#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#ifdef METHOD
#undef METHOD
#endif

#ifdef ref
#undef ref
#endif
#ifdef list
#undef list
#endif
#ifdef do_open
#undef do_open
#endif
#ifdef do_close
#undef do_close
#endif
#ifdef assert
#undef assert
#endif
#ifdef vform
#undef vform
#endif

#include <qpoint.h>
#include <qrect.h>
#include <qregexp.h>
#include <qsize.h>
#include <qstringlist.h>

#include <dcopclient.h>
#include <dcopref.h>
#include <kdatastream.h>
#include <kurl.h>

int intFromSV(SV *data)
{
    if (!SvOK(data))
        return 0;
    if (!SvIOK(data))
        croak("DCOP: Cannot convert to integer");
    return SvIV(data);
}

SV *intToSV(int data, SV * self = 0)
{
    return newSViv(data);
}

uint uintFromSV(SV *data)
{
    if (!SvOK(data))
        return 0;
    if (!SvIOK(data))
        croak("DCOP: Cannot convert to integer");
    return SvIV(data);
}

SV *uintToSV(uint data, SV * self = 0)
{
    return newSViv(data);
}


bool boolFromSV(SV *data)
{
	if (!SvOK(data))
		return false;
	if (SvIOK(data))
		return SvIV(data);
	if (SvPOK(data))
		return QCString(SvPV(data, PL_na)).lower() == "true";
	croak("DCOP: Cannot convert to bool");
}

SV *boolToSV(bool data, SV *self = 0)
{
	return newSViv(data ? 1 : 0);
}

QCString QCStringFromSV(SV *data)
{
    if (!SvOK(data))
        return QCString();
    if (!SvPOK(data))
        croak("DCOP: Cannot convert to QCString");
    return SvPV(data, PL_na);
}

SV *QCStringToSV(const QCString &data, SV * self = 0)
{
    return data.isNull() ? &PL_sv_undef : newSVpv(data.data(), 0);
}

QString QStringFromSV(SV *data)
{
    if (!SvOK(data))
        return QString::null;
    if (!SvPOK(data))
        croak("DCOP: Cannot convert to QString");
    return SvPV(data, PL_na);
}

SV *QStringToSV(const QString &data, SV * self = 0)
{
    return data.isNull() ? &PL_sv_undef : newSVpv((char *)data.latin1(), 0);
}

QCStringList QCStringListFromSV(SV *data)
{
    if (!SvROK(data))
        croak("DCOP: Not reference");
    if (SvTYPE(SvRV(data)) != SVt_PVAV)
        croak("DCOP: Not an array reference");
    QCStringList result;
    for (int i = 0; i <= av_len((AV*)SvRV(data)); i++)
        result.append(QCStringFromSV(av_fetch((AV*)SvRV(data), i, 0)[0]));
    return result;
}

SV *QCStringListToSV(const QCStringList &data, SV * self = 0)
{
    AV *result = newAV();
    for (QCStringList::ConstIterator i = data.begin(); i != data.end(); i++)
        av_push(result, QCStringToSV(*i));
    return newRV((SV*)result);
}

QStringList QStringListFromSV(SV *data)
{
    if (!SvROK(data))
        croak("DCOP: Not reference");
    if (SvTYPE(SvRV(data)) != SVt_PVAV)
        croak("DCOP: Not an array reference");
    QStringList result;
    for (int i = 0; i <= av_len((AV*)SvRV(data)); i++)
        result.append(QCStringFromSV(av_fetch((AV*)SvRV(data), i, 0)[0]));
    return result;
}

SV *QStringListToSV(const QStringList &data, SV * self = 0)
{
    AV *result = newAV();
    for (QStringList::ConstIterator i = data.begin(); i != data.end(); i++)
        av_push(result, QStringToSV(*i));
    return newRV((SV*)result);
}

QPoint QPointFromSV(SV *data)
{
    if (!SvROK(data))
        croak("DCOP: Not reference");
    if (SvTYPE(SvRV(data)) != SVt_PVAV)
        croak("DCOP: Not an array reference");
    if (av_len((AV*)SvRV(data)) != 1)
        croak("DCOP: A QPoint must have exactly 2 components");
    SV **pts = av_fetch((AV*)SvRV(data), 0, 0);
    return QPoint(intFromSV(pts[0]), intFromSV(pts[1]));
}

SV *QPointToSV(const QPoint &data, SV * self = 0)
{
    SV *pts[2] = {
        intToSV(data.x()),
        intToSV(data.y())
    };
    return newRV((SV*)av_make(2, pts));
}

