# Copyright 2018-2020 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.
import os
import random

import pytest

import util

EI_SUPPORTED_REGIONS = ["us-east-1", "us-east-2", "us-west-2",
                        "eu-west-1", "ap-northeast-1", "ap-northeast-2"]


@pytest.fixture(params=os.environ["TEST_EI_VERSIONS"].split(","))
def version(request):
    return request.param


@pytest.fixture
def repo(request):
    return request.config.getoption("--repo") or "sagemaker-tensorflow-serving-eia"


@pytest.fixture
def tag(request, version):
    return request.config.getoption("--tag") or f"{version}-cpu"


@pytest.fixture
def image_uri(registry, region, repo, tag):
    return util.image_uri(registry, region, repo, tag)


@pytest.fixture(params=os.environ["TEST_EI_INSTANCE_TYPES"].split(","))
def instance_type(request, region):
    return request.param


@pytest.fixture(scope="module")
def accelerator_type(request):
    return request.config.getoption("--accelerator-type") or "ml.eia1.medium"


@pytest.fixture(scope="session")
def model_data(region):
    return ("s3://sagemaker-sample-data-{}/tensorflow/model"
            "/resnet/resnet_50_v2_fp32_NCHW.tar.gz").format(region)


@pytest.fixture
def input_data():
    return {"instances": [[[[random.random() for _ in range(3)] for _ in range(3)]]]}


@pytest.fixture
def skip_if_no_accelerator(accelerator_type):
    if accelerator_type is None:
        pytest.skip("Skipping because accelerator type was not provided")


@pytest.fixture
def skip_if_non_supported_ei_region(region):
    if region not in EI_SUPPORTED_REGIONS:
        pytest.skip("EI is not supported in {}".format(region))


@pytest.mark.skip_if_non_supported_ei_region()
@pytest.mark.skip_if_no_accelerator()
def test_invoke_endpoint(boto_session, sagemaker_client, sagemaker_runtime_client,
                         model_name, model_data, image_uri, instance_type, accelerator_type,
                         input_data):
    util.create_and_invoke_endpoint(boto_session, sagemaker_client,
                                    sagemaker_runtime_client, model_name, model_data, image_uri,
                                    instance_type, accelerator_type, input_data)