//  native void socketConnect(InetAddress address, int port, int timeout)
//  throws IOException;
func psi_socketConnect(frame *rtda.Frame) {
	vars := frame.LocalVars()
	this := vars.GetThis()
	address := vars.GetRef(1)
	port := vars.Get(2)

	holder := address.GetFieldValue("holder", "Ljava/net/InetAddress$InetAddressHolder;").(*rtc.Obj)

	//fmt.Println(address.Class().GetInstanceMethod("getHostAddress", "()Ljava/lang/String;").NativeMethod())
	add := holder.GetFieldValue("address", "I").(int32)
	b := make([]byte, 4)
	binary.BigEndian.PutUint32(b, uint32(add))
	laddr := fmt.Sprintf("%d.%d.%d.%d:%d", b[0], b[1], b[2], b[3], port)

	conn, err := net.Dial("tcp", laddr)

	if err != nil {
		frame.Thread().ThrowIOException(err.Error())
	}
	//TODO what ? timeout how to implement ?
	_timeout := vars.GetInt(3)
	if _timeout > 0 {
		conn.SetDeadline(time.Now().Add(time.Duration(_timeout) * time.Millisecond))
	}

	fdObj := this.GetFieldValue("fd", "Ljava/io/FileDescriptor;").(*rtc.Obj)
	fdObj.SetExtra(conn)
}

// public native int getModifiers();
// ()I
func getModifiers(frame *rtda.Frame) {
	class := _popClass(frame)
	modifiers := class.GetAccessFlags()

	stack := frame.OperandStack()
	stack.PushInt(int32(modifiers))
}

func (self *lreturn) Execute(frame *rtda.Frame) {
	thread := frame.Thread()
	currentFrame := thread.PopFrame()
	invokerFrame := thread.TopFrame()
	val := currentFrame.OperandStack().PopLong()
	invokerFrame.OperandStack().PushLong(val)
}

func (self *dadd) Execute(frame *rtda.Frame) {
	stack := frame.OperandStack()
	v1 := stack.PopDouble()
	v2 := stack.PopDouble()
	result := v1 + v2
	stack.PushDouble(result)
}

func (self *lxor) Execute(frame *rtda.Frame) {
	stack := frame.OperandStack()
	v1 := stack.PopLong()
	v2 := stack.PopLong()
	result := v1 ^ v2
	stack.PushLong(result)
}

// private native long getUptime0();
// ()J
func getUptime0(frame *rtda.Frame) {
	// todo
	uptime := int64(0)

	stack := frame.OperandStack()
	stack.PushLong(uptime)
}

// private static native String getVersion0();
// ()Ljava/lang/String;
func getVersion0(frame *rtda.Frame) {
	// todo
	version := rtda.JString("0")

	stack := frame.OperandStack()
	stack.PushRef(version)
}

// public static native void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)
// (Ljava/lang/Object;ILjava/lang/Object;II)V
func arraycopy(frame *rtda.Frame) {
	vars := frame.LocalVars()
	src := vars.GetRef(0)
	srcPos := vars.GetInt(1)
	dest := vars.GetRef(2)
	destPos := vars.GetInt(3)
	length := vars.GetInt(4)

	// NullPointerException
	if src == nil || dest == nil {
		panic("NPE") // todo
	}
	// ArrayStoreException
	if !checkArrayCopy(src, dest) {
		panic("ArrayStoreException")
	}
	// IndexOutOfBoundsException
	if srcPos < 0 || destPos < 0 || length < 0 ||
		srcPos+length > rtc.ArrayLength(src) ||
		destPos+length > rtc.ArrayLength(dest) {

		panic("IndexOutOfBoundsException") // todo
	}

	rtc.ArrayCopy(src, dest, srcPos, destPos, length)
}

// private static native int getEntryFlag(long jzentry);
// (J)I
func getEntryFlag(frame *rtda.Frame) {
	entry := _getEntryPop(frame)
	flag := int32(entry.Flags)

	stack := frame.OperandStack()
	stack.PushInt(flag)
}

// private static native void setIn0(InputStream in);
// (Ljava/io/InputStream;)V
func setIn0(frame *rtda.Frame) {
	vars := frame.LocalVars()
	in := vars.GetRef(0)

	sysClass := frame.Method().Class()
	sysClass.SetStaticValue("in", "Ljava/io/InputStream;", in)
}

