from crontab import CronTab
import logging


def post(user=None, task_id=None):
    """

        Stop a task.

    Parameters
    ----------
    user: str
        User id
    task_id: str
        Task id

    Returns
    -------
    result:
        result[0]: message
        result[1]: bool if it is stopped or not

    Notes
    -----
    % in any of string make script falls.

    >>> import requests
    >>> import json
    >>> params = {"user": 'test', task_id:'88657y!'}
    >>> requests.post(url='<IP:PORT>/MG/update/stop', json=params)
        ['Your task has successfully stopped', True]

    """
    user_taskid = "{}:{}".format(user, task_id)
    user_cron = CronTab(user=True)
    jobs = [job for job in user_cron.find_comment(user_taskid)]
    if len(jobs) > 1:
        logging.warning('There are two task with the same id, {}.'.format(task_id))
        result = ['Your task could not be removed', False]
    elif len(jobs) == 0:
        result = ['Wrong task id. This task does not exists.', False]
    else:
        jobs[0].enable(False)
        user_cron.write()
        result = ['Your task has successfully stopped', True]
    return result