from re import search
from unittest import mock

from boto3 import client, session
from moto import mock_cloudtrail, mock_s3

from prowler.providers.aws.lib.audit_info.models import AWS_Audit_Info
from prowler.providers.common.models import Audit_Metadata

AWS_ACCOUNT_NUMBER = "123456789012"


class Test_cloudtrail_logs_s3_bucket_is_not_publicly_accessible:
    def set_mocked_audit_info(self):
        audit_info = AWS_Audit_Info(
            session_config=None,
            original_session=None,
            audit_session=session.Session(
                profile_name=None,
                botocore_session=None,
            ),
            audited_account=AWS_ACCOUNT_NUMBER,
            audited_account_arn=f"arn:aws:iam::{AWS_ACCOUNT_NUMBER}:root",
            audited_user_id=None,
            audited_partition="aws",
            audited_identity_arn=None,
            profile=None,
            profile_region=None,
            credentials=None,
            assumed_role_info=None,
            audited_regions=["us-east-1", "eu-west-1"],
            organizations_metadata=None,
            audit_resources=None,
            mfa_enabled=False,
            audit_metadata=Audit_Metadata(
                services_scanned=0,
                expected_checks=[],
                completed_checks=0,
                audit_progress=0,
            ),
        )
        return audit_info

    @mock_cloudtrail
    @mock_s3
    def test_not_trails(self):
        from prowler.providers.aws.services.cloudtrail.cloudtrail_service import (
            Cloudtrail,
        )
        from prowler.providers.aws.services.s3.s3_service import S3

        with mock.patch(
            "prowler.providers.aws.lib.audit_info.audit_info.current_audit_info",
            new=self.set_mocked_audit_info(),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_client",
            new=Cloudtrail(self.set_mocked_audit_info()),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.s3_client",
            new=S3(self.set_mocked_audit_info()),
        ):
            # Test Check
            from prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible import (
                cloudtrail_logs_s3_bucket_is_not_publicly_accessible,
            )

            check = cloudtrail_logs_s3_bucket_is_not_publicly_accessible()
            result = check.execute()

            assert len(result) == 0

    @mock_cloudtrail
    @mock_s3
    def test_trail_bucket_no_acl(self):
        cloudtrail_client = client("cloudtrail", region_name="us-east-1")
        s3_client = client("s3", region_name="us-east-1")
        trail_name_us = "trail_test_us"
        bucket_name_us = "bucket_test_us"
        s3_client.create_bucket(Bucket=bucket_name_us)
        trail_us = cloudtrail_client.create_trail(
            Name=trail_name_us, S3BucketName=bucket_name_us, IsMultiRegionTrail=False
        )

        from prowler.providers.aws.services.cloudtrail.cloudtrail_service import (
            Cloudtrail,
        )
        from prowler.providers.aws.services.s3.s3_service import S3

        with mock.patch(
            "prowler.providers.aws.lib.audit_info.audit_info.current_audit_info",
            new=self.set_mocked_audit_info(),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_client",
            new=Cloudtrail(self.set_mocked_audit_info()),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.s3_client",
            new=S3(self.set_mocked_audit_info()),
        ):
            # Test Check
            from prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible import (
                cloudtrail_logs_s3_bucket_is_not_publicly_accessible,
            )

            check = cloudtrail_logs_s3_bucket_is_not_publicly_accessible()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "PASS"
            assert result[0].resource_id == trail_name_us

            assert result[0].resource_arn == trail_us["TrailARN"]
            assert search(
                result[0].status_extended,
                f"S3 Bucket {bucket_name_us} from single region trail {trail_name_us} is not publicly accessible.",
            )
            assert result[0].resource_tags == []
            assert result[0].region == "us-east-1"

    @mock_cloudtrail
    @mock_s3
    def test_trail_bucket_public_acl(self):
        s3_client = client("s3", region_name="us-east-1")
        bucket_name_us = "bucket_test_us"
        s3_client.create_bucket(Bucket=bucket_name_us)
        s3_client.put_bucket_acl(
            AccessControlPolicy={
                "Grants": [
                    {
                        "Grantee": {
                            "DisplayName": "test",
                            "EmailAddress": "",
                            "ID": "test_ID",
                            "Type": "Group",
                            "URI": "http://acs.amazonaws.com/groups/global/AllUsers",
                        },
                        "Permission": "READ",
                    },
                ],
                "Owner": {"DisplayName": "test", "ID": "test_id"},
            },
            Bucket=bucket_name_us,
        )

        trail_name_us = "trail_test_us"
        cloudtrail_client = client("cloudtrail", region_name="us-east-1")
        trail_us = cloudtrail_client.create_trail(
            Name=trail_name_us, S3BucketName=bucket_name_us, IsMultiRegionTrail=False
        )

        from prowler.providers.aws.services.cloudtrail.cloudtrail_service import (
            Cloudtrail,
        )
        from prowler.providers.aws.services.s3.s3_service import S3

