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#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

import glob
import os.path
from dataclasses import dataclass
from typing import List

import yaml

from clflags.config import DEFAULT_FLAGS_STORAGE_PATH, DEFAULT_META_STORAGE_PATH, DEFAULT_FLAG_GLOB


@dataclass
class FlagInfo:
    name: str
    description: str
    path: str

    @property
    def enabled(self):
        return os.path.isfile(self.path)

    def __hash__(self):
        return hash(self.name)


def list_flags_info() -> List[FlagInfo]:
    """
    Gathers information about flags from DEFAULT_META_STORAGE_PATH
    and returns them in python-frienly sturcture.
    """
    meta_files = []

    storage_glob = os.path.join(DEFAULT_META_STORAGE_PATH, DEFAULT_FLAG_GLOB)
    for meta_file in glob.glob(storage_glob):
        with open(meta_file) as f:
            metadata = yaml.load(f.read(), Loader=yaml.SafeLoader)

        flag_name = os.path.basename(meta_file)
        default_flag_path = os.path.join(DEFAULT_FLAGS_STORAGE_PATH, flag_name)

        meta_files.append(FlagInfo(
            name=flag_name.rsplit('.')[-2],
            description=metadata['description'],
            path=metadata.get('path', default_flag_path)
        ))

    return meta_files