import app.modules.db.sql as sql
import app.modules.db.server as server_sql
import app.modules.db.service as service_sql
import app.modules.common.common as common
import app.modules.server.server as server_mod
import app.modules.roxywi.common as roxywi_common
import app.modules.service.common as service_common


def common_action(server_ip: str, action: str, service: str) -> None:
    action_functions = {
        'haproxy': service_action,
        'nginx': service_action,
        'keepalived': service_action,
        'apache': service_action,
        'waf_haproxy': action_haproxy_waf,
        'waf_nginx': action_nginx_waf
    }

    action_functions[service](server_ip, action, service)


def service_action(server_ip: str, action: str, service: str) -> None:
    """
    :param server_ip: The IP address of the server on which the action will be performed.
    :param action: The action to be performed on the service (e.g., "start", "stop").
    :param service: The name of the service on which the action will be performed.
    :return: A string indicating the success or failure of the action.
    """
    service_common.is_protected(server_ip, action)
    server_id = server_sql.get_server_by_ip(server_ip).server_id

    if service_common.is_not_allowed_to_restart(server_id, service, action):
        raise Exception('This server is not allowed to be restarted')

    try:
        if service != 'keepalived':
            service_common.check_service_config(server_ip, server_id, service)
    except Exception as e:
        raise Exception(f'Cannot check config: {e}')

    command = get_action_command(service, action, server_id)
    server_mod.ssh_command(server_ip, command)
    roxywi_common.logging(server_ip, f'Service {service.title()} has been {action}ed', keep_history=1, service=service)


def get_action_command(service: str, action: str, server_id: int) -> str:
    """
    :param service: The name of the service for which the action command is needed.
    :param action: The action to be performed on the service (e.g. start, stop, restart).
    :param server_id: The ID of the server.

    :return: A list containing the action command that needs to be executed.
    """
    is_docker = service_sql.select_service_setting(server_id, service, 'dockerized')
    if is_docker == '1':
        container_name = sql.get_setting(f'{service}_container_name')
        if action == 'reload':
            action = 'kill -S HUP'
        commands = f"sudo docker {action} {container_name}"
    else:
        service_name = service_common.get_correct_service_name(service, server_id)
        commands = f"sudo systemctl {action} {service_name}"

    return commands


def action_haproxy_waf(server_ip: str, action: str, service: str) -> None:
    service_common.is_protected(server_ip, action)
    roxywi_common.logging(
        server_ip, f'HAProxy WAF service has been {action}ed', keep_history=1, service='haproxy'
    )
    command = f"sudo systemctl {action} waf"
    server_mod.ssh_command(server_ip, command)


def action_nginx_waf(server_ip: str, action: str, service: str) -> None:
    service_common.is_protected(server_ip, action)
    config_dir = common.return_nice_path(sql.get_setting('nginx_dir'))
    waf_new_state = 'on' if action == 'start' else 'off'
    waf_old_state = 'off' if action == 'start' else 'on'

    roxywi_common.logging(server_ip, f'NGINX WAF service has been {action}ed', keep_history=1, service='nginx')
    command = (f"sudo sed -i 's/modsecurity {waf_old_state}/modsecurity {waf_new_state}/g' {config_dir}nginx.conf "
               f"&& sudo systemctl reload nginx")

    server_mod.ssh_command(server_ip, command)