#include <QTest>
#include <QSignalSpy>
#include <tuple>
#include <iostream>
#include <QDebug>
#include "../src/BaseQObject.h"
#include "../src/DynamicQObject.h"

// Templates that convers a T to a string
template <typename T>
struct TypeName
{
    static const char* Get() { return typeid(T).name(); }
};
template <> struct TypeName<int> { static const char* Get() { return "int"; } };
template <> struct TypeName<QString> { static const char* Get() { return "QString"; } };
template <> struct TypeName<bool> { static const char* Get() { return "bool"; } };
template <> struct TypeName<QVariant> { static const char* Get() { return "QVariant"; } };

class TestDynamicQObject : public QObject
{
    Q_OBJECT

private slots:
    void memoryLeakTest() {
        DynamicQObject<QObject> dynamicQObject;
        BaseQObject baseQObject;
    }

    void testRegisterSignal() {
        DynamicQObject<QObject> dynamicQObject;
        int index;
        dynamicQObject.registerSignal("fooSignal", {}, index);
        QCOMPARE(index != -1, true);

        QSignalSpy signalSpy(&dynamicQObject, SIGNAL(fooSignal()));
        dynamicQObject.emitSignal("fooSignal", {});
        QCOMPARE(signalSpy.count(), 1);
    }

    void testSlotExecution() {
        testSlotExecutionForType<int>(10);
        testSlotExecutionForType<QString>("foo");
        testSlotExecutionForType<bool>(false);
        testSlotExecutionForType<QVariant>(QVariant(40));
    }

    void testRegisterProperty() {
        DynamicQObject<QObject> dynamicQObject;
        int index = -1;
        bool result = false;
        result = dynamicQObject.registerSlot("foo", QMetaType::Int, {}, index);
        QCOMPARE(index != -1, true);
        QCOMPARE(result, true);
        result = dynamicQObject.registerSlot("setFoo", QMetaType::Void, {QMetaType::Int}, index);
        QCOMPARE(index != -1, true);
        QCOMPARE(result, true);
        result = dynamicQObject.registerSignal("fooChanged", {QMetaType::Int}, index);
        QCOMPARE(index != -1, true);
        QCOMPARE(result, true);
        result = dynamicQObject.registerProperty("foo", QMetaType::Int, "foo", "setFoo", "fooChanged");
        QCOMPARE(result, true);
    }

private:
    template<typename ReturnType>
    void testSlotExecutionForType(ReturnType expectedReturnValue) {
        DynamicQObject<QObject> dynamicQObject;
        int index;
        dynamicQObject.registerSlot("fooSlot", (QMetaType::Type)qMetaTypeId<ReturnType>(), {}, index);
        QCOMPARE(index != -1, true);

        // Call the slot and check return value
        bool called = false;
        auto handler = [&called, expectedReturnValue](const DynamicSlot &slot, const std::vector<QVariant> &args) -> QVariant {
            called = true;
            return expectedReturnValue;
        };
        dynamicQObject.setOnSlotExecutedHandler(handler);
        ReturnType result;
        QMetaObject::invokeMethod(&dynamicQObject, "fooSlot", QReturnArgument<ReturnType>(TypeName<ReturnType>::Get(), result));
        QCOMPARE(called, true);
        QCOMPARE(result, expectedReturnValue);
    }
};

QTEST_MAIN(TestDynamicQObject)

#include "test_dynamicqobject.moc"