# -*- coding: utf-8 -*-

import os

from django.db import models
from django.utils.translation import ugettext_lazy as _
from TimeConvert import TimeConvert as tc

from manual.basemodels import CreateUpdateMixin
from utils.url_utils import upload_file_url


def upload_path(instance, old_filename):
    return 'file/{ym}/{stamp}{ext}'.format(
        ym=tc.local_string(format='%Y%m'),
        stamp=tc.local_timestamp(ms=True),
        ext=os.path.splitext(old_filename)[1].lower(),
    )


class MessageInfo(CreateUpdateMixin):
    msg_image = models.ImageField(_(u'msg_image'), upload_to=upload_path, blank=True, null=True, help_text=u'消息图片')
    msg_image_airtime = models.DateTimeField(_(u'msg_image_airtime'), blank=True, null=True, help_text=u'消息图片开始日期')
    msg_image_deadline = models.DateTimeField(_(u'msg_image_deadline'), blank=True, null=True, help_text=u'消息图片截止日期')

    class Meta:
        verbose_name = _(u'图片消息')
        verbose_name_plural = _(u'图片消息')

    def __unicode__(self):
        return unicode(self.pk)

    @property
    def msg_image_url(self):
        return upload_file_url(self.msg_image)

    @property
    def data(self):
        return {
            'msg_image_url': self.msg_image_url,
        }