"""
This module provides tests for :py:mod:`userdbs.models`.

"""
from __future__ import unicode_literals

from django.contrib.auth import get_user_model
from django.test import TestCase
from django.test.utils import override_settings

from osusers.models import User
from taskresults.models import TaskResult
from userdbs.models import DB_TYPES, DatabaseUser, UserDatabase

Customer = get_user_model()


@override_settings(
    CELERY_ALWAYS_EAGER=True,
    CELERY_CACHE_BACKEND='memory',
    BROKER_BACKEND='memory'
)
class TestCaseWithCeleryTasks(TestCase):
    pass


class DatabaseUserManagerTest(TestCaseWithCeleryTasks):
    """
    Test case for :py:class:`userdbs.models.DatabaseUserManager`.

    """
    def setUp(self):
        self.customer = Customer.objects.create_user(username='testcustomer')
        self.osuser = User.objects.create_user(customer=self.customer)
        TaskResult.objects.all().delete()

    def test_create_database_user_with_name(self):
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.pgsql, 'testname', 'secret')
        self.assertEqual(dbu.name, 'testname')
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.pgsql)
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'pgsql user creation')

    def test_create_database_user_with_name_no_commit(self):
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.pgsql, 'testname', 'secret', False)
        self.assertEqual(dbu.name, 'testname')
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.pgsql)
        self.assertFalse(TaskResult.objects.exists())

    def test_create_database_user_generate_name(self):
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.pgsql)
        self.assertEqual(dbu.name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.pgsql)
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'pgsql user creation')

    def test_create_database_user_multiple_generate_name(self):
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.mysql)
        self.assertEqual(dbu.name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.mysql)
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.mysql)
        self.assertEqual(dbu.name, '{user}db02'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.mysql)
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 2)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'mysql user creation')
        self.assertEqual(taskres[1].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[1].notes, 'mysql user creation')

    def test_create_database_user_multiple_gap_generate_name(self):
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.mysql)
        self.assertEqual(dbu.name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.mysql)
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.mysql)
        self.assertEqual(dbu.name, '{user}db02'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.mysql)
        DatabaseUser.objects.get(
            name='{user}db01'.format(user=self.osuser.username)).delete()
        dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.mysql)
        self.assertEqual(dbu.name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(dbu.osuser, self.osuser)
        self.assertEqual(dbu.db_type, DB_TYPES.mysql)
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 4)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'mysql user creation')
        self.assertEqual(taskres[1].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[1].notes, 'mysql user creation')
        self.assertEqual(taskres[2].creator, 'handle_dbuser_deleted')
        self.assertEqual(taskres[2].notes, 'mysql user deletion')
        self.assertEqual(taskres[3].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[3].notes, 'mysql user creation')


class DatabaseUserTest(TestCaseWithCeleryTasks):
    """
    Test case for :py:class:`userdbs.models.DatabaseUser`.

    """
    def setUp(self):
        self.customer = Customer.objects.create_user(username='testcustomer')
        self.osuser = User.objects.create_user(customer=self.customer)
        self.dbu = DatabaseUser.objects.create_database_user(
            self.osuser, DB_TYPES.pgsql)
        TaskResult.objects.all().delete()

    def test___str__(self):
        self.assertEqual(
            str(self.dbu),
            '{user}db01 (PostgreSQL for {user})'.format(
                user=self.osuser.username))

    def test_set_password_pgsql(self):
        self.dbu.set_password('secret')
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_password_set')
        self.assertEqual(taskres[0].notes, 'pgsql password change')

    def test_set_password_mysql(self):
        self.dbu.db_type = DB_TYPES.mysql
        self.dbu.save()
        self.dbu.set_password('secret')
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_password_set')
        self.assertEqual(taskres[0].notes, 'mysql password change')

    def test_delete_no_dbs(self):
        self.dbu.delete()
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_deleted')
        self.assertEqual(taskres[0].notes, 'pgsql user deletion')

    def test_delete_with_dbs(self):
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        dbid = db.id
        self.dbu.delete()
        self.assertFalse(UserDatabase.objects.filter(id=dbid).exists())
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 3)
        self.assertEqual(taskres[0].creator, 'handle_userdb_created')
        self.assertEqual(taskres[0].notes, 'pgsql database creation')
        self.assertEqual(taskres[1].creator, 'handle_userdb_deleted')
        self.assertEqual(taskres[1].notes, 'pgsql database deletion')
        self.assertEqual(taskres[2].creator, 'handle_dbuser_deleted')
        self.assertEqual(taskres[2].notes, 'pgsql user deletion')


class UserDatabaseManagerTest(TestCaseWithCeleryTasks):
    """
    Test case for :py:class:`userdbs.models.UserDatabaseManager`.

