# coding: utf-8

from django.db import models

class Author(models.Model):

    name = models.CharField(max_length=100)

    age = models.IntegerField()

    friends = models.ManyToManyField('self', blank=True)

    def __unicode__(self):

        return self.name

class Publisher(models.Model):

    name = models.CharField(max_length=255)

    num_awards = models.IntegerField()

    def __unicode__(self):

        return self.name

class Book(models.Model):

    isbn = models.CharField(max_length=9)

    name = models.CharField(max_length=255)

    pages = models.IntegerField()

    rating = models.FloatField()

    price = models.DecimalField(decimal_places=2, max_digits=6)

    authors = models.ManyToManyField(Author)

    contact = models.ForeignKey(Author, related_name='book_contact_set')

    publisher = models.ForeignKey(Publisher)

    pubdate = models.DateField()

    class Meta:

        ordering = ('name',)

    def __unicode__(self):

        return self.name

class Store(models.Model):

    name = models.CharField(max_length=255)

    books = models.ManyToManyField(Book)

    original_opening = models.DateTimeField()

    friday_night_closing = models.TimeField()

    def __unicode__(self):

        return self.name

class Entries(models.Model):

    EntryID = models.AutoField(primary_key=True, db_column='Entry ID')

    Entry = models.CharField(unique=True, max_length=50)

    Exclude = models.BooleanField()

class Clues(models.Model):

    ID = models.AutoField(primary_key=True)

    EntryID = models.ForeignKey(Entries, verbose_name='Entry', db_column = 'Entry ID')

    Clue = models.CharField(max_length=150)

class HardbackBook(Book):

    weight = models.FloatField()

    def __unicode__(self):

        return "%s (hardback): %s" % (self.name, self.weight)