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import os
import sys
import unittest

from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from init_paths import init_test_paths
init_test_paths(False)

from helper.helper import adjust_filename

from PySide6.QtCore import Property, Signal, QTimer, QUrl, QObject
from PySide6.QtGui import QGuiApplication
from PySide6.QtQml import qmlRegisterSingletonType
from PySide6.QtQuick import QQuickView

finalResult = 0

class SingletonQObject(QObject):
    def __init__(self, parent = None):
        QObject.__init__(self, parent)
        self._data = 100

    def getData(self):
        return self._data

    def setData(self, data):
        global finalResult
        finalResult = self._data = data

    data = Property(int, getData, setData)

def singletonQObjectCallback(engine):
    obj = SingletonQObject()
    obj.setData(50)
    return obj

def singletonQJSValueCallback(engine):
    return engine.evaluate("new Object({data: 50})")

class TestQmlSupport(unittest.TestCase):
    def testIt(self):
        app = QGuiApplication([])

        qmlRegisterSingletonType(SingletonQObject, 'Singletons', 1, 0, 'SingletonQObjectNoCallback')
        qmlRegisterSingletonType(SingletonQObject, 'Singletons', 1, 0, 'SingletonQObjectCallback',
                                 singletonQObjectCallback)

        qmlRegisterSingletonType('Singletons', 1, 0, 'SingletonQJSValue', singletonQJSValueCallback)

        view = QQuickView()
        view.setSource(QUrl.fromLocalFile(adjust_filename('registersingletontype.qml', __file__)))
        view.show()
        QTimer.singleShot(250, view.close)
        app.exec_()
        self.assertEqual(finalResult, 200)

if __name__ == '__main__':
    unittest.main()