from django.db import models

from django.conf import settings

from conservancy.apps.staff.models import Person

from datetime import datetime, timedelta

class EntryTag(models.Model):

    """Tagging for blog entries"""

    label = models.CharField(max_length=100)

    slug = models.SlugField()

    class Meta:

        db_table = 'techblog_entrytag' # legacy

    def __unicode__(self):

        return self.label

    def get_absolute_url(self):

        return u"/blog/?tag=%s" % self.slug

    """Blog entry"""

    headline = models.CharField(max_length=200)

    slug = models.SlugField(unique_for_date='pub_date')

    summary = models.TextField(help_text="Use raw HTML.  Unlike in the press release model, this summary is not included at the beginning of the body when the entry is displayed.")

    body = models.TextField(help_text="Use raw HTML.  Include the full body of the post.")

    pub_date = models.DateTimeField()

    author = models.ForeignKey(Person)

    tags = models.ManyToManyField(EntryTag, null=True, blank=True)

    date_created = models.DateTimeField(auto_now_add=True)

    date_last_modified = models.DateTimeField(auto_now=True)

    class Meta:

        db_table = 'techblog_entries' # legacy

        verbose_name_plural = 'entries'

        ordering = ('-pub_date',)

        get_latest_by = 'pub_date'

    def __unicode__(self):

        return self.headline

    def get_absolute_url(self):

        return (u"/blog/%s/%s/"

                % (self.pub_date.strftime("%Y/%b/%d").lower(),

                   self.slug))

    def is_recent(self):

        return self.pub_date > (datetime.now() - timedelta(days=30))

        # question: does datetime.now() do a syscall each time is it called?