fix: file uploading with multiple assets

src/http/form_file.class.ts

@@ -25,8 +25,21 @@ export class FormFile {
 
     const content = new Uint8Array(buffer);
     const path = `${destination}/${fileName}`;
+    const pathParts = path.split('/');
+
+    pathParts.pop();
 
     try {
+      try {
+        await Deno.mkdir(pathParts.join('/'), {
+          recursive: true,
+        });
+      } catch (error) {
+        if (!(error instanceof Deno.errors.AlreadyExists)) {
+          throw error;
+        }
+      }
+
       await Deno.writeFile(path, content);
     } catch {
       throw new Error(`Cannot upload file ${fileName} to ${destination}`);

src/http/http_request.class.ts

@@ -75,10 +75,21 @@ export class HttpRequest {
         continue;
       }
 
+      if (name in files) {
+        files[name] = [
+          ...(Array.isArray(files[name])
+            ? files[name] as FormFile[]
+            : [files[name]] as FormFile[]),
+          new FormFile(field),
+        ];
+
+        continue;
+      }
+
       if (name.endsWith('[]')) {
         const fieldName = name.slice(0, -2);
 
-        if (!files[fieldName]) {
+        if (!(fieldName in files)) {
           files[fieldName] = [];
         }