# coding=utf-8
from django.db.models import Q
from django.http import Http404
from access.models import User
from lms.decors import api_decor
from courses.models import Course, Exam, Lesson, Homework
from finance.models import ServiceRequest, Bill, Price
from finance.tools import system_check_bill
from lms.settings import DOMAIN


@api_decor(without_auth=False, need_keys=['id', 'type'], method='POST', check_request=True)
def check_materials_access(request, context):
    if request.user.is_authenticated() and request.user.is_admin:
        context['code'] = '1'
        return context

    material = None
    theme_type = 'B'
    if request.POST['type'] == 'homework':
        material = Homework.objects.get(id=request.POST['id'])
        theme_type = material.theme.price_type

    elif request.POST['type'] == 'exam':
        material = Exam.objects.get(id=request.POST['id'])
        theme_type = material.theme.price_type

    elif request.POST['type'] == 'lesson':
        material = Lesson.objects.get(id=request.POST['id'])
        if material.free:
            context['code'] = '1'
            return context
        theme_type = material.theme.price_type

    if material and system_check_bill(material.token, request.user, theme_type=theme_type):
        context['code'] = '1'
    else:
        context['code'] = '0'
        context['response'] = material.token
        
    return context


@api_decor(without_auth=True, method='POST', need_keys=['key'], check_request=True)
def send_self_bill(request, context):
    context['code'] = '0'
    if not request.POST.get('fname'):
        context['response'] = u'Фамилия не указана'
        return context

    if not request.POST.get('name'):
        context['response'] = u'Имя не указано'
        return context

    if not request.POST.get('oname'):
        context['response'] = u'Очество не указано'
        return context

    if not request.POST.get('phone'):
        context['response'] = u'Телефон не указан'
        return context

    if not request.POST.get('email'):
        context['response'] = u'Электронный адрес не указан'
        return context

    try:
        price = Price.objects.get(key=request.POST['key'])
    except Price.DoesNotExist:
        raise Http404
    else:
        context['code'] = '1'
        user, c = User.objects.get_or_create(email=request.POST['email'])
        if not user.phone:
            user.phone = request.POST['phone']
        if not user.name:
            user.name = request.POST['name']
        if not user.oname:
            user.oname = request.POST['oname']
        if not user.fname:
            user.fname = request.POST['fname']
        if c:
            user.in_role = 'F'
        user.save()
        try:
            bill = Bill.objects.get(service=price, price=price.cost, user=user)
        except Bill.DoesNotExist:
            bill = Bill.objects.create(service=price, price=price.cost, user=user, manager=User.objects.get(id=1325))
            context['data'] = bill.gen_robokassa_url()
        else:
            if bill.status == 'F':
                context['code'] = '0'
                context['response'] = u'Счет уже оплачен <b>ID счета: %s</b>' % bill.id
            else:
                context['data'] = bill.gen_robokassa_url()

    return context


@api_decor(without_auth=False, need_keys=['id'], method='GET', check_request=True)
def cancel_order(request, context):
    try:
        bill = Bill.objects.get(id=request.GET['id'])
    except Bill.DoesNotExist:
        pass
    else:
        bill.status = 'C'
        bill.save()
    return context


@api_decor(without_auth=False, need_keys=['id'], method='GET', check_request=True)
def sent_order(request, context):
    try:
        bill = Bill.objects.get(id=request.GET['id'])
    except Bill.DoesNotExist:
        context['data'] = DOMAIN
        context['code'] = '0'
    else:
        if bill.status in ['F', 'H']:
            context['code'] = '0'
            context['response'] = u'Оплата счета не возможна'
        else:
            bill.status = 'P'
            context['code'] = '1'
            bill.save()
            context['data'] = bill.get_face()

    return context


@api_decor(without_auth=False, need_keys=['id', 'status'], method='GET', check_request=True)
def change_service_request_status(request, context):
    s = ServiceRequest.objects.get(id=request.GET['id'])
    s.status = request.GET['status']
    s.manager = request.user
    if request.GET.get('description'):
        s.cancel_description = request.GET['description']
    s.save()
    return context


@api_decor(without_auth=False, need_keys=['id'], method='GET', check_request=True)
def check_service_request(request, context):
    s = ServiceRequest.objects.get(id=request.GET['id'])
    if s.manager and s.manager != request.user:
        context['code'] = '0'
    else:
        context['code'] = '1'
    return context


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


@api_decor(without_auth=False, need_keys=['type'], method='POST', check_request=True)
def create_service_request(request, context):
    if request.POST.get('course'):
        course = Course.objects.get(id=request.POST['course'])
        if ServiceRequest.objects.filter(
                        Q(status='S', student=request.user, course=course) | Q(status='W', student=request.user,
                                                                               course=course)).exists():
            context['code'] = '0'
            context['response'] = u'Вы уже отправляли запрос на покупку этого курса. Запрос еще не обработан.'

        elif Bill.objects.filter(user=request.user, status='W', service__course=course).exists():
            context['code'] = '0'
            context['response'] = u'Счет на покупку этого курса уже был выставлен.'

        else:
            context['code'] = '1'
            ServiceRequest.objects.create(student=request.user, course=course, _type=request.POST['type'])
            context['data'] = {'course': course.title}
            context['data']['phone'] = request.user.get_phone()
    else:
        context['code'] = '1'
        ServiceRequest.objects.get_or_create(student=request.user, _type=request.POST['type'])
        context['data'] = {'course': ''}
        context['data']['phone'] = request.user.get_phone()
    return context


@api_decor(without_auth=False, need_keys=['id'], method='POST', check_request=True)
def cancel_service_request(request, context):
    bill = ServiceRequest.objects.get(id=request.POST['id'])
    bill.status = 'B'
    bill.save()
    return context


@api_decor(without_auth=False, need_keys=['ID'], method='POST', check_request=True)
def remove_service_request(request, context):
    try:
        service_request = ServiceRequest.objects.get(id=request.POST['ID'])
    except ServiceRequest.DoesNotExist:
        context['code'] = '0'
        context['response'] = u'Запрос не найден'
    else:
        if request.user.in_role in ['A', 'S', 'S2']:
            service_request.delete()
            context['code'] = '1'
        else:
            context['code'] = '0'
            context['response'] = u'Не достаточно прав'
    return context


@api_decor(without_auth=False, need_keys=['id'], method='GET', check_request=True)
def reply_bill(request, context):
    try:
        bill = Bill.objects.get(id=request.GET['id'])
    except Bill.DoesNotExist:
        context['code'] = '0'
    else:
        bill.status = 'W'
        bill.save()
        context['code'] = '1'
    return context


@api_decor(without_auth=False)
def get_user_from_bill_id(request, context):
    # Получение пользователя привязанного к счету
    if request.user.in_role == 'S':
        try:
            bill = Bill.objects.get(id=request.GET['id'])
        except Bill.DoesNotExist:
            context['code'] = '0'
            context['response'] = 'Счет с таким ID не найден'
        else:
            context['data'] = bill.get_face()
            context['code'] = '1'
    else:
        raise Http404
    return context