# -*- coding: utf-8 -*-
""" Tests for the profile API. """

from django.test import TestCase
import ddt
from nose.tools import raises
from dateutil.parser import parse as parse_datetime
from user_api.api import account as account_api
from user_api.api import profile as profile_api
from user_api.models import UserProfile


@ddt.ddt
class ProfileApiTest(TestCase):

    USERNAME = u"frank-underwood"
    PASSWORD = u"ṕáśśẃőŕd"
    EMAIL = u"frank+underwood@example.com"

    def test_create_profile(self):
        # Create a new account, which should have an empty profile by default.
        account_api.create_account(self.USERNAME, self.PASSWORD, self.EMAIL)

        # Retrieve the profile, expecting default values
        profile = profile_api.profile_info(username=self.USERNAME)
        self.assertEqual(profile, {
            'username': self.USERNAME,
            'email': self.EMAIL,
            'full_name': u'',
        })

    def test_update_full_name(self):
        account_api.create_account(self.USERNAME, self.PASSWORD, self.EMAIL)
        profile_api.update_profile(self.USERNAME, full_name=u"ȻħȺɍłɇs")
        profile = profile_api.profile_info(username=self.USERNAME)
        self.assertEqual(profile['full_name'], u"ȻħȺɍłɇs")

    @raises(profile_api.ProfileInvalidField)
    @ddt.data('', 'a' * profile_api.FULL_NAME_MAX_LENGTH + 'a')
    def test_update_full_name_invalid(self, invalid_name):
        account_api.create_account(self.USERNAME, self.PASSWORD, self.EMAIL)
        profile_api.update_profile(self.USERNAME, full_name=invalid_name)

    @raises(profile_api.ProfileUserNotFound)
    def test_update_profile_no_user(self):
        profile_api.update_profile(self.USERNAME, full_name="test")

    def test_retrieve_profile_no_user(self):
        profile = profile_api.profile_info("does not exist")
        self.assertIs(profile, None)

    def test_record_name_change_history(self):
        account_api.create_account(self.USERNAME, self.PASSWORD, self.EMAIL)

        # Change the name once
        # Since the original name was an empty string, expect that the list
        # of old names is empty
        profile_api.update_profile(self.USERNAME, full_name="new name")
        meta = UserProfile.objects.get(user__username=self.USERNAME).get_meta()
        self.assertEqual(meta, {})

        # Change the name again and expect the new name is stored in the history
        profile_api.update_profile(self.USERNAME, full_name="another new name")
        meta = UserProfile.objects.get(user__username=self.USERNAME).get_meta()

        self.assertEqual(len(meta['old_names']), 1)
        name, rationale, timestamp = meta['old_names'][0]
        self.assertEqual(name, "new name")
        self.assertEqual(rationale, u"")
        self._assert_is_datetime(timestamp)

        # Change the name a third time and expect both names are stored in the history
        profile_api.update_profile(self.USERNAME, full_name="yet another new name")
        meta = UserProfile.objects.get(user__username=self.USERNAME).get_meta()

        self.assertEqual(len(meta['old_names']), 2)
        name, rationale, timestamp = meta['old_names'][1]
        self.assertEqual(name, "another new name")
        self.assertEqual(rationale, u"")
        self._assert_is_datetime(timestamp)

    def _assert_is_datetime(self, timestamp):
        if not timestamp:
            return False
        try:
            parse_datetime(timestamp)
        except ValueError:
            return False
        else:
            return True