"""
This module provides tests for :py:mod:`osusers.forms`.

"""
from __future__ import absolute_import, unicode_literals

from mock import MagicMock, Mock, patch

from django import forms
from django.core.urlresolvers import reverse
from django.test import TestCase

from django.contrib.auth import get_user_model

from passlib.hash import sha512_crypt

from osusers.forms import (
    AddSshPublicKeyForm,
    ChangeOsUserPasswordForm,
    DUPLICATE_SSH_PUBLIC_KEY_FOR_USER,
    EditSshPublicKeyCommentForm,
    INVALID_SSH_PUBLIC_KEY,
)

Customer = get_user_model()

from osusers.models import SshPublicKey, User


class AddSshPublicKeyFormTest(TestCase):
    """
    Test for :py:class:`osusers.forms.AddSshPublicKeyForm`.

    """

    def _setup_hostingpackage(self):
        customer = Customer.objects.create_user('test')
        user = User.objects.create_user(customer=customer)
        self.hostingpackage = Mock(id=42, osuser=user)

    def test_constructor_needs_hostingpackage(self):
        instance = MagicMock()
        with self.assertRaises(KeyError) as ke:
            AddSshPublicKeyForm(instance)
        self.assertEqual(ke.exception.args[0], 'hostingpackage')

    def test_constructor(self):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        self.assertTrue(hasattr(form, 'osuser'))
        self.assertEqual(form.osuser, self.hostingpackage.osuser)
        self.assertTrue(hasattr(form, 'helper'))
        self.assertEqual(form.helper.form_action, reverse(
            'add_ssh_key', kwargs={'package': self.hostingpackage.id}))
        self.assertIn('publickeytext', form.fields)
        self.assertEqual(form.helper.inputs[0].name, 'submit')

    @patch('osusers.forms.SshPublicKey.objects.parse_keytext')
    def test_clean_publickeytext_invalid(self, parse_keytext):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        form.cleaned_data = {'publickeytext': 'a bad key'}
        parse_keytext.side_effect = ValueError
        with self.assertRaises(forms.ValidationError) as ve:
            form.clean_publickeytext()
        self.assertEqual(ve.exception.message, INVALID_SSH_PUBLIC_KEY)

    @patch('osusers.forms.SshPublicKey.objects.parse_keytext')
    def test_clean_publickeytext_valid(self, parse_keytext):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        form.cleaned_data = {'publickeytext': 'good key comment'}
        retval = form.clean_publickeytext()
        self.assertEqual(retval, 'good key comment')

    def test_clean_none(self):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        form.cleaned_data = {'publickeytext': None}
        form.clean()
        self.assertIsNone(form.cleaned_data['publickeytext'])

    @patch('osusers.forms.SshPublicKey.objects.parse_keytext')
    def test_clean_fresh(self, parse_keytext):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        sshpubkey = 'good key comment'
        form.cleaned_data = {'publickeytext': sshpubkey}
        parse_keytext.return_value = sshpubkey.split(' ')
        form.clean()
        self.assertEqual(
            form.cleaned_data['publickeytext'], 'good key comment')

    @patch('osusers.forms.SshPublicKey.objects.parse_keytext')
    def test_clean_duplicate(self, parse_keytext):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        SshPublicKey.objects.create(
            user=self.hostingpackage.osuser, algorithm='good', data='key',
            comment='comment')
        sshpubkey = 'good key comment'
        form.cleaned_data = {'publickeytext': sshpubkey}
        parse_keytext.return_value = sshpubkey.split(' ')
        form.clean()
        self.assertIn('publickeytext', form.errors)
        self.assertIn(
            DUPLICATE_SSH_PUBLIC_KEY_FOR_USER,
            form.errors['publickeytext'])

    @patch('osusers.admin.SshPublicKey.objects.parse_keytext')
    def test_save(self, parse_keytext):
        self._setup_hostingpackage()
        instance = MagicMock()
        form = AddSshPublicKeyForm(
            instance, hostingpackage=self.hostingpackage)
        sshpubkey = 'good key comment'
        form.cleaned_data = {'publickeytext': sshpubkey}
        parse_keytext.return_value = sshpubkey.split(' ')
        retval = form.save()
        self.assertTrue(isinstance(retval, SshPublicKey))
        self.assertEqual(retval.algorithm, 'good')
        self.assertEqual(retval.data, 'key')
        self.assertEqual(retval.comment, 'comment')


class ChangeOsUserPasswordFormTest(TestCase):
    """
    Test for :py:class:`osusers.forms.ChangeOsUserPasswordForm`.

    """

    def _setup_user(self):
        customer = Customer.objects.create_user('test')
        self.user = User.objects.create_user(customer=customer)

    def test_constructor(self):
        self._setup_user()
        form = ChangeOsUserPasswordForm(instance=self.user)
        self.assertTrue(hasattr(form, 'instance'))
        self.assertEqual(form.instance, self.user)
        self.assertTrue(hasattr(form, 'helper'))
        self.assertEqual(form.helper.form_action, reverse(
            'set_osuser_password', kwargs={'slug': self.user.username}))
        self.assertEqual(form.helper.inputs[0].name, 'submit')

    def test_save(self):
        self._setup_user()
        form = ChangeOsUserPasswordForm(instance=self.user)
        form.cleaned_data = {'password1': 'test'}
        user = form.save()
        self.assertTrue(sha512_crypt.verify('test', user.shadow.passwd))


class EditSshPublicKeyCommentFormTest(TestCase):
    """
    Test for :py:class:`osusers.forms.EditSshPublicKeyCommentForm`.

    """

    def _setup_hostingpackage(self):
        customer = Customer.objects.create_user('test')
        user = User.objects.create_user(customer=customer)
        self.hostingpackage = Mock(id=42, osuser=user)

    def test_constructor_needs_hostingpackage(self):
        instance = MagicMock()
        with self.assertRaises(KeyError) as ke:
            EditSshPublicKeyCommentForm(instance)
        self.assertEqual(ke.exception.args[0], 'hostingpackage')

    def test_constructor(self):
        self._setup_hostingpackage()
        instance = MagicMock(id=1)
        form = EditSshPublicKeyCommentForm(
            instance=instance, hostingpackage=self.hostingpackage)
        self.assertTrue(hasattr(form, 'osuser'))
        self.assertEqual(form.osuser, self.hostingpackage.osuser)
        self.assertIn('comment', form.fields)
        self.assertTrue(hasattr(form, 'helper'))
        self.assertEqual(form.helper.form_action, reverse(
            'edit_ssh_key_comment',
            kwargs={'package': self.hostingpackage.id, 'pk': instance.id}))
        self.assertEqual(form.helper.inputs[0].name, 'submit')