from sqlalchemy import func

from calculators import Calculator
from commons.models.fujian_survey import FujianSurvey
from commons.models.fuzhou_highway_bureau import FuzhouHighwayBureau
from commons.models.fuzhou_transportation_bureau import FuzhouTransportationBureau
from commons.models.price_result import PriceResult
from commons.models.steel_strand import SteelStrand


class SteelStrandCalculator(Calculator):
    name = "钢绞线"
    material_id = "19.04.60.00"
    unit = "t"
    spec = ""

    def __init__(self, year, month):
        self.year = year
        self.month = month

    def _get_ftb_price(self):
        query = FuzhouTransportationBureau.get_query(self.year, self.month, name='钢绞线')
        query = query.with_entities(func.avg(FuzhouTransportationBureau.price))
        result = query.all()
        if not result[0][0]:
            return 0, 0
        price = int(result[0][0])
        fluctuating = price - getattr(self.previous_prices, 'ftb_price', price)
        return price, fluctuating

    # def _get_ss_price(self):
    #     return 4000, -10

    def _get_fhb_price(self):
        query = FuzhouHighwayBureau.get_query(self.year, self.month, name='钢绞线')
        query = query.with_entities(func.avg(FuzhouHighwayBureau.price))
        result = query.all()
        if not result[0][0]:
            return 0, 0
        price = int(result[0][0])
        fluctuating = price - getattr(self.previous_prices, 'ftb_price', price)
        return price, fluctuating

    def _get_network_price(self):
        result = SteelStrand.get_items(self.year, self.month)
        prices = {material: float(price) for material, price in result}
        price = round(prices.get('SWRH82B', 0))

        fluctuating = price - getattr(self.previous_prices, 'price_network', price)
        return price, fluctuating

    def _get_survey_price(self):
        query = FujianSurvey.get_query(self.year, self.month, name='钢绞线')
        query = query.with_entities(func.avg(FujianSurvey.price))
        result = query.all()
        if not result[0][0]:
            return 0, 0
        price = int(result[0][0])
        fluctuating = price - getattr(self.previous_prices, 'price_survey', price)
        return price, fluctuating

    def _get_recommend_price(self):
        self._fluctuatings = [self.fluctuating_network, self.fluctuating_survey, self.fluctuating_fhb, self.fluctuating_ftb]
        return super()._get_recommend_price()

    def save(self):
        result = self.result()
        PriceResult(**result).upsert()


if __name__ == '__main__':
    from core.factory import ClientApp

    with ClientApp().app_context():
        calculator = SteelStrandCalculator(year=2023, month=11)
        result = calculator.run()
        calculator.save()
        print(result)