feat: calcular troco com base no valor recebido

gestaoRaul/templates/base.html

@@ -43,13 +43,13 @@
             <ul>
                 <li class="nav-item"><a href="{% url 'home' %}" class="nav-link">Início</a></li>
                 <li class="nav-item"><a href="{% url 'comandas' %}" class="nav-link">Comandas</a></li>
-                <li class="nav-item"><a href="{% url 'viewBalcao' %}" class="nav-link">Balcão</a></li>
+                <!-- <li class="nav-item"><a href="{% url 'viewBalcao' %}" class="nav-link">Balcão</a></li> -->
                 <li class="nav-item"><a href="{% url 'mapMesas' %}" class="nav-link">Mapa</a></li>
                 <li class="nav-item"><a href="{% url 'products' %}" class="nav-link">Produtos</a></li>
             </ul>
 
             <div class="login-button">
-                <button><a href="#">Entrar</a></button>
+                <button onclick="entrar()"><a href="#">Entrar</a></button>
             </div>
         </div>
     </header>

gestaoRaul/templates/static/comandas/js/viewbalcao.js

@@ -2,14 +2,26 @@
 
 function modal_payment_comanda() {
     document.getElementById('payment-comanda').style.display = 'block';
+    recebido = document.getElementById('recebido')
+    recebido.focus()
+}
+
+function troco(){
+  recebido = document.getElementById('recebido').value
+  total = document.getElementById('first-total').innerHTML
+  resultado = document.getElementById('troco')
+  total = total.replace('R$ ','')
+  total = total.replace(',','.')
+  result = recebido - total
+  resultado.innerHTML = 'Troco: R$ '+result
 }
 
 function close_modal_payment_comanda() {
     document.getElementById('payment-comanda').style.display = 'none';
+    document.getElementById('search-product').focus()
 }
 
 
-
 function imprimirFichas() {
     const element = document.getElementById("list-products-balcao");
     const style = `<style>
@@ -57,11 +69,19 @@ function backPage() {
 document.onkeydown = teclado
 
 function teclado(event){
-  if (event.keyCode == 13){
-    addProductBalcao()
-  }else{
-    console.log('')
-  }
+  if (document.getElementById('payment-comanda').style.display == 'none'){
+      if (event.keyCode == 13){
+        addProductBalcao()
+      }else{
+        console.log(event.keyCode)
+      }
+    }else{
+      if (event.keyCode == 13){
+        troco()
+      }else{
+        console.log('')
+      }
+    }
 
 }
 
@@ -123,7 +143,6 @@ document.getElementById('productForm').addEventListener('submit', function(event
 
 
 
-
 function searchProduct() {
   setTimeout(() => {
     time();