from django.conf import settings
from django.contrib import messages
from django.core.exceptions import PermissionDenied
from django.core.files.base import ContentFile
from django.core.mail import send_mail
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.core.urlresolvers import reverse
from django.db.models import Q
from django.http import HttpResponse, HttpResponseForbidden, JsonResponse, Http404
from django.shortcuts import render, get_object_or_404, redirect
from django.views.generic import ListView, DetailView, View, UpdateView, CreateView
from pprint import pprint, pformat
import itertools
import json
import natsort
import pydash as _; _.map = _.map_; _.filter = _.filter_

from .mixins import CheckForUserMixin
from .models import User, Team, UserFinancialInfo, ContractorResume, ContractorResumeFiles
from .forms import TeamForm, ContractorResumeFilesForm, ContractorResumeForm
from archilance import util
from archilance.mixins import BaseMixin
from projects.forms import PortfolioForm
from projects.models import Project, Portfolio
from reviews.models import Review
from specializations.models import Specialization
from work_sell.forms import WorkSellForm
from work_sell.models import WorkSell, Picture

from .forms import (
    ContractorFilterForm,
    CustomerProfileProjectRealtyForm,
    UserFinancialInfoEditForm,
    UserProfileBasicInfoEditForm,
    UserProfileEditForm,
)


class UserProfileEditView(BaseMixin, View):
    form_class = UserProfileEditForm
    template_name = 'user_profile_edit.html'
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.pk == int(kwargs.get('pk')):
            return super().dispatch(request, *args, **kwargs)
        else:
            raise PermissionDenied
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        
        form = self.form_class(request=request, instance=request.user)
        context.update({'form': form})
        
        return render(request, self.template_name, context)
    
    def post(self, request, *args, **kwargs):
        context = self.get_context_data(**kwargs)
        
        specs = request.POST.getlist('contractor_specializations')
        request.POST.setlist('contractor_specializations', _.compact(specs)) # Ignore empty input values
        
        form = self.form_class(request.POST, request.FILES, request=request, instance=request.user)
        
        if form.is_valid():
            form.save()
            
            messages.info(request, 'Пользователь успешно отредактирован')
            redirect_to = request.POST.get('next')
            return redirect(redirect_to)
        else:
            if form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(form.errors)))
            
            context.update({'form': form})
            return render(request, self.template_name, context)


class UserFinancialInfoEditView(BaseMixin, View):
    form_class = UserProfileBasicInfoEditForm
    fin_info_form_class = UserFinancialInfoEditForm
    template_name = 'user_financial_info_edit.html'
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.pk == int(kwargs.get('pk')):
            return super().dispatch(request, *args, **kwargs)
        else:
            raise PermissionDenied
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        
        form = self.form_class(request=request, instance=request.user)
        fin_info_form = self.fin_info_form_class(request=request, instance=request.user.financial_info, prefix='fin_info')
        
        context.update({
            'form': form,
            'fin_info_form': fin_info_form,
        })
        
        return render(request, self.template_name, context)
    
    def post(self, request, *args, **kwargs):
        context = self.get_context_data(**kwargs)
        
        specs = request.POST.getlist('contractor_specializations')
        request.POST.setlist('contractor_specializations', _.compact(specs)) # Ignore empty input values
        
        form = self.form_class(request.POST, request.FILES, request=request, instance=request.user)
        fin_info_form = self.fin_info_form_class(request.POST, request.FILES, request=request, instance=request.user.financial_info, prefix='fin_info')
        
        if form.is_valid() and fin_info_form.is_valid():
            user = form.save()
            fin_info = fin_info_form.save()
            
            user.financial_info = fin_info
            user.save()
            
            messages.info(request, 'Финансовая информация успешно отредактирована')
            redirect_to = request.POST.get('next')
            return redirect(redirect_to)
        else:
            if form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(form.errors)))
            
            if fin_info_form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (fin_info_form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(fin_info_form.errors)))
            
            context.update({
                'form': form,
                'fin_info_form': fin_info_form,
            })
            
            return render(request, self.template_name, context)


class ContractorFilterView(BaseMixin, View):
    template_name = 'contractor_filter.html'
    form_class = ContractorFilterForm
    
    def get(self, request, *args, **kwargs):
        form = self.form_class(request.GET, request=request)
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        coll = []
        
        if form.is_valid():
            contractors = teams = None
            contr_count = team_count = None
            get_contractors = get_teams = None
            ord = None
            
            cro = form.cleaned_data.get('cro')
            specialization = form.cleaned_data.get('specialization')
            location = form.cleaned_data.get('location')
            work_type = form.cleaned_data.get('work_type')
            build_classif = form.cleaned_data.get('building_classification')
            constr_type = form.cleaned_data.get('construction_type')
            
