# coding=utf-8
from django.contrib.auth.decorators import login_required, permission_required
from django.core.exceptions import PermissionDenied
from django.shortcuts import render, redirect, get_object_or_404
from abonapp.models import Abon
from datetime import date
from models import Task
from mydefs import pag_mn, only_admins, safe_int
from forms import TaskFrm


@login_required
@only_admins
def home(request):
    tasks = Task.objects.filter(recipients=request.user, state='S')  # Новые задачи

    # filter
    # dir, field = order_helper(request)
    #if field:
    #    tasks = tasks.order_by(field)

    tasks = pag_mn(request, tasks)

    return render(request, 'taskapp/tasklist.html', {
        'tasks': tasks
    })


@login_required
@only_admins
def active_tasks(request):
    tasks = Task.objects.filter(recipients=request.user, state='C')  # На выполнении
    tasks = pag_mn(request, tasks)
    return render(request, 'taskapp/tasklist_active.html', {
        'tasks': tasks
    })


@login_required
@only_admins
def finished_tasks(request):
    tasks = Task.objects.filter(recipients=request.user, state='F')  # Выполненные
    tasks = pag_mn(request, tasks)
    return render(request, 'taskapp/tasklist_finish.html', {
        'tasks': tasks
    })


@login_required
@only_admins
def own_tasks(request):
    tasks = Task.objects.filter(author=request.user).exclude(state='F')  # Назначенные мной и не законченная
    tasks = pag_mn(request, tasks)
    return render(request, 'taskapp/tasklist_own.html', {
        'tasks': tasks
    })


@login_required
@only_admins
def my_tasks(request):
    tasks = Task.objects.filter(recipients=request.user)  # Задачи где я учавствовал
    tasks = pag_mn(request, tasks)
    return render(request, 'taskapp/tasklist.html', {
        'tasks': tasks
    })


@login_required
@permission_required('taskapp.can_viewall')
def all_tasks(request):
    tasks = Task.objects.all()
    return render(request, 'taskapp/tasklist_all.html', {
        'tasks': tasks
    })


@login_required
@permission_required('taskapp.delete_task')
def task_delete(request, task_id):
    task = get_object_or_404(Task, id=task_id)
    # нельзя удалить назначенную мне задачу
    if request.user not in task.recipients.all():
        task.delete()
    return redirect('taskapp:home')


@login_required
@only_admins
def view(request, task_id):
    tsk = get_object_or_404(Task, id=task_id)
    toc = date(tsk.time_of_create.year, tsk.time_of_create.month, tsk.time_of_create.day)
    time_diff = tsk.out_date - toc
    return render(request, 'taskapp/view.html', {
        'task': tsk,
        'time_diff': time_diff
    })


@login_required
@only_admins
def task_add_edit(request, task_id=0):
    task_id = safe_int(task_id)
    warntext = ''
    uid = request.GET.get('uid')
    selected_abon = None
    frm = TaskFrm()

    # чтоб при добавлении сразу был выбран исполнитель
    #frm_recipient_id = safe_int(request.GET.get('rp'))

    if task_id == 0:
        if not request.user.has_perm('taskapp:add_task'):
            raise PermissionDenied
        tsk = Task()
    else:
        if not request.user.has_perm('taskapp:change_task'):
            raise PermissionDenied
        tsk = get_object_or_404(Task, id=task_id)
        frm = TaskFrm(instance=tsk)
        selected_abon = tsk.abon

    if uid:
        selected_abon = get_object_or_404(Abon, username=str(uid))

    if request.method == 'POST':

        tsk.author = request.user
        frm = TaskFrm(request.POST, request.FILES, instance=tsk)

        if frm.is_valid():
            task_instance = frm.save()
            # получим абонента, выбранного в форме
            selected_abon = task_instance.abon
            if selected_abon:
                # получаем аккаунты назначенные на группу выбранного абонента
                profiles = selected_abon.group.profiles.filter(is_active=True).filter(is_admin=True)

                # если нашли кого-нибудь
                if profiles.count() > 0:
                    # выбираем их id в базе
                    profile_ids = [prof.id for prof in profiles]
                    # добавляем найденных работников в задачу
                    task_instance.recipients.add(*profile_ids)
                    # окончательно сохраняемся
                    task_instance.save()
                    return redirect('taskapp:home')
                else:
                    warntext=u'Нет ответственных за группу, в которой находится выбранный абонент'
            else:
                warntext=u'Нужно выбрать абонента'
        else:
            warntext = u'Ошибка в полях формы в задаче'

    return render(request, 'taskapp/add_edit_task.html', {
        'warntext': warntext,
        'form': frm,
        'task_id': tsk.id,
        'selected_abon': selected_abon
    })


@login_required
@only_admins
def task_finish(request, task_id):
    task = get_object_or_404(Task, id=task_id)
    task.finish(request.user)
    return redirect('taskapp:home')


@login_required
@only_admins
def task_begin(request, task_id):
    task = get_object_or_404(Task, id=task_id)
    task.begin(request.user)
    return redirect('taskapp:home')


@login_required
@permission_required('taskapp.can_remind')
def remind(request, task_id):
    task = get_object_or_404(Task, id=task_id)
    task.save(update_fields=['state'])
    return redirect('taskapp:home')