from __future__ import unicode_literals

import time
import datetime
import boto3
from botocore.exceptions import ClientError
import sure  # noqa
from moto import mock_batch, mock_iam, mock_ec2, mock_ecs, mock_logs, mock_cloudformation
import functools
import nose
import json

DEFAULT_REGION = 'eu-central-1'


def _get_clients():
    return boto3.client('ec2', region_name=DEFAULT_REGION), \
           boto3.client('iam', region_name=DEFAULT_REGION), \
           boto3.client('ecs', region_name=DEFAULT_REGION), \
           boto3.client('logs', region_name=DEFAULT_REGION), \
           boto3.client('batch', region_name=DEFAULT_REGION)


def _setup(ec2_client, iam_client):
    """
    Do prerequisite setup
    :return: VPC ID, Subnet ID, Security group ID, IAM Role ARN
    :rtype: tuple
    """
    resp = ec2_client.create_vpc(CidrBlock='172.30.0.0/24')
    vpc_id = resp['Vpc']['VpcId']
    resp = ec2_client.create_subnet(
        AvailabilityZone='eu-central-1a',
        CidrBlock='172.30.0.0/25',
        VpcId=vpc_id
    )
    subnet_id = resp['Subnet']['SubnetId']
    resp = ec2_client.create_security_group(
        Description='test_sg_desc',
        GroupName='test_sg',
        VpcId=vpc_id
    )
    sg_id = resp['GroupId']

    resp = iam_client.create_role(
        RoleName='TestRole',
        AssumeRolePolicyDocument='some_policy'
    )
    iam_arn = resp['Role']['Arn']

    return vpc_id, subnet_id, sg_id, iam_arn


@mock_cloudformation()
@mock_ec2
@mock_ecs
@mock_iam
@mock_batch
def test_create_env_cf():
    ec2_client, iam_client, ecs_client, logs_client, batch_client = _get_clients()
    vpc_id, subnet_id, sg_id, iam_arn = _setup(ec2_client, iam_client)

    create_environment_template = {
        'Resources': {
            "ComputeEnvironment": {
                "Type": "AWS::Batch::ComputeEnvironment",
                "Properties": {
                    "Type": "MANAGED",
                    "ComputeResources": {
                        "Type": "EC2",
                        "MinvCpus": 0,
                        "DesiredvCpus": 0,
                        "MaxvCpus": 64,
                        "InstanceTypes": [
                            "optimal"
                        ],
                        "Subnets": [subnet_id],
                        "SecurityGroupIds": [sg_id],
                        "InstanceRole": iam_arn
                    },
                    "ServiceRole": iam_arn
                }
            }
        }
    }
    cf_json = json.dumps(create_environment_template)

    cf_conn = boto3.client('cloudformation', DEFAULT_REGION)
    stack_id = cf_conn.create_stack(
        StackName='test_stack',
        TemplateBody=cf_json,
    )['StackId']

    stack_resources = cf_conn.list_stack_resources(StackName=stack_id)

    stack_resources['StackResourceSummaries'][0]['ResourceStatus'].should.equal('CREATE_COMPLETE')
    # Spot checks on the ARN
    stack_resources['StackResourceSummaries'][0]['PhysicalResourceId'].startswith('arn:aws:batch:')
    stack_resources['StackResourceSummaries'][0]['PhysicalResourceId'].should.contain('test_stack')


@mock_cloudformation()
@mock_ec2
@mock_ecs
@mock_iam
@mock_batch
def test_create_job_queue_cf():
    ec2_client, iam_client, ecs_client, logs_client, batch_client = _get_clients()
    vpc_id, subnet_id, sg_id, iam_arn = _setup(ec2_client, iam_client)

    create_environment_template = {
        'Resources': {
            "ComputeEnvironment": {
                "Type": "AWS::Batch::ComputeEnvironment",
                "Properties": {
                    "Type": "MANAGED",
                    "ComputeResources": {
                        "Type": "EC2",
                        "MinvCpus": 0,
                        "DesiredvCpus": 0,
                        "MaxvCpus": 64,
                        "InstanceTypes": [
                            "optimal"
                        ],
                        "Subnets": [subnet_id],
                        "SecurityGroupIds": [sg_id],
                        "InstanceRole": iam_arn
                    },
                    "ServiceRole": iam_arn
                }
            },

            "JobQueue": {
                "Type": "AWS::Batch::JobQueue",
                "Properties": {
                    "Priority": 1,
                    "ComputeEnvironmentOrder": [
                        {
                            "Order": 1,
                            "ComputeEnvironment": {"Ref": "ComputeEnvironment"}
                        }
                    ]
                }
            },
        }
    }
    cf_json = json.dumps(create_environment_template)

    cf_conn = boto3.client('cloudformation', DEFAULT_REGION)
    stack_id = cf_conn.create_stack(
        StackName='test_stack',
        TemplateBody=cf_json,
    )['StackId']

    stack_resources = cf_conn.list_stack_resources(StackName=stack_id)
    len(stack_resources['StackResourceSummaries']).should.equal(2)

    job_queue_resource = list(filter(lambda item: item['ResourceType'] == 'AWS::Batch::JobQueue', stack_resources['StackResourceSummaries']))[0]

    job_queue_resource['ResourceStatus'].should.equal('CREATE_COMPLETE')
    # Spot checks on the ARN
    job_queue_resource['PhysicalResourceId'].startswith('arn:aws:batch:')
    job_queue_resource['PhysicalResourceId'].should.contain('test_stack')
    job_queue_resource['PhysicalResourceId'].should.contain('job-queue/')