from prowler.lib.check.models import Check, Check_Report_AWS
from prowler.providers.aws.services.cloudtrail.cloudtrail_client import (
    cloudtrail_client,
)
from prowler.providers.aws.services.s3.s3_client import s3_client


class cloudtrail_logs_s3_bucket_is_not_publicly_accessible(Check):
    def execute(self):
        findings = []
        for trail in cloudtrail_client.trails:
            if trail.name:
                trail_bucket_is_in_account = False
                trail_bucket = trail.s3_bucket
                report = Check_Report_AWS(self.metadata())
                report.region = trail.region
                report.resource_id = trail.name
                report.resource_arn = trail.arn
                report.resource_tags = trail.tags
                report.status = "PASS"
                if trail.is_multiregion:
                    report.status_extended = f"S3 Bucket {trail_bucket} from multiregion trail {trail.name} is not publicly accessible"
                else:
                    report.status_extended = f"S3 Bucket {trail_bucket} from single region trail {trail.name} is not publicly accessible"
                for bucket in s3_client.buckets:
                    # Here we need to ensure that acl_grantee is filled since if we don't have permissions to query the api for a concrete region
                    # (for example due to a SCP) we are going to try access an attribute from a None type
                    if trail_bucket == bucket.name:
                        trail_bucket_is_in_account = True
                        if bucket.acl_grantees:
                            for grant in bucket.acl_grantees:
                                if (
                                    grant.URI
                                    == "http://acs.amazonaws.com/groups/global/AllUsers"
                                ):
                                    report.status = "FAIL"
                                    if trail.is_multiregion:
                                        report.status_extended = f"S3 Bucket {trail_bucket} from multiregion trail {trail.name} is publicly accessible"
                                    else:
                                        report.status_extended = f"S3 Bucket {trail_bucket} from single region trail {trail.name} is publicly accessible"
                                    break
                # check if trail bucket is a cross account bucket
                if not trail_bucket_is_in_account:
                    report.status_extended = f"Trail {trail.name} bucket ({trail_bucket}) is a cross-account bucket in another account out of Prowler's permissions scope, please check it manually"
                findings.append(report)

        return findings