        with mock.patch(
            "prowler.providers.aws.lib.audit_info.audit_info.current_audit_info",
            new=self.set_mocked_audit_info(),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_client",
            new=Cloudtrail(self.set_mocked_audit_info()),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.s3_client",
            new=S3(self.set_mocked_audit_info()),
        ):
            # Test Check
            from prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible import (
                cloudtrail_logs_s3_bucket_is_not_publicly_accessible,
            )

            check = cloudtrail_logs_s3_bucket_is_not_publicly_accessible()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "FAIL"
            assert result[0].resource_id == trail_name_us
            assert result[0].resource_arn == trail_us["TrailARN"]
            assert search(
                result[0].status_extended,
                f"S3 Bucket {bucket_name_us} from single region trail {trail_name_us} is publicly accessible.",
            )
            assert result[0].resource_tags == []
            assert result[0].region == "us-east-1"

    @mock_cloudtrail
    @mock_s3
    def test_trail_bucket_not_public_acl(self):
        cloudtrail_client = client("cloudtrail", region_name="us-east-1")
        s3_client = client("s3", region_name="us-east-1")
        trail_name_us = "trail_test_us"
        bucket_name_us = "bucket_test_us"
        s3_client.create_bucket(Bucket=bucket_name_us)
        trail_us = cloudtrail_client.create_trail(
            Name=trail_name_us, S3BucketName=bucket_name_us, IsMultiRegionTrail=False
        )

        s3_client.put_bucket_acl(
            AccessControlPolicy={
                "Grants": [
                    {
                        "Grantee": {
                            "DisplayName": "test",
                            "EmailAddress": "",
                            "ID": "test_ID",
                            "Type": "CanonicalUser",
                            "URI": "http://acs.amazonaws.com/groups/global/AuthenticatedUsers",
                        },
                        "Permission": "READ",
                    },
                ],
                "Owner": {"DisplayName": "test", "ID": "test_id"},
            },
            Bucket=bucket_name_us,
        )
        from prowler.providers.aws.services.cloudtrail.cloudtrail_service import (
            Cloudtrail,
        )
        from prowler.providers.aws.services.s3.s3_service import S3

        with mock.patch(
            "prowler.providers.aws.lib.audit_info.audit_info.current_audit_info",
            new=self.set_mocked_audit_info(),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_client",
            new=Cloudtrail(self.set_mocked_audit_info()),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.s3_client",
            new=S3(self.set_mocked_audit_info()),
        ):
            # Test Check
            from prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible import (
                cloudtrail_logs_s3_bucket_is_not_publicly_accessible,
            )

            check = cloudtrail_logs_s3_bucket_is_not_publicly_accessible()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "PASS"
            assert result[0].resource_id == trail_name_us
            assert result[0].resource_arn == trail_us["TrailARN"]
            assert search(
                result[0].status_extended,
                f"S3 Bucket {bucket_name_us} from single region trail {trail_name_us} is not publicly accessible.",
            )
            assert result[0].resource_tags == []
            assert result[0].region == "us-east-1"

    @mock_cloudtrail
    @mock_s3
    def test_trail_bucket_cross_account(self):
        cloudtrail_client = client("cloudtrail", region_name="us-east-1")
        s3_client = client("s3", region_name="us-east-1")
        trail_name_us = "trail_test_us"
        bucket_name_us = "bucket_test_us"
        s3_client.create_bucket(Bucket=bucket_name_us)
        trail_us = cloudtrail_client.create_trail(
            Name=trail_name_us, S3BucketName=bucket_name_us, IsMultiRegionTrail=False
        )

        from prowler.providers.aws.services.cloudtrail.cloudtrail_service import (
            Cloudtrail,
        )
        from prowler.providers.aws.services.s3.s3_service import S3

        with mock.patch(
            "prowler.providers.aws.lib.audit_info.audit_info.current_audit_info",
            new=self.set_mocked_audit_info(),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_client",
            new=Cloudtrail(self.set_mocked_audit_info()),
        ), mock.patch(
            "prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.s3_client",
            new=S3(self.set_mocked_audit_info()),
        ) as s3_client:
            # Test Check
            from prowler.providers.aws.services.cloudtrail.cloudtrail_logs_s3_bucket_is_not_publicly_accessible.cloudtrail_logs_s3_bucket_is_not_publicly_accessible import (
                cloudtrail_logs_s3_bucket_is_not_publicly_accessible,
            )

            # Empty s3 buckets to simulate the bucket is in another account
            s3_client.buckets = []

            check = cloudtrail_logs_s3_bucket_is_not_publicly_accessible()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "INFO"
            assert result[0].resource_id == trail_name_us
            assert result[0].resource_arn == trail_us["TrailARN"]
            assert search(
                "is a cross-account bucket in another account out of Prowler's permissions scope.",
                result[0].status_extended,
            )
            assert result[0].resource_tags == []
            assert result[0].region == "us-east-1"