// private static native void setOut0(PrintStream out);
// (Ljava/io/PrintStream;)V
func setOut0(frame *rtda.Frame) {
	vars := frame.LocalVars()
	out := vars.GetRef(0)

	sysClass := frame.Method().Class()
	sysClass.SetStaticValue("out", "Ljava/io/PrintStream;", out)
}

// private static native void setErr0(PrintStream err);
// (Ljava/io/PrintStream;)V
func setErr0(frame *rtda.Frame) {
	vars := frame.LocalVars()
	err := vars.GetRef(0)

	sysClass := frame.Method().Class()
	sysClass.SetStaticValue("err", "Ljava/io/PrintStream;", err)
}

func (self *frem) Execute(frame *rtda.Frame) {
	stack := frame.OperandStack()
	v2 := stack.PopFloat()
	v1 := stack.PopFloat()
	result := float32(math.Mod(float64(v1), float64(v2))) // todo
	stack.PushFloat(result)
}

func (self *swap) Execute(frame *rtda.Frame) {
	stack := frame.OperandStack()
	val1 := stack.PopSlot()
	val2 := stack.PopSlot()
	stack.PushSlot(val1)
	stack.PushSlot(val2)
}

// private static native long getEntryCrc(long jzentry);
// (J)J
func getEntryCrc(frame *rtda.Frame) {
	entry := _getEntryPop(frame)
	crc := int64(entry.CRC32)

	stack := frame.OperandStack()
	stack.PushLong(crc)
}

// private static native int findSignal(String string);
// (Ljava/lang/String;)I
func findSignal(frame *rtda.Frame) {
	vars := frame.LocalVars()
	vars.GetRef(0) // name

	stack := frame.OperandStack()
	stack.PushInt(0) // todo
}

// private static native long getEntrySize(long jzentry);
// (J)J
func getEntrySize(frame *rtda.Frame) {
	entry := _getEntryPop(frame)
	size := int64(entry.UncompressedSize64)

	stack := frame.OperandStack()
	stack.PushLong(size)
}

// public native long getStartupTime();
// ()J
func getStartupTime(frame *rtda.Frame) {
	// todo
	startupTime := int64(0)

	stack := frame.OperandStack()
	stack.PushLong(startupTime)
}

func _getEntryPop(frame *rtda.Frame) *gozip.File {
	vars := frame.LocalVars()
	jzentry := vars.GetLong(0)

	entry := getEntryFile(jzentry)
	return entry
}

// public static native void set(Object array, int index, Object value)
//        throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
// (Ljava/lang/Object;ILjava/lang/Object;)V
func set(frame *rtda.Frame) {
	vars := frame.LocalVars()
	arr := vars.GetRef(0)
	index := vars.GetInt(1)
	value := vars.GetRef(2)

	if arr == nil {
		frame.Thread().ThrowNPE()
		return
	}
	if !arr.IsArray() {
		frame.Thread().ThrowIllegalArgumentException("Argument is not an array")
		return
	}

	if index < 0 || index >= rtc.ArrayLength(arr) {
		frame.Thread().ThrowArrayIndexOutOfBoundsExceptionNoMsg()
		return
	}

	if !arr.IsPrimitiveArray() {
		arr.Refs()[index] = value
		return
	}

	//TODO Consistent with the current need to determine whether the type and source type
	// Such as:
	// [I
	// java/lang/Integer
	// frame.Thread().ThrowIllegalArgumentException("argument type mismatch")

	// primitive array
	primitiveDescriptorStr := arr.Class().Name()[1:]
	if primitiveDescriptorStr != value.GetPrimitiveDescriptor() {
		frame.Thread().ThrowIllegalArgumentException("argument type mismatch")
		return
	}

	unboxed := box.Unbox(value, primitiveDescriptorStr)

	primitiveDescriptor := arr.Class().Name()[1]
	switch primitiveDescriptor {
	case 'Z':
		arr.Booleans()[index] = int8(unboxed.(int32))
	case 'B':
		arr.Bytes()[index] = int8(unboxed.(int32))
	case 'C':
		arr.Chars()[index] = uint16(unboxed.(int32))
	case 'S':
		arr.Shorts()[index] = int16(unboxed.(int32))
	case 'I':
		arr.Ints()[index] = unboxed.(int32)
	case 'J':
		arr.Longs()[index] = unboxed.(int64)
	case 'F':
		arr.Floats()[index] = unboxed.(float32)
	case 'D':
		arr.Doubles()[index] = unboxed.(float64)
	}
}