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#include <stdlib.h>
#include <stdio.h>

#include "gpu/pgl/pgl.h"

#if defined(INDEPENDENT_PLUGIN)
#include <iostream>
#define LOG(x) std::cerr
#else
#include "base/logging.h"
#include "base/string_util.h"
#endif
#include "base/stringprintf.h"
#include "third_party/npapi/bindings/nphostapi.h"
#include "webkit/tools/pepper_test_plugin/plugin_object.h"
#include "webkit/tools/pepper_test_plugin/event_handler.h"

#if __GNUC__ >= 4
#define EXPORT __attribute__ ((visibility("default")))
#elif defined(_MSC_VER)
#define EXPORT __declspec(dllexport)
#endif

namespace {

void Log(NPP instance, const char* format, ...) {
  va_list args;
  va_start(args, format);
  std::string message("PLUGIN: ");
#if defined(INDEPENDENT_PLUGIN)
  char msgbuf[100];
  vsnprintf(msgbuf, sizeof(msgbuf), format, args);
#else
  base::StringAppendV(&message, format, args);
#endif
  va_end(args);

  NPObject* window_object = 0;
  NPError error = browser->getvalue(instance, NPNVWindowNPObject,
                                    &window_object);
  if (error != NPERR_NO_ERROR) {
    LOG(ERROR) << "Failed to retrieve window object while logging: "
               << message;
    return;
  }

  NPVariant console_variant;
  if (!browser->getproperty(instance, window_object,
                            browser->getstringidentifier("console"),
                            &console_variant)) {
    LOG(ERROR) << "Failed to retrieve console object while logging: "
               << message;
    browser->releaseobject(window_object);
    return;
  }

  NPObject* console_object = NPVARIANT_TO_OBJECT(console_variant);

  NPVariant message_variant;
  STRINGZ_TO_NPVARIANT(message.c_str(), message_variant);

  NPVariant result;
  if (!browser->invoke(instance, console_object,
                       browser->getstringidentifier("log"),
                       &message_variant, 1, &result)) {
    fprintf(stderr, "Failed to invoke console.log while logging: %s\n",
            message.c_str());
    browser->releaseobject(console_object);
    browser->releaseobject(window_object);
    return;
  }

  browser->releasevariantvalue(&result);
  browser->releaseobject(console_object);
  browser->releaseobject(window_object);
}

}  // namespace

// Plugin entry points
extern "C" {

EXPORT NPError API_CALL NP_Initialize(NPNetscapeFuncs* browser_funcs
#if defined(OS_POSIX) && !defined(OS_MACOSX)
                            , NPPluginFuncs* plugin_funcs
#endif
                            );
EXPORT NPError API_CALL NP_GetEntryPoints(NPPluginFuncs* plugin_funcs);

EXPORT void API_CALL NP_Shutdown() {
#if !defined(INDEPENDENT_PLUGIN)
  pglTerminate();
#endif
}

#if defined(OS_POSIX) && !defined(OS_MACOSX)
EXPORT NPError API_CALL NP_GetValue(NPP instance,
                                    NPPVariable variable,
                                    void* value);
EXPORT const char* API_CALL NP_GetMIMEDescription();
#endif

}  // extern "C"

// Plugin entry points
EXPORT NPError API_CALL NP_Initialize(NPNetscapeFuncs* browser_funcs
#if defined(OS_POSIX) && !defined(OS_MACOSX)
                            , NPPluginFuncs* plugin_funcs
#endif
                            ) {
  browser = browser_funcs;
#if !defined(INDEPENDENT_PLUGIN)
  pglInitialize();
#endif
#if defined(OS_POSIX) && !defined(OS_MACOSX)
  return NP_GetEntryPoints(plugin_funcs);
#else
  return NPERR_NO_ERROR;
#endif
}

