# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# SPDX-License-Identifier: MIT-0
#
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# software and associated documentation files (the "Software"), to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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from abc import ABCMeta
from aws_cdk import Stage
from dataclasses import dataclass
import constructs
from pathlib import Path
from yamldataclassconfig import create_file_path_field
from yamldataclassconfig.config import YamlDataClassConfig

DEFAULT_STAGE_NAME = "dev"


def get_config_for_stage(scope: constructs, path: str):

    default_path = Path(__file__).parent.joinpath(DEFAULT_STAGE_NAME, path)

    stage_name = Stage.of(scope).stage_name

    if stage_name:
        config_path = Path(__file__).parent.joinpath(stage_name.lower(), path)

        if not config_path.exists():
            print(f"Config file {path} for stage {stage_name} not found. Using {default_path} instead")
            config_path = default_path

        return config_path
    else:
        print(f"Stack created without a stage, config {path} not found. Using {default_path} instead")
        return default_path


@dataclass
class StageYamlDataClassConfig(YamlDataClassConfig, metaclass=ABCMeta):
    """This class implements YAML file load function with relative config paths and stage specific config loading capabilities."""

    def load(self):
        """
        This method automatically uses the config from alpha
        """
        path = Path(__file__).parent().joinpath("config/", "dev", self.FILE_PATH)
        return super().load(path=path)

    def load_for_stage(self, scope):
        """
        Looks up the stage from the current scope and loads the relevant config file
        """
        path = get_config_for_stage(scope, self.FILE_PATH)

        return super().load(path=path)

    def load_for_stage_file(self, scope, file_name):
        """
        Looks up the stage from the current scope and loads the relevant config file
        """

        path = get_config_for_stage(scope, file_name)

        return super().load(path=path)