from pytask.taskapp.models import Task, TaskComment

from pytask.taskapp.forms import CreateTaskForm, EditTaskForm, TaskCommentForm

from pytask.taskapp.utils import getTask

def view_task(request, tid):

    """ get the task depending on its tid and display accordingly if it is a get.

    check for authentication and add a comment if it is a post request.

    """

    task_url = "/task/view/tid=%s"%tid

    task = getTask(tid)

    user = request.user

    profile = user.get_profile()

    context = {"user": user,

               "profile": profile,

               "task": task,

              }

    context.update(csrf(request))

    if task.status == "DL":

        return show_msg(user, 'This task no longer exists', '/task/browse/','browse the tasks')

    comments = task.comments.filter(is_deleted=False).order_by('comment_datetime')

    reviewers = task.reviewers.all()

    is_guest = True if not user.is_authenticated() else False

    is_reviewer = True if user in task.reviewers.all() else False

    context.update({'is_guest':is_guest,

                    'is_reviewer':is_reviewer,

                    'comments':comments,

                    'reviewers':reviewers,

                   })

    claimed_users = task.claimed_users.all()

#    is_requested_reviewer = True if user.is_authenticated() and user.request_sent_to.filter(is_valid=True,is_replied=False,role="MT",task=task) else False

#    task_viewable = True if ( task.status != "UP" ) or is_reviewer or is_requested_reviewer else False

#    if not task_viewable:

#        return show_msg(user, "You are not authorised to view this task", "/task/browse/", "browse the tasks")

#    context['is_requested_reviewer'] = is_requested_reviewer

    context['can_publish'] = True if task.status == "UP" and user == task.created_by else False

    context['can_edit'] = True if task.status == "UP" and is_reviewer else False

    context['can_close'] = True if task.status not in ["UP", "CD", "CM"] and is_reviewer else False

    context['can_delete'] = True if task.status == "UP" and user == task.created_by else False

    context['can_mod_reviewers'] = True if task.status in ["UP", "OP", "LO", "WR"] and is_reviewer else False

    context['can_mod_tasks'] = True if task.status in ["UP", "OP", "LO"] and is_reviewer else False

    context['can_assign_pynts'] = True if task.status in ["OP", "WR"] and is_reviewer else False

    context['task_claimable'] = True if task.status in ["OP", "WR"] and not is_guest else False

#    if task.status == "CD":

#        context['closing_notification'] =  Notification.objects.filter(task=task,role="CD")[0]

#    elif task.status == "CM":

#        context['completed_notification'] =  Notifications.objects.filter(task=task,role="CM")[0]

#    elif task.status == "WR":

#        context['assigned_users'] = task.assigned_users.all()

    if request.method == 'POST':

        if not is_guest:

            form = TaskCommentForm(request.POST)

            if form.is_valid():

                data = form.cleaned_data['data']

                new_comment = TaskComment(task=task, data=data,

                                          uniq_key=make_key(TaskComment),

                                          commented_by=user, comment_datetime=datetime.now())

                new_comment.save()

                return redirect(task_url)

            else:

                context['form'] = form

                return render_to_response('task/view.html', context)

        else:

            return redirect(task_url)

    else:

        form = TaskCommentForm()

        context['form'] = form

        return render_to_response('task/view.html', context)