Add support for image uploads

vrchat_dart/tool/patch_output.dart

@@ -5,6 +5,21 @@ import 'package:fixer/fixer.dart';
 import 'package:path/path.dart' as path;
 import 'package:recase/recase.dart';
 
+const defaultFormData = "FormData.fromMap({'file': file});";
+const formDataPatches = <String, Map<String, String>>{
+  'files_api.dart': {
+    '/file/image': '''
+FormData.fromMap({
+  'file': file,
+  'tag': tag,
+  if (animationStyle != null) 'animationStyle': animationStyle,
+  if (maskTag != null) 'maskTag': maskTag,
+});''',
+    '/icon': defaultFormData,
+    '/gallery': defaultFormData,
+  },
+};
+
 void main() {
   final spec =
       jsonDecode(File(path.join('build', 'spec.json')).readAsStringSync());
@@ -95,7 +110,20 @@ void patchApi() {
           .whereType<File>();
 
   for (final file in apiFiles) {
-    final content = file.readAsStringSync();
+    var content = file.readAsStringSync();
+
+    final fdp =
+        formDataPatches[file.path.split(Platform.pathSeparator).last] ?? {};
+    final formDatas = RegExp(r'multipart\/form-data').allMatches(content);
+
+    if (fdp.length != formDatas.length) {
+      throw Exception('Missing FormData patches for ${file.path}');
+    }
+
+    for (final MapEntry(key: path, value: bodyData) in fdp.entries) {
+      content = content.patchMultipartUpload(path: path, bodyData: bodyData);
+    }
+
     file.writeAsStringSync(content);
   }
 }
@@ -157,3 +185,20 @@ void patchAnalysisIssues() {
     file.writeAsStringSync(contents);
   }
 }
+
+extension on String {
+  String patchMultipartUpload({
+    required String path,
+    required String bodyData,
+  }) {
+    final escapedPath = RegExp.escape(path);
+    final tabbedBodyData = bodyData.replaceAll('\n', '\n      ');
+    return replaceFirstMapped(
+      RegExp("final _path = r'$escapedPath';(.+?)try {}", dotAll: true),
+      (m) => '''
+final _path = r'$path';${m[1]}try {
+      _bodyData = $tabbedBodyData
+    }''',
+    );
+  }
+}

vrchat_dart_generated/lib/src/api/files_api.dart

@@ -1212,7 +1212,9 @@ class FilesApi {
 
     dynamic _bodyData;
 
-    try {} catch (error, stackTrace) {
+    try {
+      _bodyData = FormData.fromMap({'file': file});
+    } catch (error, stackTrace) {
       throw DioException(
         requestOptions: _options.compose(
           _dio.options,
@@ -1308,7 +1310,9 @@ class FilesApi {
 
     dynamic _bodyData;
 
-    try {} catch (error, stackTrace) {
+    try {
+      _bodyData = FormData.fromMap({'file': file});
+    } catch (error, stackTrace) {
       throw DioException(
         requestOptions: _options.compose(
           _dio.options,
@@ -1410,7 +1414,14 @@ class FilesApi {
 
     dynamic _bodyData;
 
-    try {} catch (error, stackTrace) {
+    try {
+      _bodyData = FormData.fromMap({
+        'file': file,
+        'tag': tag,
+        if (animationStyle != null) 'animationStyle': animationStyle,
+        if (maskTag != null) 'maskTag': maskTag,
+      });
+    } catch (error, stackTrace) {
       throw DioException(
         requestOptions: _options.compose(
           _dio.options,