from django.db.models import Sum , Count
from django.utils import timezone
from Movement.models import (
    Calendar,
    ExpenseOrCredit
)

def metric(Prof_id):
    current_month = timezone.localtime(timezone.now()).month
    current_year = timezone.localtime(timezone.now()).year

    calenda = Calendar.objects.filter(
        professional_id=Prof_id,
        date__month=current_month,
        date__year=current_year,
    )
    debit = ExpenseOrCredit.objects.filter(
        prof=True,
        debit=True,
        credit=False,
        professional_id=Prof_id,
        date__month=current_month,
        date__year=current_year,
    )
    credit = ExpenseOrCredit.objects.filter(
        prof=True,
        debit=False,
        credit=True,
        professional_id=Prof_id,
        date__month=current_month,
        date__year=current_year,
    )
    sum_calenda = calenda.aggregate(Sum('prof_money'))['prof_money__sum'] or 0
    sum_debit = calenda.aggregate(Sum('gross_value'))['gross_value__sum'] or 0
    sum_credit = calenda.aggregate(Sum('gross_value'))['gross_value__sum'] or 0
    all = sum_calenda + sum_credit - sum_debit

    return all