from django.db import models
from blog.models import image_url_replace, extract_images
import markdown

class Topic(models.Model):
    name = models.CharField(max_length=60)
    slug = models.SlugField()
    pluralized_name = models.CharField(max_length=60)
    
    def __str__(self):
        return self.name


class Entry(models.Model):
    title = models.CharField(max_length=200)
    slug = models.SlugField(unique_for_date='pub_date')
    body_html = models.TextField(blank=True)
    body_markdown = models.TextField()
    pub_date = models.DateTimeField('Date published')
    topics = models.ManyToManyField(Topic, blank=True)
    last_updated = models.DateTimeField(auto_now=True)
    enable_comments = models.BooleanField(default=False)
    has_code = models.BooleanField(default=False)
    PUB_STATUS = (
        (0, 'Draft'),
        (1, 'Published'),
    )
    status = models.IntegerField(choices=PUB_STATUS, default=0)
    meta_description = models.CharField(max_length=256, null=True, blank=True)
    TEMPLATES = (
        (0, 'default'),
    )
    template_name = models.IntegerField(choices=TEMPLATES, default=0)

    class Meta:
        ordering = ('-pub_date',)
        get_latest_by = 'pub_date'
        verbose_name_plural = 'entries'

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return "/src/%s" % self.slug

    def comment_period_open(self):
        return self.enable_comments and datetime.datetime.today() - datetime.timedelta(30) <= self.pub_date


    def get_images(self):
        return extract_images(self.body_html)

    @property
    def get_previous_published(self):
        return self.get_previous_by_pub_date(status__exact=1)

    @property
    def get_next_published(self):
        return self.get_next_by_pub_date(status__exact=1)

    'codehilite(css_class=highlight,linenums=False,guess_lang=True,use_pygments=True)'

    def save(self):
        md = image_url_replace(self.body_markdown)
        self.body_html = markdown.markdown(md, extensions=['markdown.extensions.codehilite(css_class=highlight,linenums=False)', 'markdown.extensions.fenced_code', 'markdown.extensions.attr_list','extra'], safe_mode=False)
        super(Entry, self).save()


def get_upload_path(self, filename):
    return "images/src/%s" % filename


class Book(models.Model):
    title = models.CharField(max_length=200)
    image = models.FileField(blank=True, null=True, upload_to=get_upload_path)
    slug = models.SlugField(unique_for_date='pub_date')
    body_html = models.TextField(blank=True)
    body_markdown = models.TextField()
    pub_date = models.DateTimeField('Date published')
    last_updated = models.DateTimeField(auto_now=True)
    PUB_STATUS = (
        (0, 'Draft'),
        (1, 'Published'),
    )
    status = models.IntegerField(choices=PUB_STATUS, default=0)
    meta_description = models.CharField(max_length=256, null=True, blank=True)

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

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return "/src/books/%s" % (self.slug)