BuyCourses: Add message to configure currency

plugin/buycourses/lang/english.php

@@ -142,7 +142,7 @@ $strings['XIsOnlyPaymentMethodAvailable'] = '%s is the only payment method avail
 $strings['hide_free_text'] = "Hide 'Free' text";
 $strings['culqi_enable'] = "Enable culqi";
 $strings['include_services'] = "Include services";
-
+$strings['CurrencyIsNotConfigured'] = "Please, configure a currency before continuing.";
 $strings['Services'] = "Services";
 $strings['ServiceName'] = "Service name";
 $strings['AppliesTo'] = "Applies to";

plugin/buycourses/lang/spanish.php

@@ -209,3 +209,4 @@ $strings['PurchaseDetailsIntro'] = "Detalles de la comprar";
 $strings['PurchaseDetailsEnd'] = "Atentamente";
 $strings['ProductName'] = "Nombre producto";
 $strings['BankAccountIntro'] = "Información cuentas bancarias";
+$strings['CurrencyIsNotConfigured'] = "Por favor, confogure una moneda antes de continuar.";

plugin/buycourses/src/configure_course.php

@@ -36,6 +36,13 @@ $entityManager = Database::getManager();
 $userRepo = UserManager::getRepository();
 
 $currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+}
+
 $currencyIso = null;
 
 if ($editingCourse) {
@@ -254,7 +261,12 @@ if ($commissionsEnable === 'true') {
 
 $form->addHidden('t', null);
 $form->addHidden('i', null);
-$form->addButtonSave(get_lang('Save'));
+$button = $form->addButtonSave(get_lang('Save'));
+
+if (empty($currency)) {
+    $button->setAttribute('disabled');
+}
+
 $form->freeze(['product_type', 'name']);
 
 if ($form->validate()) {