import psutil

from catfish.project import Project
from catfish.utils.processes import is_process_running
from catfish.worker import BASE_SOCKET_DIR
from catfish.worker.server import PayloadType, read_logs_for_process, send_to_server
from tests import BaseWorkerTestCase


class WorkerServerTestCase(BaseWorkerTestCase):
    def test_ping(self):
        response = send_to_server(PayloadType.PING, {})
        self.assertEqual(response, {"ping": "pong"})


class ProcessWorkerTestCase(BaseWorkerTestCase):
    def setUp(self):
        super().setUp()
        self.project = Project(self.EXAMPLE_DIR)
        self.process = self.project.get_process("bg")

    def test_server_creates_process(self):
        response = send_to_server(
            PayloadType.PROCESS,
            {"path": str(self.project.root), "process": str(self.process.name)},
        )
        self.assertTrue(is_process_running(response["pid"]))

    def test_additional_environment(self):
        response = send_to_server(
            PayloadType.PROCESS,
            {"path": str(self.project.root), "process": str(self.process.name)},
        )
        env = psutil.Process(response["pid"]).environ()
        self.assertEqual(env["PYTHONUNBUFFERED"], "1")
        self.assertEqual(env["CATFISH_IDENT"], self.process.ident)
        path_dirs = env["PATH"].split(":")
        for path in self.project.get_extra_path():
            self.assertIn(str(path), path_dirs)


class ProcessLogsTestCase(BaseWorkerTestCase):
    def setUp(self):
        super().setUp()
        self.project = Project(self.EXAMPLE_DIR)
        self.process = self.project.get_process("bg")

    def test_creates_socket(self):
        send_to_server(
            PayloadType.PROCESS,
            {"path": str(self.project.root), "process": str(self.process.name)},
        )
        stdout_socket = BASE_SOCKET_DIR.joinpath(self.process.logs_socket)
        self.assertTrue(stdout_socket.exists())

    def test_gets_logs(self):
        send_to_server(
            PayloadType.PROCESS,
            {"path": str(self.project.root), "process": str(self.process.name)},
        )
        stdout_iter = read_logs_for_process(self.process)
        for i in range(3):
            self.assertEqual(next(stdout_iter), "Round {}".format(i))