from sqlalchemy import Integer, String, Text
from sqlalchemy.dialects.sqlite import JSON
from sqlalchemy.orm import Mapped, mapped_column

from core_db import AuditMixin, Base, TenantMixin, VersionMixin


class Message(TenantMixin, AuditMixin, VersionMixin, Base):
    __tablename__ = "message"

    session_id: Mapped[str] = mapped_column(String(36), index=True)
    turn_id: Mapped[str | None] = mapped_column(String(36), nullable=True, index=True)
    role: Mapped[str] = mapped_column(String(32))
    content_type: Mapped[str] = mapped_column(String(32))
    content_text: Mapped[str | None] = mapped_column(Text, nullable=True)
    content_json: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    token_count: Mapped[int | None] = mapped_column(Integer, nullable=True)