# -*- coding: utf-8 -*-
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import pytest
import sys
import os
from tests.utils import asyncio_patch
from unittest.mock import patch


@pytest.fixture(scope="function")
def vm(http_compute, project, on_gns3vm):
    response = http_compute.post("/projects/{project_id}/nat/nodes".format(project_id=project.id), {"name": "Nat 1"})
    assert response.status == 201
    return response.json


@pytest.yield_fixture(autouse=True)
def mock_ubridge():
    """
    Avoid all interaction with ubridge
    """
    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat._start_ubridge"):
        with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat._add_ubridge_connection"):
            with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat._delete_ubridge_connection"):
                yield


def test_nat_create(http_compute, project, on_gns3vm):
    response = http_compute.post("/projects/{project_id}/nat/nodes".format(project_id=project.id), {"name": "Nat 1"}, example=True)
    assert response.status == 201
    assert response.route == "/projects/{project_id}/nat/nodes"
    assert response.json["name"] == "Nat 1"
    assert response.json["project_id"] == project.id


def test_nat_get(http_compute, project, vm):
    response = http_compute.get("/projects/{project_id}/nat/nodes/{node_id}".format(project_id=vm["project_id"], node_id=vm["node_id"]), example=True)
    assert response.status == 200
    assert response.route == "/projects/{project_id}/nat/nodes/{node_id}"
    assert response.json["name"] == "Nat 1"
    assert response.json["project_id"] == project.id
    assert response.json["status"] == "started"


def test_nat_nio_create_udp(http_compute, vm):
    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.add_nio"):
        response = http_compute.post("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]), {"type": "nio_udp",
                                                                                                                                                                      "lport": 4242,
                                                                                                                                                                      "rport": 4343,
                                                                                                                                                                      "rhost": "127.0.0.1"},
                                     example=True)
    assert response.status == 201
    assert response.route == r"/projects/{project_id}/nat/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio"
    assert response.json["type"] == "nio_udp"


def test_nat_nio_update_udp(http_compute, vm):
    http_compute.post("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]), {"type": "nio_udp",
                                                                                                                                                       "lport": 4242,
                                                                                                                                                       "rport": 4343,
                                                                                                                                                       "rhost": "127.0.0.1"})
    response = http_compute.put("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]),
                                {
                                    "type": "nio_udp",
                                    "lport": 4242,
                                    "rport": 4343,
                                    "rhost": "127.0.0.1",
                                    "filters": {}},
                                example=True)
    assert response.status == 201, response.body.decode()
    assert response.route == r"/projects/{project_id}/nat/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio"
    assert response.json["type"] == "nio_udp"


def test_nat_delete_nio(http_compute, vm):
    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.add_nio"):
        http_compute.post("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]), {"type": "nio_udp",
                                                                                                                                                           "lport": 4242,
                                                                                                                                                           "rport": 4343,
                                                                                                                                                           "rhost": "127.0.0.1"})
    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.remove_nio") as mock_remove_nio:
        response = http_compute.delete("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]), example=True)
        assert mock_remove_nio.called
    assert response.status == 204
    assert response.route == r"/projects/{project_id}/nat/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio"


def test_nat_delete(http_compute, vm):
    response = http_compute.delete("/projects/{project_id}/nat/nodes/{node_id}".format(project_id=vm["project_id"], node_id=vm["node_id"]), example=True)
    assert response.status == 204


def test_nat_update(http_compute, vm, tmpdir):
    response = http_compute.put("/projects/{project_id}/nat/nodes/{node_id}".format(project_id=vm["project_id"], node_id=vm["node_id"]), {
        "name": "test"
    },
        example=True)
    assert response.status == 200
    assert response.json["name"] == "test"


def test_nat_start_capture(http_compute, vm):

    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.start_capture") as start_capture:
        params = {"capture_file_name": "test.pcap", "data_link_type": "DLT_EN10MB"}
        response = http_compute.post("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/start_capture".format(project_id=vm["project_id"], node_id=vm["node_id"]), body=params, example=True)
        assert response.status == 200
        assert start_capture.called
        assert "test.pcap" in response.json["pcap_file_path"]


def test_nat_stop_capture(http_compute, vm):

    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.stop_capture") as stop_capture:
        response = http_compute.post("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/stop_capture".format(project_id=vm["project_id"], node_id=vm["node_id"]), example=True)
        assert response.status == 204
        assert stop_capture.called


def test_nat_pcap(http_compute, vm, project):

    with asyncio_patch("gns3server.compute.builtin.nodes.nat.Nat.get_nio"):
        with asyncio_patch("gns3server.compute.builtin.Builtin.stream_pcap_file"):
            response = http_compute.get("/projects/{project_id}/nat/nodes/{node_id}/adapters/0/ports/0/pcap".format(project_id=project.id, node_id=vm["node_id"]), raw=True)
            assert response.status == 200