from pyheatpump.db import RowClass
from pyheatpump.db import sql
from datetime import datetime
from pprint import pprint

class VariableValue(RowClass):
    type: str = None
    address: int = None
    time: datetime = None
    value: int = None

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

    @staticmethod
    def get(type, address, time=datetime.now()):
        try:
            row = next(sql(
            """
                SELECT * FROM var_value
                WHERE
                    type = '{}'
                    AND address = {}
                    AND time <= {}
                ORDER BY time DESC
                LIMIT 1
            """.format(
                type, address, int(time.strftime('%s'))+1)
            ))
            return VariableValue(**dict(row))
        except StopIteration as e:
            raise e