from django.conf import settings
from django.contrib import messages
from django.contrib.auth.mixins import PermissionRequiredMixin, LoginRequiredMixin
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.core.urlresolvers import reverse, reverse_lazy
from django.core.files.base import ContentFile
from django.db.models import Q
from django.http import HttpResponseForbidden, HttpResponseRedirect, HttpResponse, Http404
from django.shortcuts import render, get_object_or_404, redirect
from django.views.generic import ListView, DetailView, CreateView, View, UpdateView, TemplateView, FormView
from django.views.generic.base import ContextMixin
from pprint import pprint, pformat
import json
import pydash as _; _.map = _.map_; _.filter = _.filter_
import re

from .mixins import LastAccessMixin
from .models import Project, ProjectFile, Portfolio, PortfolioPhoto,Candidate, Answer, AnswerFile, Realty, Order
from archilance.mixins import BaseMixin
from users.models import User, Team
from work_sell.models import Picture

from .forms import (
    ContractorPortfolioTrashForm,
    ProjectAnswerForm,
    CustomerProjectDeleteForm,
    CustomerProjectEditForm,
    CustomerProjectEditForm,
    CustomerProjectRestoreForm,
    CustomerProjectTrashForm,
    PortfolioForm,
    ProjectFilterForm,
    ProjectFilterRealtyForm,
    RealtyForm,
)


class ProjectDetailWithContractorAnswerView(BaseMixin, View):
    form_class = ProjectAnswerForm
    template_name = 'project_detail.html'
    
    def get(self, request, *args, **kwargs):
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        
        project = get_object_or_404(Project, pk=kwargs.get('pk'))
        context.update({'project': project})
        
        if request.user.is_authenticated() and request.user.is_contractor():
            project_answers = project.answers.all()
            got_answer = None
            contractor = request.user
            answer = contractor.contractor_answers.first()
            
            if answer and answer in project_answers:
                got_answer = True
            else:
                team = None
                answer = None
                
                try: team = contractor.team
                except Team.DoesNotExist: pass
                
                if team:
                    answer = team.answers.first()
                
                if answer and answer in project_answers:
                    got_answer = True
            
            if got_answer:
                context.update({'answer': answer})
            else:
                if request.GET.get('answer_as_team') == 'on': # TODO: Check for actual possibility to answer as a team
                    context.update({'answer_as_team': True})
                    form = self.form_class(request=request, answer_as_team=True)
                else:
                    form = self.form_class(request=request)
                
                context.update({'form': form})
        
        return render(request, self.template_name, context)
    
    def post(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_contractor():
            context = self.get_context_data(**kwargs)
            answer_as_team = None
            
            if request.POST.get('answer_as_team') == 'on': # TODO: Check for actual possibility to answer as a team
                answer_as_team = True
            
            if answer_as_team:
                form = self.form_class(request.POST, request=request, answer_as_team=True)
            else:
                form = self.form_class(request.POST, request=request)
            
            project = get_object_or_404(Project, pk=kwargs.get('pk'))
            context.update({'project': project})
            
            if form.is_valid():
                answer = form.save(commit=False)
                answer.project = project
                answer.author = request.user.team if answer_as_team else request.user
                answer.save()
                form.save_m2m()
                
                for file in request.FILES.getlist('new_files'):
                    if len(file.name) <= 255:
                        AnswerFile.objects.create(file=file, name=file.name, answer=answer)
                
                messages.info(request, 'Отклик успешно размещён')
                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)
        else:
            return HttpResponseForbidden('403 Forbidden')


class ProjectFilterView(BaseMixin, View):
    template_name = 'project_filter.html'
    form_class = ProjectFilterForm
    realty_form = ProjectFilterRealtyForm
    
    def get(self, request, *args, **kwargs):
        form = self.form_class(request.GET, request=request)
        realty_form = self.realty_form(request.GET, request=request, prefix='realty_form')
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        
        projects = Project.objects
        
        if form.is_valid() and realty_form.is_valid():
            ord = None
            
            keywords = form.cleaned_data.get('keywords')
            cro = form.cleaned_data.get('cro')
            work_type = form.cleaned_data.get('work_type')
            specialization = form.cleaned_data.get('specialization')
            
            building_classification = realty_form.cleaned_data.get('building_classification')
            construction_type = realty_form.cleaned_data.get('construction_type')
            location = realty_form.cleaned_data.get('location')
            
            if keywords:
                keywords = tuple(filter(None, re.split(r'\s|,|;', keywords)))
                
                for k in keywords:
                    projects = projects.filter(Q(name__icontains=k) | Q(text__icontains=k))
            
            projects = projects.filter(cro=cro)
            
            if work_type:
                projects = projects.filter(work_type=work_type)
            
            if specialization:
                projects = projects.filter(
                    specialization__lft__gte=specialization.lft,
                    specialization__rght__lte=specialization.rght,
                )
            
            if building_classification:
                projects = projects.filter(realty__building_classification=building_classification)
            
            if construction_type:
                projects = projects.filter(realty__construction_type=construction_type)
            
            if location:
                projects = projects.filter(
                    realty__location__lft__gte=location.lft,
                    realty__location__rght__lte=location.rght,
                )
            
