class PropertyValuation:
    """
    This is a placeholder class for the property valuation model
    """

    UPRN_VALUE_LOOKUP = {
        15038202: {"current_value": 202000, "increase_percentage": 0.05725},
        37024763: {"current_value": 213000, "increase_percentage": 0.025},
    }

    @classmethod
    def estimate(cls, property_instance, target_epc):
        data = cls.UPRN_VALUE_LOOKUP.get(property_instance.uprn)

        if not data:
            raise ValueError("Have not implemented valuation for this property")

        new_valuation = (1 + data["increase_percentage"]) * data["current_value"]

        increase = round(new_valuation - data["current_value"], 2)

        return increase