display a popup if the meal voucher was already scan on this order

lacagette_addons/pos_meal_voucher/i18n/fr.po

@@ -316,3 +316,24 @@ msgstr " ) est inférieur à la valeur du/des ticket(s)( "
 #, python-format
 msgid "Warning, the input amount of meal voucher is above the maximum amount of "
 msgstr "Le montant saisi est supérieur au montant maximum/au maximum éligible de "
+
+#. module: pos_meal_voucher
+#. openerp-web
+#: code:addons/pos_meal_voucher/static/src/js/screens.js:
+#, python-format
+msgid "Meal Voucher already used"
+msgstr "Ticket restaurant déjà scanné"
+
+#. module: pos_meal_voucher
+#. openerp-web
+#: code:addons/pos_meal_voucher/static/src/js/screens.js:
+#, python-format
+msgid "The paper meal voucher "
+msgstr "Le ticket restaurant "
+
+#. module: pos_meal_voucher
+#. openerp-web
+#: code:addons/pos_meal_voucher/static/src/js/screens.js:
+#, python-format
+msgid " was already used"
+msgstr " a déjà été scanné"
\ No newline at end of file

lacagette_addons/pos_meal_voucher/static/src/js/models.js

@@ -7,7 +7,7 @@ odoo.define("pos_meal_voucher.models", function (require) {
 
     var models = require("point_of_sale.models");
     var utils = require("web.utils");
-
+   
     var round_pr = utils.round_precision;
 
     models.load_fields("product.product", ["meal_voucher_ok"]);
@@ -16,6 +16,14 @@ odoo.define("pos_meal_voucher.models", function (require) {
 
     var OrderSuper = models.Order.prototype;
     var Order = models.Order.extend({
+                
+        paper_meal_vouche_number_already_used: function(meal_voucher_number){
+            for(const paiementLine of this.get_paymentlines()){
+                if(paiementLine.statement_note == meal_voucher_number) return true
+            }
+            return false;
+        },
+        
 
         get_total_meal_voucher_eligible: function() {
             return round_pr(this.orderlines.reduce((function(sum, orderLine) {

lacagette_addons/pos_meal_voucher/static/src/js/screens.js

@@ -13,33 +13,46 @@ odoo.define("pos_meal_voucher.screens", function (require) {
     screens.ScreenWidget.include({
         barcode_meal_voucher_payment_action: function (code) {
 
-            // Display the payment screen, if it is not the current one.
-            if (this.pos.gui.current_screen.template !== "PaymentScreenWidget"){
-                this.gui.show_screen("payment");
-            }
-            var paymentScreen = this.pos.gui.current_screen;
-            var order = this.pos.get_order();
-            var amount = code.value;
-            var cashregister = null;
-            // find a meal voucher cash register, if exist
-            for ( var i = 0; i < this.pos.cashregisters.length; i++ ) {
-                if ( this.pos.cashregisters[i].journal.meal_voucher_type === "paper" ){
-                    cashregister = this.pos.cashregisters[i];
-                    break;
+            var oder = this.pos.get_order();
+            if(!oder.paper_meal_vouche_number_already_used(code.code)){
+                // Display the payment screen, if it is not the current one.
+                if (this.pos.gui.current_screen.template !== "PaymentScreenWidget"){
+                    this.gui.show_screen("payment");
                 }
-            }
-            if (!cashregister){
-                return;
+                var paymentScreen = this.pos.gui.current_screen;
+                var order = this.pos.get_order();
+                var amount = code.value;
+                var cashregister = null;
+                // find a meal voucher cash register, if exist
+                for ( var i = 0; i < this.pos.cashregisters.length; i++ ) {
+                    if ( this.pos.cashregisters[i].journal.meal_voucher_type === "paper" ){
+                        cashregister = this.pos.cashregisters[i];
+                        break;
+                    }
+                }
+                if (!cashregister){
+                    return;
+                }
+
+                // Add new payment line with the amount found in the barcode
+                this.pos.get_order().add_paymentline(cashregister);
+                paymentScreen.reset_input()
+                order.selected_paymentline.set_amount(amount);
+                order.selected_paymentline.statement_note = code.code;
+                paymentScreen.order_changes();
+                paymentScreen.render_paymentlines();
+                paymentScreen.$(".paymentline.selected .edit").text(paymentScreen.format_currency_no_symbol(amount));
+                
+            }else{
+                this.gui.show_popup("alert", {
+                    'title': _t("Meal Voucher Amount already used"),
+                    'body':  _t("The paper meal voucher ") +
+                    code.code + _t(" was already used"),
+
+                });
             }
 
-            // Add new payment line with the amount found in the barcode
-            this.pos.get_order().add_paymentline(cashregister);
-            paymentScreen.reset_input()
-            order.selected_paymentline.set_amount(amount);
-            order.selected_paymentline.statement_note = code.code;
-            paymentScreen.order_changes();
-            paymentScreen.render_paymentlines();
-            paymentScreen.$(".paymentline.selected .edit").text(paymentScreen.format_currency_no_symbol(amount));
+            
         },
 
         // Setup the callback action for the "meal_voucher_payment" barcodes.
@@ -97,7 +110,6 @@ odoo.define("pos_meal_voucher.screens", function (require) {
             var paymentScreen = this.pos.gui.current_screen;
             var order = this.pos.get_order();
 
-
             if(order.selected_paymentline.is_dematerialized_meal_voucher()){
                 var total_eligible = order.get_total_meal_voucher_eligible();
                 var total_received = order.get_total_meal_voucher_received();