from django.db.models import Sum
from django.utils import timezone
from Base.models import (
    PayMethod,
    BankAccount,
)
from Movement.models import (
    Calendar,
    Product,
    Expense,
    Stock
)

def metric():
    # Lista de Bancos
    banks = BankAccount.objects.all()

    # pegando total de Serviços
    sum_mov_serv = {}
    for bank in banks:
        sum_bank = Calendar.objects.filter(
            # active = True,
            pay_method__bank__name = bank.name,
        ).aggregate(Sum('net_value'))['net_value__sum'] or 0
        sum_mov_serv[bank.name] = sum_bank

    # pegando total de Produtos
    sum_mov_prod = {}
    for bank in banks:
        sum_bank = Product.objects.filter(
            # active=True,
            pay_method__bank__name=bank.name,
        ).aggregate(Sum('net_value'))['net_value__sum'] or 0
        sum_mov_prod[bank.name] = sum_bank

    # pegando total de Desspesas
    sum_expense = {}
    for bank in banks:
        sum_bank = Expense.objects.filter(
            # active=True,
            firm=True,
            bank__name=bank.name,
        ).aggregate(Sum('gross_value'))['gross_value__sum'] or 0
        sum_expense[bank.name] = sum_bank

    # pegando total de Desspesas Profissinal
    sum_expense_prof = {}
    for bank in banks:
        sum_bank = Expense.objects.filter(
            # active=True,
            firm=False,
            bank__name=bank.name,
        ).aggregate(Sum('gross_value'))['gross_value__sum'] or 0
        sum_expense_prof[bank.name] = sum_bank

    # Valores de entrada do estoque
    sum_stock = {}
    for bank in banks:
        sum_bank = Stock.objects.filter(
            # active=True,
            bank__name=bank.name,
        ).aggregate(Sum('gross_value'))['gross_value__sum'] or 0
        sum_stock[bank.name] = sum_bank

    # saldo total de tudo
    sum_total = {}
    for bank in banks:
        sum_mov_serv_get = sum_mov_serv.get(str(bank.name))
        sum_mov_prod_get = sum_mov_prod.get(str(bank.name))
        sum_expense_get = sum_expense.get(str(bank.name))
        sum_expense_prof_get = sum_expense_prof.get(str(bank.name))
        sum_sum_stock = sum_stock.get(str(bank.name))

        sum_total[bank.name] = (
                sum_mov_serv_get +
                sum_mov_prod_get -
                sum_expense_get -
                sum_expense_prof_get -
                sum_sum_stock
        )

    return sum_total