import sys
import typing

from PyQt6.QtCore import qVersion, Qt, QAbstractListModel, QModelIndex
from PyQt6.QtWidgets import QApplication, QListView


class ChoiceModel(QAbstractListModel):
    def __init__(self, data: typing.List[dict]) -> None:
        super().__init__()
        self._data = data

    def rowCount(self, parent: QModelIndex = QModelIndex()) -> int:
        if parent == QModelIndex():
            return len(self._data)
        return 0

    def data(self, index, role):
        if not index.isValid():
            return None
        d = self._data[index.row()]
        if role == Qt.ItemDataRole.DisplayRole.value:
            return d["name"]

        if role == Qt.ItemDataRole.CheckStateRole:
            checked = d["checked"]
            print('data(), row=', index.row(), ' checked=', checked)
            r = Qt.CheckState.Checked if checked else Qt.CheckState.Unchecked
            return r  # Workaround: int(r)

    def setData(self, index: QModelIndex, value: typing.Any, role) -> bool:
        value = Qt.CheckState(value)
        print('setData(), row=', index.row(), value)
        if role != Qt.ItemDataRole.CheckStateRole:
            return False
        if index.column() > 0:
            return False
        self._data[index.row()]["checked"] = True if value == Qt.CheckState.Checked else False
        self.dataChanged.emit(index, index, [role])
        return True

    def flags(self, index: QModelIndex):
        f = super().flags(index) | Qt.ItemFlag.ItemIsUserCheckable | Qt.ItemFlag.ItemIsEditable
        print(f'flags(), row={index.row()}, ', f)
        return f


if __name__ == "__main__":
    print('Python {}.{}'.format(sys.version_info[0], sys.version_info[1]))
    print(qVersion())
    app = QApplication(sys.argv)

    view = QListView()
    view.setWindowTitle("PyQt " + qVersion())
    model = ChoiceModel([{"name": "test", "checked": True},
                         {"name": "test", "checked": True}])
    view.setModel(model)

    view.show()
    app.exec()