// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/renderer/extensions/send_request_natives.h"

#include "base/json/json_reader.h"
#include "content/public/renderer/v8_value_converter.h"
#include "chrome/renderer/extensions/request_sender.h"

using content::V8ValueConverter;

namespace extensions {

SendRequestNatives::SendRequestNatives(Dispatcher* dispatcher,
                                       RequestSender* request_sender,
                                       ChromeV8Context* context)
    : ChromeV8Extension(dispatcher, context->v8_context()),
      request_sender_(request_sender),
      context_(context) {
  RouteFunction("GetNextRequestId",
                base::Bind(&SendRequestNatives::GetNextRequestId,
                           base::Unretained(this)));
  RouteFunction("StartRequest",
                base::Bind(&SendRequestNatives::StartRequest,
                           base::Unretained(this)));
  RouteFunction("GetGlobal",
                base::Bind(&SendRequestNatives::GetGlobal,
                           base::Unretained(this)));
}

v8::Handle<v8::Value> SendRequestNatives::GetNextRequestId(
    const v8::Arguments& args) {
  static int next_request_id = 0;
  return v8::Integer::New(next_request_id++);
}

// Starts an API request to the browser, with an optional callback.  The
// callback will be dispatched to EventBindings::HandleResponse.
v8::Handle<v8::Value> SendRequestNatives::StartRequest(
    const v8::Arguments& args) {
  std::string name = *v8::String::AsciiValue(args[0]);
  int request_id = args[2]->Int32Value();
  bool has_callback = args[3]->BooleanValue();
  bool for_io_thread = args[4]->BooleanValue();
  bool preserve_null_in_objects = args[5]->BooleanValue();

  scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());

  // See http://crbug.com/149880. The context menus APIs relies on this, but
  // we shouldn't really be doing it (e.g. for the sake of the storage API).
  converter->SetFunctionAllowed(true);

  if (!preserve_null_in_objects)
    converter->SetStripNullFromObjects(true);

  scoped_ptr<Value> value_args(converter->FromV8Value(args[1], v8_context()));
  if (!value_args.get() || !value_args->IsType(Value::TYPE_LIST)) {
    NOTREACHED() << "Unable to convert args passed to StartRequest";
    return v8::Undefined();
  }

  request_sender_->StartRequest(
      context_, name, request_id, has_callback, for_io_thread,
      static_cast<ListValue*>(value_args.get()));
  return v8::Undefined();
}

v8::Handle<v8::Value> SendRequestNatives::GetGlobal(const v8::Arguments& args) {
  CHECK_EQ(1, args.Length());
  CHECK(args[0]->IsObject());
  return v8::Handle<v8::Object>::Cast(args[0])->CreationContext()->Global();
}

}  // namespace extensions