# -*- coding: utf-8 -*-
from django.utils import timezone

french_days = {
        1: "lundi",
        2: "mardi",
        3: "mercredi",
        4: "jeudi",
        5: "vendredi",
        6: "samedi",
        7: "dimanche",
    }

french_months = {
        1: "janvier",
        2: "février",
        3: "mars",
        4: "avril",
        5: "mai",
        6: "juin",
        7: "juillet",
        8: "août",
        9: "septembre",
        10: "octobre",
        11: "novembre",
        12: "décembre",
    }


def dayname(date):
    return french_days[date.isoweekday()]


def weekname(date):
    (_, a, _) = date.isocalendar()
    week_num = a
    return "semaine %d" % week_num


def monthname(date):
    return french_months[date.month]


# Pareil mais pour une liste de dates
# dans un dico ordonné
def daynames(dates):
    names = {}
    for i in dates:
        names[i] = dayname(dates[i])
    return names


# Pareil mais pour une liste de dates
# dans un dico ordonné
def weeksnames(dates):
    names = {}
    for i in dates:
        names[i] = weekname(dates[i])
    return names


# Pareil mais pour une liste de dates
# dans un dico ordonné
def monthnames(dates):
    names = {}
    for i in dates:
        names[i] = monthname(dates[i])
    return names


# rend les dates des nb derniers jours
# dans l'ordre chronologique
# aujourd'hui compris
# nb = 1 : rend hier
def lastdays(nb):
    morning = this_morning()
    days = {}
    for i in range(1, nb+1):
        days[i] = morning - timezone.timedelta(days=nb - i + 1)
    return days


def lastweeks(nb):
    monday_morning = this_monday_morning()
    mondays = {}
    for i in range(1, nb+1):
        mondays[i] = monday_morning \
                    - timezone.timedelta(days=7*(nb - i + 1))
    return mondays


# def lastmonths(nb):
#     first_month_day = this_first_month_day()
#     fisrt_days = {}
#     for i in range(1, nb+1):
#         days[i] = 


def this_first_month_day():
    now = timezone.now()
    first_day = timezone.datetime(year=now.year,
                                  month=now.month,
                                  day=1)
    return first_day


def this_monday_morning():
    now = timezone.now()
    monday = now - timezone.timedelta(days=now.isoweekday()-1)
    monday_morning = timezone.datetime(year=monday.year,
                                       month=monday.month,
                                       day=monday.day)
    return monday_morning


def this_morning():
    now = timezone.now()
    morning = timezone.datetime(year=now.year,
                                month=now.month,
                                day=now.day)
    return morning


# Étant donné un queryset d'operations
# rend la somme des article_nb
def tot_ventes(queryset):
    res = 0
    for op in queryset:
        res += op.article_nb
    return res