# coding=utf-8
import datetime
import re
from django.db.models import Q
from access.models import User, ActionJ
from lms.decors import api_decor
from courses.models import Course, Lesson, Homework, CourseTheme
from courses.templates import comment_fabric
from journals.models import AchievementJ, LessonJ, HomeworkJ, ExamJ, check_journal, HomeworkTry, ExamTry
from finance.models import Bill
from courses.tools import set_read_flag, get_next_button
from management.letters import sent_comment_news, sent_teacher_answer, sent_to_teacher_answer, letter_delete_comment, \
    sent_new_comment
from management.models import Comment
from lms.settings import DOMAIN
from storage.models import Storage
from library.models import Article
import django.utils.timezone


@api_decor(without_auth=False, method='POST', need_keys=['id', 'material_id', 'text', 'type'], check_request=True)
def sent_comment_response(request, context):
    try:
        response = Comment.objects.get(id=request.POST['id'])
    except Comment:
        context['code'] = '0'
        context['response'] = u'Исходный комментарий не найден'
        return context
    comment = Comment.objects.create(owner=request.user, text=request.POST['text'], parent_id=response.id)

    if request.POST['type'] == 'L':
        try:
            material = Article.objects.get(id=request.POST['material_id'])
        except Article.DoesNotExists:
            context['code'] = '0'
            context['response'] = u'Статья не найдена'
            return context

    elif request.POST['type'] == 'A':
        try:
            material = Lesson.objects.get(id=request.POST['material_id'])
        except Lesson.DoesNotExists:
            context['code'] = '0'
            context['response'] = u'Урок не найден'
            return context

    response.replies.add(comment)
    response.response_comment = comment
    response.response = True
    response.saw.add(request.user)
    if response.owner.check_subscription('new_comment'):
        sent_comment_news(response, comment, material, _type=request.POST['type'])
    response.save()
    material.comments.add(comment)
    material.save()
    context['code'] = '1'
    return context


@api_decor(without_auth=False, method='POST', need_keys=['id'], check_request=True)
def close_achievement(request, context):
    # Пометка ачивки, как прочитанной
    a = AchievementJ.objects.get(id=request.POST['id'])
    a.got = True
    a.save()
    context['code'] = '1'
    return context


@api_decor(without_auth=False)
def get_achievement(request, context):
    # Получение ачивки пользователя, первой в очереди, не прочитанной
    context['code'] = '0'
    a = AchievementJ.objects.filter(student=request.user, got=False).first()
    if a:
        context['code'] = '1'
        context['data'] = {
            'id': a.id,
            'title': a.title,
            'text': a.text,
            'image': a.achievement.image.url,
            'border': a.achievement.border,
            'background': a.achievement.background
        }
    return context


@api_decor(without_auth=False)
def get_process_vector(request, context):
    return context


@api_decor(without_auth=False, need_keys=['id', 'user'], method='GET', check_request=True)
def check_bill(request, context):
    # Проверка оплаты
    # TODO: Применить новую модель доступов
    course = Course.objects.get(id=request.GET['id'])
    user = User.objects.get(id=request.GET['user'])
    context['code'] = '0'
    if Bill.objects.filter(service__course=course, user=user, status='F').exists():
        context['code'] = '1'
    return context


@api_decor(without_auth=False, need_keys=['lesson'], method='POST', check_request=True)
def read_lesson(request, context):
    # Пометка урока как прочитанного
    context['code'] = '1'
    try:
        lesson = Lesson.objects.get(id=request.POST['lesson'])
        journal = LessonJ.objects.get(student=request.user, material=Lesson.objects.get(id=request.POST['lesson']))
    except Lesson.DoesNotExist:
        context['code'] = '0'
    except LessonJ.DoesNotExist:
        context['code'] = '0'
    else:
        context['data'] = [journal.id, lesson.id]
        journal.saw_this()
    return context


