# -*- coding: utf-8 -*-
import dateutil.relativedelta as rdelta
import json, datetime
import calendar as python_calendar
from django.shortcuts import get_object_or_404
from django.http import HttpResponseRedirect, HttpResponse, Http404
from django.contrib.auth.decorators import login_required
from django.utils.translation import ugettext as _, get_language
from django.utils import timezone
from django_messages.forms import SendForm
from django.views.generic import TemplateView, FormView, ListView
from sorl.thumbnail import get_thumbnail
from .forms import ChangePasswordForm, EmailAnnouncementForm, FeedFilterForm
from company.forms import CreateCompanyForm
from .models import User
from .edit_forms import AvatarForm, NameForm, HomeForm, WorkForm, AboutCompanyForm, PhoneForm, EmailForm,\
                       WebPageForm, SocialForm, AboutForm



class SettingsView(TemplateView):
    """
    display template with user settings like:
        password, email notifications, social settings, subscription

    """
    template_name = 'accounts/settings.html'
    def get_context_data(self, **kwargs):
        context = super(SettingsView, self).get_context_data(**kwargs)
        context['change_password_form'] = ChangePasswordForm()
        context['email_announcement_form'] = EmailAnnouncementForm()
        return context

def dates_range(date1, date2):
    delta = date2 - date1
    dates = []
    for i in range(delta.days + 1):
        dates.append(date1 + datetime.timedelta(days=i))
    return dates

class CalendarView(TemplateView):
    """
    display template with user calendar(one month)
    """

    template_name = 'accounts/calendar.html'

    def get_context_data(self, **kwargs):
        """
        get events by 1 month and return to template

        return additional variables:
            - events - events in current months
            - days - days in current month
            - current_day

        """
        context = super(CalendarView, self).get_context_data(**kwargs)
        now = timezone.now().replace(microsecond=0, second=0, minute=0, hour=0)
        context['current_day'] = now

        year = self.request.GET.get('year')
        month = self.request.GET.get('month')
        if year:
            year = int(year)
        if month:
            month = int(month)

        if not year or not month:
            # events in current months
            number_of_days = python_calendar.monthrange(now.year, now.month)[1]
            # number of days in current month
            days = [timezone.make_aware(datetime.datetime(now.year, now.month, i+1), timezone.get_default_timezone()) for i in range(number_of_days)]
            #context['days'] = days

            calendar = self.request.user.calendar
            # events in current month
            context['events'] = calendar.events_by_month(now)
        else:

            number_of_days = python_calendar.monthrange(year, month)[1]
            days = [timezone.make_aware(datetime.datetime(year, month, i+1), timezone.get_default_timezone()) for i in range(number_of_days)]
            # number of days in current month
            #context['days'] = days
            calendar = self.request.user.calendar
            now = now.replace(year=year, month=month, day=1)
            # events in current month
            context['events'] = calendar.events_by_month(now)


        # add days from previous mondey to next sunday

        first_day = days[0]
        if first_day.weekday() != 0:
            past_monday = first_day + rdelta.relativedelta(days=-1, weekday=rdelta.MO(-1))
            a = [past_monday + datetime.timedelta(days=x) for x in range((first_day - past_monday).days)]
            days = a + days


        last_day = days[-1]

        if last_day != 6:
            next_sunday = last_day + rdelta.relativedelta(days=1, weekday=rdelta.SU(+1))
            b = [last_day + datetime.timedelta(days=x+1) for x in range((next_sunday - last_day).days)]
            days += b

        events = context['events']
        context['days'] = days
        #days = context['days']
        event_in_day = False
        counter = 0
        dates_with_events = []
        for event in events:
            dates_with_events += dates_range(event.data_begin, event.data_end)

        dates_with_events = list(set(dates_with_events))
        day_colspan = {}
        for day in days:
            if day.date() in dates_with_events:
                day_colspan[day] = {'event': True}
            else:
                day_colspan[day] = {'event': False}
                previous_day = day - datetime.timedelta(days=1)
                if previous_day not in days:
                    day_colspan[day]['start'] = day
                else:
                    if day_colspan[previous_day]['event']:
                        day_colspan[day]['start'] = day
                    else:
                        day_colspan[day]['start'] = day_colspan[previous_day]['start']
                if day_colspan[day_colspan[day]['start']].get('counter'):

                    day_colspan[day_colspan[day]['start']]['counter'] += 1
                else:
                    day_colspan[day_colspan[day]['start']]['counter'] = 1
        context['day_colspan'] = day_colspan

        return context



class ProfileView(TemplateView):
    """
    display template with user information forms

    in template forms handles dynamically by ajax
    """
    template_name = 'accounts/new_profile.html'

    def get_context_data(self, **kwargs):
        context = super(ProfileView, self).get_context_data(**kwargs)
        user = self.request.user
        profile = user.profile

