# Copyright (c) 2014, Clemson University
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from django import forms
from django.core.exceptions import ValidationError
from django_sshkey.models import Key, UserKey
from django_sshkey.util import pubkey_parse

class ApplicationKeyForm(forms.ModelForm):
  key = forms.CharField(
    max_length=2000, required=True,
    widget=forms.Textarea(attrs={
      'cols': 72,
      'rows': 15,
      'placeholder': "Paste in the contents of your public key file here",
    })
  )

  def clean_key(self):
    key = self.cleaned_data['key']
    key = Key(key=key)
    key.full_clean()
    return key

  def save(self, commit=True):
    instance = super(ApplicationKeyForm, self).save(commit=False)
    if commit:
      basekey = self.cleaned_data['key']
      basekey.save()
      instance.basekey = basekey
      instance.save()
    return instance

class NamedKeyForm(ApplicationKeyForm):
  def clean(self):
    cleaned_data = super(NamedKeyForm, self).clean()
    if 'key' in cleaned_data and not cleaned_data.get('name'):
      pubkey = pubkey_parse(cleaned_data['key'].key)
      if not pubkey.comment:
        raise ValidationError('Name or key comment required')
      cleaned_data['name'] = pubkey.comment
    return cleaned_data

class UserKeyForm(NamedKeyForm):

  class Meta:
    model = UserKey
    fields = ['name', 'key']
    exclude = ['basekey']
    widgets = {
      'name': forms.TextInput(attrs={
        'size': 50,
        'placeholder': "username@hostname, or leave blank to use key comment",
      })
    }