import json

import os

def aggregate_config(config_dir, fallback_values):

"""

Aggregates configuration values from files in a directory, using fallback values if a value is missing.

Args:

config_dir (str): The directory containing the configuration files.

fallback_values (dict): A dictionary containing default values to use if a configuration file doesn't contain a specific key.

Returns:

dict: A dictionary containing the aggregated configuration values.

"""

aggregated_config = fallback_values.copy() # Start with fallback values

for filename in os.listdir(config_dir):

if filename.endswith(".json"):

filepath = os.path.join(config_dir, filename)

try:

with open(filepath, "r") as f:

config = json.load(f)

for key, value in config.items():

if key not in aggregated_config:

aggregated_config[key] = value # Add new key/value pair

except (json.JSONDecodeError, FileNotFoundError) as e:

print(f"Error reading {filename}: {e}")

# Optionally log the error to a file

return aggregated_config