# pylint: disable = missing-class-docstring
# pylint: disable = missing-function-docstring

"""
みてるぞ式魔改造（言ふほどか?）版 Eloquent
"""

import eloquent


class DatabaseManager (eloquent.DatabaseManager):
    pass


class Model (eloquent.Model):
    id: int

    def upsert (
            self,
            *args:  str,
    ) -> None:
        row = self._find_upsert_row (*args)
        if row is not None:
            self.id = row.id
            # pylint: disable = invalid-name
            # pylint: disable = attribute-defined-outside-init
            self._Model__exists = True
            self.save ()
            return

        try:
            self.save ()
        except Exception:
            row = self._find_upsert_row (*args)
            if row is None:
                raise
            self.id = row.id
            # pylint: disable = invalid-name
            # pylint: disable = attribute-defined-outside-init
            self._Model__exists = True
            self.save ()

    def _find_upsert_row (
            self,
            *args:  str,
    ):
        q = self.query ()
        for arg in args:
            q = q.where (arg, getattr (self, arg))
        return q.first ()