# -*- coding: utf-8 -*-
from django.db import models
from hvad.models import TranslatableModel, TranslatedFields
#custom functions
from functions.custom_fields import EnumField



CURRENCY = ('RUB', 'USD', 'EUR')

class Conference(TranslatableModel):
    """
    Create Conference model

    Uses hvad.TranslatableModel which is child of django.db.models class
    """
    url = models.SlugField(unique=True)
    data_begin = models.DateField(verbose_name='Дата начала')
    data_end = models.DateField(verbose_name='Дата окончания')
    #relations
    country = models.ForeignKey('country.Country', verbose_name='Страна', on_delete=models.PROTECT)
    city = models.ForeignKey('city.City', verbose_name='Город', on_delete=models.PROTECT)
    place = models.ForeignKey('place_conference.PlaceConference', verbose_name='Место проведения',
                              blank=True, null=True, on_delete=models.PROTECT, related_name='conference_place')
    theme = models.ManyToManyField('theme.Theme', verbose_name='Тематики',
                              related_name='conference_themes')
    tag = models.ManyToManyField('theme.Tag', verbose_name='Теги',
                              blank=True, null=True, related_name='conference_tags')
    organiser = models.ManyToManyField('organiser.Organiser', verbose_name='Организатор',
                              blank=True, null=True, related_name='conference_organisers')
    company = models.ManyToManyField('company.Company', verbose_name='Компании',
                              blank=True, null=True, related_name='conference_compamies')
    users = models.ManyToManyField('accounts.User', verbose_name='Посетители выставки',
                              blank=True, null=True, related_name='conference_users')
    #!service has bitfield uncomment when country data will be filled
    #service = models.ManyToManyField('service.Service', verbose_name='Услуги', blank=True, null=True)
    web_page = models.CharField(verbose_name='Вебсайт', max_length=255, blank=True)
    link = models.CharField(verbose_name='Линк на регистрацию', max_length=255, blank=True)
    foundation_year = models.PositiveIntegerField(verbose_name='Год основания', blank=True, null=True)
    #
    currency = EnumField(values=CURRENCY, default='RUB')
    tax = models.BooleanField(verbose_name='Налог', default=1)
    min_price = models.PositiveIntegerField(verbose_name='Минимальная цена', blank=True, null=True)
    max_price = models.PositiveIntegerField(verbose_name='Максимальная цена', blank=True, null=True)
    #administrator can cancel conference
    canceled_by_administrator = models.BooleanField(default=0)
    #can publish not immediately
    is_published = models.BooleanField(default=0)
    #translated fields
    translations = TranslatedFields(
        name = models.CharField(verbose_name='Название', max_length=255),
        main_title=models.TextField(verbose_name='Краткое описание', blank=True),
        description=models.TextField(verbose_name='Описание', blank=True),
        main_themes=models.TextField(verbose_name='Основные темы', blank=True),
        time=models.TextField(verbose_name='Время работы', blank=True),
        discount=models.TextField(verbose_name='Условия и Скидки', blank=True),
        #-----meta data
        title=models.CharField(max_length=250),
        descriptions=models.CharField(max_length=250),
        keywords=models.CharField(max_length=250),
    )

    #fields saves information about creating and changing model
    created = models.DateTimeField(auto_now_add=True)
    modified = models.DateTimeField(auto_now=True)

    #audience = EnumField(values=AUDIENCE)
    #mark

    def __unicode__(self):
        return self.lazy_translation_getter('name', unicode(self.pk))

    def cancel(self):
        self.canceled_by_administrator = True


class TimeTable(TranslatableModel):
    """
    TimeTable for business program

    """
    exposition = models.ForeignKey(Conference, related_name='business_program')
    begin = models.DateTimeField(verbose_name='Начало')
    end = models.DateTimeField(verbose_name='Конец')
    #translated fields
    translations = TranslatedFields(
        name = models.CharField(verbose_name='Название', max_length=255)
    )