import os
import json

def check_and_create_folder_and_json(folder_path, json_file_name, default_json_content):
    # Check if the folder exists
    if not os.path.exists(folder_path):
        # Create the folder if it doesn't exist
        os.makedirs(folder_path)
        print(f"Folder '{folder_path}' created.")
    else:
        print(f"Folder '{folder_path}' already exists.")
    
    # Full path for the JSON file
    json_file_path = os.path.join(folder_path, json_file_name)

    # Check if the JSON file exists
    if not os.path.exists(json_file_path):
        # If it doesn't exist, then create the JSON file with "hello world"
        with open(json_file_path, 'w') as json_file:
            json.dump(default_json_content, json_file, indent=4)
        print(f"JSON file '{json_file_name}' created with content: {{'message': 'hello world'}}.")
    else:
        print(f"JSON file '{json_file_name}' already exists in '{folder_path}'.")

## Load JSON file and return it as a dictionary.
def load_json_as_dict(folder_path, json_file_name, default_json_content):
    full_path_with_filename = f"{folder_path}/{json_file_name}"
    if not os.path.exists(full_path_with_filename):
        print(f"JSON file '{full_path_with_filename}' does not exist yet.  So the program is now making it")
        check_and_create_folder_and_json(folder_path, json_file_name, default_json_content)

    # Regardless of it was just made or not, load it,
    with open(full_path_with_filename, 'r') as json_file:
        data = json.load(json_file)
    return data

## Search for a key in the dictionary and return its value or a message if not found.
def search_key_in_json(json_dict, key, default_value_if_not_found):
    return json_dict.get(key, default_value_if_not_found)

def get_the_path_of_the_folder_for(which_folder_type, subfolder_name):
    HOME = os.path.expanduser('~')  # Get the user's home directory
    config_path = os.path.join(HOME, which_folder_type)  # Create a path to the .config directory
    path_for_configs = f"{config_path}/sms-exchange/{subfolder_name}"
    return path_for_configs


def replace_and_save_value_in_json(folder_path, json_file_name, default_json_content, key_value_to_find, value_to_replace):
    # Check if the folder exists
    if not os.path.exists(folder_path):
        # Create the folder if it doesn't exist
        os.makedirs(folder_path)
    
    # Full path for the JSON file
    json_file_path = os.path.join(folder_path, json_file_name)

    # Check if the JSON file exists,
    if os.path.exists(json_file_path):
        # and if so then load it:
        with open(json_file_path, 'r') as json_file:
            data = json.load(json_file)
    else:
        # otherwise use the default values:
        data = json.load(json_file_path)

    # Replace the value of the key "key_value_to_find" with "value_to_replace"
    data[key_value_to_find] = value_to_replace

    # Now write the entire thing into the JSON file:
    with open(json_file_path, 'w') as json_file:
        json.dump(data, json_file, indent=4)

    return data