@api_decor(without_auth=False)
def sent_lesson_comment(request, context):
    # Отправка комментария урока
    if request.POST['comment_sent_text']:
        lesson = Lesson.objects.get(id=request.POST['comment_for_lesson_id'])
        parent_id = request.POST['reply_for_comment_id']
        comment = Comment.objects.create(parent_id=parent_id, owner=request.user,
                                         text=request.POST['comment_sent_text'], date=django.utils.timezone.now())

        lesson.comments.add(comment)
        lesson.save()
        # Получение о добавление файлов комментария
        r = re.compile('^file_')
        files_keys = []
        for i in request.POST.keys():
            if r.match(i): files_keys.append(i)

        if files_keys:
            for i in files_keys:
                comment.files.add(Storage.objects.get(key=request.POST[i]))
                comment.save()

        if parent_id != '0':
            comment2 = Comment.objects.get(id=parent_id)
            if comment2.owner.check_subscription('new_comment'):
                sent_comment_news(comment2, comment, lesson)
        context['code'] = '1'
        context['data'] = comment.id

        if not comment.send:
            for eye in User.objects.filter(in_role='S2'):
                sent_new_comment(comment, lesson, eye.email)

    context['code'] = '1'
    return context


@api_decor(without_auth=True, need_keys=['lesson'], method='POST', check_request=True)
def load_lesson_comments(request, context):
    # Загрузка списка комментариев
    lesson = Lesson.objects.get(id=request.POST['lesson'])
    context['data'] = lesson.get_comments(_user=request.user)

    if len(context['data']) == 0:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


@api_decor(without_auth=True, need_keys=['id'], method='POST', check_request=True)
def load_comment(request, context):
    try:
        comment = Comment.objects.get(id=request.POST['id'])
    except Comment.DoesNotExist:
        context['code'] = '0'
    else:
        context['data'] = comment.get_face(__user=request.user)
    return context


@api_decor(without_auth=False)
def sent_homework_comment(request, context):
    # Отправка ДЗ попытки
    context['data'] = {}
    context['code'] = '0'
    if request.POST['homework_text']:
        homework = HomeworkJ.objects.get(id=request.POST['homework_id'], student=request.user)
        h_status = homework.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = HomeworkTry.objects.get_or_create(parent=homework, success=False, f_date=None, student=request.user,
                                                      material=homework.material)
            comment = Comment.objects.create(owner=request.user, text=request.POST['homework_text'],
                                             date=django.utils.timezone.now())
            ht.comments.add(comment)
            ht.save()
            if c:
                action = ActionJ.objects.create(student=homework.student,
                                                a_type='I',
                                                place=u'Курс  '+u'\xab'+u'{0}'.format(homework.material.course.get_title())+u'\xbb'+u', домашнее задание # {0}'.format(homework.material.theme.sort),
                                                text=u'Ваше <a href="{2}/courses/homework/{0}#comment_{1}" '
                                                     u'style="color: blue;">домашнее задание</a> отправлено на проверку.'
                                                     u''.format(homework.material.id, comment.id, DOMAIN))
                homework.date = datetime.datetime.now()
                if homework.student.check_subscription('teacher'):
                    sent_teacher_answer(action)

            # Отправка письма и активности преподавателю
            sent_to_teacher_answer(ActionJ.objects.create(
                student=ht.teacher,
                place=u'Студент: {0}, домашнее задание # {1}'.format(
                    homework.student,
                    homework.material.theme.sort),
                text=u'Текст: {0} <br><a href="{2}/teacher/workshop/homework/{1}" target="_blank">Перейти к проверке</a>'.format(comment.text,
                                                                                                          homework.id, DOMAIN),
                a_type='I'
            ))

