from django.shortcuts import render
from django.template import RequestContext

from .models import Transaction, DescriptionType, TvaType

# Create your views here.
def transaction_listing(request, year):
    tmp = Transaction.objects.filter(date__year = year)
    sumHTvap = 0
    sumHTvam = 0
    sumTvap = 0
    sumTvam = 0
    sumDeductible = 0

    nb_transaction = tmp.count()

    for line in tmp:
        if line.amountHTva > 0:
            sumHTvap += line.amountHTva
        else:
            sumHTvam += line.amountHTva

        if line.amountTva > 0:
            sumTvap += line.amountTva
        else:
            sumTvam += line.amountTva

        sumDeductible += line.amountDeductible

    benefit = sumHTvap + sumDeductible
    context = { 'year': year, 'sumHTvap' : sumHTvap, 'sumHTvam' : sumHTvam, 'sumTvap' : sumTvap,
                'sumTvam' : sumTvam, 'sumDeductible' : sumDeductible, 'benefit' : benefit,
                'nb_transaction': nb_transaction,
                'Transactions': Transaction.objects.filter(date__year = year).order_by('date') }
    
    # 3) Faire le calcul ici en "static" ou en jquery dans ma vue, en "dynamique" (suivant les cases cochées ou pas, ...)
    return render(request, 'compta/transaction/listing.html', context)


def transaction_detail(request, transactionid):
    """
        Renvoie les détails d'une transaction dont l'ID est passé en paramètre.
    """

    transaction = Transaction.objects.get(pk=transactionid)
    context = {'transaction': transaction}
    return render(request, 'compta/transaction/detail.html', context)


def year_listing(request):
    """
    Liste les années de comptabilité présentes.
    """
    year_list = DescriptionType.objects.values('year').distinct()
    year_count = []
    for year in year_list:
        year_count.append((year, Transaction.objects.filter(date__year = year['year']).count()))

    context = { 'objects_year': year_count }
    return render(request, 'year_listing.html', context)