Implement `FormData` (#2051)

* Backport std::forward change

* Implement `FormData`

* Fix io_darwin headers issue

* Implement `Blob` support in FormData

* Add test for file upload

* Fix bug with Blob not reading Content-Type

* Finish implementing FormData

* Add FormData to types

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/src/bun.js/bindings/bindings.cpp b/src/bun.js/bindings/bindings.cpp
index 02a79c1b0..aa8a28601 100644
--- a/src/bun.js/bindings/bindings.cpp
+++ b/src/bun.js/bindings/bindings.cpp
@@ -85,6 +85,10 @@
 #include "JavaScriptCore/HashMapImpl.h"
 #include "JavaScriptCore/HashMapImplInlines.h"
 
+#include "DOMFormData.h"
+#include "JSDOMFormData.h"
+#include "ZigGeneratedClasses.h"
+
 template<typename UWSResponse>
 static void copyToUWS(WebCore::FetchHeaders* headers, UWSResponse* res)
 {
@@ -3726,4 +3730,53 @@ extern "C" void JSC__JSGlobalObject__queueMicrotaskJob(JSC__JSGlobalObject* arg0
         JSC::JSValue::decode(JSValue2),
         JSC::JSValue::decode(JSValue3),
         JSC::JSValue::decode(JSValue4));
+}
+
+#pragma mark - WebCore::DOMFormData
+
+CPP_DECL void WebCore__DOMFormData__append(WebCore__DOMFormData* arg0, ZigString* arg1, ZigString* arg2)
+{
+    arg0->append(toStringCopy(*arg1), toStringCopy(*arg2));
+}
+
+CPP_DECL void WebCore__DOMFormData__appendBlob(WebCore__DOMFormData* arg0, JSC__JSGlobalObject* arg1, ZigString* arg2, void* blobValueInner, ZigString* fileName)
+{
+    RefPtr<Blob> blob = WebCore::Blob::create(blobValueInner);
+    arg0->append(toStringCopy(*arg2), blob, toStringCopy(*fileName));
+}
+CPP_DECL size_t WebCore__DOMFormData__count(WebCore__DOMFormData* arg0)
+{
+    return arg0->count();
+}
+
+extern "C" void DOMFormData__toQueryString(
+    DOMFormData* formData,
+    void* ctx,
+    void (*callback)(void* ctx, ZigString* encoded))
+{
+    auto str = formData->toURLEncodedString();
+    ZigString encoded = toZigString(str);
+    callback(ctx, &encoded);
+}
+
+CPP_DECL JSC__JSValue WebCore__DOMFormData__createFromURLQuery(JSC__JSGlobalObject* arg0, ZigString* arg1)
+{
+    JSC::VM& vm = arg0->vm();
+    Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(arg0);
+    // don't need to copy the string because it internally does.
+    auto formData = DOMFormData::create(globalObject->scriptExecutionContext(), toString(*arg1));
+    return JSValue::encode(toJSNewlyCreated(arg0, globalObject, WTFMove(formData)));
+}
+
+CPP_DECL JSC__JSValue WebCore__DOMFormData__create(JSC__JSGlobalObject* arg0)
+{
+    JSC::VM& vm = arg0->vm();
+    Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(arg0);
+    auto formData = DOMFormData::create(globalObject->scriptExecutionContext());
+    return JSValue::encode(toJSNewlyCreated(arg0, globalObject, WTFMove(formData)));
+}
+
+CPP_DECL WebCore__DOMFormData* WebCore__DOMFormData__fromJS(JSC__JSValue JSValue1)
+{
+    return WebCoreCast<WebCore::JSDOMFormData, WebCore__DOMFormData>(JSValue1);
 }
\ No newline at end of file