            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}

    return context


@api_decor(without_auth=False)
def send_cancel_teach_comment(request, context):
    # Отправка на доработку для преподавателя
    # TODO: Перейти на модель попыток
    if request.POST['comment_sent_text']:
        lesson = HomeworkJ.objects.get(student__id=request.POST['comment_for_user_id'],
                                       material__theme=request.POST['comment_for_theme_id'], teacher=request.user)
        parent_id = request.POST['reply_for_comment_id']
        comment = Comment.objects.create(parent_id=parent_id, owner=request.user, status='F',
                                         text=request.POST['comment_sent_text'], date=django.utils.timezone.now())
        lesson.comments.add(comment)
        if lesson.status != 'F':
            lesson.status = 'E'
            action = ActionJ.objects.create(student=lesson.student,
                                            a_type='D',
                                            place=u'Курс '+u'\xab'+u'{0}'.format(lesson.homework.course.get_title())+u'\xbb'+u', домашнее задание # {0}'.format(lesson.homework.theme.sort),
                                            text=u'Ваше домашнее задание проверено преподавателем. '
                                                 u'<a href="{2}/courses/homework/{0}#comment_{1}" '
                                                 u'style="color: blue;">Вам необходимо провести работу над ошибками'
                                                 u'</a>'.format(
                                                lesson.material.id, comment.id, DOMAIN))
            if lesson.student.check_subscription('teacher'):
                sent_teacher_answer(action)

        lesson.save()

        r = re.compile('^file_')
        files_keys = []
        for i in request.POST.keys():
            if r.match(i): files_keys.append(i)

        if files_keys:
            for i in files_keys:
                comment.files.add(Storage.objects.get(key=request.POST[i]))
                comment.save()

        if parent_id != '0':
            comment2 = Comment.objects.get(id=parent_id)
            if comment2.owner.check_subscription('new_comment'):
                sent_comment_news(comment2, comment, lesson)
        context['code'] = '1'
        context['data'] = comment.id
    context['code'] = '1'
    return context


@api_decor(without_auth=False)
def send_accept_teach_comment(request, context):
    # Одобрение попытки ДЗ для преподавателя
    # TODO: Перейти на модель попыток
    lesson = HomeworkJ.objects.get(student__id=request.POST['comment_for_user_id'],
                                   material__theme=request.POST['comment_for_theme_id'], teacher=request.user)
    parent_id = request.POST['reply_for_comment_id']
    comment = Comment.objects.create(parent_id=parent_id, owner=request.user, status='G',
                                     text=request.POST['comment_sent_text'] + get_next_button(lesson.student, "H",
                                                                                              lesson.homework.theme.id),
                                     date=django.utils.timezone.now())
    lesson.comments.add(comment)
    if lesson.status != 'F':
        lesson.status = 'F'
        action = ActionJ.objects.create(student=lesson.student,
                                        a_type='S',
                                        place=u'Курс '+u'\xab'+u'{0}'.format(lesson.homework.course.get_title())+u'\xbb'+u', домашнее задание # {0}'.format(
                                                                                           lesson.homework.theme.sort),
                                        text=u'Ваше <a href="{2}/courses/homework/{0}#comment_{1}" '
                                             u'style="color: blue;">домашнее задание</a> одобрено преподавателем.'.format(
                                            lesson.material.id, comment.id, DOMAIN))
        if lesson.student.check_subscription('teacher'):
            sent_teacher_answer(action)

    set_read_flag(lesson.student, lesson.homework.course)
    lesson.save()

    r = re.compile('^file_')
    files_keys = []
    for i in request.POST.keys():
        if r.match(i): files_keys.append(i)

    if files_keys:
        for i in files_keys:
            comment.files.add(Storage.objects.get(key=request.POST[i]))
            comment.save()

    if parent_id != '0':
        comment2 = Comment.objects.get(id=parent_id)
        if comment2.owner.check_subscription('new_comment'):
            sent_comment_news(comment2, comment, lesson)
    context['code'] = '1'
    context['data'] = comment.id
    return context


