import datetime
import uuid

import boto3
from botocore.exceptions import ClientError
import sure  # noqa # pylint: disable=unused-import

from moto import mock_sagemaker
from moto.sts.models import ACCOUNT_ID
import pytest

TEST_REGION_NAME = "us-east-1"
TEST_ROLE_ARN = "arn:aws:iam::{}:role/FakeRole".format(ACCOUNT_ID)
GENERIC_TAGS_PARAM = [
    {"Key": "newkey1", "Value": "newval1"},
    {"Key": "newkey2", "Value": "newval2"},
]
TEST_MODEL_NAME = "MyModel"
TEST_ENDPOINT_NAME = "MyEndpoint"
TEST_ENDPOINT_CONFIG_NAME = "MyEndpointConfig"
TEST_PRODUCTION_VARIANTS = [
    {
        "VariantName": "MyProductionVariant",
        "ModelName": TEST_MODEL_NAME,
        "InitialInstanceCount": 1,
        "InstanceType": "ml.t2.medium",
    },
]


@pytest.fixture
def sagemaker_client():
    return boto3.client("sagemaker", region_name=TEST_REGION_NAME)


@mock_sagemaker
def test_create_endpoint_config(sagemaker_client):
    with pytest.raises(ClientError) as e:
        sagemaker_client.create_endpoint_config(
            EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME,
            ProductionVariants=TEST_PRODUCTION_VARIANTS,
        )
    assert e.value.response["Error"]["Message"].startswith("Could not find model")

    _create_model(sagemaker_client, TEST_MODEL_NAME)
    resp = sagemaker_client.create_endpoint_config(
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME,
        ProductionVariants=TEST_PRODUCTION_VARIANTS,
    )
    resp["EndpointConfigArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint-config/{}$".format(
            TEST_ENDPOINT_CONFIG_NAME
        )
    )

    resp = sagemaker_client.describe_endpoint_config(
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME
    )
    resp["EndpointConfigArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint-config/{}$".format(
            TEST_ENDPOINT_CONFIG_NAME
        )
    )
    resp["EndpointConfigName"].should.equal(TEST_ENDPOINT_CONFIG_NAME)
    resp["ProductionVariants"].should.equal(TEST_PRODUCTION_VARIANTS)


@mock_sagemaker
def test_delete_endpoint_config(sagemaker_client):
    _create_model(sagemaker_client, TEST_MODEL_NAME)
    resp = sagemaker_client.create_endpoint_config(
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME,
        ProductionVariants=TEST_PRODUCTION_VARIANTS,
    )
    resp["EndpointConfigArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint-config/{}$".format(
            TEST_ENDPOINT_CONFIG_NAME
        )
    )

    resp = sagemaker_client.describe_endpoint_config(
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME
    )
    resp["EndpointConfigArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint-config/{}$".format(
            TEST_ENDPOINT_CONFIG_NAME
        )
    )

    sagemaker_client.delete_endpoint_config(
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME
    )
    with pytest.raises(ClientError) as e:
        sagemaker_client.describe_endpoint_config(
            EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME
        )
    assert e.value.response["Error"]["Message"].startswith(
        "Could not find endpoint configuration"
    )

    with pytest.raises(ClientError) as e:
        sagemaker_client.delete_endpoint_config(
            EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME
        )
    assert e.value.response["Error"]["Message"].startswith(
        "Could not find endpoint configuration"
    )


@mock_sagemaker
def test_create_endpoint_invalid_instance_type(sagemaker_client):
    _create_model(sagemaker_client, TEST_MODEL_NAME)

    instance_type = "InvalidInstanceType"
    production_variants = TEST_PRODUCTION_VARIANTS
    production_variants[0]["InstanceType"] = instance_type

    with pytest.raises(ClientError) as e:
        sagemaker_client.create_endpoint_config(
            EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME,
            ProductionVariants=production_variants,
        )
    assert e.value.response["Error"]["Code"] == "ValidationException"
    expected_message = "Value '{}' at 'instanceType' failed to satisfy constraint: Member must satisfy enum value set: [".format(
        instance_type
    )
    assert expected_message in e.value.response["Error"]["Message"]


@mock_sagemaker
def test_create_endpoint(sagemaker_client):
    with pytest.raises(ClientError) as e:
        sagemaker_client.create_endpoint(
            EndpointName=TEST_ENDPOINT_NAME,
            EndpointConfigName="NonexistentEndpointConfig",
        )
    assert e.value.response["Error"]["Message"].startswith(
        "Could not find endpoint configuration"
    )

    _create_model(sagemaker_client, TEST_MODEL_NAME)

    _create_endpoint_config(
        sagemaker_client, TEST_ENDPOINT_CONFIG_NAME, TEST_MODEL_NAME
    )

    resp = sagemaker_client.create_endpoint(
        EndpointName=TEST_ENDPOINT_NAME,
        EndpointConfigName=TEST_ENDPOINT_CONFIG_NAME,
        Tags=GENERIC_TAGS_PARAM,
    )
    resp["EndpointArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint/{}$".format(TEST_ENDPOINT_NAME)
    )

    resp = sagemaker_client.describe_endpoint(EndpointName=TEST_ENDPOINT_NAME)
    resp["EndpointArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint/{}$".format(TEST_ENDPOINT_NAME)
    )
    resp["EndpointName"].should.equal(TEST_ENDPOINT_NAME)
    resp["EndpointConfigName"].should.equal(TEST_ENDPOINT_CONFIG_NAME)
    resp["EndpointStatus"].should.equal("InService")
    assert isinstance(resp["CreationTime"], datetime.datetime)
    assert isinstance(resp["LastModifiedTime"], datetime.datetime)
    resp["ProductionVariants"][0]["VariantName"].should.equal("MyProductionVariant")

    resp = sagemaker_client.list_tags(ResourceArn=resp["EndpointArn"])
    assert resp["Tags"] == GENERIC_TAGS_PARAM