            
            party_types = form.cleaned_data.get('party_types')
            last_party_types = form.cleaned_data.get('last_party_types')
            
            if party_types == 'all':
                get_contractors = get_teams = True
            elif party_types == 'contractors':
                get_contractors = True
            elif party_types == 'teams':
                get_teams = True
            elif not party_types:
                if last_party_types == 'contractors':
                    get_contractors = True
                elif last_party_types == 'teams':
                    get_teams = True
                else:
                    get_contractors = get_teams = True
            
            if party_types:
                last_party_types = party_types
            
            context.update({'last_party_types': last_party_types})
            
            if get_contractors:
                contractors = User.contractor_objects.all()
                
                if cro:
                    contractors = contractors.filter(cro=cro)
                
                if specialization:
                    contractors = contractors.filter(
                        contractor_specializations__lft__gte=specialization.lft,
                        contractor_specializations__rght__lte=specialization.rght,
                    )
                
                if location:
                    contractors = contractors.filter(
                        location__lft__gte=location.lft,
                        location__rght__lte=location.rght,
                    )
                
                if work_type:
                    contractors = contractors.filter(orders__project__work_type=work_type)
                
                if build_classif:
                    contractors = contractors.filter(orders__project__realty__building_classification=build_classif)
                
                if constr_type:
                    contractors = contractors.filter(orders__project__realty__construction_type=constr_type)

            if get_teams:
                teams = Team.objects.all()
                
                if cro:
                    teams = teams.filter(Q(contractors__cro=cro) | Q(owner__cro=cro))

                if specialization:
                    teams = teams.filter(
                        (
                            Q(contractors__contractor_specializations__lft__gte=specialization.lft)
                            & Q(contractors__contractor_specializations__rght__lte=specialization.rght)
                        ) | (
                            Q(owner__contractor_specializations__lft__gte=specialization.lft)
                            & Q(owner__contractor_specializations__rght__lte=specialization.rght)
                        ),
                    )
                
                if location:
                    teams = teams.filter(
                        (
                            Q(contractors__location__lft__gte=location.lft)
                            & Q(contractors__location__rght__lte=location.rght)
                        ) | (
                            Q(owner__location__lft__gte=location.lft)
                            & Q(owner__location__rght__lte=location.rght)
                        ),
                    )
                
                if work_type:
                    teams = teams.filter(
                        Q(contractors__orders__project__work_type=work_type)
                        | Q(owner__orders__project__work_type=work_type),
                    )
                
                if build_classif:
                    teams = teams.filter(
                        Q(contractors__orders__project__realty__building_classification=build_classif)
                        | Q(owner__orders__project__realty__building_classification=build_classif),
                    )
                
                if constr_type:
                    teams = teams.filter(
                        Q(contractors__orders__project__realty__construction_type=constr_type)
                        | Q(owner__orders__project__realty__construction_type=constr_type),
                    )
            
            if get_contractors and get_teams:
                coll = tuple(itertools.chain(contractors.distinct(), teams.distinct()))
                count = len(coll)
                display_msg = 'Найдено %s элементов' % count if count > 0 else 'Ничего не найдено'
            elif get_contractors:
                coll = contractors.distinct()
                count = coll.count()
                display_msg = 'Найдено %s исполнителей' % count if count > 0 else 'Ничего не найдено'
            elif get_teams:
                coll = teams.distinct()
                count = coll.count()
                display_msg = 'Найдено %s групп' % count if count > 0 else 'Ничего не найдено'
            
            order_by = form.cleaned_data.get('order_by')
            last_order_by = form.cleaned_data.get('last_order_by')
            reverse_order = form.cleaned_data.get('reverse_order')
            
            if order_by:
                reverse_order = not reverse_order if order_by == last_order_by else False
                ord = order_by
                last_order_by = ord
            elif last_order_by:
                ord = last_order_by
            
            if ord:
                if ord == 'name':
                    coll = natsort.natsorted(coll, key=lambda obj: getattr(obj, 'username', None) or obj.name, reverse=reverse_order)
                elif ord =='created':
                    coll = natsort.natsorted(coll, key=lambda obj: obj.created, reverse=reverse_order)
            
            context.update({
                'last_order_by': last_order_by,
                'reverse_order': reverse_order,
            })
        else:
            display_msg = 'Пожалуйста, введите корректные данные'
            
            if form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(form.errors)))
        
        paginator = Paginator(coll, settings.PAGE_SIZE)
        page = request.GET.get('page')
        
        try:
            coll = paginator.page(page)
        except PageNotAnInteger:
            coll = paginator.page(1)
        except EmptyPage:
            coll = paginator.page(paginator.num_pages)
        
        context.update({
            'form': form,
            'coll': coll,
            'is_paginated': True,
            'page_obj': coll,
            'display_msg': display_msg,
        })
        
        return render(request, self.template_name, context)


class ContractorProfileDetailView(DetailView):
    model = User
    worksell_form_class = WorkSellForm
    portfolio_form_class = PortfolioForm
    template_name = 'contractor_profile.html'
    context_object_name = 'contractor'
    queryset = User.contractor_objects
    