        profile_forms = {
            'avatar_form': AvatarForm(instance=profile), 'name_form': NameForm(instance=user),
            'home_form': HomeForm(instance=profile), 'work_form': WorkForm(instance=user),
            'about_company_form': AboutCompanyForm(instance=profile), 'phone_form': PhoneForm(instance=profile),
            'email_form': EmailForm(instance=user), 'web_page_form': WebPageForm(instance=profile),
            'social_form': SocialForm(instance=profile), 'about_form': AboutForm(instance=profile)
        }
        if not user.company:
            company_form = {'company_form': CreateCompanyForm()}
            context.update(company_form)

        context.update(profile_forms)
        return context

from company.edit_forms import NameForm as CompNameForm, HomeForm as CompHomeForm, PhoneForm as CompPhoneForm,\
                               EmailForm as CompEmailForm, WebPageForm as CompWebPageForm, SocialForm as CompSocialForm,\
                               TagForm as CompTagForm, DescriptionForm as CompDescr, StaffForm as CompStaff, \
                               FoundationForm as CompFound, SpecializationForm as CompSpec, AddressForm as CompAddress

class ProfileCompanyView(TemplateView):
    """
    display template with user company information forms
    in template forms handles dynamically by ajax
    """
    template_name = 'accounts/fill_company.html'

    def get_context_data(self, **kwargs):
        context = super(ProfileCompanyView, self).get_context_data(**kwargs)
        user = self.request.user

        if not user.company:
            raise Http404
        company = user.company
        forms = {
            'home_form': CompHomeForm(instance=company), 'phone_form': CompPhoneForm(instance=company),
            'email_form': CompEmailForm(instance=company), 'web_page_form': CompWebPageForm(instance=company),
            'social_form': CompSocialForm(instance=company), 'tag_form': CompTagForm(instance=company),
            'staff_form': CompStaff(instance=company), 'found_form': CompFound(instance=company)
        }

        lang = get_language()
        comp_transl = company.translations.get(language_code=lang)
        transl_forms = {
            'name_form': CompNameForm(instance=comp_transl), 'spec_form': CompSpec(instance=comp_transl),
            'description_form': CompDescr(instance=comp_transl), 'address_form': CompAddress(instance=comp_transl)
        }

        context.update(forms)
        context.update(transl_forms)

        return context






class UserView(TemplateView):
    """
    display user information for another users
    """
    template_name = 'accounts/user.html'

    def get_context_data(self, **kwargs):
        context = super(UserView, self).get_context_data(**kwargs)
        url = self.kwargs.get('url')
        try:
            url = int(url)
            user = get_object_or_404(User, id=url)
        except ValueError:
            user = get_object_or_404(User, url=url)

        if user == self.request.user:
            profile = user.profile
            profile_forms = {
                'avatar_form': AvatarForm(instance=profile), 'name_form': NameForm(instance=user),
                'home_form': HomeForm(instance=profile), 'work_form': WorkForm(instance=user),
                'about_company_form': AboutCompanyForm(instance=profile), 'phone_form': PhoneForm(instance=profile),
                'email_form': EmailForm(instance=user), 'web_page_form': WebPageForm(instance=profile),
                'social_form': SocialForm(instance=profile), 'about_form': AboutForm(instance=profile),
                'company_form': CreateCompanyForm()
            }

            context.update(profile_forms)



        context['message_form'] = SendForm()
        context['member'] = user
        return context


class ProfileInvalidView(FormView):
    """
    abstract view. handles form errors. return errors in json
    """
    def form_invalid(self, form):
        response = {'success': False}
        response.update({'errors': form.errors})
        return HttpResponse(json.dumps(response), content_type='application/json')


class BaseProfileView(ProfileInvalidView):
    """
    abstract view for ajax calls. handles form with instance profile
    return json
    """
    def form_valid(self, form):
        profile = self.request.user.profile
        form = self.form_class(self.request.POST, instance=profile)
        profile = form.save()
        response = {'success': True, 'rating': profile.user.rating}
        return HttpResponse(json.dumps(response), content_type='application/json')

class WorkView(ProfileInvalidView):
    """
    instance user
    """
    form_class = WorkForm

    def form_valid(self, form):
        user = self.request.user
        form = self.form_class(self.request.POST, instance=user)
        user = form.save()
        #company = user.company

        #response = {'success': True, 'url':company.get_permanent_url()}
        response = {'success': True, 'rating': user.rating}

        return HttpResponse(json.dumps(response), content_type='application/json')

class AvatarView(BaseProfileView):
    """
    instance profile. save user avatar.

