from datetime import datetime
from pytask.taskapp.models import Profile, Task, Comment, Credit

def publishTask(task):
    """ set the task status to open """
    
    task.status = "OP"
    task.save()
    return task

def addMentor(task,mentor):
    """ add the mentor to mentors list of the task """
    
    task.mentors.add(mentor)
    task.save()
    return task    
    
def createTask(title,desc,created_by,credits):
    """ creates a bare minimum task with title, description and credits.
    the creator of the task will be assigned as a mentor for the task.
    """

    try:
        task = Task.objects.get(title__iexact=title)
        return None
    except Task.DoesNotExist:
        task = Task(title=title)
    task.desc = desc
    task.created_by = created_by
    task.credits = credits
    task.creation_datetime = datetime.now()
    task.save()
    return task

def addSubTask(main_task, sub_task):
    """ add sub_task to subs list of main_task """
    
    main_task.subs.add(sub_task)
    main_task.status = "LO"
    main_task.save()
    return main_task