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

from greenmine.base.utils.slug import slugify_uniquely as slugify
from greenmine.base.fields import DictField


class Document(models.Model):
    slug = models.SlugField(unique=True, max_length=200, blank=True)

    title = models.CharField(max_length=150)
    description = models.TextField(blank=True)

    created_date = models.DateTimeField(auto_now_add=True)
    modified_date = models.DateTimeField(auto_now_add=True)

    project = models.ForeignKey('scrum.Project', related_name='documents')
    owner = models.ForeignKey('base.User', related_name='documents')
    attached_file = models.FileField(upload_to="documents", max_length=1000,
                                     null=True, blank=True)
    tags = DictField()

    class Meta:
        verbose_name = u'document'
        verbose_name_plural = u'document'
        ordering = ['project', 'title', 'id']
        permissions = (
            ('can_download_from_my_projects', 'Can download the documents from my projects'),
            ('can_download_from_other_projects', 'Can download the documents from other projects'),
            ('can_change_owned_documents', 'Can modify owned documents'),
            ('can_view_documents', 'Can modify owned documents'),
        )

    def __unicode__(self):
        return self.title

    def save(self, *args, **kwargs):
        if not self.slug:
            self.slug = slugify(self.title, self.__class__)
        super(Document, self).save(*args, **kwargs)