 +62,30 @@ public class MainActivity extends AppCompatActivity {
     {
         btnMonIMG.setOnClickListener(v -> ecouteMenu(CalculActivity.class));
         btnMonHistorique.setOnClickListener(v -> ecouteMenu(HistoActivity.class));
+        btnPurge.setOnClickListener(v -> btnPurge_clic());
+
+    }
+
+    private void btnPurge_clic()
+    {
+        presenter.purgeBDD(5, new ICallbackApi<Void>() {
+            @Override
+            public void onSuccess(Void result) {
+                //
+            }
+
+            @Override
+            public void onError() {
+                //
+            }
+        });
+    }
+
+    /**
+     * @param message
+     */
+    @Override
+    public void afficherMessage(String message) {
+        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 9e2fff8..8c0eebf 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -54,20 +54,41 @@
             android:layout_weight="1"
             android:orientation="vertical">
 
-            <TextView
-                android:id="@+id/textView5"
+            <LinearLayout
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:gravity="center_horizontal"
-                android:text="mon historique"
-                android:textSize="34sp" />
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/textView5"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:gravity="center_horizontal"
+                    android:text="mon historique"
+                    android:textSize="34sp" />
+
+                <ImageButton
+                    android:id="@+id/btnMonHistorique"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center_horizontal"
+                    app:srcCompat="@drawable/historique" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <Button
+                    android:id="@+id/btnPurge"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="Purger BDD" />
+            </LinearLayout>
 
-            <ImageButton
-                android:id="@+id/btnMonHistorique"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center_horizontal"
-                app:srcCompat="@drawable/historique" />
         </LinearLayout>
     </LinearLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file