import boto3
from botocore.exceptions import ClientError


################################################################################################
#
# Configuration Parameters
#
################################################################################################


region = 'eu-central-1'
availabilityZone = 'eu-central-1b'
imageId = 'ami-0cc293023f983ed53'
instanceType = 't3.nano'
keyName = 'srieger-pub'


################################################################################################
#
# boto3 code
#
################################################################################################


client = boto3.setup_default_session(region_name=region)
ec2Client = boto3.client("ec2")
ec2Resource = boto3.resource('ec2')

rdsClient = boto3.client("rds")

response = ec2Client.describe_vpcs()
vpc_id = response.get('Vpcs', [{}])[0].get('VpcId', '')
subnet_id = ec2Client.describe_subnets(
    Filters=[
        {
            'Name': 'availability-zone', 'Values': [availabilityZone]
        }
    ])['Subnets'][0]['SubnetId']

print("Deleting old instance...")
print("------------------------------------")

response = ec2Client.describe_instances(Filters=[{'Name': 'tag-key', 'Values': ['tug-of-war-rds']}])
print(response)
reservations = response['Reservations']
for reservation in reservations:
    for instance in reservation['Instances']:
        if instance['State']['Name'] == "running" or instance['State']['Name'] == "pending":
            response = ec2Client.terminate_instances(InstanceIds=[instance['InstanceId']])
            print(response)
            instanceToTerminate = ec2Resource.Instance(instance['InstanceId'])
            instanceToTerminate.wait_until_terminated()

print("Deleting old DB instance...")
print("------------------------------------")

try:
    response = rdsClient.delete_db_instance(
        DBInstanceIdentifier='tug-of-war-rds-db1',
        SkipFinalSnapshot=True,
        DeleteAutomatedBackups=True
    )
except ClientError as e:
    print(e)

waiter = rdsClient.get_waiter('db_instance_deleted')
waiter.wait(DBInstanceIdentifier='tug-of-war-rds-db1')

#time.sleep(5)

print("Delete old security group...")
print("------------------------------------")

try:
    response = ec2Client.delete_security_group(GroupName='tug-of-war-rds')
except ClientError as e:
    print(e)