# -*- 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 asyncio
import uuid


from gns3server.modules.vpcs import VPCS
from gns3server.modules.vpcs.vpcs_error import VPCSError
from gns3server.modules.project_manager import ProjectManager


def test_get_mac_id(loop, project, port_manager):
    # Cleanup the VPCS object
    VPCS._instance = None
    vpcs = VPCS.instance()
    vpcs.port_manager = port_manager
    vm1_uuid = str(uuid.uuid4())
    vm2_uuid = str(uuid.uuid4())
    vm3_uuid = str(uuid.uuid4())
    loop.run_until_complete(vpcs.create_vm("PC 1", project.uuid, vm1_uuid))
    loop.run_until_complete(vpcs.create_vm("PC 2", project.uuid, vm2_uuid))
    assert vpcs.get_mac_id(vm1_uuid) == 0
    assert vpcs.get_mac_id(vm1_uuid) == 0
    assert vpcs.get_mac_id(vm2_uuid) == 1
    loop.run_until_complete(vpcs.delete_vm(vm1_uuid))
    loop.run_until_complete(vpcs.create_vm("PC 3", project.uuid, vm3_uuid))
    assert vpcs.get_mac_id(vm3_uuid) == 0


def test_get_mac_id_multiple_project(loop, port_manager):
    # Cleanup the VPCS object
    VPCS._instance = None
    vpcs = VPCS.instance()
    vpcs.port_manager = port_manager
    vm1_uuid = str(uuid.uuid4())
    vm2_uuid = str(uuid.uuid4())
    vm3_uuid = str(uuid.uuid4())
    project1 = ProjectManager.instance().create_project()
    project2 = ProjectManager.instance().create_project()
    loop.run_until_complete(vpcs.create_vm("PC 1", project1.uuid, vm1_uuid))
    loop.run_until_complete(vpcs.create_vm("PC 2", project1.uuid, vm2_uuid))
    loop.run_until_complete(vpcs.create_vm("PC 2", project2.uuid, vm3_uuid))
    assert vpcs.get_mac_id(vm1_uuid) == 0
    assert vpcs.get_mac_id(vm2_uuid) == 1
    assert vpcs.get_mac_id(vm3_uuid) == 0


def test_get_mac_id_no_id_available(loop, project, port_manager):
    # Cleanup the VPCS object
    VPCS._instance = None
    vpcs = VPCS.instance()
    vpcs.port_manager = port_manager
    with pytest.raises(VPCSError):
        for i in range(0, 256):
            vm_uuid = str(uuid.uuid4())
            loop.run_until_complete(vpcs.create_vm("PC {}".format(i), project.uuid, vm_uuid))
            assert vpcs.get_mac_id(vm_uuid) == i