QSize QSizeFromSV(SV *data)
{
    if (!SvROK(data))
        croak("DCOP: Not reference");
    if (SvTYPE(SvRV(data)) != SVt_PVAV)
        croak("DCOP: Not an array reference");
    if (av_len((AV*)SvRV(data)) != 1)
        croak("DCOP: A QSize must have exactly 2 components");
    SV **ext = av_fetch((AV*)SvRV(data), 0, 0);
    return QSize(intFromSV(ext[0]), intFromSV(ext[1]));
}

SV *QSizeToSV(const QSize &data, SV * self = 0)
{
    SV *ext[2] = {
        intToSV(data.width()),
        intToSV(data.height())
    };
    return newRV((SV*)av_make(2, ext));
}

QRect QRectFromSV(SV *data)
{
    if (!SvROK(data))
        croak("DCOP: Not a reference");
    if (SvTYPE(SvRV(data)) != SVt_PVAV)
        croak("DCOP: Not an array reference");
    if (av_len((AV*)SvRV(data)) != 1)
        croak("DCOP: A QRect must have exactly 4 components");
    SV **rc = av_fetch((AV*)SvRV(data), 0, 0);
    return QRect(intFromSV(rc[0]), intFromSV(rc[1]), intFromSV(rc[2]), intFromSV(rc[3]));
}

SV *QRectToSV(const QRect &data, SV * self = 0)
{
    SV *rc[4] = {
        intToSV(data.left()),
        intToSV(data.top()),
        intToSV(data.width()),
        intToSV(data.height())
    };
    return newRV((SV*)av_make(4, rc));
}

KURL KURLFromSV(SV *data)
{
    return KURL(QStringFromSV(data));
}

SV *KURLToSV(const KURL &data, SV * self = 0)
{
    return QStringToSV(data.url());
}

DCOPRef DCOPRefFromSV(SV *data)
{
    if (!sv_isa(data, "DCOP::Object"))
        croak("DCOP: Not a DCOP::Object");
    SV **app = hv_fetch((HV*)SvRV(data), "APP", 3, 0);
    SV **obj = hv_fetch((HV*)SvRV(data), "OBJ", 3, 0);
    return DCOPRef(QCStringFromSV(app[0]), QCStringFromSV(obj[0]));
}

SV *DCOPRefToSV(const DCOPRef &data, SV * self)
{
    SV *ref = newRV((SV*)newHV());
    hv_store((HV*)SvRV(ref), "CLIENT", 6, SvREFCNT_inc(self), 0);
    hv_store((HV*)SvRV(ref), "APP", 3, QCStringToSV(data.app()), 0);
    hv_store((HV*)SvRV(ref), "OBJ", 3, QCStringToSV(data.object()), 0);
    return sv_bless(ref, gv_stashpv("DCOP::Object", 0));
}

# // Yes, defines *are* ugly...
#define CHECK_ARG(t)                \
    if ((*it) == #t)                \
        s << t##FromSV(data[i]);

#define CHECK_REPLY(t)              \
    if (replyType == #t)            \
    {                               \
        t r;                        \
        s >> r;                     \
        return t##ToSV(r, self);    \
    }

#define DATA(func, argn) mapArgs(func, &ST(argn), items - argn)

QByteArray mapArgs(const QCString &func, SV **data, int n)
{
    int p = func.find('('),
        q = func.find(')');
    if (p == -1 || q == -1 || q < p)
        croak("DCOP: Invalid function signature \"%s\"", func.data());
    QStringList types = QStringList::split(',', func.mid(p + 1, q - p - 1));
    QByteArray result;
    QDataStream s(result, IO_WriteOnly);
    QStringList::ConstIterator it = types.begin();
    for (int i = 0; i < n; ++i, ++it)
    {
        if (it == types.end())
            croak("DCOP: Too many (%d) arguments to function \"%s\"", n, func.data());
        CHECK_ARG(int)
        else CHECK_ARG(uint)
        else CHECK_ARG(bool)
        else CHECK_ARG(QCString)
        else CHECK_ARG(QString)
        else CHECK_ARG(QCStringList)
        else CHECK_ARG(QStringList)
        else CHECK_ARG(QPoint)
        else CHECK_ARG(QSize)
        else CHECK_ARG(QRect)
        else CHECK_ARG(KURL)
        else CHECK_ARG(DCOPRef)
        else
            croak("DCOP: Sorry, passing a %s is not implemented", (*it).latin1());
    }
    if (it != types.end())
        croak("DCOP: Too few (%d) arguments to function \"%s\"", n, func.data());
    return result;
}

