"""Ingest offset model for incremental sync checkpoints."""

from __future__ import annotations

from typing import Any, Optional

from sqlalchemy import Integer, VARCHAR, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column

from .base import Base
from .types import JSONB


class IngestOffset(Base):
    __tablename__ = "ingest_offsets"
    __table_args__ = (
        UniqueConstraint("tenant_id", "channel", "offset_key", name="uq_ingest_offsets_tenant_channel_key"),
    )

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    channel: Mapped[str] = mapped_column(VARCHAR(32), nullable=False, index=True)
    offset_key: Mapped[str] = mapped_column(VARCHAR(128), nullable=False, index=True)
    offset_value: Mapped[str] = mapped_column(VARCHAR(255), nullable=False)
    payload: Mapped[Optional[Any]] = mapped_column(JSONB, nullable=True)