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#import "mcp.h"
#import "PluginObject.h"

NPNetscapeFuncs* browser;

NPError		NPP_New(NPMIMEType pluginType, NPP instance, uint16 mode, int16 argc, char* argn[], char* argv[], NPSavedData* saved);
NPError		NPP_Destroy(NPP instance, NPSavedData** save);
NPError		NPP_SetWindow(NPP instance, NPWindow* window);
NPError		NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream, NPBool seekable, uint16* stype);
NPError		NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason);
int32		NPP_WriteReady(NPP instance, NPStream* stream);
int32		NPP_Write(NPP instance, NPStream* stream, int32 offset, int32 len, void* buffer);
void		NPP_StreamAsFile(NPP instance, NPStream* stream, const char* fname);
void		NPP_Print(NPP instance, NPPrint* platformPrint);
int16		NPP_HandleEvent(NPP instance, void* event);
void		NPP_URLNotify(NPP instance, const char* URL, NPReason reason, void* notifyData);
NPError		NPP_GetValue(NPP instance, NPPVariable variable, void *value);
NPError		NPP_SetValue(NPP instance, NPNVariable variable, void *value);

#pragma export on
// Mach-o entry points
NPError NP_Initialize(NPNetscapeFuncs *browserFuncs);
NPError NP_GetEntryPoints(NPPluginFuncs *pluginFuncs);
void NP_Shutdown(void);
// For compatibility with CFM browsers.
int main(NPNetscapeFuncs *browserFuncs, NPPluginFuncs *pluginFuncs, NPP_ShutdownProcPtr *shutdown);
#pragma export off


typedef void (* FunctionPointer) (void);
typedef void (* TransitionVector) (void);
static FunctionPointer functionPointerForTVector(TransitionVector);
static TransitionVector tVectorForFunctionPointer(FunctionPointer);

// Mach-o entry points
NPError NP_Initialize(NPNetscapeFuncs* browserFuncs)
{
    browser = browserFuncs;
    return NPERR_NO_ERROR;
}

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

    return NPERR_NO_ERROR;
}

void NP_Shutdown(void)
{

}
 
// For compatibility with CFM browsers.
int main(NPNetscapeFuncs *browserFuncs, NPPluginFuncs *pluginFuncs, NPP_ShutdownProcPtr *shutdown)
{
    browser = malloc(sizeof(NPNetscapeFuncs));
    bzero(browser, sizeof(NPNetscapeFuncs));
    
    browser->size = browserFuncs->size;
    browser->version = browserFuncs->version;
    
    // Since this is a mach-o plug-in and the browser is CFM because it is calling main, translate
    // our function points into TVectors so the browser can call them.
    browser->geturl = (NPN_GetURLProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->geturl);
    browser->posturl = (NPN_PostURLProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->posturl);
    browser->requestread = (NPN_RequestReadProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->requestread);
    browser->newstream = (NPN_NewStreamProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->newstream);
    browser->write = (NPN_WriteProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->write);
    browser->destroystream = (NPN_DestroyStreamProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->destroystream);
    browser->status = (NPN_StatusProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->status);
    browser->uagent = (NPN_UserAgentProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->uagent);
    browser->memalloc = (NPN_MemAllocProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->memalloc);
    browser->memfree = (NPN_MemFreeProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->memfree);
    browser->memflush = (NPN_MemFlushProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->memflush);
    browser->reloadplugins = (NPN_ReloadPluginsProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->reloadplugins);
    browser->geturlnotify = (NPN_GetURLNotifyProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->geturlnotify);
    browser->posturlnotify = (NPN_PostURLNotifyProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->posturlnotify);
    browser->getvalue = (NPN_GetValueProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getvalue);
    browser->setvalue = (NPN_SetValueProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->setvalue);
    browser->invalidaterect = (NPN_InvalidateRectProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->invalidaterect);
    browser->invalidateregion = (NPN_InvalidateRegionProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->invalidateregion);
    browser->forceredraw = (NPN_ForceRedrawProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->forceredraw);
    browser->getJavaEnv = (NPN_GetJavaEnvProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getJavaEnv);
    browser->getJavaPeer = (NPN_GetJavaPeerProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getJavaPeer);
    