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        
        context['worksell_form'] = self.worksell_form_class
        context['portfolio_form'] = self.portfolio_form_class
        
        resume = self.object.contractor_resume
        
        if resume:
            context['resume_diploms'] = resume.resume_files.filter(type='diplom')
            context['resume_cro'] = resume.resume_files.filter(type='cro')
        else:
            resume = ContractorResume()
            resume.save()
            self.object.contractor_resume = resume
            self.object.save()
        
        return context


class ContractorOfficeView(DetailView):
    model = User
    template_name = 'contractor_office.html'
    context_object_name = 'contractor'
    form_class = TeamForm
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_contractor() and request.user.pk == int(kwargs.get('pk')):
            return super().dispatch(request, *args, **kwargs)
        else:
            raise PermissionDenied
    
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        
        contractor = self.object
        
        if util.get_related_or_none(contractor, 'team'):
            members = contractor.team.contractors.all()
            context['team_members'] = members
            context['team_member_count'] = len(members)
            
            compl_proj = []
            # portfolios = [] # Fetched via DRF
            # work_sells = [] # Fetched via DRF
            
            compl_proj.extend(tuple(o.project for o in contractor.orders.filter(status='completed')))
            # portfolios.extend(contractor.portfolios.all())
            # work_sells.extend(contractor.work_sell.all())
            
            for c in members:
                compl_proj.extend(tuple(o.project for o in c.orders.filter(status='completed')))
                # portfolios.extend(c.portfolios.all())
                # work_sells.extend(c.work_sell.all())
            
            context['completed_project_count'] = len(compl_proj)
            # context['portfolios'] = portfolios
            # context['work_sells'] = work_sells
            
            context['reviews'] = Review.objects.filter(target_contractor__in=itertools.chain((contractor,), members))
        
        context['form_team'] = self.form_class
        
        return context


class ContractorOfficeProjectsView(BaseMixin, View):
    template_name = 'contractor_office_open_projects.html'
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_contractor() and request.user.pk == int(kwargs.get('pk')):
            return super().dispatch(request, *args, **kwargs)
        else:
            raise PermissionDenied
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**kwargs)
        
        contractor = get_object_or_404(User.contractor_objects, pk=kwargs.get('pk'))
        context['contractor'] = contractor
        
        private_open_projects = tuple(a.project for a in contractor.contractor_answers.filter(project__state='active', rejected=False))
        private_archived_projects = tuple(a.project for a in contractor.contractor_answers.filter(project__state='active', rejected=True))

        try:
            team_open_projects = tuple(a.project for a in contractor.team.answers.filter(project__state='active', rejected=False))
            team_archived_projects = tuple(a.project for a in contractor.team.answers.filter(project__state='active', rejected=True))
        except:
            team_open_projects = ()
            team_archived_projects = ()
        
        context['all_project_count'] = \
            len(private_open_projects) + len(private_archived_projects) + \
            len(team_open_projects) + len(team_archived_projects)
        
        context['open_project_count'] = len(private_open_projects) + len(team_open_projects)
        context['archived_project_count'] = len(private_archived_projects) + len(team_archived_projects)
        
        if request.GET.get('owner') == 'private':
            if request.GET.get('archived') == 'on':
                projects = private_archived_projects
            else:
                projects = private_open_projects
        elif request.GET.get('owner') == 'teams':
            if request.GET.get('archived') == 'on':
                projects = team_archived_projects
            else:
                projects = team_open_projects
        else:
            if request.GET.get('archived') == 'on':
                projects = itertools.chain(private_archived_projects, team_archived_projects)
            else:
                projects = itertools.chain(private_open_projects, team_open_projects)
        
        context['projects'] = projects
        
        return render(request, self.template_name, context)


class CustomerProfileOpenProjectsView(BaseMixin, View):
    template_name = 'customer_profile_open_projects.html'
    form_class = CustomerProfileProjectRealtyForm
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        customer = get_object_or_404(User.customer_objects, pk=kwargs.get('pk'))
        form = self.form_class(request.GET, request=request, customer=customer)
        projects = customer.projects.filter(state='active')
        trashed_projects = customer.projects.filter(state='trashed')
        
        if form.is_valid():
            realty = form.cleaned_data.get('realty')
            
            if realty:
                projects = projects.filter(realty=realty)
                trashed_projects = trashed_projects.filter(realty=realty)
        else:
            if form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(form.errors)))
        
        paginator = Paginator(projects, settings.PAGE_SIZE)
        page = request.GET.get('page')
        
        try:
            projects = paginator.page(page)
        except PageNotAnInteger:
            projects = paginator.page(1)
        except EmptyPage:
            projects = paginator.page(paginator.num_pages)
        
        context.update({
            'form': form,
            
            'projects': projects,
            'customer': customer,
            
            'open_project_count': projects.paginator.count,
            'trashed_project_count': trashed_projects.count(),
            
