from django.db import models
from django.contrib.auth.models import User

class Talk(models.Model):
    CATEGORIES = ( # Copied from https://foss.in/2006/cfp/delegates/stats.php
        ('OS', 'Operating Systems'),
        ('DT', 'Developer Tools and Languages'),
        ('WD', 'Web Development'),
        ('KD', 'Kernel Development'),
        ('OST', 'Open Standards'),
        ('SS', 'Servers and Services'),
        ('HPC', 'High Performance Computing'),
        ('ES', 'Embedded Systems'),
        ('DC', 'Desktop Computing'),
        ('EP', 'Education Projects'),
        ('TE', 'Telecom'),
        ('SOC', 'Social Aspects of FOSS'),
        ('BUS', 'Business and Commerce'),
        ('LOC', 'Localisation'),
        ('GOV', 'Government')
        )
    talk_name = models.CharField (maxlength=255)
    presentation_file = models.FileField (upload_to = 'fill-in-here') # Is it
                                        # possible to have a list of files?
    talk_status = models.BooleanField()
    category = models.CharField (choices=CATEGORIES)
                                 
    class Admin: pass
    
class UserProfile(models.Model):
    def __str__(self):
        return self.user.get_full_name()
    
    activation_key = models.CharField(maxlength=40)
    key_expires = models.DateTimeField() 
    user = models.OneToOneField(User)

    class Admin: pass
    
class Speaker(models.Model):
    user = models.ForeignKey(UserProfile)
    registered_talks = models.ManyToMany(Talk) 
    class Admin: pass