import asyncio
import requests
import json
from typing import List
import os


def write_config_file(
    server_name: str, path_to_template_file: str, path_for_config: str
) -> None:
    template: str = ""
    with open(path_to_template_file, "r") as file:
        template = file.read()

    config_body: str = template.replace("server_name _;", f"server_name {server_name};")
    condifg_full_path: str = os.path.abspath(path_for_config)
    config_filename: str = f"{server_name}.conf"

    if not os.path.isdir(condifg_full_path):
        os.mkdir(condifg_full_path)

    with open(os.path.join(condifg_full_path, config_filename), "w") as file:
        file.write(config_body)


def send_request(server: str, columns: list, limit: int) -> dict:
    response = requests.get(server, json={"columns": columns, "limit": limit})
    return response.json()


def get_hosts(server_response: dict) -> List[str]:
    hosts: list = []

    for host in server_response.get("result"):
        hosts.append(host.get("hostname"))

    return hosts


def main():
    TEMPLATE = "template_conf.conf"
    PATH_FOR_CONFIG = "ng"
    FREQUENCY_SEC = 10

    resp = send_request(
        "http://127.0.0.1:5000/api/portal/get", columns=["hostname"], limit=9
    )

    hosts = get_hosts(resp)

    for host in hosts:
        write_config_file(
            server_name=host,
            path_to_template_file=TEMPLATE,
            path_for_config=PATH_FOR_CONFIG,
        )


if __name__ == "__main__":
    main()