            'is_paginated': True,
            'page_obj': projects,
        })
        
        return render(request, self.template_name, context)


class CustomerProfileTrashedProjectsView(BaseMixin, View):
    template_name = 'customer_profile_trashed_projects.html'
    form_class = CustomerProfileProjectRealtyForm
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        customer = get_object_or_404(User.customer_objects, pk=kwargs.get('pk'))
        form = self.form_class(request.GET, request=request, customer=customer)
        projects = customer.projects.filter(state='trashed')
        open_projects = customer.projects.filter(state='active')
        
        if form.is_valid():
            realty = form.cleaned_data.get('realty')
            
            if realty:
                projects = projects.filter(realty=realty)
                open_projects = open_projects.filter(realty=realty)
        else:
            if form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (form)</p>'
                    '<pre>{form}</pre>'
                ).format(form=pformat(form.errors)))
        
        paginator = Paginator(projects, settings.PAGE_SIZE)
        page = request.GET.get('page')
        
        try:
            projects = paginator.page(page)
        except PageNotAnInteger:
            projects = paginator.page(1)
        except EmptyPage:
            projects = paginator.page(paginator.num_pages)
        
        context.update({
            'form': form,
            
            'projects': projects,
            'customer': customer,
            
            'open_project_count': open_projects.count(),
            'trashed_project_count': projects.paginator.count,
            
            'is_paginated': True,
            'page_obj': projects,
        })
        
        return render(request, self.template_name, context)


class CustomerProfileCurrentProjectsView(BaseMixin, DetailView):
    model = User
    template_name = 'customer_profile_current_projects.html'
    context_object_name = 'customer'


def join_user_in_team(request):
    pass


class TeamCreateView(View):
    form_class = TeamForm

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)
        # import code; code.interact(local=dict(globals(), **locals()))
        if form.is_valid():
            instance = form.save(commit=False)
            instance.owner = request.user
            instance.save()
            return redirect('users:contractor-office', pk=request.user.pk)


class ContractorResumeUpdateView(UpdateView):
    model = ContractorResume
    form_class = ContractorResumeForm

    def form_valid(self, form):
        if self.request.is_ajax():
            self.object = form.save()
            data = {
                'text': self.object.text,
                'status': 'ok',
            }
            return JsonResponse(data)
        return super().form_valid(form)

    def form_invalid(self, form):
        if self.request.is_ajax():
            return JsonResponse(form.errors, status=400)
        return super().form_invalid(form)


class ContractorResumeFileCreateView(CreateView):
    model = ContractorResumeFiles
    form_class = ContractorResumeFilesForm

    def form_valid(self, request, form):
        if self.request.is_ajax():
            img_id = request.POST.get('img_id')
            picture = Picture.objects.get(pk=img_id)
            temp_file = ContentFile(picture.file.read())
            temp_file.name = picture.file.name
            instance = form.save(commit=False)
            instance.img = temp_file
            instance.save()
            data = {
                'pk': instance.pk,
                'status': 'ok',
            }
            return JsonResponse(data)
        return super().form_valid(form)

    def form_invalid(self, form):
        if self.request.is_ajax():
            return JsonResponse(form.errors, status=400)
        return super().form_invalid(form)


def contractor_resumefile_create(request):
    if request.is_ajax():
        form = ContractorResumeFilesForm(data=request.POST)
        # import code; code.interact(local=dict(globals(), **locals()))
        if form.is_valid():
            # import code; code.interact(local=dict(globals(), **locals()))
            img_id = request.POST.get('img_id')
            picture = Picture.objects.get(pk=img_id)
            temp_file = ContentFile(picture.file.read())
            temp_file.name = picture.file.name
            instance = form.save(commit=False)
            instance.img = temp_file
            instance.save()
            data = {'status': 'ok', 'pk': instance.pk}
        else:
            data = {'status': 'no', 'form_errors': form.errors}
        return HttpResponse(json.dumps(data), content_type='application/json')
    else:
        raise Http404

class CustomerProfileReviewsView(BaseMixin, View):
    template_name = 'customer_profile_reviews.html'
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, self.request.GET, kwargs))
        
        customer = get_object_or_404(User.customer_objects, pk=self.kwargs['pk'])
        reviews = Review.objects.filter(target_customer=customer)
        
        context.update({
            'reviews': reviews,
            'customer': customer,
        })
        
        return render(request, self.template_name, context)


# import code; code.interact(local=dict(globals(), **locals()))