#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import parl
import unittest
import time
import threading

from parl.remote.master import Master
from parl.remote.worker import Worker
from parl.remote.client import disconnect
from parl.utils import _IS_WINDOWS


@parl.remote_class
class Actor(object):
    def __init__(self, x=10):
        self.x = x

    def check_local_file(self):
        return os.path.exists('./rom_files/pong.bin')


class TestSendFile(unittest.TestCase):
    def tearDown(self):
        disconnect()

    def test_send_file(self):
        port = 1239
        master = Master(port=port)
        th = threading.Thread(target=master.run)
        th.start()
        worker = Worker('localhost:{}'.format(port), 1)
        time.sleep(2)

        tmp_dir = 'rom_files'
        tmp_file = os.path.join(tmp_dir, 'pong.bin')
        os.system('mkdir {}'.format(tmp_dir))
        if _IS_WINDOWS:
            os.system('type NUL >> {}'.format(tmp_file))
        else:
            os.system('touch {}'.format(tmp_file))
        assert os.path.exists(tmp_file)
        parl.connect('localhost:{}'.format(port), distributed_files=[tmp_file])
        time.sleep(5)
        actor = Actor()
        for _ in range(10):
            if actor.check_local_file():
                break
            time.sleep(10)
        self.assertEqual(True, actor.check_local_file())
        del actor
        time.sleep(10)
        worker.exit()
        master.exit()

    def test_send_file2(self):
        port = 1240
        master = Master(port=port)
        th = threading.Thread(target=master.run)
        th.start()
        worker = Worker('localhost:{}'.format(port), 1)
        time.sleep(2)

        tmp_file = os.path.join('rom_files', 'no_pong.bin')
        self.assertRaises(Exception, parl.connect, 'localhost:{}'.format(port),
                          [tmp_file])

        worker.exit()
        master.exit()


if __name__ == '__main__':
    unittest.main()