# -*- coding: utf-8 -*-
from __future__ import (absolute_import, division, print_function,
                        unicode_literals)

from click.testing import CliRunner
from rq import get_failed_queue, Queue
from rq.compat import is_python_version
from rq.job import Job
from rq.cli import main
from rq.cli.helpers import read_config_file

from tests import RQTestCase
from tests.fixtures import div_by_zero

if is_python_version((2, 7), (3, 2)):
    from unittest import TestCase
else:
    from unittest2 import TestCase  # noqa


class TestCommandLine(TestCase):
    def test_config_file(self):
        settings = read_config_file("tests.dummy_settings")
        self.assertIn("REDIS_HOST", settings)
        self.assertEqual(settings['REDIS_HOST'], "testhost.example.com")


class TestRQCli(RQTestCase):

    def assert_normal_execution(self, result):
        if result.exit_code == 0:
            return True
        else:
            print("Non normal execution")
            print("Exit Code: {}".format(result.exit_code))
            print("Output: {}".format(result.output))
            print("Exception: {}".format(result.exception))
            self.assertEqual(result.exit_code, 0)

    """Test rq_cli script"""
    def setUp(self):
        super(TestRQCli, self).setUp()
        db_num = self.testconn.connection_pool.connection_kwargs['db']
        self.redis_url = 'redis://127.0.0.1:6379/%d' % db_num

        job = Job.create(func=div_by_zero, args=(1, 2, 3))
        job.origin = 'fake'
        job.save()
        get_failed_queue().quarantine(job, Exception('Some fake error'))  # noqa

    def test_empty(self):
        """rq empty -u <url> failed"""
        runner = CliRunner()
        result = runner.invoke(main, ['empty', '-u', self.redis_url, 'failed'])
        self.assert_normal_execution(result)
        self.assertEqual(result.output.strip(), '1 jobs removed from failed queue')

    def test_requeue(self):
        """rq requeue -u <url> --all"""
        runner = CliRunner()
        result = runner.invoke(main, ['requeue', '-u', self.redis_url, '--all'])
        self.assert_normal_execution(result)
        self.assertEqual(result.output.strip(), 'Requeueing 1 jobs from failed queue')

    def test_info(self):
        """rq info -u <url>"""
        runner = CliRunner()
        result = runner.invoke(main, ['info', '-u', self.redis_url])
        self.assert_normal_execution(result)
        self.assertIn('1 queues, 1 jobs total', result.output)

    def test_worker(self):
        """rq worker -u <url> -b"""
        runner = CliRunner()
        result = runner.invoke(main, ['worker', '-u', self.redis_url, '-b'])
        self.assert_normal_execution(result)

    def test_exception_handlers(self):
        """rq worker -u <url> -b --exception-handler <handler>"""
        q = Queue()
        failed_q = get_failed_queue()
        failed_q.empty()

        runner = CliRunner()

        # If exception handler is not given, failed job goes to FailedQueue
        q.enqueue(div_by_zero)
        runner.invoke(main, ['worker', '-u', self.redis_url, '-b'])
        self.assertEquals(failed_q.count, 1)

        # Black hole exception handler doesn't add failed jobs to FailedQueue
        q.enqueue(div_by_zero)
        runner.invoke(main, ['worker', '-u', self.redis_url, '-b',
                             '--exception-handler', 'tests.fixtures.black_hole'])
        self.assertEquals(failed_q.count, 1)

    def test_suspend_and_resume(self):
        """rq suspend -u <url>
           rq resume -u <url>
        """
        runner = CliRunner()
        result = runner.invoke(main, ['suspend', '-u', self.redis_url])
        self.assert_normal_execution(result)

        result = runner.invoke(main, ['resume', '-u', self.redis_url])
        self.assert_normal_execution(result)

    def test_suspend_with_ttl(self):
        """rq suspend -u <url> --duration=2
        """
        runner = CliRunner()
        result = runner.invoke(main, ['suspend', '-u', self.redis_url, '--duration', 1])
        self.assert_normal_execution(result)

    def test_suspend_with_invalid_ttl(self):
        """rq suspend -u <url> --duration=0
        """
        runner = CliRunner()
        result = runner.invoke(main, ['suspend', '-u', self.redis_url, '--duration', 0])

        self.assertEqual(result.exit_code, 1)
        self.assertIn("Duration must be an integer greater than 1", result.output)