reduce balance by amount

backend/src/controllers/carts.c

@@ -42,7 +42,7 @@ void route_post_carts_purchase(HttpCtx* ctx)
             RESPOND_SERVER_ERROR(ctx);
             goto l0_return;
         }
-        total_dkk_cent += price.price_dkk_cent;
+        total_dkk_cent += price.price_dkk_cent * req.items.data[i].amount;
         product_price_vec_push(&prices, price);
     }
 

backend/test/test.ts

@@ -101,6 +101,10 @@ async function testCartsAndReceipts(t: Deno.TestContext, token: string) {
 
     const user2 = await sessionUser(token);
     assertNotEquals(user1.balance_dkk_cent, user2.balance_dkk_cent);
+    assertEquals(
+        user1.balance_dkk_cent - user2.balance_dkk_cent,
+        1195 * 2 + 1295 * 5,
+    );
 
     if (!receiptId) {
         return;
@@ -150,6 +154,7 @@ async function sessionUser(
     if (!res.ok) {
         throw new Error();
     }
+    // console.log(res.user);
     return res.user;
 }