# coding=utf-8
from __future__ import unicode_literals
import datetime
import smtplib

from django.db import models
from django.core.mail import EmailMessage, send_mail
from lms.settings import DEFAULT_FROM_EMAIL, TESTING, TEST_EMAIL, NAME, DOMAIN, SUPPORT, SUPPORT_PHONE
from redactor.fields import RedactorField

from lms.tools import random_string, str_shielding


def mail_access_token():
    pass


class MailTemplate(models.Model):
    key = models.CharField(verbose_name=u'Ключ шаблона', max_length=255, editable=False, blank=True)
    title = models.CharField(verbose_name=u'Название шаблона', max_length=255)
    text = models.TextField(verbose_name=u'Шаблон', default='', help_text='{TEXT} - Текст самого письма '
                                                                          '{DOMAIN} - Домен отправителя'
                                                                          '{NAME} - Название компании,'
                                                                          '{SUPPORT} - Почта поддержки,'
                                                                          '{SUPPORT_PHONE} - Телефон поддержки')

    def __unicode__(self):
        return u'%s' % self.title

    def __str__(self):
        return '%s' % self.title

    def save(self, *args, **kwargs):
        if not self.key:
            self.key = random_string()
        super(MailTemplate, self).save(*args, **kwargs)

    class Meta:
        verbose_name = u'Шаблон письма'
        verbose_name_plural = u'Шаблоны писем'


class MailBox(models.Model):
    MAIL_STATUS = (
        ('Q', 'На очереди'),
        ('W', 'Ожидает даты доставки'),
        ('S', 'Отправлен'),
        ('E', 'Ошибка отправки'),
        ('D', 'Доставлен'),
        ('F', 'Адресат не найден')
    )
    #token = models.CharField(verbose_name=u'Токен', max_length=255, default=mail_access_token, unique=True)
    status = models.CharField(verbose_name=u'Статус письма', choices=MAIL_STATUS, default='Q', max_length=1)
    custom = models.BooleanField(verbose_name=u'Кастомная обложка', default=False)
    _to = models.EmailField(verbose_name=u'Почта')
    queue_date = models.DateTimeField(verbose_name=u'Дата постановки задачи', default=datetime.datetime.now,
                                      help_text=u'Если указать дату доставки, письмо будет ожидать времени своего '
                                                u'отправления')
    error = models.CharField(verbose_name=u'Ошибка отправки', blank=True, default='', max_length=255)
    sent_date = models.DateTimeField(verbose_name=u'Время отправки', blank=True, null=True, editable=False)
    title = models.CharField(verbose_name=u'Заголовок письма', max_length=255)
    text = models.TextField(verbose_name=u'Текст отправки', editable=False)
    result = RedactorField(verbose_name=u'Вид письма', blank=True, default='')
    _type = models.CharField(verbose_name=u'Тип письма', max_length=255, blank=True, default='')
    template = models.CharField(verbose_name=u'Ключ шаблона письма', max_length=100, blank=True, default='')

    def __unicode__(self):
        return u'%s %s' % (self._to, self.get_status_display())

    def __str__(self):
        return '%s %s' % (self._to, self.get_status_display())

    def send_letter(self):
        if not self.custom:
            msg = EmailMessage(self.title, self.result, u'{1} <{0}>'.format(DEFAULT_FROM_EMAIL, NAME),
                               [self._to if not TESTING else TEST_EMAIL])
            msg.content_subtype = "html"
            try:
                msg.send()
            except smtplib.SMTPDataError as e:
                self.status = 'E'
                self.error = e
            else:
                self.sent_date = datetime.datetime.now()
                self.status = 'S'
        else:
            try:
                send_mail(
                    self.title,
                    '',
                    u'{1} <{0}>'.format(DEFAULT_FROM_EMAIL, NAME),
                    [self._to],
                    fail_silently=True,
                    html_message=self.result
                )
            except smtplib.SMTPDataError as e:
                self.status = 'E'
                self.error = e
            else:
                self.sent_date = datetime.datetime.now()
                self.status = 'S'
        self.save()

