First commit

lib/services/gcs.dart

@@ -0,0 +1,44 @@
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+import 'package:http_parser/http_parser.dart';
+
+class GcsService {
+  // ========================================
+  // ======== GCS GOOGLE API SERVICE ========
+
+  static const GCS_GOOGLE_BASE_URI = "https://storage.googleapis.com";
+  static const GCS_GOOGLE_UPLOAD_ENDPOINT = "/upload/storage/v1/b/";
+  static const GET_BUCKET_STS_GOOGLE_ENDPOINT =
+      "/api.GcsApi/GetBucketSTSGoogle";
+
+  Future<bool> uploadImage(String token, String bucketName, String resourceName,
+      String fileName, File file) async {
+    var headersData = {
+      "Authorization": "Bearer $token",
+      "Content-Type": "image/png",
+    };
+    var paramsData = {
+      'uploadType': 'multipart/related; boundary=image/png',
+      'name': "$resourceName$fileName",
+    };
+
+    var uploadURI = "$GCS_GOOGLE_BASE_URI$GCS_GOOGLE_UPLOAD_ENDPOINT";
+
+    var query = paramsData.entries.map((p) => '${p.key}=${p.value}').join('&');
+
+    var request = http.MultipartRequest(
+        "POST", Uri.parse("$uploadURI$bucketName/o?$resourceName$query"));
+
+    request.headers.addAll(headersData);
+    request.files.add(await http.MultipartFile.fromPath(fileName, file.path,
+        contentType: MediaType('image', 'png')));
+
+    var response = await request.send();
+    if (response.statusCode != 200) {
+      throw Exception('Failed to upload image.');
+    }
+
+    return response.statusCode == 200;
+  }
+}