    """
    def setUp(self):
        self.customer = Customer.objects.create_user(username='testcustomer')
        self.osuser = User.objects.create_user(customer=self.customer)
        TaskResult.objects.all().delete()

    def _create_database_user(self, dbtype):
        self.dbu = DatabaseUser.objects.create_database_user(
            self.osuser, dbtype)
        TaskResult.objects.all().delete()

    def test_create_userdatabase_with_user_mysql(self):
        db = UserDatabase.objects.create_userdatabase_with_user(
            DB_TYPES.mysql, self.osuser)
        self.assertEqual(db.db_name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(db.db_user.name, '{user}db01'.format(
            user=self.osuser.username))
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 2)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'mysql user creation')
        self.assertEqual(taskres[1].creator, 'handle_userdb_created')
        self.assertEqual(taskres[1].notes, 'mysql database creation')

    def test_create_userdatabase_with_user_pgsql(self):
        db = UserDatabase.objects.create_userdatabase_with_user(
            DB_TYPES.pgsql, self.osuser)
        self.assertEqual(db.db_name, '{user}db01'.format(
            user=self.osuser.username))
        self.assertEqual(db.db_user.name, '{user}db01'.format(
            user=self.osuser.username))
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 2)
        self.assertEqual(taskres[0].creator, 'handle_dbuser_created')
        self.assertEqual(taskres[0].notes, 'pgsql user creation')
        self.assertEqual(taskres[1].creator, 'handle_userdb_created')
        self.assertEqual(taskres[1].notes, 'pgsql database creation')

    def test_create_userdatabase_given_name_no_new_write(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu, db_name='test')
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(db.db_name, 'test')
        TaskResult.objects.all().delete()
        db.save()
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 0)

    def test_create_userdatabase_given_name(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu, db_name='test')
        self.assertEqual(db.db_name, 'test')
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 1)
        self.assertEqual(db.db_name, 'test')

    def test_create_userdatabase_generate_name_no_commit(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu, commit=False)
        self.assertEqual(db.db_name, self.dbu.name)
        self.assertFalse(TaskResult.objects.all().exists())

    def test_create_userdatabase_generate_name(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, self.dbu.name)

    def test_create_userdatabase_multiple_generate_name(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, self.dbu.name)
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, '{user}_02'.format(user=self.dbu.name))

    def test_create_userdatabase_multiple_gap_generate_name(self):
        self._create_database_user(DB_TYPES.pgsql)
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, self.dbu.name)
        dbx = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(dbx.db_name, '{user}_02'.format(user=self.dbu.name))
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, '{user}_03'.format(user=self.dbu.name))
        dbx.delete()
        db = UserDatabase.objects.create_userdatabase(self.dbu)
        self.assertEqual(db.db_name, '{user}_02'.format(user=self.dbu.name))


class UserDatabaseTest(TestCaseWithCeleryTasks):
    """
    Test case for :py:class:`userdbs.models.UserDabase`.

    """
    def test___str__(self):
        customer = Customer.objects.create_user(username='testcustomer')
        osuser = User.objects.create_user(customer=customer)
        db = UserDatabase.objects.create_userdatabase_with_user(
            DB_TYPES.pgsql, osuser)
        self.assertEqual(
            str(db),
            '{user}db01 ({dbuser})'.format(
                user=osuser.username, dbuser=db.db_user))

    def test_delete_mysql_db(self):
        customer = Customer.objects.create_user(username='testcustomer')
        osuser = User.objects.create_user(customer=customer)
        TaskResult.objects.all().delete()
        db = UserDatabase.objects.create_userdatabase_with_user(
            DB_TYPES.mysql, osuser)
        db.delete()
        taskres = TaskResult.objects.all()
        self.assertEqual(len(taskres), 3)
        self.assertEqual(taskres[2].creator, 'handle_userdb_deleted')
        self.assertEqual(taskres[2].notes, 'mysql database deletion')