from fastapi import APIRouter, Depends, HTTPException
from sqlmodel import Session

from app.auth import get_current_user
from app.db import get_session
from app.models.models import ExchangeRateRead
from app.services.exchange_rate import get_current_rate, get_rate_history

router = APIRouter(prefix="/exchange-rate", tags=["exchange-rate"])


@router.get("/", response_model=ExchangeRateRead)
def current_rate(
    session: Session = Depends(get_session),
    _user: str = Depends(get_current_user),
):
    rate = get_current_rate(session)
    if not rate:
        raise HTTPException(status_code=503, detail="Exchange rate unavailable")
    return rate


@router.get("/history", response_model=list[ExchangeRateRead])
def rate_history(
    days: int = 30,
    session: Session = Depends(get_session),
    _user: str = Depends(get_current_user),
):
    return get_rate_history(session, days)