feed detail and map improved back navigation

Author: Alessandro100

src/app/screens/Feed/components/FeedNavigationControls.tsx

@@ -17,20 +17,32 @@ export default function FeedNavigationControls({
   const t = useTranslations('common');
   const router = useRouter();
 
+  const handleBack = (): void => {
+    const hasReferrer = document.referrer !== '';
+    const hasSameOriginReferrer =
+      hasReferrer && new URL(document.referrer).origin === window.location.origin;
+
+    if (!hasSameOriginReferrer) {
+      router.push('/feeds');
+      return;
+    }
+
+    if (window.history.length > 1) {
+      router.back();
+      return;
+    }
+
+    router.push('/feeds');
+  };
+
   return (
     <Grid container spacing={3} alignItems='flex-end'>
       <Button
         sx={{ py: 0 }}
         size='large'
         startIcon={<ChevronLeft />}
         color={'inherit'}
-        onClick={() => {
-          if (window.history.length > 1) {
-            router.back();
-          } else {
-            router.push('/feeds');
-          }
-        }}
+        onClick={handleBack}
       >
         {t('back')}
       </Button>

src/app/screens/Feed/components/FullMapView.tsx

@@ -252,10 +252,10 @@ export default function FullMapView({
               color={'inherit'}
               sx={{ pl: 0, display: { xs: 'none', md: 'inline-flex' } }}
               onClick={() => {
-                if (!hasError && feedId != null) {
-                  router.push(`/feeds/gtfs/${feedId}`);
+                if (feedId != null) {
+                  router.replace(`/feeds/gtfs/${feedId}`);
                 } else {
-                  router.push('/');
+                  router.replace('/');
                 }
               }}
             >
@@ -389,9 +389,9 @@ export default function FullMapView({
               sx={{ position: 'absolute', top: 10, right: 10, zIndex: 1000 }}
               onClick={() => {
                 if (!hasError && feedId != null) {
-                  router.push(`/feeds/${feed?.data_type}/${feedId}`);
+                  router.replace(`/feeds/${feed?.data_type}/${feedId}`);
                 } else {
-                  router.push('/');
+                  router.replace('/');
                 }
               }}
             >