SV* mapReply(const QCString &replyType, const QByteArray &replyData, SV *self)
{
    if (replyType == "void")
        return sv_newmortal();
    QDataStream s(replyData, IO_ReadOnly);
    CHECK_REPLY(int)
    else CHECK_REPLY(uint)
    else CHECK_REPLY(bool)
    else CHECK_REPLY(QCString)
    else CHECK_REPLY(QString)
    else CHECK_REPLY(QCStringList)
    else CHECK_REPLY(QStringList)
    else CHECK_REPLY(QPoint)
    else CHECK_REPLY(QSize)
    else CHECK_REPLY(QRect)
    else CHECK_REPLY(KURL)
    else CHECK_REPLY(DCOPRef)
    else croak("Sorry, receiving a %s is not implemented", replyType.data());
}

bool isMultiWordType(const QString &type)
{
	return type == "unsigned" || type == "signed" || type == "long";
}

QCString canonicalizeSignature(const QCString &sig)
{
    QCString normal = DCOPClient::normalizeFunctionSignature(sig);
	int p = normal.find('('), q = normal.find(')');
	QCString result = normal.left(p + 1);
	result.remove(0, result.findRev(' ') + 1);

	QStringList params = QStringList::split(',', normal.mid(p + 1, q - p - 1));
	for (QStringList::ConstIterator it = params.begin(); it != params.end(); ++it)
	{
		QStringList words = QStringList::split(' ', (*it).simplifyWhiteSpace());
		for (QStringList::ConstIterator wi = words.begin(); wi != words.end(); ++wi)
			if (!isMultiWordType(*wi))
			{
				result += *wi;
				break;
			}
		if (it != params.fromLast())
			result += ',';
	}
	result += ')';

	return result;
}

MODULE = DCOP           PACKAGE = DCOP

PROTOTYPES: ENABLE

DCOPClient *
DCOPClient::new()
    OUTPUT:
        RETVAL

void
DCOPClient::DESTROY()

bool
DCOPClient::attach()
    OUTPUT:
        RETVAL

bool
DCOPClient::detach()
    OUTPUT:
        RETVAL

bool
DCOPClient::isAttached()
    OUTPUT:
        RETVAL

#if 0
QCString
DCOPClient::registerAs(appId, ...)
        QCString appId
    PREINIT:
        bool addPID = true;
    CODE:
        if (items > 3)
            croak("Usage: DCOP::registerAs(THIS, appId [, addPID])");
        if (items == 3)
            addPID = SvIV(ST(2));
        RETVAL = THIS->registerAs(appId, addPID);
    OUTPUT:
        RETVAL

bool
DCOPClient::isRegistered()
    OUTPUT:
        RETVAL

#endif

QCString
DCOPClient::appId()
    OUTPUT:
        RETVAL

bool
DCOPClient::send(app, obj, func, ...)
        QCString app
        QCString obj
        QCString func
    CODE:
        func = canonicalizeSignature(func);
        RETVAL = THIS->send(app, obj, func, DATA(func, 4));
    OUTPUT:
        RETVAL

SV*
DCOPClient::call(app, obj, func, ...)
        QCString app
        QCString obj
        QCString func
    PPCODE:
        func = canonicalizeSignature(func);
        QCString replyType;
        QByteArray replyData;
        bool success;
        if ((success = THIS->call(app, obj, func, DATA(func, 4), replyType, replyData)))
            PUSHs(mapReply(replyType, replyData, ST(0)));
        else
            PUSHs(&PL_sv_undef);
        if (GIMME_V == G_ARRAY)
            PUSHs(success ? &PL_sv_yes : &PL_sv_no);

SV*
DCOPClient::findObject(app, obj, func, ...)
        QCString app
        QCString obj
        QCString func
    PPCODE:
        func = canonicalizeSignature(func);
        QCString foundApp;
        QCString foundObj;
        if (!THIS->findObject(app, obj, func, DATA(func, 4), foundApp, foundObj))
            XSRETURN_UNDEF;
        PUSHs(QCStringToSV(foundApp));
        PUSHs(QCStringToSV(foundObj));

void
DCOPClient::emitDCOPSignal(obj, signal, ...)
        QCString obj
        QCString signal
    CODE:
        signal = canonicalizeSignature(signal);
        THIS->emitDCOPSignal(obj, signal, DATA(signal, 3));

bool
DCOPClient::isApplicationRegistered(app)
        QCString app
    OUTPUT:
        RETVAL

QCStringList
DCOPClient::registeredApplications()
    OUTPUT:
        RETVAL

QCStringList
DCOPClient::remoteObjects(app)
        QCString app
    OUTPUT:
        RETVAL

QCStringList
DCOPClient::remoteInterfaces(app, obj)
        QCString app
        QCString obj
    OUTPUT:
        RETVAL

QCStringList
DCOPClient::remoteFunctions(app, obj)
        QCString app
        QCString obj
    OUTPUT:
        RETVAL

static QCString
DCOPClient::normalizeFunctionSignature(sig)
        QCString sig
    OUTPUT:
        RETVAL

QCString
canonicalizeSignature(sig)
        QCString sig
    CODE:
        RETVAL = canonicalizeSignature(sig);
    OUTPUT:
        RETVAL