from django.db import models
from django.utils.encoding import force_text
from django.conf import settings
from django.template.defaultfilters import slugify
from taggit.managers import TaggableManager


class Book(models.Model):
    title = models.CharField(max_length=200)
    author_name = models.CharField(max_length=200)
    slug = models.CharField(max_length=50)
    year_pub = models.CharField(max_length=4, blank=True, null=True)
    read_date = models.DateTimeField()
    isbn = models.CharField(max_length=100, blank=True, null=True)
    body_html = models.TextField(null=True, blank=True)
    url = models.CharField(max_length=200, blank=True, null=True)
    tags = TaggableManager()
    RATINGS = (
        ('1', "1 Star"),
        ('2', "2 Stars"),
        ('3', "3 Stars"),
        ('4', "4 Stars"),
        ('5', "5 Stars"),
    )
    rating = models.CharField(max_length=1, choices=RATINGS, null=True)
    enable_comments = models.BooleanField(default=False)
    image = models.FileField(upload_to='book-covers/', null=True, blank=True)

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

    def __str__(self):
        return self.title

    def get_image_url(self):
        return '/media/%s' % (self.image)

    def admin_thumbnail(self):
        return force_text('<a href=""><img src="%s" width="100" style="width:100px"></a>' % (self.get_image_url()))
    admin_thumbnail.allow_tags = True
    admin_thumbnail.short_description = 'Thumbnail'

    def save(self, *args, **kwargs):
        self.slug = slugify(self.title[:50])
        super(Book, self).save()


class BookHighlight(models.Model):
    book = models.ForeignKey(Book)
    page = models.PositiveSmallIntegerField(null=True)
    location = models.PositiveSmallIntegerField(null=True)
    date_added = models.DateTimeField()
    body_markdown = models.TextField()

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

    def __str__(self):
        return "%s%s" % (self.book.title, self.id)


class BookNote(BookHighlight):
    pass