#!/usr/bin/python2.5

import os

import PIL

from pytask.taskapp.utilities.helper import get_key

from django import forms

from pytask.taskapp.models import GENDER_CHOICES, Profile

from registration.forms import RegistrationFormUniqueEmail

from registration.models import RegistrationProfile

from pytask.taskapp.utilities.notification import create_notification

class UserProfileEditForm(forms.ModelForm):

    """Form used to edit the profile of a user"""

    class Meta:

        model = Profile

    def clean_photo(self):

        uploaded_photo = self.data.get('photo', None)

        prev_photo = self.instance.photo

        if uploaded_photo:

            if uploaded_photo.size > 1048576:

                raise forms.ValidationError('Images only smaller than 1MB allowed')

            tmp_im_path = '/tmp/'+get_key()

            tmp_file = open(tmp_im_path, 'w')

            tmp_file.write(uploaded_photo.read())

            tmp_file.close()

            try:

                PIL.Image.open(tmp_im_path)

            except IOError:

                raise forms.ValidationError('Image format unknown')

            os.remove(tmp_im_path)

            if prev_photo: os.remove(prev_photo.path)

            return uploaded_photo

        else:

            return prev_photo

class RegistrationFormCustom(RegistrationFormUniqueEmail):

    """Used instead of RegistrationForm used by default django-registration backend, this adds date of birth and gender to the default django-registration RegistrationForm"""

    dob = forms.DateField(help_text = "YYYY-MM-DD", required=True, label=u'date of birth')

    gender = forms.ChoiceField(choices = GENDER_CHOICES, required=True, label=u'gender')

    def save(self,profile_callback=None):

        new_user = RegistrationProfile.objects.create_inactive_user(username=self.cleaned_data['username'],password=self.cleaned_data['password1'],email=self.cleaned_data['email'])

        new_profile = Profile(user=new_user,dob=self.cleaned_data['dob'],gender=self.cleaned_data['gender'])

        new_profile.save()

        create_notification('NU',new_user)

        return new_user

def UserChoiceForm(choices, instance=None):

    """ take a list of users and return a choice form.

    """

    class myForm(forms.Form):

        user = forms.ChoiceField(choices, required=True)

    return myForm(instance) if instance else myForm()