import logging
import os

from django.template.loader import render_to_string

from events.constants import ELK_URL, ELK_LOGIN, ELK_PASS
from inputs.constants import LOGSTASH_CONFIG_DIR
from inputs.enums import LogInputType
from inputs.models import LogInputArmaIF, LogInputEndpoint

_log = logging.getLogger(__name__)


def update_arma_config(arma: LogInputArmaIF):
    input = arma.input

    if input.type != LogInputType.ARMAIF:
        _log.error(f'Call update_arma_config with input type {input.type}')
        return

    if not input.config_file_name:
        input.config_file_name = get_config_name(input)
        input.save()

    context = {
        "pk": input.pk,
        "port": arma.port,
        "elastic_url": ELK_URL,
        "elastic_login": ELK_LOGIN,
        "elastic_pass": ELK_PASS,
        "adjust_datetime": input.adjust_datetime,
    }

    config = render_to_string("vector/config/armaif.toml", context)
    update_config(input, config)


def update_endpoint_config(endpoint: LogInputEndpoint):
    input = endpoint.input

    if input.type != LogInputType.ENDPOINT:
        _log.error(f'Call update_endpoint_config with input type {input.type}')
        return

    if not input.config_file_name:
        input.config_file_name = get_config_name(input)
        input.save()

    context = {
        "pk": input.pk,
        "port": endpoint.port,
        "elastic_url": ELK_URL,
        "elastic_login": ELK_LOGIN,
        "elastic_pass": ELK_PASS,
        "adjust_datetime": input.adjust_datetime,
    }
    config = render_to_string(
        'vector/config/endpoint.toml', context)
    update_config(input, config)


def update_config(input, config_content: str):
    """ Write new config content to correct file"""
    with open(os.path.join(LOGSTASH_CONFIG_DIR, input.config_file_name), 'w') as f:
        # with open(os.path.join('/usr/src/app/public/vector', input.config_file_name), 'w') as f:
        f.write(config_content)


def get_config_name(log_input) -> str:
    if log_input.type == LogInputType.ARMAIF:
        return f'armaif_{log_input.pk}.toml'
    elif log_input.type == LogInputType.ENDPOINT:
        return f'endpoint_{log_input.pk}.toml'
    else:
        raise RuntimeError(f"Can't made config name for type {log_input.type}")