@mock_sagemaker
def test_delete_endpoint(sagemaker_client):
    _set_up_sagemaker_resources(
        sagemaker_client, TEST_ENDPOINT_NAME, TEST_ENDPOINT_CONFIG_NAME, TEST_MODEL_NAME
    )

    sagemaker_client.delete_endpoint(EndpointName=TEST_ENDPOINT_NAME)
    with pytest.raises(ClientError) as e:
        sagemaker_client.describe_endpoint(EndpointName=TEST_ENDPOINT_NAME)
    assert e.value.response["Error"]["Message"].startswith("Could not find endpoint")

    with pytest.raises(ClientError) as e:
        sagemaker_client.delete_endpoint(EndpointName=TEST_ENDPOINT_NAME)
    assert e.value.response["Error"]["Message"].startswith("Could not find endpoint")


@mock_sagemaker
def test_add_tags_endpoint(sagemaker_client):
    _set_up_sagemaker_resources(
        sagemaker_client, TEST_ENDPOINT_NAME, TEST_ENDPOINT_CONFIG_NAME, TEST_MODEL_NAME
    )

    resource_arn = f"arn:aws:sagemaker:{TEST_REGION_NAME}:{ACCOUNT_ID}:endpoint/{TEST_ENDPOINT_NAME}"
    response = sagemaker_client.add_tags(
        ResourceArn=resource_arn, Tags=GENERIC_TAGS_PARAM
    )
    assert response["ResponseMetadata"]["HTTPStatusCode"] == 200

    response = sagemaker_client.list_tags(ResourceArn=resource_arn)
    assert response["Tags"] == GENERIC_TAGS_PARAM


@mock_sagemaker
def test_delete_tags_endpoint(sagemaker_client):
    _set_up_sagemaker_resources(
        sagemaker_client, TEST_ENDPOINT_NAME, TEST_ENDPOINT_CONFIG_NAME, TEST_MODEL_NAME
    )

    resource_arn = f"arn:aws:sagemaker:{TEST_REGION_NAME}:{ACCOUNT_ID}:endpoint/{TEST_ENDPOINT_NAME}"
    response = sagemaker_client.add_tags(
        ResourceArn=resource_arn, Tags=GENERIC_TAGS_PARAM
    )
    assert response["ResponseMetadata"]["HTTPStatusCode"] == 200

    tag_keys = [tag["Key"] for tag in GENERIC_TAGS_PARAM]
    response = sagemaker_client.delete_tags(ResourceArn=resource_arn, TagKeys=tag_keys)
    assert response["ResponseMetadata"]["HTTPStatusCode"] == 200

    response = sagemaker_client.list_tags(ResourceArn=resource_arn)
    assert response["Tags"] == []


@mock_sagemaker
def test_list_tags_endpoint(sagemaker_client):
    _set_up_sagemaker_resources(
        sagemaker_client, TEST_ENDPOINT_NAME, TEST_ENDPOINT_CONFIG_NAME, TEST_MODEL_NAME
    )

    tags = []
    for _ in range(80):
        tags.append({"Key": str(uuid.uuid4()), "Value": "myValue"})

    resource_arn = f"arn:aws:sagemaker:{TEST_REGION_NAME}:{ACCOUNT_ID}:endpoint/{TEST_ENDPOINT_NAME}"
    response = sagemaker_client.add_tags(ResourceArn=resource_arn, Tags=tags)
    assert response["ResponseMetadata"]["HTTPStatusCode"] == 200

    response = sagemaker_client.list_tags(ResourceArn=resource_arn)
    assert len(response["Tags"]) == 50
    assert response["Tags"] == tags[:50]

    response = sagemaker_client.list_tags(
        ResourceArn=resource_arn, NextToken=response["NextToken"]
    )
    assert len(response["Tags"]) == 30
    assert response["Tags"] == tags[50:]


def _set_up_sagemaker_resources(
    boto_client, endpoint_name, endpoint_config_name, model_name
):
    _create_model(boto_client, model_name)
    _create_endpoint_config(boto_client, endpoint_config_name, model_name)
    _create_endpoint(boto_client, endpoint_name, endpoint_config_name)


def _create_model(boto_client, model_name):
    resp = boto_client.create_model(
        ModelName=model_name,
        PrimaryContainer={
            "Image": "382416733822.dkr.ecr.us-east-1.amazonaws.com/factorization-machines:1",
            "ModelDataUrl": "s3://MyBucket/model.tar.gz",
        },
        ExecutionRoleArn=TEST_ROLE_ARN,
    )
    assert resp["ResponseMetadata"]["HTTPStatusCode"] == 200


def _create_endpoint_config(boto_client, endpoint_config_name, model_name):
    production_variants = [
        {
            "VariantName": "MyProductionVariant",
            "ModelName": model_name,
            "InitialInstanceCount": 1,
            "InstanceType": "ml.t2.medium",
        },
    ]
    resp = boto_client.create_endpoint_config(
        EndpointConfigName=endpoint_config_name, ProductionVariants=production_variants
    )
    resp["EndpointConfigArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint-config/{}$".format(endpoint_config_name)
    )


def _create_endpoint(boto_client, endpoint_name, endpoint_config_name):
    resp = boto_client.create_endpoint(
        EndpointName=endpoint_name, EndpointConfigName=endpoint_config_name
    )
    resp["EndpointArn"].should.match(
        r"^arn:aws:sagemaker:.*:.*:endpoint/{}$".format(endpoint_name)
    )