import json
import os
from pathlib import Path
from typing import Dict, Any
from collections import OrderedDict

from .paths import LIBS_DIR

class Config:
    def __init__(self):
        self.libs: Dict[str, Dict[str, Any]] = {}
        self.load_libs_config()

    def load_libs_config(self):
        for lib_path in LIBS_DIR.iterdir():
            if lib_path.is_dir():
                info_path = lib_path / "info.json"
                config_path = lib_path / "config.json"
                lib_id = lib_path.name

                info_data = {}
                config_data = {}

                if info_path.exists():
                    with open(info_path) as f:
                        info_data = json.load(f, object_pairs_hook=OrderedDict)

                if config_path.exists():
                    with open(config_path) as f:
                        config_data = json.load(f, object_pairs_hook=OrderedDict)

                config_data["info"] = info_data
                self.libs[lib_id] = config_data

    def get(self, lib: str, *keys, default=None):
        """
        Retrieves values from the config.

        Example:
            config.get("app", "libs", "app", "update", "version", default="1.0")

        Parameters:
        - lib: the name of the library
        - *keys: a sequence of keys to navigate through nested dictionaries
        - default: the value to return if any key in the chain does not exist

        Returns:
        - The value found at the nested key path, or `default` if a key is missing.
        """
        value = self.libs.get(lib, default)
        for key in keys:
            if isinstance(value, dict) and key in value:
                value = value[key]
            else:
                return default
        return value