from apps.wpm.models import SfLog, StLog, StSfLog
from apps.mtm.models import Shift, Mgroup
import datetime
from django.utils.timezone import localtime
from django.db.models import Sum
from django.core.cache import cache

def make_sflogs(mgroup: Mgroup, start_date: datetime.date, end_date: datetime.date):
    for shift in Shift.objects.all():
        start_time_o = shift.start_time_o
        end_time_o = shift.end_time_o
        current_date = start_date
        while current_date <= end_date:
            start_time = datetime.datetime.combine(current_date, start_time_o)
            end_time = datetime.datetime.combine(current_date, end_time_o)
            if start_time > end_time:
                start_time -= datetime.timedelta(days=1)
            SfLog.objects.get_or_create(mgroup=mgroup, shift=shift, start_time=start_time, defaults={
                "mgroup": mgroup,
                "shift": shift,
                "start_time": start_time,
                "end_time": end_time,
            })
            current_date = current_date + datetime.timedelta(days=1)

def get_pcoal_val(year_s: int, month_s: int, day_s: int):
    """
    获取煤粉热值
    只有回转窑需要录入煤粉热值
    """
    key = f'pgoal_val_{year_s}_{month_s}_{day_s}'
    pcoal_val = cache.get(key, None)
    if pcoal_val is not None:
        return pcoal_val
    else:
        try:
            qs = SfLog.objects.get(end_time__year=year_s, end_time__month=month_s, end_time__day=day_s,
                                        mgroup__name='回转窑', shift__name='夜班')
            if qs.pcoal_val is None:
                qs.pcoal_val = 0
                qs.save()
            cache.set(f'pgoal_val_{year_s}_{month_s}_{day_s}', qs.pcoal_val)
            return qs.pcoal_val
        except:
            return 0