@api_decor(without_auth=False)
def send_exam_cancel_teach_comment(request, context):
    # Отправка попытки на доработку для преподавателя
    # TODO: Перейти на модель попыток
    if request.POST['comment_sent_text']:
        lesson = ExamJ.objects.get(student__id=request.POST['comment_for_user_id'],
                                   material__course__id=request.POST['comment_for_theme_id'], teacher=request.user)
        parent_id = request.POST['reply_for_comment_id']
        comment = Comment.objects.create(parent_id=parent_id, owner=request.user, status='F',
                                         text=request.POST['comment_sent_text'], date=django.utils.timezone.now())
        lesson.comments.add(comment)
        if lesson.status != 'F':
            lesson.status = 'E'
            action = ActionJ.objects.create(student=lesson.student,
                                            a_type='D',
                                            place=u'Экзаменационная работа '+u'\xab'+u'{0}'.format(lesson.exam.course.get_title())+u'\xbb',
                                            text=u'Ваша работа отправлена на доработку. '
                                                 u'<a href="{1}/courses/exam/{0}" style="color: blue;">'
                                                 u'Вам необходимо провести работу над ошибками</a>'.format(
                                                lesson.material.id, DOMAIN))
            if lesson.student.check_subscription('teacher'):
                sent_teacher_answer(action)

        lesson.save()

        r = re.compile('^file_')
        files_keys = []
        for i in request.POST.keys():
            if r.match(i): files_keys.append(i)

        if files_keys:
            for i in files_keys:
                comment.files.add(Storage.objects.get(key=request.POST[i]))
                comment.save()

        if parent_id != '0':
            comment2 = Comment.objects.get(id=parent_id)
            if comment2.owner.check_subscription('new_comment'):
                sent_comment_news(comment2, comment, lesson)
        context['code'] = '1'
        context['data'] = comment.id
    context['code'] = '1'
    return context


@api_decor(without_auth=False)
def send_exam_accept_teach_comment(request, context):
    # Принятие экзамена для преподавателя
    # TODO: Перейти на модель попыток
    lesson = ExamJ.objects.get(student__id=request.POST['comment_for_user_id'],
                               material__course__id=request.POST['comment_for_theme_id'], teacher=request.user)
    parent_id = request.POST['reply_for_comment_id']
    comment = Comment.objects.create(parent_id=parent_id, owner=request.user, status='G',
                                     text=request.POST['comment_sent_text'] +
                                          request.POST['comment_sent_text'] + get_next_button(lesson.student, "E",
                                                                                              lesson.exam.course.id),
                                     date=django.utils.timezone.now())
    lesson.comments.add(comment)
    if lesson.status != 'F':
        lesson.status = 'F'
        action = ActionJ.objects.create(student=lesson.student,
                                        a_type='W',
                                        place=u'Экзаменационная работа  '+u'\xab'+u'{0}'.format(lesson.exam.course.get_title())+u'\xbb',
                                        text=u'Ваша <a href="{1}/courses/exam/{0}#" '
                                             u'style="color: blue;">экзаменационная работа</a> принята преподователем. '
                                             u'Поздравляем вас!'.format(
                                            lesson.material.id, DOMAIN))
        if lesson.student.check_subscription('teacher'):
            sent_teacher_answer(action)

    lesson.save()
    # TODO: Много повторений в других методах, переделать на отдельный метод
    r = re.compile('^file_')
    files_keys = []
    for i in request.POST.keys():
        if r.match(i): files_keys.append(i)

    if files_keys:
        for i in files_keys:
            comment.files.add(Storage.objects.get(key=request.POST[i]))
            comment.save()

    if parent_id != '0':
        comment2 = Comment.objects.get(id=parent_id)
        if comment2.owner.check_subscription('new_comment'):
            sent_comment_news(comment2, comment, lesson)
    context['code'] = '1'
    context['data'] = comment.id
    return context


@api_decor(without_auth=False, need_keys=['theme', 'student'], method='POST', check_request=True)
def load_homework_comments_for_teacher(request, context):
    # Получение комментариев для преподавателя
    # TODO: Перейти на модель попыток
    homework = HomeworkJ.objects.get(material__theme__id=request.POST['theme'], student__id=request.POST['student'],
                                     teacher=request.user)
    context['data'] = []
    for i in homework.comments.filter(parent_id='0').order_by('date'):
        context['data'].append(comment_fabric(i, __user=request.user))

    if len(context['data']) == 0:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