    if (browser->version >= 14) {
		// These functions are not yet supported in CFM browers like Netscape.
		// In the future, the versions of the vectors should be checked before accessing symbols.
		browser->releasevariantvalue = (NPN_ReleaseVariantValueProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->releasevariantvalue);
		browser->getstringidentifier = (NPN_GetStringIdentifierProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getstringidentifier);
		browser->getstringidentifiers = (NPN_GetStringIdentifiersProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getstringidentifiers);
		browser->getintidentifier = (NPN_GetIntIdentifierProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getintidentifier);
		browser->identifierisstring = (NPN_IdentifierIsStringProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->identifierisstring);
		browser->utf8fromidentifier = (NPN_UTF8FromIdentifierProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->utf8fromidentifier);
		browser->createobject = (NPN_CreateObjectProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->createobject);
		browser->retainobject = (NPN_RetainObjectProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->retainobject);
		browser->releaseobject = (NPN_ReleaseObjectProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->releaseobject);
//		browser->call = functionPointerForTVector((TransitionVector)browserFuncs->call);
//		browser->evalute = functionPointerForTVector((TransitionVector)browserFuncs->evalute);
		browser->getproperty = (NPN_GetPropertyProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->getproperty);
		browser->setproperty = (NPN_SetPropertyProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->setproperty);
		browser->removeproperty = (NPN_RemovePropertyProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->removeproperty);
		browser->setexception = (NPN_SetExceptionProcPtr)functionPointerForTVector((TransitionVector)browserFuncs->setexception);
	}
	
    pluginFuncs->version = 11;
    pluginFuncs->size = sizeof(pluginFuncs);
    pluginFuncs->newp = (NPP_NewProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_New);
    pluginFuncs->destroy = (NPP_DestroyProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_Destroy);
    pluginFuncs->setwindow = (NPP_SetWindowProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_SetWindow);
    pluginFuncs->newstream = (NPP_NewStreamProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_NewStream);
    pluginFuncs->destroystream = (NPP_DestroyStreamProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_DestroyStream);
    pluginFuncs->asfile = (NPP_StreamAsFileProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_StreamAsFile);
    pluginFuncs->writeready = (NPP_WriteReadyProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_WriteReady);
    pluginFuncs->write = (NPP_WriteProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_Write);
    pluginFuncs->print = (NPP_PrintProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_Print);
    pluginFuncs->event = (NPP_HandleEventProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_HandleEvent);
    pluginFuncs->urlnotify = (NPP_URLNotifyProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_URLNotify);
    pluginFuncs->getvalue = (NPP_GetValueProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_GetValue);
    pluginFuncs->setvalue = (NPP_SetValueProcPtr)tVectorForFunctionPointer((FunctionPointer)NPP_SetValue);
    
    *shutdown = (NPP_ShutdownProcPtr)tVectorForFunctionPointer((FunctionPointer)NP_Shutdown);
    
    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)
        instance->pdata = browser->createobject (instance, getPluginClass());

    return NPERR_NO_ERROR;
}

NPError NPP_Destroy(NPP instance, NPSavedData** save)
{
    return NPERR_NO_ERROR;
}

NPError NPP_SetWindow(NPP instance, NPWindow* window)
{
    PluginObject *obj = instance->pdata;
    
    // Do nothing if browser didn't support NPN_CreateObject which would have created the PluginObject.
    if (obj != NULL) {
//        obj->window = window;
    }
    return NPERR_NO_ERROR;
}
 

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

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

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

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

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

}

void NPP_Print(NPP instance, NPPrint* platformPrint)
{

}

int16 NPP_HandleEvent(NPP instance, void* event)
{
    return 0;
}

void NPP_URLNotify(NPP instance, const char* url, NPReason reason, void* notifyData)
{

}

NPError NPP_GetValue(NPP instance, NPPVariable variable, void *value)
{
    if (variable == NPPVpluginScriptableNPObject) {
        void **v = (void **)value;
        PluginObject *obj = instance->pdata;
        // Increase reference count
		obj->referenceCount++;
		*v = obj;
        return NPERR_NO_ERROR;
    }
    return NPERR_GENERIC_ERROR;
}

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

// function pointer converters

FunctionPointer functionPointerForTVector(TransitionVector tvp)
{
    const uint32 temp[6] = {0x3D800000, 0x618C0000, 0x800C0000, 0x804C0004, 0x7C0903A6, 0x4E800420};
    uint32 *newGlue = NULL;
    
    if (tvp != NULL) {
        newGlue = (uint32 *)malloc(sizeof(temp));
        if (newGlue != NULL) {
            unsigned i;
            for (i = 0; i < 6; i++) newGlue[i] = temp[i];
            newGlue[0] |= ((UInt32)tvp >> 16);
            newGlue[1] |= ((UInt32)tvp & 0xFFFF);
            MakeDataExecutable(newGlue, sizeof(temp));
        }
    }
    
    return (FunctionPointer)newGlue;
}

TransitionVector tVectorForFunctionPointer(FunctionPointer fp)
{
    FunctionPointer *newGlue = NULL;
    if (fp != NULL) {
        newGlue = (FunctionPointer *)malloc(2 * sizeof(FunctionPointer));
        if (newGlue != NULL) {
            newGlue[0] = fp;
            newGlue[1] = NULL;
        }
    }
    return (TransitionVector)newGlue;
}