media item and session images and location management, also refactoring and DRYing up code

lib/helpers/media_helpers.dart

@@ -1,13 +1,16 @@
 import 'package:flutter/material.dart';
 import 'package:sendtrain/database/database.dart';
 
-ImageProvider findMediaByType(List<MediaItem> media, String type) {
-    Iterable<MediaItem>? found = media.where((m) => m.type == MediaType.image);
+ImageProvider findMediaByType(List<MediaItem> media, MediaType type) {
+  Iterable<MediaItem>? found = media.where((m) => m.type == type);
+  Image image;
 
-    if (found.isNotEmpty) {
-      return NetworkImage(found.first.reference);
-    } else {
-      // Element is not found
-      return const AssetImage('assets/images/placeholder.jpg');
-    }
-  }
+  if (found.isNotEmpty) {
+    image = Image.network(found.first.reference);
+  } else {
+    // Element is not found
+    image = Image.asset('assets/images/placeholder.jpg');
+  }
+
+  return image.image;
+}

lib/helpers/widget_helpers.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+import 'package:sendtrain/database/database.dart';
+import 'package:sendtrain/widgets/media/media_details.dart';
+
+showMediaDetailWidget(BuildContext context, MediaItem media) {
+  showModalBottomSheet<void>(
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.all(Radius.circular(10.0)),
+      ),
+      context: context,
+      showDragHandle: true,
+      isScrollControlled: true,
+      useSafeArea: true,
+      builder: (BuildContext context) {
+        return MediaDetails(media: media);
+      });
+}