    def save(self, *args, **kwargs):
        if not self.result:
            template = u'<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">' \
                       u'<html>' \
                       u'<head>' \
                       u'<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' \
                       u'<title></title>' \
                       u'</head>' \
                       u'<body>' \
                       u'<table width=100%>{TEXT}' \
                       u'<tr><td style="padding-bottom: 20px;">С уважением,<Br>{NAME}</td></tr>' \
                       u'<tr><td style="padding-bottom: 20px;"><img src="{DOMAIN}/static/img/logo.png"></td></tr>' \
                       u'<tr><td>Пожалуйста, по любым вопросам смело пишите на {SUPPORT}</td></tr>' \
                       u'</table>' \
                       u'</body>' \
                       u'</html>'
            if self.template:
                try:
                    _tmp = MailTemplate.objects.get(key=self.template)
                except MailTemplate.DoesNotExists:
                    pass
                else:
                    template = str_shielding(_tmp.text, ['{TEXT}', '{DOMAIN}', '{NAME}', '{SUPPORT}', '{SUPPORT_PHONE}'])
            self.result = template.format(**{'TEXT': self.text, 'DOMAIN': DOMAIN, 'NAME': NAME, 'SUPPORT': SUPPORT, 'SUPPORT_PHONE': SUPPORT_PHONE})
        else:
            self.custom = True

        super(MailBox, self).save(*args, **kwargs)

    class Meta:
        verbose_name = u'Письмо'
        verbose_name_plural = u'Письма'


class Sms(models.Model):
    STAT = (
        ('S', 'Отправляется'),
        ('F', 'Отправлен'),
        ('E', 'Ошибка отправления')
    )
    FROM = (
        ('T', 'Tocka Koda'),
        ('C', 'CODEMY.RU')
    )
    sent = models.BooleanField(verbose_name=u'Отправить', default=False, editable=False)
    _to = models.CharField(verbose_name=u'Получатель', max_length=255, help_text='+79660497379')
    _status = models.CharField(verbose_name=u'Статус сообщения', max_length=1, default='S', choices=STAT,
                               editable=False)
    date = models.DateTimeField(verbose_name=u'Дата отправки', default=datetime.datetime.now,
                                help_text='Не дальше 7ми дней')
    text = models.TextField(verbose_name=u'Текст')
    _from = models.CharField(verbose_name=u'Отправитель', max_length=1, default='C', choices=FROM)
    error = models.TextField(verbose_name=u'Описание отправки', blank=True, null=True, editable=False)
    debug = models.CharField(verbose_name=u'Строка запроса', max_length=255, blank=True)

    def __unicode__(self):
        return u'%s %s %s' % (self._to, self._status, self.text)

    def save(self, *args, **kwargs):
        #if not self.sent:
        #    try:

        #        url = "http://sms.ru/sms/send"
        #        values = {'api_id': SMS, 'to': self._to, 'text': self.text.encode('utf-8'),
        #                  'from': self.get__from_display(), 'time': str(time.mktime(self.date.timetuple()))[:10]}
        #        data = urllib.urlencode(values)
        #        self.debug = url
        #        req = urllib2.Request(url, data)
        #        res = urllib2.urlopen(req)
        #    except urllib2.URLError as errstr:
        #        self.error = errstr
        #        self._status = 'E'
        #    else:
        #        sr = res.read().splitlines()
        #        if sr is not None and int(sr[0]) == 100:
        #            self._status = 'F'

        #        if sr is not None and int(sr[0]) != 100:
        #            self._status = 'E'
        #            self.error = servicecodes[int(sr[0])]
        #    self.sent = True

        super(Sms, self).save(*args, **kwargs)

    class Meta:
        verbose_name = u'СМС'
        verbose_name_plural = u'СМС'