import datetime
from django.db import models
from django.contrib.sitemaps import Sitemap
from django.contrib.syndication.views import Feed


# http://freewisdom.org/projects/python-markdown/
import markdown

class Series(models.Model):
    title = models.CharField(max_length=200)
    slug = models.CharField(max_length=50)
    is_book = models.BooleanField(default=False)
    body_markdown = models.TextField(null=True, blank=True)
    body_html = models.TextField(null=True, blank=True)
    pub_date = models.DateTimeField(auto_now_add=True)

    class Meta:
        verbose_name_plural = 'Series'

    def __str__(self):
        return self.title

class Figment(models.Model):
    title = models.CharField(max_length=200)
    slug = models.CharField(max_length=50)
    pub_date = models.DateTimeField(blank=True)
    body_markdown = models.TextField(null=True, blank=True)
    prologue = models.TextField(null=True, blank=True)
    dek = models.TextField(null=True, blank=True)
    body_html = models.TextField(null=True, blank=True)
    PUB_STATUS = (
        (0, 'Draft'),
        (1, 'Published'),
    )
    status = models.IntegerField(choices=PUB_STATUS, default=0)
    series = models.ManyToManyField(Series, blank=True)
    TEMPLATES = (
        (0, 'default'),
    )
    template_name = models.IntegerField(choices=TEMPLATES, default=0)
    published_link = models.CharField(max_length=300, help_text="link to online pub", blank=True, null=True)

    class Meta:
        ordering = ('-pub_date',)

    def __str__(self):
        return self.title
    
    def get_absolute_url(self):
        return "/figments/%s" % self.slug
    
    def get_series(self):
        return "\n".join([s.title for s in self.series.all()])

    def save(self, *args, **kwargs):
        if not self.id and not self.pub_date:
            self.pub_date = datetime.datetime.now()
        self.body_html = markdown.markdown(self.body_markdown, extensions=['extra'], safe_mode=False)
        super(Figment, self).save()



class LatestFull(Feed):
    title = "luxagraf figments: stories less literally true."
    link = "/figments/"
    description = "Latest postings to luxagraf.net/figments"
    description_template = 'feeds/blog_description.html'

    def items(self):
        return Figment.objects.filter(status__exact=1).order_by('-pub_date')[:10]



from itertools import chain

class FigmentSitemap(Sitemap):
    changefreq = "never"
    priority = 0.7
    protocol = "https"

    def items(self):
        return list(chain(Figment.objects.filter(status__exact=1), Series.objects.all()))
         
    def lastmod(self, obj):
        return obj.pub_date