from apps.enm.models import Mpoint, MpointStat
import re


def translate_eval_formula(exp_str: str, year: int, month: int, day: int, hour: int):
    """
    传入
    """
    pattern = r'\${(\d+)}'
    matches = re.findall(pattern, exp_str)

    for match in matches:
        mpst = MpointStat.objects.filter(type='hour', mpoint__id=match, year=year, month=month, day=day).first()
        if mpst:
            exp_str = exp_str.replace(f"${{{match}}}", mpst.val)
    
    rval = eval(exp_str)
    return rval