diff --git a/api/client/payer.php b/api/client/payer.php
index ed0cf8f..10bffb1 100644
--- a/api/client/payer.php
+++ b/api/client/payer.php
@@ -25,6 +25,7 @@ if (donne("quantite")) {
     $montant = $prixItem * $quantite;
 } else {
     $montant = floatval($_POST["montant"]);
+    $quantite = 0;
 }
 
 if ($montant <= 0) {
@@ -52,7 +53,7 @@ if (!$requete->execute()) {
     retour("erreur_bdd", ["message" => $requete->error]);
 }
 $requete->close();
-$id = transaction(TRANSACTION_PAIEMENT, $_POST["idCarte"], $montant);
+$id = transaction(TRANSACTION_PAIEMENT, $_POST["idCarte"], $montant, $quantite);
 
 
 retour("ok", ["id" => $id, "soldeAncien" => $soldeAncien, "soldeNouveau" => $soldeNouveau]);
diff --git a/api/client/vidange.php b/api/client/vidange.php
new file mode 100644
index 0000000..3b14803
--- /dev/null
+++ b/api/client/vidange.php
@@ -0,0 +1,39 @@
+<?php
+
+require_once("../commun.php");
+
+verifierDroit(2);
+
+if (!(donne("idCarte"))) {
+    retour("requete_malformee");
+}
+
+if (!clientExiste(donne("idCarte"))) {
+    retour("client_inconnu");
+}
+
+$requete = $db->prepare("SELECT solde FROM Clients WHERE idCarte=?");
+$requete->bind_param("s", $_POST["idCarte"]);
+$requete->bind_result($soldeAncien);
+if (!$requete->execute()) {
+    retour("erreur_bdd", ["message" => $requete->error]);
+}
+$requete->fetch();
+$requete->close();
+
+if ($soldeAncien <= 0) {
+    retour("solde_negatif");
+}
+
+$requete = $db->prepare("UPDATE Clients SET solde=0 WHERE idCarte=?");
+$requete->bind_param("s", $_POST["idCarte"]);
+if (!$requete->execute()) {
+    retour("erreur_bdd", ["message" => $requete->error]);
+}
+$requete->close();
+$id = transaction(TRANSACTION_VIDANGE, $_POST["idCarte"], $soldeAncien);
+
+
+retour("ok", ["id" => $id, "soldeAncien" => $soldeAncien]);
+
+?>
--
libgit2 0.21.2