from prowler.lib.check.models import Check, Check_Report_AWS
from prowler.providers.aws.services.vpc.vpc_client import vpc_client


class vpc_subnet_different_az(Check):
    def execute(self):
        findings = []
        for vpc in vpc_client.vpcs.values():
            report = Check_Report_AWS(self.metadata())
            report.region = vpc.region
            report.resource_tags = vpc.tags
            report.status = "FAIL"
            report.status_extended = f"VPC {vpc.id} has no subnets."
            report.resource_id = vpc.id
            if vpc.subnets:
                availability_zone = None
                for subnet in vpc.subnets:
                    if (
                        availability_zone
                        and subnet.availability_zone != availability_zone
                    ):
                        report.status = "PASS"
                        report.status_extended = f"VPC {vpc.id} has subnets in more than one availability zone."
                        break
                    availability_zone = subnet.availability_zone
                    report.status_extended = (
                        f"VPC {vpc.id} has only subnets in {availability_zone}."
                    )

            findings.append(report)

        return findings