@api_decor(without_auth=False, need_keys=['theme', 'student'], method='POST', check_request=True)
def load_exam_comments_for_teacher(request, context):
    # Полечение попыток экзамена
    # TODO: Перейти на модель попыток
    homework = ExamJ.objects.get(material__course__id=request.POST['theme'], student__id=request.POST['student'],
                                 teacher=request.user)
    context['data'] = []
    for i in homework.comments.filter(parent_id='0').order_by('date'):
        context['data'].append(comment_fabric(i, __user=request.user))

    if len(context['data']) == 0:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


@api_decor(without_auth=False, need_keys=['homework'], method='POST', check_request=True)
def load_homework_comments(request, context):
    # Загрузка комментариев по ДЗ
    # TODO: Перейти на модель попыток
    homework = HomeworkJ.objects.get(material__id=request.POST['homework'], student=request.user)
    context['data'] = []
    for i in homework.comments.filter(parent_id='0').order_by('date'):
        context['data'].append(comment_fabric(i, __user=request.user))

    if len(context['data']) == 0:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


@api_decor(without_auth=False)
def sent_exam_comment(request, context):
    # Отправка попытки сутедентом
    context['data'] = {}
    context['code'] = '0'
    if request.POST['exam_text']:
        exam = ExamJ.objects.get(id=request.POST['exam_id'], student=request.user)
        h_status = exam.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = ExamTry.objects.get_or_create(parent=exam, success=False, f_date=None, student=request.user,
                                                  material=exam.material)
            comment = Comment.objects.create(owner=request.user, text=request.POST['exam_text'],
                                             date=django.utils.timezone.now())
            ht.comments.add(comment)
            ht.save()
            if c:
                action = ActionJ.objects.create(student=exam.student,
                                                a_type='I',
                                                place=u'Курс '+u'\xab'+u'{0}'.format(
                                                    exam.material.course.get_title())+u'\xbb'+u', Экзаменационная работа',
                                                text=u'Ваша <a href="{2}/courses/exam/{0}#comment_{1}" '
                                                     u'style="color: blue;">экзаменационная работа</a> отправлена на проверку.'
                                                     u''.format(exam.material.id, comment.id, DOMAIN))
                exam.date = datetime.datetime.now()
                if exam.student.check_subscription('teacher'):
                    sent_teacher_answer(action)

            # Отправка письма и активности преподавателю
            sent_to_teacher_answer(ActionJ.objects.create(
                student=ht.teacher,
                place=u'Студент: {0}, Экзамен'.format(exam.student),
                text=u'Текст: {0} <br><a href="{2}/teacher/workshop/exam/{1}" target="_blank">Перейти к проверке</a>'.format(comment.text, exam.id, DOMAIN),
                a_type='P'
            ))
            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}

    return context


@api_decor(without_auth=True, need_keys=['exam'], method='POST', check_request=True)
def load_exam_comments(request, context):
    # Загрузка попыток по экзаменам
    # TODO: Перейти на модель попыток
    exam = ExamJ.objects.get(material__id=request.POST['exam'])
    context['data'] = []
    for i in exam.comments.filter(parent_id='0').order_by('date'):
        context['data'].append(comment_fabric(i, __user=request.user))

    if len(context['data']) == 0:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


@api_decor(without_auth=False)
def delete_comment(request, context):
    comment = Comment.objects.get(id=request.POST.get('comment'))
    if comment.owner == request.user or request.user.is_admin:
        if request.POST.get('text'):
            letter_delete_comment(comment, request.POST.get('text'))

        if Comment.objects.filter(parent_id=comment.id, closed=False).exists():
            comment.closed = True
            comment.save()
        else:
            comment.delete()
            if comment.parent_id != '0' and Comment.objects.filter(id=comment.parent_id,
                                                                   closed=True).exists() and not Comment.objects.filter(
                parent_id=comment.parent_id).exists():
                Comment.objects.get(id=comment.parent_id).delete()

        context['code'] = '1'
    else:
        context['code'] = '0'
        context['response'] = u'Вы не можете удалить коммментарий, автором которого вы не являетесь'
    return context


