import requests

from games.models import ExchangeRate, Purchase


def update_converted_prices():
    purchases = Purchase.objects.filter(
        converted_price__isnull=True, converted_currency__isnull=True
    )

    for purchase in purchases:
        if purchase.price == 0:
            continue
        year = purchase.date_purchased.year
        currency_from = purchase.price_currency
        # fixme: save preferred currency in user model
        currency_to = "CZK"

        exchange_rate = ExchangeRate.objects.filter(
            currency_from=currency_from, currency_to=currency_to, year=year
        ).first()

        if not exchange_rate:
            try:
                response = requests.get(
                    f"https://api.exchangeratesapi.io/{year}-01-01",
                    params={"base": currency_to, "symbols": "currency_from"},
                )
                response.raise_for_status()
                data = response.json()
                rate = data["rates"].get(currency_from)

                if rate:
                    exchange_rate = ExchangeRate.objects.create(
                        currency_from=currency_from,
                        currency_to=currency_to,
                        year=year,
                        rate=rate,
                    )
            except requests.RequestException as e:
                print(
                    f"Failed to fetch exchange rate for {currency_from} in {year}: {e}"
                )
        if exchange_rate:
            converted_price = purchase.price * exchange_rate.rate
            purchase.converted_price = converted_price
            purchase.converted_currency = currency_to
            purchase.save()