            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:
                projects = projects.order_by('-%s' % ord if reverse_order else ord)
            
            context.update({
                'last_order_by': last_order_by,
                'reverse_order': reverse_order,
            })
            
            project_count = projects.count()
            display_msg = 'Найдено %s проектов' % project_count if project_count > 0 else 'Ничего не найдено'
        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)))
            
            if realty_form and realty_form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (realty_form)</p>'
                    '<pre>{realty_form}</pre>'
                ).format(realty_form=pformat(realty_form.errors)))
        
        # import code; code.interact(local=dict(globals(), **locals()))
        paginator = Paginator(projects.all(), 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,
            'realty_form': realty_form,
            'projects': projects,
            'is_paginated': True,
            'page_obj': projects,
            'display_msg': display_msg,
        })
        
        return render(request, self.template_name, context)


class CustomerProjectCreateView(BaseMixin, View):
    form_class = CustomerProjectEditForm
    realty_form = RealtyForm
    template_name = 'customer_project_create.html'
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_customer():
            return super().dispatch(request, *args, **kwargs)
        else:
            return HttpResponseForbidden('403 Forbidden')
    
    def get(self, request, *args, **kwargs):
        form = self.form_class(request=request)
        realty_form = self.realty_form(request=request, prefix='realty_form')
        
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        context.update({'form': form, 'realty_form': realty_form})
        
        return render(request, self.template_name, context)
    
    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST, request=request) # Passing `request.FILES` seems unnecessary here. Files are added manually below
        
        form.is_valid()
        realty = form.cleaned_data.get('realty')
        
        if realty:
            realty_form = self.realty_form(request.POST, instance=realty, request=request, prefix='realty_form')
        else:
            realty_form = self.realty_form(request.POST, request=request, prefix='realty_form')
        
        if form.is_valid() and realty_form.is_valid():
            project = form.save(commit=False)
            project.customer = request.user
            project.save()
            form.save_m2m()
            
            Order.objects.create(project=project)
            
            for file in request.FILES.getlist('new_files'):
                ProjectFile.objects.create(file=file, project=project)
            
            if realty:
                realty_form.save()
            else:
                realty = realty_form.save(commit=False)
                realty.user = request.user
                realty.save()
                realty_form.save_m2m()
                
                project.realty = realty # Connect a realty with a project
                project.save()
            
            messages.info(request, 'Проект успешно создан')
            redirect_to = reverse('projects:detail', kwargs={'pk': project.pk})
            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 realty_form and realty_form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (realty_form)</p>'
                    '<pre>{realty_form}</pre>'
                ).format(realty_form=pformat(realty_form.errors)))
            
            context = self.get_context_data(**kwargs)
            context.update({'form': form, 'realty_form': realty_form})
            return render(request, self.template_name, context)


class CustomerProjectEditView(BaseMixin, View):
    form_class = CustomerProjectEditForm
    realty_form = RealtyForm
    template_name = 'customer_project_edit.html'
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_customer():
            return super().dispatch(request, *args, **kwargs)
        else:
            return HttpResponseForbidden('403 Forbidden')
    
    def get(self, request, *args, **kwargs):
        project = get_object_or_404(request.user.projects, pk=kwargs.get('pk'))
        form = self.form_class(instance=project, request=request)
        
        realty = project.realty
        
        if realty:
            realty_form = self.realty_form(instance=project.realty, request=request, prefix='realty_form')
        else:
            realty_form = self.realty_form(request=request, prefix='realty_form')
        
        context = self.get_context_data(**_.merge({}, request.GET, kwargs))
        context.update({'form': form, 'realty_form': realty_form})
        
        return render(request, self.template_name, context)
    
    def post(self, request, *args, **kwargs):
        project = get_object_or_404(request.user.projects, pk=kwargs.get('pk'))
        form = self.form_class(request.POST, request.FILES, request=request, instance=project)
        
        form.is_valid()
        realty = form.cleaned_data.get('realty')
        
        if realty:
            realty_form = self.realty_form(request.POST, instance=realty, request=request, prefix='realty_form')
        else:
            realty_form = self.realty_form(request.POST, request=request, prefix='realty_form')
        
        if form.is_valid() and realty_form.is_valid():
            project = form.save(commit=False)
            project.customer = request.user
            project.files = form.cleaned_data.get('files') # TODO: Should we somehow get rid of this explicit assignment?
            project.save()
            form.save_m2m()
            
            for file in request.FILES.getlist('new_files'):
                proj_file = ProjectFile.objects.create(file=file, project=project)
                proj_file.save()
            
            if realty:
                realty_form.save()
            else:
                realty = realty_form.save(commit=False)
                realty.user = request.user
                realty.save()
                realty_form.save_m2m()
                
                project.realty = realty # Connect a realty with a project
                project.save()
            
            messages.info(request, 'Проект 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)))
            
