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

# Create your models here.
class BuyableType(models.Model):
	name = models.CharField(max_length=100)
	
	def __unicode__(self):
		return self.name


class Buyable(models.Model):
	name = models.CharField(max_length=100)
	price = models.FloatField()
	image = models.ImageField(upload_to='img/buyable/')
	deposit = models.FloatField()
	description = models.TextField()
	buyableType = models.ManyToManyField(BuyableType)
	
	def __unicode__(self):
		return "%s (%s EUR/%s Pfand)" % (self.name, self.price, self.deposit)

class Purchase(models.Model):
	user = models.ForeignKey(User)
	dateTime = models.DateTimeField()
	price = models.FloatField()
	isDeposit = models.BooleanField()
	buyable = models.ForeignKey(Buyable)
	
	def __unicode__(self):
		return "%s%s, %s by %s" % (self.buyable.name, self.isDeposit and " (deposit)" or "", self.price, self.user)
	
	def create(self, buyable, isDeposit=None):
		"""constructor"""
		if isDeposit is not None:
			self.isDeposit = isDeposit
		self.dateTime = datetime.datetime.now()
		self.buyable = buyable
		if self.isDeposit:
			self.price = buyable.deposit
		else:
			self.price = buyable.price
	def save(self, *args, **kwargs):
		profile = self.user.get_profile()
		if self.id == None:
			# new item, get it!
			profile.balance -= self.price
			profile.save()
		super(Purchase, self).save(*args, **kwargs)