    if call is ajax- return json data, else redirect to profile page
    """
    form_class = AvatarForm

    def form_valid(self, form):
        profile = self.request.user.profile
        form = self.form_class(self.request.POST, self.request.FILES, instance=profile)
        profile = form.save()
        if self.request.is_ajax():
            im = get_thumbnail(profile.avatar, '100x100')
            response = {'success': True, 'url': im.url, 'rating': profile.user.rating}
            return HttpResponse(json.dumps(response), content_type='application/json')
        else:
            return HttpResponseRedirect('/profile/')


class HomeView(BaseProfileView):
    """
    instance profile
    """
    form_class = HomeForm


class AboutCompanyView(BaseProfileView):
    """
    instance profile
    """
    form_class = AboutCompanyForm


class PhoneView(BaseProfileView):
    """
    instance profile
    """
    form_class = PhoneForm


class WebPageView(BaseProfileView):
    """
    instance profile
    """
    form_class = WebPageForm


class SocialView(BaseProfileView):
    """
    instance profile
    """
    form_class = SocialForm


class AboutView(BaseProfileView):
    """
    instance profile
    """
    form_class = AboutForm

class NameView(ProfileInvalidView):
    """
    instance user
    """
    form_class = NameForm

    def form_valid(self, form):
        user = self.request.user
        form = self.form_class(self.request.POST, instance=user)
        user = form.save()
        response = {'success': True, 'rating': user.rating}

        return HttpResponse(json.dumps(response), content_type='application/json')

from exposition.models import Exposition


def get_user(url):
    try:
        url = int(url)
        user = get_object_or_404(User, id=url)
    except ValueError:
        user = get_object_or_404(User, url=url)
    return user

class UserEventView(ListView):
    model = Exposition
    template_name = 'accounts/user_events.html'
    paginate_by = 10
    obj = None
    event_type = None


    def get_queryset(self):
        url = self.kwargs.get('url')
        user = get_user(url)
        self.obj = user
        return user.exposition_users.language().select_related('country').all()

    def get_context_data(self, **kwargs):
        context = super(UserEventView, self).get_context_data(**kwargs)
        context['u'] = self.obj
        context['event_type'] = self.event_type
        return context

class UserExpositionsView(UserEventView):
    """
    return template with list of expos that user joined
    """
    event_type = _(u'Выставки')

    def get_queryset(self):
        url = self.kwargs.get('url')
        user = get_user(url)
        self.obj = user
        return user.get_expos()


class UserConferenceView(UserEventView):
    """
    return template with list of confs that user joined
    """
    event_type = _(u'Конференции')

    def get_queryset(self):
        url = self.kwargs.get('url')
        user = get_user(url)
        self.obj = user
        return user.get_confs()

class UserSeminarView(UserEventView):
    """
    return template with list of seminars that user joined
    """
    event_type = _(u'Семинары')

    def get_queryset(self):
        url = self.kwargs.get('url')
        user = get_user(url)
        self.obj = user
        return user.get_seminars()

@login_required
def change_password(request):
    """
    Change current user password if new password is valid
    """
    success = {'success': False}
    if request.POST:
        form = ChangePasswordForm(request.POST)
        if form.is_valid():
            user = request.user
            if(user.check_password(form.cleaned_data.get('old_password'))):
                user.set_password(form.cleaned_data.get('new_password'))
                user.save()
                success['success'] = True
                success['message'] = _(u'Пароль изменен')
                return HttpResponse(json.dumps(success), content_type='application/json')
            else:
                errors = {'errors': [_(u'Не правильный пароль')]}
                success.update(errors)
                return HttpResponse(json.dumps(success), content_type='application/json')
        else:
            errors = [err[0] for err in form.errors.values()]
            errors = {'errors': errors}
            success.update(errors)
            return HttpResponse(json.dumps(success), content_type='application/json')
    else:
        return HttpResponse(json.dumps(success), content_type='application/json')

from django.views.generic.edit import FormMixin
class Feed(ListView):
    template_name = 'client/accounts/feed.html'
    paginate_by = 10
    model = Exposition
    filter_form = FeedFilterForm
    success_url = '/profile/feed/'

    def post(self, request):
        user = self.request.user
        form = self.filter_form(request.POST, user=user)
        if form.is_valid():
            form.filter_save()
            return HttpResponseRedirect(self.success_url)


    def get_queryset(self):
        filter = self.request.user.eventfilter
        qs = filter.get_queryset()

        return qs

    def get_context_data(self, **kwargs):
        context = super(Feed, self).get_context_data(**kwargs)
        user = self.request.user
        filter_form = self.filter_form(user=user)
        context['filter_form'] = filter_form
        return context


@login_required
def remove_from_calendar(request):
    if request.GET:
        expo = request.GET.get('expo')
        conf = request.GET.get('conf')
        seminar = request.GET.get('seminar')
        webinar = request.GET.get('webinar')

        data = {'expo': expo if expo is None else json.loads(expo),
                'conf': conf if conf is None else json.loads(conf),
                'seminar': seminar if seminar is None else json.loads(seminar),
                'webinar': webinar if webinar is None else json.loads(webinar)}
        user = request.user
        user.remove_from_calendar(data)

        return HttpResponse(json.dumps({'success': True}), content_type='application/json')
    else:
        return Http404