Added a function that downloads a file from the storage bucket given its path, change the size of the thumnails to 256 per side

functions/src/index.ts

@@ -42,7 +42,7 @@ export const generateThumb = functions.storage.object().onFinalize(async object
     const thumbnailLocalPath = join(workingDirectory, thumbnailName);
 
     await sharp(tmpFilePath)
-        .resize(124, 124)
+        .resize(256, 256)
         .toFile(thumbnailLocalPath);
 
     // Upload the resulting thumnail to the same directory as the original file.

lib/src/blocs/event_bloc.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 
 import 'package:meta/meta.dart';
 import 'package:rxdart/rxdart.dart';
@@ -31,6 +32,9 @@ class EventBloc {
   Observable<List<TaskModel>> get eventTasks =>
       _tasks.stream.transform(kTaskListPriorityTransforemer);
 
+  Future<File> get testFile => _storage.getFile(
+      '26LVkBPFkHVekVDatitVh6MXrm53/thumb@c64293a0-5970-11e9-d441-03e3ea627257.png');
+
   EventBloc({
     @required this.eventName,
   });

lib/src/resources/firebase_storage_provider.dart

@@ -2,7 +2,9 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:firebase_storage/firebase_storage.dart';
+import 'package:path_provider/path_provider.dart';
 import 'package:uuid/uuid.dart';
+
 export 'package:firebase_storage/firebase_storage.dart'
     show StorageUploadTask, StorageTaskSnapshot;
 
@@ -42,6 +44,22 @@ class FirebaseStorageProvider {
   Future<void> deleteFile(String path) {
     return _storage.child(path).delete();
   }
+
+  // TODO: Add tests for this method.
+  // TODO: Delete the tmp file when the app closes.
+  /// Returns a future of the file from the path.
+  ///
+  /// Downloads the raw bytes from the sotrage buckets and converts it to a file.
+  Future<File> getFile(String path) async {
+    final fileName = path.split('/').last;
+    final fileReference = _storage.child(path);
+    final metadata = await fileReference.getMetadata();
+    final bytes = await fileReference.getData(metadata.sizeBytes);
+
+    final Directory tmp = await getTemporaryDirectory();
+    final file = File('${tmp.path}/$fileName');
+    return file.writeAsBytes(bytes);
+  }
 }
 
 final storageProvider = FirebaseStorageProvider();

lib/src/screens/event_screen.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 
 import '../utils.dart' show kBigTextStyle;
@@ -93,9 +95,16 @@ class _EventScreenState extends State<EventScreen>
 
   Widget buildMediaView() {
     return Center(
-      child: Text(
+      child: FutureBuilder(
-        'Media',
+        future: bloc.testFile,
-        style: kBigTextStyle,
+        builder: (BuildContext context, AsyncSnapshot<File> snap) {
+          if (!snap.hasData) {
+            return Center(
+              child: LoadingIndicator(),
+            );
+          }
+          return Image.file(snap.data);
+        },
       ),
     );
   }

pubspec.yaml

@@ -31,6 +31,7 @@ dependencies:
   http: ^0.12.0
   image_picker: ^0.5.0+3
   mockito: ^4.0.0
+  path_provider: ^0.5.0+1
   rxdart: ^0.20.0
   sqflite: ^1.1.0
   uuid: ^2.0.0