            if realty_form and realty_form.errors:
                messages.info(request, (
                    '<p>Произошла ошибка (realty_form)</p>'
                    '<pre>{realty_form}</pre>'
                ).format(realty_form=pformat(realty_form.errors)))
            
            context = self.get_context_data(**kwargs)
            context.update({'form': form, 'realty_form': realty_form})
            return render(request, self.template_name, context)


class ContractorPortfolioTrashView(View):
    form_class = ContractorPortfolioTrashForm

    def post(self,request, *args, **kwargs):
        form = self.form_class(_.merge({}, request.POST, kwargs), request=request)
        if form.is_valid():
            portfolio = form.cleaned_data.get('pk')
            portfolio.delete()
            messages.info(request, 'Портфолио удален')
        else:
            messages.info(request, 'Произошла ошибка: <pre>{msg}</pre>'.format(msg=pformat(form.errors)))

        redirect_to = request.POST.get('next')
        return redirect(redirect_to)

class CustomerProjectTrashView(View):
    form_class = CustomerProjectTrashForm
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_customer():
            return super().dispatch(request, *args, **kwargs)
        else:
            return HttpResponseForbidden('403 Forbidden')
    
    def post(self, req, *args, **kwargs):
        form = self.form_class(_.merge({}, req.POST, kwargs), req=req)
        
        if form.is_valid():
            project = form.cleaned_data.get('pk')
            project.state = 'trashed'
            project.save()
            
            messages.info(req, 'Проект перемещён в корзину')
        else:
            messages.info(req, 'Произошла ошибка: <pre>{msg}</pre>'.format(msg=pformat(form.errors)))
        
        redirect_to = req.POST.get('next')
        return redirect(redirect_to)


class CustomerProjectRestoreView(View):
    form_class = CustomerProjectRestoreForm
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_customer():
            return super().dispatch(request, *args, **kwargs)
        else:
            return HttpResponseForbidden('403 Forbidden')
    
    def post(self, req, *args, **kwargs):
        form = self.form_class(_.merge({}, req.POST, kwargs), req=req)
        
        if form.is_valid():
            project = form.cleaned_data.get('pk')
            project.state = 'active'
            project.save()

            messages.info(req, 'Проект восстановлен из корзины')
        else:
            messages.info(req, 'Произошла ошибка: <pre>{msg}</pre>'.format(msg=pformat(form.errors)))
        
        redirect_to = req.POST.get('next')
        return redirect(redirect_to)


class CustomerProjectDeleteView(View):
    form_class = CustomerProjectDeleteForm
    
    def dispatch(self, request, *args, **kwargs):
        if request.user.is_authenticated() and request.user.is_customer():
            return super().dispatch(request, *args, **kwargs)
        else:
            return HttpResponseForbidden('403 Forbidden')
    
    def post(self, req, *args, **kwargs):
        form = self.form_class(_.merge({}, req.POST, kwargs), req=req)
        
        if form.is_valid():
            project = form.cleaned_data.get('pk')
            project.state = 'deleted'
            project.save()
            messages.info(req, 'Проект удалён навсегда')
        else:
            messages.info(req, 'Произошла ошибка: <pre>{msg}</pre>'.format(msg=pformat(form.errors)))
        
        redirect_to = req.POST.get('next')
        return redirect(redirect_to)


class ProjectComparisonView(DetailView):
    model = Project
    template_name = 'comparison.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data()
        return context


def add_candidate(request, answer_id, project_id):
    answer = Answer.objects.get(pk=answer_id)
    project = Project.objects.get(pk=project_id)
    candidate = Candidate.objects.create(answer=answer, project=project)
    return HttpResponseRedirect(reverse('projects:detail',args=[project_id]))


class OfferOrderView(View):
    template_name = 'chattest.html'

    def get(self, request, *args, **kwargs):
        return render(request, self.template_name)


def contractor_portfolio_create(request):
    if request.is_ajax():
        form = PortfolioForm(data=request.POST)
        # import code; code.interact(local=dict(globals(), **locals()))
        if form.is_valid():
            instance = form.save(commit=False)
            instance.save()
            images_ids = request.POST.get('images-ids').split(';')[:-1]
            for pk in images_ids:
                picture = Picture.objects.get(pk=pk)
                temp_file = ContentFile(picture.file.read())
                temp_file.name = picture.file.name
                p_photo = PortfolioPhoto()
                p_photo.img = temp_file
                p_photo.portfolio = instance
                p_photo.save()
            data = {'status': 'ok'}
        else:
            data = {'status': 'no', 'form_errors': form.errors}
        return HttpResponse(json.dumps(data), content_type='application/json')
    else:
        raise Http404


class ContractorPortfolioUpdateView(UpdateView):
    model = Portfolio
    form_class = PortfolioForm
    template_name = 'contractor_portfolio_edit.html'

    def get_success_url(self):
        return reverse('proje')


from django.views.generic import DeleteView
class PortfolioDelete(DeleteView):
    model = Portfolio
    success_url = reverse_lazy('users:contractor-profile')


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