@api_decor(without_auth=False)
def get_lesson_comments_length(request, context):
    context['code'] = '1'
    context['data'] = Lesson.objects.get(id=request.GET['id']).comments.filter(closed=False).count()
    return context


@api_decor(without_auth=False)
def get_homework_comments_length(request, context):
    context['code'] = '1'

    try:
        result = HomeworkJ.objects.get(material=Homework.objects.get(id=request.GET['id']),
                                       student=request.user).get_comments_length()
    except HomeworkJ.DoesNotExist:
        result = 0

    context['data'] = result
    return context


@api_decor(without_auth=False)
def get_homework_comments_length_for_teacher(request, context):
    context['code'] = '1'
    context['data'] = HomeworkJ.objects.get(material__theme__id=request.GET['id'], teacher=request.user,
                                            student__id=request.GET['student']).get_comments_length()
    return context


@api_decor(without_auth=False)
def get_exam_comments_length_for_teacher(request, context):
    context['code'] = '1'
    context['data'] = ExamJ.objects.get(material__course__id=request.GET['id'], teacher=request.user,
                                        student__id=request.GET['student']).get_comments_length()
    return context


@api_decor(without_auth=False)
def get_exam_comments_length(request, context):
    context['code'] = '1'
    context['data'] = ExamJ.objects.get(material__id=request.GET['id'], student=request.user).get_comments_length()
    return context


@api_decor(without_auth=False)
def get_comment_text(request, context):
    try:
        comment = Comment.objects.get(id=request.GET['comment'])
    except Comment.DoesNotExist:
        context['code'] = '0'
    else:
        context['code'] = '1'
        context['data'] = comment.get_text()
    return context


@api_decor(without_auth=False, need_keys=['ID'], check_request=True, method='GET')
def get_lesson_context(request, context):
    if request.user.in_role != 'U':
        lesson = Lesson.objects.get(id=request.GET['ID'])
        materials = [] if lesson.materials.all() else ''
        for i in lesson.materials.all():
            materials.append({
                'url': i.original.url,
                'id': 'single_image' if i.f_format.f_type == 'I' else '',
                'file_name': i.get_file_name(),
                'name_for_user': i.get_name_for_user(),
                'icon_class': i.f_format.icon_class
            })
        context['data'] = {
            'video': lesson.video,
            'description': lesson.description,
            'title': lesson.title,
            'materials': materials
        }
        context['code'] = '1'
    return context


@api_decor(without_auth=False, need_keys=['start_place_type', 'start_place_id'], method='GET', check_request=True)
def get_next_button_ajax(request, context):
    # Получение следующей кнопки
    context['data'] = get_next_button(request.user,
                                      request.GET['start_place_type'],
                                      request.GET['start_place_id'])
    context['code'] = '1'
    return context


@api_decor(without_auth=True, need_keys=['id'], method='GET', check_request=True)
def by_course_data(request, context):
    # Получить информацию окна покупки для курса
    try:
        course = Course.objects.get(id=request.GET['id'])
    except Course.DoesNotExist:
        context['code'] = '1'
    else:
        context['code'] = '1'
        context['data'] = {
            'image': course.buy_icon.url if course.buy_icon else '/static/img/1442791218_certificate.png',
            'name': course.title,
            'basic': CourseTheme.objects.filter(course=course,
                                                _type='B').count() if not course.use_fail or course.basic_len == 0 else course.basic_len,
            'addition': CourseTheme.objects.filter(
                Q(course=course, _type='A') | Q(course=course, _type='P') | Q(course=course,
                                                                              _type='M')).count() if not course.use_fail or course.addition_len == 0 else course.addition_len,
            'min_price': 6777 if course.min_price == 0 else course.min_price
        }
    return context


