#  Copyright 2022 Collate
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#  http://www.apache.org/licenses/LICENSE-2.0
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

"""
Test database connectors with CLI
"""
import os
import re
import subprocess
from abc import ABC, abstractmethod
from enum import Enum
from pathlib import Path

import yaml

from metadata.config.common import load_config_file
from metadata.ingestion.api.sink import SinkStatus
from metadata.ingestion.api.source import SourceStatus
from metadata.ingestion.api.workflow import Workflow
from metadata.ingestion.ometa.ometa_api import OpenMetadata
from metadata.utils.constants import UTF_8

PATH_TO_RESOURCES = os.path.dirname(Path(os.path.realpath(__file__)).parent)

REGEX_AUX = {"log": r"\s+\[[^]]+]\s+[A-Z]+\s+[^}]+}\s+-\s+"}


class E2EType(Enum):
    """
    E2E Type Enum Class
    """

    INGEST = "ingest"
    PROFILER = "profiler"
    INGEST_DB_FILTER_SCHEMA = "ingest-db-filter-schema"
    INGEST_DB_FILTER_TABLE = "ingest-db-filter-table"
    INGEST_DB_FILTER_MIX = "ingest-db-filter-mix"
    INGEST_DASHBOARD_FILTER_MIX = "ingest-dashboard-filter-mix"
    INGEST_DASHBOARD_NOT_INCLUDING = "ingest-dashboard-not-including"


class CliBase(ABC):
    """
    CLI Base class
    """

    openmetadata: OpenMetadata
    test_file_path: str
    config_file_path: str

    def run_command(self, command: str = "ingest", test_file_path=None) -> str:
        file_path = (
            test_file_path if test_file_path is not None else self.test_file_path
        )
        args = [
            "metadata",
            command,
            "-c",
            file_path,
        ]
        process_status = subprocess.Popen(args, stderr=subprocess.PIPE)
        _, stderr = process_status.communicate()
        return stderr.decode("utf-8")

    def retrieve_lineage(self, entity_fqn: str) -> dict:
        return self.openmetadata.client.get(
            f"/lineage/table/name/{entity_fqn}?upstreamDepth=3&downstreamDepth=3"
        )

    def build_config_file(
        self, test_type: E2EType = E2EType.INGEST, extra_args: dict = None
    ) -> None:
        with open(self.config_file_path, encoding=UTF_8) as config_file:
            config_yaml = yaml.safe_load(config_file)
            config_yaml = self.build_yaml(config_yaml, test_type, extra_args)
            with open(self.test_file_path, "w", encoding=UTF_8) as test_file:
                yaml.dump(config_yaml, test_file)

    def retrieve_statuses(self, result):
        source_status: SourceStatus = self.extract_source_status(result)
        sink_status: SinkStatus = self.extract_sink_status(result)
        return sink_status, source_status

    @staticmethod
    def get_workflow(connector: str, test_type: str) -> Workflow:
        config_file = Path(
            PATH_TO_RESOURCES + f"/{test_type}/{connector}/{connector}.yaml"
        )
        config_dict = load_config_file(config_file)
        return Workflow.create(config_dict)

    @staticmethod
    def extract_source_status(output) -> SourceStatus:
        output_clean = output.replace("\n", " ")
        output_clean = re.sub(" +", " ", output_clean)
        output_clean_ansi = re.compile(r"\x1b[^m]*m")
        output_clean = output_clean_ansi.sub(" ", output_clean)
        regex = r"Source Status:%(log)s(.*?)%(log)sSink Status: .*" % REGEX_AUX
        output_clean = re.findall(regex, output_clean.strip())
        return SourceStatus.parse_obj(
            eval(output_clean[0].strip())  # pylint: disable=eval-used
        )

    @staticmethod
    def extract_sink_status(output) -> SinkStatus:
        output_clean = output.replace("\n", " ")
        output_clean = re.sub(" +", " ", output_clean)
        output_clean_ansi = re.compile(r"\x1b[^m]*m")
        output_clean = output_clean_ansi.sub("", output_clean)
        if re.match(".* Processor Status: .*", output_clean):
            regex = r"Sink Status:%(log)s(.*?)%(log)sProcessor Status: .*" % REGEX_AUX
            output_clean = re.findall(regex, output_clean.strip())[0].strip()
        else:
            regex = r".*Sink Status:%(log)s(.*?)%(log)sWorkflow Summary.*" % REGEX_AUX
            output_clean = re.findall(regex, output_clean.strip())[0].strip()
        return SinkStatus.parse_obj(eval(output_clean))  # pylint: disable=eval-used

    @staticmethod
    def build_yaml(config_yaml: dict, test_type: E2EType, extra_args: dict):
        """
        Build yaml as per E2EType
        """
        if test_type == E2EType.PROFILER:
            del config_yaml["source"]["sourceConfig"]["config"]
            config_yaml["source"]["sourceConfig"] = {
                "config": {
                    "type": "Profiler",
                    "generateSampleData": True,
                    "profileSample": extra_args.get("profileSample", 1)
                    if extra_args
                    else 1,
                }
            }
            config_yaml["processor"] = {"type": "orm-profiler", "config": {}}
        if test_type == E2EType.INGEST_DB_FILTER_SCHEMA:
            config_yaml["source"]["sourceConfig"]["config"][
                "schemaFilterPattern"
            ] = extra_args
        if test_type == E2EType.INGEST_DB_FILTER_TABLE:
            config_yaml["source"]["sourceConfig"]["config"][
                "tableFilterPattern"
            ] = extra_args
        if test_type == E2EType.INGEST_DB_FILTER_MIX:
            config_yaml["source"]["sourceConfig"]["config"][
                "schemaFilterPattern"
            ] = extra_args["schema"]
            config_yaml["source"]["sourceConfig"]["config"][
                "tableFilterPattern"
            ] = extra_args["table"]
        if test_type == E2EType.INGEST_DASHBOARD_FILTER_MIX:
            config_yaml["source"]["sourceConfig"]["config"][
                "dashboardFilterPattern"
            ] = extra_args["dashboards"]
            config_yaml["source"]["sourceConfig"]["config"][
                "chartFilterPattern"
            ] = extra_args["charts"]
            config_yaml["source"]["sourceConfig"]["config"][
                "dataModelFilterPattern"
            ] = extra_args["dataModels"]
        if test_type == E2EType.INGEST_DASHBOARD_NOT_INCLUDING:
            config_yaml["source"]["sourceConfig"]["config"]["includeTags"] = extra_args[
                "includeTags"
            ]
            config_yaml["source"]["sourceConfig"]["config"][
                "includeDataModels"
            ] = extra_args["includeDataModels"]

        return config_yaml

    @staticmethod
    @abstractmethod
    def get_test_type():
        pass