from fastapi import APIRouter, Depends
from sqlalchemy.orm import Session
from datetime import datetime, timezone

from ..database import get_db
from .. import models
from ..dependencies import get_current_user
from ..services.btc import get_btc_history_eur

router = APIRouter()


@router.get("/history")
def get_history(
    db: Session = Depends(get_db),
    current_user: models.User = Depends(get_current_user),
):
    raw = get_btc_history_eur()

    # Convert timestamps and deduplicate (keep last price per date)
    seen = {}
    for ts, price in raw:
        date = datetime.fromtimestamp(ts / 1000, tz=timezone.utc).strftime("%Y-%m-%d")
        seen[date] = round(price, 2)

    prices = [{"date": d, "price": p} for d, p in seen.items()]

    purchases_db = db.query(models.Purchase).filter(
        models.Purchase.user_id == current_user.id
    ).all()

    purchases = [
        {
            "date": p.created_at.strftime("%Y-%m-%d"),
            "amount_eur": round(p.amount_eur, 2),
            "price_eur": round(p.price_eur, 2),
        }
        for p in purchases_db
    ]

    return {"prices": prices, "purchases": purchases}