import boto3
from botocore.exceptions import ClientError

def delete_vpc(vpc_id, region):
    ec2 = boto3.client('ec2', region_name=region)

    try:
        # Describe and detach Internet Gateways
        igw_response = ec2.describe_internet_gateways(
            Filters=[{'Name': 'attachment.vpc-id', 'Values': [vpc_id]}]
        )
        for igw in igw_response.get('InternetGateways', []):
            igw_id = igw['InternetGatewayId']
            print(f"Detaching and deleting Internet Gateway {igw_id} in {region}")
            ec2.detach_internet_gateway(InternetGatewayId=igw_id, VpcId=vpc_id)
            ec2.delete_internet_gateway(InternetGatewayId=igw_id)

        # Describe and delete Subnets
        subnet_response = ec2.describe_subnets(
            Filters=[{'Name': 'vpc-id', 'Values': [vpc_id]}]
        )
        for subnet in subnet_response.get('Subnets', []):
            subnet_id = subnet['SubnetId']
            print(f"Deleting Subnet {subnet_id} in {region}")
            ec2.delete_subnet(SubnetId=subnet_id)

        # Delete the VPC
        print(f"Deleting VPC {vpc_id} in {region}")
        ec2.delete_vpc(VpcId=vpc_id)
        print(f"Successfully deleted VPC {vpc_id} in {region}")
    except ClientError as e:
        print(f"Error deleting VPC {vpc_id} in {region}: {e}")

def delete_default_vpcs():
    ec2 = boto3.client('ec2')
    regions = [region['RegionName'] for region in ec2.describe_regions()['Regions']]

    for region in regions:
        print(f"Checking default VPCs in region: {region}")
        ec2_region = boto3.client('ec2', region_name=region)
        try:
            vpcs_response = ec2_region.describe_vpcs(
                Filters=[{'Name': 'isDefault', 'Values': ['true']}]
            )
            for vpc in vpcs_response.get('Vpcs', []):
                vpc_id = vpc['VpcId']
                print(f"Found default VPC {vpc_id} in {region}")
                delete_vpc(vpc_id, region)
        except ClientError as e:
            print(f"Error retrieving VPCs in region {region}: {e}")

if __name__ == "__main__":
    delete_default_vpcs()