from django.db import models
from django.contrib.auth import get_user_model
from django.contrib.postgres.fields import HStoreField
from django.utils.translation import ugettext_lazy as _

from autoslug import AutoSlugField

# Create your models here.
from core.models import AbstractStatusModel
from products.models import Product

OFFER_STATUS_ACTIVE = 25
OFFER_STATUS_INACTIVE = 50

OFFER_STATUS_CHOICES = (
    (OFFER_STATUS_ACTIVE, _('Активный')),
    (OFFER_STATUS_INACTIVE, _('Неактивный'))
)

OFFER_DEFAULT_CHOICE = OFFER_STATUS_INACTIVE


class Offer(AbstractStatusModel):
    name = models.CharField(max_length=64, blank=True, null=True, default=None)
    slug = AutoSlugField(populate_from='name')
    price = models.DecimalField(max_digits=8, decimal_places=2, null=True, default=0.00)
    product = models.ForeignKey(Product, on_delete=models.CASCADE, blank=True, null=True, default=None,
                                related_name='variants')
    attributes = HStoreField(blank=True, null=True, default={})

    status = models.SmallIntegerField(_('статус'), default=OFFER_DEFAULT_CHOICE, choices=OFFER_STATUS_CHOICES)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _('Позиция')
        verbose_name_plural = _('Позиции')


# ------------------------------------------ Buying status --------------------------------------------------- #
BUYING_STATUS_IN_CART = 25
BUYING_STATUS_PENDING = 50
BUYING_STATUS_BOUGHT = 75
BUYING_STATUS_CHOICES = (
    (BUYING_STATUS_IN_CART, _('В корзине')),
    (BUYING_STATUS_PENDING,_('Обрабатываеться')),
    (BUYING_STATUS_BOUGHT, _('Куплен'))
)

BUYING_DEFAULT_CHOICE = BUYING_STATUS_IN_CART


class Buying(AbstractStatusModel):
    user = models.ForeignKey(get_user_model(),verbose_name=_('пользователь'), on_delete=models.CASCADE)
    offer = models.ForeignKey(Offer, verbose_name=_('позиция'), on_delete=models.CASCADE)
    status = models.SmallIntegerField(_('статус'), default=BUYING_DEFAULT_CHOICE, choices=BUYING_STATUS_CHOICES)

    class Meta:
        verbose_name = _('Покупка')
        verbose_name_plural = _('Покупки')