@api_decor(without_auth=False, need_keys=['ID'], method='GET', check_request=True)
def get_homework_context(request, context):
    # Получение информации из ДЗ
    if request.user.in_role != 'U':
        homework = CourseTheme.objects.get(id=request.GET['ID']).get_homework()
        materials = [] if homework.materials.all() else ''
        for i in homework.materials.all():
            materials.append({
                'url': i.original.url,
                'id': 'single_image' if i.f_format.f_type == 'I' else '',
                'file_name': i.get_file_name(),
                'name_for_user': i.get_name_for_user(),
                'icon_class': i.f_format.icon_class
            })
        context['data'] = {
            'description': homework.description,
            'materials': materials
        }
        context['code'] = '1'
    return context


@api_decor(without_auth=False)
def sent_homework_up_teacher(request, context):
    context['data'] = {}
    context['code'] = '0'
    if request.POST['homework_text']:
        homework = HomeworkJ.objects.get(id=request.POST['homework_id'])
        h_status = homework.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = HomeworkTry.objects.get_or_create(parent=homework, success=False, f_date=None, teacher=request.user,
                                                      material=homework.material, student=homework.student)
            comment = Comment.objects.create(owner=request.user, status='G',
                                             text=request.POST['homework_text'],
                                             date=django.utils.timezone.now())
            ht.comments.add(comment)

            action = ActionJ.objects.create(student=ht.student,
                                            a_type='I',
                                            place=u'Курс '+u'\xab'+u'{0}'.format(homework.material.course.get_title())+u'\xbb'+u', домашнее задание # {0}'.format(homework.material.theme.sort),
                                            text=u'Ваше <a href="{2}/courses/homework/{0}#comment_{1}" '
                                                 u'style="color: blue;">домашнее задание</a> одобрено преподавателем.'.format(
                                                homework.material.id, comment.id, DOMAIN))

            if homework.student.check_subscription('teacher'):
                sent_teacher_answer(action)

            # Отправка письма и активности преподавателю
            sent_to_teacher_answer(ActionJ.objects.create(
                student=ht.get_teacher(),
                place=u'Студент: {0}, домашнее задание # {1}'.format(
                    homework.student,
                    homework.material.theme.sort),
                text=u'Задание одобрено',
                a_type='S'
            ))

            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}
            ht.saw_this()

    homework.success = True
    homework.save()
    return context


@api_decor(without_auth=False)
def sent_homework_down_teacher(request, context):
    context['data'] = {}
    context['code'] = '0'
    if request.POST['homework_text'] and request.user.in_role == 'T':
        homework = HomeworkJ.objects.get(id=request.POST['homework_id'])
        h_status = homework.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = HomeworkTry.objects.get_or_create(parent=homework, success=False, f_date=None, teacher=request.user,
                                                      material=homework.material, student=homework.student)
            comment = Comment.objects.create(owner=request.user, date=django.utils.timezone.now(), status='F',
                                             text=request.POST['homework_text'])
            ht.comments.add(comment)
            ht.success = False
            ht.f_date = datetime.datetime.now()
            ht.save()
            action = ActionJ.objects.create(student=ht.student,
                                            a_type='S',
                                            place=u'Курс '+u'\xab'+u'{0}'.format(homework.material.course.get_title())+u'\xbb'+u', домашнее задание # {0}'.format(homework.material.theme.sort),
                                            text=u'Ваше домашнее задание проверено преподавателем. '
                                                 u'<a href="{2}/courses/homework/{0}#comment_{1}" '
                                                 u'style="color: blue;">Вам необходимо провести работу над ошибками'
                                                 u'</a>'.format(
                                                homework.material.id, comment.id, DOMAIN))

            if ht.student.check_subscription('teacher'):
                sent_teacher_answer(action)


            # Отправка письма и активности преподавателю
            ActionJ.objects.create(
                student=ht.get_teacher(),
                place=u'Студент: {0}, домашнее задание # {1}'.format(
                    homework.student,
                    homework.material.theme.sort),
                text=u'Задание отправлено на доработку',
                a_type='D'
            )

