# Copyright 2019 Amazon.com, Inc. or its affiliates. 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. A copy of
# the License is located at
#
#     http://aws.amazon.com/apache2.0/
#
# or in the 'license' file accompanying this file. This file 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.
from __future__ import absolute_import

import logging
import os
import platform
import shutil
import sys
import tempfile

import boto3
import pytest
from sagemaker import Session

from .utils import local_mode

logger = logging.getLogger(__name__)
logging.getLogger("boto").setLevel(logging.INFO)
logging.getLogger("boto3").setLevel(logging.INFO)
logging.getLogger("botocore").setLevel(logging.INFO)
logging.getLogger("factory.py").setLevel(logging.INFO)
logging.getLogger("auth.py").setLevel(logging.INFO)
logging.getLogger("connectionpool.py").setLevel(logging.INFO)


dir_path = os.path.dirname(os.path.realpath(__file__))


def pytest_addoption(parser):
    parser.addoption("--build-image", "-D", action="store_true")
    parser.addoption("--build-base-image", "-B", action="store_true")
    parser.addoption("--aws-id")
    parser.addoption("--instance-type", default="local")
    parser.addoption("--install-container-support", "-C", action="store_true")
    parser.addoption("--docker-base-name", default="sk-learn")
    parser.addoption("--region", default="us-west-2")
    parser.addoption("--framework-version", default="1.0-1")
    parser.addoption("--py-version", choices=["2", "3"], default=str(sys.version_info.major))
    parser.addoption("--processor", choices=["cpu"], default="cpu")
    # If not specified, will default to {framework-version}-{processor}-py{py-version}
    parser.addoption("--tag", default=None)


@pytest.fixture(scope="session", name="docker_base_name")
def fixture_docker_base_name(request):
    return request.config.getoption("--docker-base-name")


@pytest.fixture(scope="session", name="region")
def fixture_region(request):
    return request.config.getoption("--region")


@pytest.fixture(scope="session", name="framework_version")
def fixture_framework_version(request):
    return request.config.getoption("--framework-version")


@pytest.fixture(scope="session", name="py_version")
def fixture_py_version(request):
    return "py{}".format(int(request.config.getoption("--py-version")))


@pytest.fixture(scope="session", name="processor")
def fixture_processor(request):
    return request.config.getoption("--processor")


@pytest.fixture(scope="session", name="tag")
def fixture_tag(request, framework_version, processor, py_version):
    provided_tag = request.config.getoption("--tag")
    default_tag = "{}-{}-{}".format(framework_version, processor, py_version)
    return provided_tag if provided_tag else default_tag


@pytest.fixture(scope="session", name="docker_image")
def fixture_docker_image(docker_base_name, tag):
    return "{}:{}".format(docker_base_name, tag)


@pytest.fixture
def opt_ml():
    tmp = tempfile.mkdtemp()
    os.mkdir(os.path.join(tmp, "output"))

    # Docker cannot mount Mac OS /var folder properly see
    # https://forums.docker.com/t/var-folders-isnt-mounted-properly/9600
    opt_ml_dir = "/private{}".format(tmp) if platform.system() == "Darwin" else tmp
    yield opt_ml_dir

    shutil.rmtree(tmp, True)


@pytest.fixture(scope="session", name="install_container_support", autouse=True)
def fixture_install_container_support(request):
    install = request.config.getoption("--install-container-support")
    if install:
        local_mode.install_container_support()


@pytest.fixture(scope="session", name="build_base_image", autouse=True)
def fixture_build_base_image(request, framework_version, py_version, processor, tag, docker_base_name):
    build_base_image = request.config.getoption("--build-base-image")
    if build_base_image:
        return local_mode.build_base_image(
            framework_name=docker_base_name,
            framework_version=framework_version,
            py_version=py_version,
            base_image_tag=tag,
            processor=processor,
            cwd=os.path.join(dir_path, ".."),
        )

    return tag


@pytest.fixture(scope="session", name="build_image", autouse=True)
def fixture_build_image(request, framework_version, py_version, processor, tag, docker_base_name):
    build_image = request.config.getoption("--build-image")
    if build_image:
        return local_mode.build_image(
            framework_name=docker_base_name,
            framework_version=framework_version,
            py_version=py_version,
            processor=processor,
            tag=tag,
            cwd=os.path.join(dir_path, ".."),
        )

    return tag


@pytest.fixture(scope="session", name="sagemaker_session")
def fixture_sagemaker_session(region):
    return Session(boto_session=boto3.Session(region_name=region))


@pytest.fixture(name="aws_id", scope="session")
def fixture_aws_id(request):
    return request.config.getoption("--aws-id")


@pytest.fixture(name="instance_type", scope="session")
def fixture_instance_type(request):
    return request.config.getoption("--instance-type")


@pytest.fixture(name="docker_registry", scope="session")
def fixture_docker_registry(aws_id, region):
    return "{}.dkr.ecr.{}.amazonaws.com".format(aws_id, region)


@pytest.fixture(name="ecr_image", scope="session")
def fixture_ecr_image(docker_registry, docker_base_name, tag):
    return "{}/{}:{}".format(docker_registry, docker_base_name, tag)


@pytest.fixture(scope="session", name="dist_cpu_backend", params=["tcp", "gloo"])
def fixture_dist_cpu_backend(request):
    return request.param