// Entrypoints -----------------------------------------------------------------

NPError API_CALL NP_GetEntryPoints(NPPluginFuncs* plugin_funcs) {
  plugin_funcs->version = 11;
  plugin_funcs->size = sizeof(plugin_funcs);
  plugin_funcs->newp = NPP_New;
  plugin_funcs->destroy = NPP_Destroy;
  plugin_funcs->setwindow = NPP_SetWindow;
  plugin_funcs->newstream = NPP_NewStream;
  plugin_funcs->destroystream = NPP_DestroyStream;
  plugin_funcs->asfile = NPP_StreamAsFile;
  plugin_funcs->writeready = NPP_WriteReady;
  plugin_funcs->write = (NPP_WriteProcPtr)NPP_Write;
  plugin_funcs->print = NPP_Print;
  plugin_funcs->event = NPP_HandleEvent;
  plugin_funcs->urlnotify = NPP_URLNotify;
  plugin_funcs->getvalue = NPP_GetValue;
  plugin_funcs->setvalue = NPP_SetValue;

  return NPERR_NO_ERROR;
}

NPError NPP_New(NPMIMEType pluginType,
                NPP instance,
                uint16 mode,
                int16 argc, char* argn[], char* argv[],
                NPSavedData* saved) {
  if (browser->version >= 14) {
    PluginObject* obj = reinterpret_cast<PluginObject*>(
        browser->createobject(instance, PluginObject::GetPluginClass()));
    instance->pdata = obj;
    event_handler = new EventHandler(instance);

    obj->New(pluginType, argc, argn, argv);
  }

  return NPERR_NO_ERROR;
}

NPError NPP_Destroy(NPP instance, NPSavedData** save) {
  PluginObject* obj = static_cast<PluginObject*>(instance->pdata);
  if (obj)
    browser->releaseobject(obj->header());

  fflush(stdout);
  return NPERR_NO_ERROR;
}

NPError NPP_SetWindow(NPP instance, NPWindow* window) {
  PluginObject* obj = static_cast<PluginObject*>(instance->pdata);
  if (obj)
    obj->SetWindow(*window);
  return NPERR_NO_ERROR;
}

NPError NPP_NewStream(NPP instance,
                      NPMIMEType type,
                      NPStream* stream,
                      NPBool seekable,
                      uint16* stype) {
  *stype = NP_ASFILEONLY;
  return NPERR_NO_ERROR;
}

NPError NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason) {
  return NPERR_NO_ERROR;
}

void NPP_StreamAsFile(NPP instance, NPStream* stream, const char* fname) {
}

int32 NPP_Write(NPP instance,
                NPStream* stream,
                int32 offset,
                int32 len,
                void* buffer) {
  return 0;
}

int32 NPP_WriteReady(NPP instance, NPStream* stream) {
  return 0;
}

void NPP_Print(NPP instance, NPPrint* platformPrint) {
}

int16 NPP_HandleEvent(NPP instance, void* event) {
  return event_handler->handle(event);
}

void NPP_URLNotify(NPP instance, const char* url, NPReason reason,
                   void* notify_data) {
  PluginObject* obj = static_cast<PluginObject*>(instance->pdata);
}

NPError NPP_GetValue(NPP instance, NPPVariable variable, void* value) {
  NPError err = NPERR_NO_ERROR;

  switch (variable) {
#if defined(OS_POSIX) && !defined(OS_MACOSX)
    case NPPVpluginNameString:
      *((const char**)value) = "Pepper Test PlugIn";
      break;
    case NPPVpluginDescriptionString:
      *((const char**)value) = "Simple Pepper plug-in for manual testing.";
      break;
    case NPPVpluginNeedsXEmbed:
      *((NPBool*)value) = TRUE;
      break;
#endif
    case NPPVpluginScriptableNPObject: {
      void** v = (void**)value;
      PluginObject* obj = static_cast<PluginObject*>(instance->pdata);
      // Return value is expected to be retained
      browser->retainobject((NPObject*)obj);
      *v = obj;
      break;
    }
    default:
      fprintf(stderr, "Unhandled variable to NPP_GetValue\n");
      err = NPERR_GENERIC_ERROR;
      break;
  }

  return err;
}

NPError NPP_SetValue(NPP instance, NPNVariable variable, void* value) {
  return NPERR_GENERIC_ERROR;
}

#if defined(OS_POSIX) && !defined(OS_MACOSX)
NPError API_CALL NP_GetValue(NPP instance, NPPVariable variable, void* value) {
  return NPP_GetValue(instance, variable, value);
}

const char* API_CALL NP_GetMIMEDescription() {
  return "pepper-application/x-pepper-test-plugin::Pepper Test";
}
#endif