"""ORM models. One table for now: the per-user cached feed (the last completed search)."""
from __future__ import annotations

from datetime import datetime

from sqlalchemy import JSON, DateTime, Integer, String, func
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


class Base(DeclarativeBase):
    pass


class UserFeed(Base):
    """The user's last completed search — replayed on load so matches survive navigation.
    Upserted on each `search_complete`; read by `get_feed`. One row per user (PK = user_id)."""
    __tablename__ = "user_feed"

    user_id: Mapped[str] = mapped_column(String, primary_key=True)
    prefs: Mapped[dict] = mapped_column(JSON, default=dict)            # the ScoutPrefs that produced it
    opportunities: Mapped[list] = mapped_column(JSON, default=list)    # the curated deck (with match blocks)
    sources: Mapped[dict] = mapped_column(JSON, default=dict)          # per-board counts
    engine: Mapped[str] = mapped_column(String, default="")           # "opus" | "fallback:…"
    scanned: Mapped[int] = mapped_column(Integer, default=0)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )