#include "include/veilid/veilid_plugin.h"

// This must be included before many other Windows headers.
#include <windows.h>

// For getPlatformVersion; remove unless needed for your plugin implementation.
#include <VersionHelpers.h>

#include <flutter/method_channel.h>
#include <flutter/plugin_registrar_windows.h>
#include <flutter/standard_method_codec.h>

#include <map>
#include <memory>
#include <sstream>

namespace
{

  class VeilidPlugin : public flutter::Plugin
  {
  public:
    static void RegisterWithRegistrar(flutter::PluginRegistrarWindows *registrar);

    VeilidPlugin();

    virtual ~VeilidPlugin();

  private:
    // Called when a method is called on this plugin's channel from Dart.
    void HandleMethodCall(
        const flutter::MethodCall<flutter::EncodableValue> &method_call,
        std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result);
  };

  // static
  void VeilidPlugin::RegisterWithRegistrar(
      flutter::PluginRegistrarWindows *registrar)
  {
    auto channel =
        std::make_unique<flutter::MethodChannel<flutter::EncodableValue>>(
            registrar->messenger(), "veilid",
            &flutter::StandardMethodCodec::GetInstance());

    auto plugin = std::make_unique<VeilidPlugin>();

    channel->SetMethodCallHandler(
        [plugin_pointer = plugin.get()](const auto &call, auto result)
        {
          plugin_pointer->HandleMethodCall(call, std::move(result));
        });

    registrar->AddPlugin(std::move(plugin));
  }

  VeilidPlugin::VeilidPlugin() {}

  VeilidPlugin::~VeilidPlugin() {}

  void VeilidPlugin::HandleMethodCall(
      const flutter::MethodCall<flutter::EncodableValue> &method_call,
      std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result)
  {
    // if (method_call.method_name().compare("getPlatformVersion") == 0) {
    //   std::ostringstream version_stream;
    //   version_stream << "Windows ";
    //   if (IsWindows10OrGreater()) {
    //     version_stream << "10+";
    //   } else if (IsWindows8OrGreater()) {
    //     version_stream << "8";
    //   } else if (IsWindows7OrGreater()) {
    //     version_stream << "7";
    //   }
    //   result->Success(flutter::EncodableValue(version_stream.str()));
    // } else {
    result->NotImplemented();
    // }
  }

} // namespace

void VeilidPluginRegisterWithRegistrar(
    FlutterDesktopPluginRegistrarRef registrar)
{
  VeilidPlugin::RegisterWithRegistrar(
      flutter::PluginRegistrarManager::GetInstance()
          ->GetRegistrar<flutter::PluginRegistrarWindows>(registrar));
}