from django.db.models import Sum
from Base.models import ProductList
from Movement.models import Product

def metric(Day):
    products = ProductList.objects.all()
    product_mov = Product.objects.filter(date=Day).values()
    product_report = {}
    for product in products:
        product_item = product_mov.filter(
            product__name=product.name,
        ).aggregate(Sum('gross_value'))['gross_value__sum'] or 0
        product_cont = product_mov.filter(
            product__name=product.name,
        ).aggregate(Sum('quantity'))['quantity__sum'] or 0
        product_report[product.name] = {
            'product_item':product_item,
            'product_cont':product_cont,
        }
    sum_of_product = sum(item['product_item'] for item in product_report.values()) or 0
    return {
        'product_report':product_report,
        'sum_of_product':sum_of_product,
    }