            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}
    return context


@api_decor(without_auth=False)
def sent_exam_up_teacher(request, context):
    context['data'] = {}
    context['code'] = '0'
    if request.POST['exam_text']:
        homework = ExamJ.objects.get(id=request.POST['exam_id'])
        h_status = homework.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = ExamTry.objects.get_or_create(parent=homework, success=False, f_date=None, teacher=request.user,
                                                  material=homework.material, student=homework.student)
            comment = Comment.objects.create(owner=request.user, status='G',
                                             text=request.POST['exam_text'],
                                             date=django.utils.timezone.now())
            ht.comments.add(comment)
            action = ActionJ.objects.create(student=ht.student,
                                            a_type='W',
                                            place=u'Экзаменационная работа '+u'\xab'+u'{0}'.format(
                                                ht.material.course.get_title())+u'\xbb',
                                            text=u'Ваша <a href="{1}/courses/exam/{0}#" '
                                                 u'style="color: blue;">экзаменационная работа</a> принята преподователем. '
                                                 u'Поздравляем вас!'.format(
                                                ht.material.id, DOMAIN))

            if homework.student.check_subscription('teacher'):
                sent_teacher_answer(action)

            # Отправка письма и активности преподавателю
            ActionJ.objects.create(
                student=ht.get_teacher(),
                place=u'Студент: {0}, Экзамен'.format(homework.student),
                text=u'Экзамен одобрен',
                a_type='S'
            )

            if not ExamTry.objects.filter(teacher=homework.teacher, success=True).exists():
                # Отправка письма и активности преподавателю
                ActionJ.objects.create(
                    student=ht.teacher,
                    place=u'Студент: {0}, Экзамен'.format(homework.student),
                    text=u'Поздравляем. Ваш первый студент дошедший до конца',
                    a_type='W'
                )

            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}
            ht.saw_this()
    return context


@api_decor(without_auth=False)
def sent_exam_down_teacher(request, context):
    context['data'] = {}
    context['code'] = '0'
    if request.POST['exam_text'] and request.user.in_role == 'T':
        homework = ExamJ.objects.get(id=request.POST['exam_id'])
        h_status = homework.get_status_flag()
        if h_status not in ['N', 'F']:
            ht, c = ExamTry.objects.get_or_create(parent=homework, success=False, f_date=None, teacher=request.user,
                                                  material=homework.material, student=homework.student)
            comment = Comment.objects.create(owner=request.user, date=django.utils.timezone.now(), status='F',
                                             text=request.POST['exam_text'])
            ht.comments.add(comment)
            ht.f_date = datetime.datetime.now()
            ht.save()
            action = ActionJ.objects.create(student=ht.student,
                                            a_type='D',
                                            place=u'Экзаменационная работа '+u'\xab'+u'{0}'.format(
                                                ht.material.course.get_title())+u'\xbb',
                                            text=u'Ваша работа отправлена на доработку. '
                                                 u'<a href="{1}/courses/exam/{0}" style="color: blue;">'
                                                 u'Вам необходимо провести работу над ошибками</a>'.format(
                                                ht.material.id, DOMAIN))

            if ht.student.check_subscription('teacher'):
                sent_teacher_answer(action)

            # Отправка письма и активности преподавателю
            ActionJ.objects.create(
                student=ht.get_teacher(),
                place=u'Студент: {0}, Экзамен'.format(homework.student),
                text=u'Задание отправлено на доработку',
                a_type='D'
            )

            # Проверка и загрузка файлов
            r = re.compile('^file_')
            files_keys = []
            for i in request.POST.keys():
                if r.match(i): files_keys.append(i)

            if files_keys:
                for i in files_keys:
                    comment.files.add(Storage.objects.get(key=request.POST[i]))
                    comment.save()

            context['code'] = '1'
            context['data'] = {'try': ht.get_head_face(), 'comment': comment.get_face()}
    return context