import os

import allure
import pytest
from frostfs_testlib import reporter
from frostfs_testlib.s3 import S3ClientWrapper, VersioningStatus
from frostfs_testlib.steps.s3 import s3_helper
from frostfs_testlib.storage.dataclasses.object_size import ObjectSize
from frostfs_testlib.utils.file_utils import generate_file, generate_file_with_content, get_file_content


@pytest.mark.nightly
@pytest.mark.s3_gate
@pytest.mark.s3_gate_versioning
class TestS3GateVersioning:
    @allure.title("Impossible to disable versioning with object_lock (s3_client={s3_client})")
    def test_s3_version_off(self, s3_client: S3ClientWrapper):
        bucket = s3_client.create_bucket(object_lock_enabled_for_bucket=True)
        with pytest.raises(Exception):
            s3_helper.set_bucket_versioning(s3_client, bucket, VersioningStatus.SUSPENDED)

    @allure.title("Object versioning (s3_client={s3_client})")
    def test_s3_api_versioning(self, s3_client: S3ClientWrapper, bucket: str, simple_object_size: ObjectSize):
        """
        Test checks basic versioning functionality for S3 bucket.
        """
        version_1_content = "Version 1"
        version_2_content = "Version 2"
        file_name_simple = generate_file_with_content(simple_object_size.value, content=version_1_content)
        obj_key = os.path.basename(file_name_simple)
        s3_helper.set_bucket_versioning(s3_client, bucket, VersioningStatus.ENABLED)

        with reporter.step("Put several versions of object into bucket"):
            version_id_1 = s3_client.put_object(bucket, file_name_simple)
            generate_file_with_content(simple_object_size.value, file_path=file_name_simple, content=version_2_content)
            version_id_2 = s3_client.put_object(bucket, file_name_simple)

        with reporter.step("Check bucket shows all versions"):
            versions = s3_client.list_objects_versions(bucket)
            obj_versions = {version.get("VersionId") for version in versions if version.get("Key") == obj_key}
            assert obj_versions == {
                version_id_1,
                version_id_2,
            }, f"Expected object has versions: {version_id_1, version_id_2}"

        with reporter.step("Show information about particular version"):
            for version_id in (version_id_1, version_id_2):
                response = s3_client.head_object(bucket, obj_key, version_id=version_id)
                assert "LastModified" in response, "Expected LastModified field"
                assert "ETag" in response, "Expected ETag field"
                assert response.get("VersionId") == version_id, f"Expected VersionId is {version_id}"
                assert response.get("ContentLength") != 0, "Expected ContentLength is not zero"

        with reporter.step("Check object's attributes"):
            for version_id in (version_id_1, version_id_2):
                got_attrs = s3_client.get_object_attributes(bucket, obj_key, ["ETag"], version_id=version_id)
                if got_attrs:
                    assert got_attrs.get("VersionId") == version_id, f"Expected VersionId is {version_id}"

        with reporter.step("Delete object and check it was deleted"):
            response = s3_client.delete_object(bucket, obj_key)
            version_id_delete = response.get("VersionId")

            with pytest.raises(Exception, match=r".*Not Found.*"):
                s3_client.head_object(bucket, obj_key)

        with reporter.step("Get content for all versions and check it is correct"):
            for version, content in (
                (version_id_2, version_2_content),
                (version_id_1, version_1_content),
            ):
                file_name = s3_client.get_object(bucket, obj_key, version_id=version)
                got_content = get_file_content(file_name)
                assert got_content == content, f"Expected object content is\n{content}\nGot\n{got_content}"

        with reporter.step("Restore previous object version"):
            s3_client.delete_object(bucket, obj_key, version_id=version_id_delete)

            file_name = s3_client.get_object(bucket, obj_key)
            got_content = get_file_content(file_name)
            assert got_content == version_2_content, f"Expected object content is\n{version_2_content}\nGot\n{got_content}"

    @allure.title("Enable and disable versioning without object_lock (s3_client={s3_client})")
    def test_s3_version(self, s3_client: S3ClientWrapper, simple_object_size: ObjectSize):
        file_path = generate_file(simple_object_size.value)
        file_name = s3_helper.object_key_from_file_path(file_path)
        bucket_objects = [file_name]
        bucket = s3_client.create_bucket(object_lock_enabled_for_bucket=False)
        s3_helper.set_bucket_versioning(s3_client, bucket, VersioningStatus.SUSPENDED)

        with reporter.step("Put object into bucket"):
            s3_client.put_object(bucket, file_path)
            objects_list = s3_client.list_objects(bucket)
            assert objects_list == bucket_objects, f"Expected list with single objects in bucket, got {objects_list}"
            object_version = s3_client.list_objects_versions(bucket)
            actual_version = [version.get("VersionId") for version in object_version if version.get("Key") == file_name]
            assert actual_version == ["null"], f"Expected version is null in list-object-versions, got {object_version}"
            object_0 = s3_client.head_object(bucket, file_name)
            assert object_0.get("VersionId") == "null", f"Expected version is null in head-object, got {object_0.get('VersionId')}"

        s3_helper.set_bucket_versioning(s3_client, bucket, VersioningStatus.ENABLED)

        with reporter.step("Put several versions of object into bucket"):
            version_id_1 = s3_client.put_object(bucket, file_path)
            file_name_1 = generate_file_with_content(simple_object_size.value, file_path=file_path)
            version_id_2 = s3_client.put_object(bucket, file_name_1)

        with reporter.step("Check bucket shows all versions"):
            versions = s3_client.list_objects_versions(bucket)
            obj_versions = [version.get("VersionId") for version in versions if version.get("Key") == file_name]
            assert (
                obj_versions.sort() == [version_id_1, version_id_2, "null"].sort()
            ), f"Expected object has versions: {version_id_1, version_id_2, 'null'}"

        with reporter.step("Get object"):
            object_1 = s3_client.get_object(bucket, file_name, full_output=True)
            assert object_1.get("VersionId") == version_id_2, f"Get object with version {version_id_2}"

        with reporter.step("Get first version of object"):
            object_2 = s3_client.get_object(bucket, file_name, version_id_1, full_output=True)
            assert object_2.get("VersionId") == version_id_1, f"Get object with version {version_id_1}"

        with reporter.step("Get second version of object"):
            object_3 = s3_client.get_object(bucket, file_name, version_id_2, full_output=True)
            assert object_3.get("VersionId") == version_id_2, f"Get object with version {version_id_2}"