"""Snapshots of API provider balances/usage."""
from __future__ import annotations

from datetime import datetime

from sqlalchemy import DateTime, Float, String, func
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class BalanceSnapshot(Base):
    __tablename__ = "balance_snapshots"

    id: Mapped[int] = mapped_column(primary_key=True)
    provider: Mapped[str] = mapped_column(String(64), index=True)  # openrouter | deepseek
    total_credits: Mapped[float | None] = mapped_column(Float, nullable=True)
    total_usage: Mapped[float | None] = mapped_column(Float, nullable=True)
    remaining: Mapped[float | None] = mapped_column(Float, nullable=True)
    currency: Mapped[str] = mapped_column(String(8), default="USD")
    raw: Mapped[dict | None] = mapped_column(JSONB, nullable=True)
    error: Mapped[str | None] = mapped_column(String(512), nullable=True)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), index=True
    )