Added uuid as a dependency to generate the ids of the uploaded files

lib/src/resources/firebase_storage_provider.dart

@@ -1,4 +1,22 @@
 import 'dart:async';
 import 'dart:io';
 
-import 'package:'
+import 'package:firebase_storage/firebase_storage.dart';
+import 'package:uuid/uuid.dart';
+
+class FirebaseStorageProvider {
+  final FirebaseStorage _storage;
+  final Uuid _uuid;
+  // [FirebaseStorage] and [Uuid] instances can be injected for testing purposes.
+  // Don't remove.
+  FirebaseStorageProvider([FirebaseStorage storage, Uuid uuid])
+      : _storage = storage ?? FirebaseStorage.instance,
+        _uuid = uuid ?? Uuid();
+
+  /// Uploads a given file to the firebase storage bucket.
+  ///
+  /// It returns a [StorageUploadTask] which contains the status of the upload.
+  /// The [folder] parameters allows the file to be stored at any path in the
+  /// bucket.
+  StorageUploadTask uploadFile(File file, {String folder}) {}
+}

pubspec.yaml

@@ -31,6 +31,7 @@ dependencies:
   mockito: ^4.0.0
   rxdart: ^0.20.0
   sqflite: ^1.1.0
+  uuid: ^2.0.0
 
 dev_dependencies:
   flutter_test: