# -*- coding: utf-8 -*-
from django.db import models

from project.customer.models import Client
from .base_models import BaseInvoiceModel, BaseItemInvoiceModel
from .refs import Currency, Country, Measure
from .mixins import SignedStatusFieldMixin, InvoiceFieldMixin


class Faktura(BaseInvoiceModel, SignedStatusFieldMixin, InvoiceFieldMixin):
    """Счёт-фактура"""
    doc_reason = models.CharField(u'Основание', max_length=256, blank=True, default='')
    fixes = models.BooleanField(u'Изменения', default=False)
    avance = models.BooleanField(u'аванс', default=False)
    currency = models.ForeignKey(Currency, verbose_name=u'валюта', null=True)
    sender = models.ForeignKey(Client, related_name='sender_fakturas', blank=True, null=True, verbose_name=u'Отправитель')
    receiver = models.ForeignKey(Client, related_name='receiver_fakturas', blank=True, null=True, verbose_name=u'Получатель')

    class Meta(BaseInvoiceModel.Meta):
        verbose_name = u'Фактура'
        verbose_name_plural = u'Фактуры'
        app_label="docs"


class FakturaItem(BaseItemInvoiceModel):
    """Табличная часть фактуры"""
    parent = models.ForeignKey(Faktura, related_name='faktura_items')
    country = models.ForeignKey(Country, related_name='c_faktura_items')
    measure = models.ForeignKey(Measure, related_name='m_faktura_items')

    class Meta(BaseItemInvoiceModel.Meta):
        verbose_name = u'Табл. часть фактуры'
        verbose_name_plural = u'Табл. части фактур'
        app_label="docs"