commands: Inform buyer when order is canceled

When the seller cancels an order, the buyer will get a wrong
and confusing message:

```
You have cancelled the order ID: orderID
```

So, in this commit, the bot
sends a message that tells them: "Order orderId has been
cancelled. There is no need to create an invoice."

bot/commands.js

@@ -327,7 +327,7 @@ const cancelAddInvoice = async (ctx, order, job) => {
           );
         }
       } else {
-        await messages.successCancelOrderMessage(ctx, user, order, i18nCtx);
+        await messages.successCancelOrderInvoiceMessage(ctx, user, order, i18nCtx);
       }
     }
   } catch (error) {

bot/messages.ts

@@ -977,6 +977,17 @@ const successCancelOrderMessage = async (ctx: MainContext, user: UserDocument, o
   }
 };
 
+const successCancelOrderInvoiceMessage = async (ctx: MainContext, user: UserDocument, order: IOrder, i18n: I18nContext) => {
+  try {
+    await ctx.telegram.sendMessage(
+      user.tg_id,
+      i18n.t('cancel_invoice', { orderId: order._id })
+    );
+  } catch (error) {
+    logger.error(error);
+  }
+};
+
 const counterPartyCancelOrderMessage = async (ctx: MainContext, user: UserDocument, order: IOrder, i18n: I18nContext) => {
   try {
     await ctx.telegram.sendMessage(
@@ -1680,6 +1691,7 @@ module.exports = {
   successCompleteOrderMessage,
   successCancelOrderByAdminMessage,
   successCancelOrderMessage,
+  successCancelOrderInvoiceMessage,
   badStatusOnCancelOrderMessage,
   invoicePaymentFailedMessage,
   userCantTakeMoreThanOneWaitingOrderMessage,

locales/en.yaml

@@ -273,6 +273,7 @@ invoice_already_being_paid: You have alreday send an invoice for this order and
 lightning_address_saved: Lightning address has been saved
 cancel_error: This order cannot be cancelled at this moment
 cancel_success: 'You have cancelled the order ID: ${orderId}!'
+cancel_invoice: 'Order ${orderId} has been cancelled, no need to create an invoice.'
 cancelall_success: You have cancelled all your published orders!
 order_cancelled_by_admin: 'Admin has cancelled the order ID: ${orderId}!'
 order_completed: 'You have completed the order ID: ${orderId}!'