from __future__ import annotations

from django.core.exceptions import ValidationError


class MultilingualValidationMixin:
    """Opt-in mixin for project models that want explicit clean()-time enforcement."""

    def clean(self):
        from .types import format_issue
        from .validators.multilingual import validate_snippet_instance

        super_clean = getattr(super(), "clean", None)
        if callable(super_clean):
            super_clean()
        issues = validate_snippet_instance(self)
        blocking = [issue for issue in issues if issue.blocks]
        if blocking:
            raise ValidationError({"content_guard": [format_issue(issue) for issue in blocking]})