"""
Created on 4 déc. 2012

@author: alzo
"""
import os
import tempfile

from django.views.generic import ListView, TemplateView, DetailView
from django.db.models import F, Sum
from django.http import HttpResponse
from reportlab.pdfgen import canvas

from cms.pdf import PeriodeFormationPdf, ModulePdf, PlanFormationPdf
from cms.models import (Domaine, Processus, Module, Competence, Document, UploadDoc,)


class HomeView(TemplateView):
    template_name = 'cms/index.html'
    
    def get_context_data(self, **kwargs):
        context = super(HomeView, self).get_context_data(**kwargs)
        for d in Domaine.objects.all().order_by('code'):
            context[d.code] = d
        for c in Processus.objects.all().order_by('code'):
            context[c.code] = c
        for m in Module.objects.all().order_by('code'):
            context[m.code] = m
        return context

    
class DomaineDetailView(DetailView): 
    template_name = 'cms/domaine_detail.html'
    model = Domaine 
    

class DomaineListView(ListView): 
    template_name = 'cms/domaine_list.html'
    model = Domaine 
    
    
class ProcessusDetailView(DetailView): 
    template_name = 'cms/processus_detail.html'
    model = Processus
    

class ProcessusListView(ListView): 
    template_name = 'cms/processus_list.html'
    model = Processus 
    
    
class ModuleDetailView(DetailView): 
    template_name = 'cms/module_detail.html'
    model = Module


class ModuleListView(ListView):
    template_name = 'cms/module_list.html'
    model = Module


class EvaluationView(ListView):
    template_name = 'cms/evaluation.html'
    model = Processus


class DocumentListView(ListView): 
    template_name = 'cms/document_list.html'
    model = Document
    
    def get_queryset(self, **kwargs):
        query = Document.objects.filter(published=True)
        return query

    def get_context_data(self, **kwargs):
        context = super(DocumentListView, self).get_context_data(**kwargs) 
        context['upload'] = UploadDoc.objects.filter(published=True)
        return context


class DocumentDetailView(DetailView):
    template_name = 'cms/document_detail.html'
    model = Document
       
    
class UploadDetailView(DetailView):
    """
    Affiche les documents uploadés à la suite des doc.
    DocumentsInline
    """
    template_name = 'cms/upload_detail.html'
    model = UploadDoc
    
    def get_context_data(self, **kwargs):
        context = super(UploadDetailView, self).get_context_data(**kwargs) 
        context['fichier'] = self.get_object().docfile.url
        return context


def print_module_pdf(request, pk):
    filename = 'module.pdf'
    path = os.path.join(tempfile.gettempdir(), filename)
    pdf = ModulePdf(path)
    module = Module.objects.get(pk=pk)
    pdf.produce(module)
    with open(path, mode='rb') as fh:
        response = HttpResponse(fh.read(), content_type='application/pdf')
        response['Content-Disposition'] = 'attachment; filename="EDS_module_{0}.pdf"'.format(module.code)
    return response


def print_plan_formation(request):
    filename = 'plan_formation.pdf'
    path = os.path.join(tempfile.gettempdir(), filename)
    pdf = PlanFormationPdf(path)
    domain = Domaine.objects.all().order_by('code')
    process = Processus.objects.all().order_by('code')
    pdf.produce(domain, process)

    with open(path, mode='rb') as fh:
        response = HttpResponse(fh.read(), content_type='application/pdf')
        response['Content-Disposition'] = 'attachment; filename="EDS_plan_formation.pdf"'
    return response


def print_periode_formation(request):
    filename = 'periode_formation.pdf'
    path = os.path.join(tempfile.gettempdir(), filename)
    pdf = PeriodeFormationPdf(path)
    context = {}
    context = get_context(context)
    canv = canvas.Canvas(filename)

    for semestre_id in range(1, 7):
        modules = context['sem{0}'.format(str(semestre_id))]
        total = context['tot{0}'.format(str(semestre_id))]
        pdf.produce_half_year(semestre_id, modules, total, canv)

    pdf.print_total(context['tot'], canv)

    canv.save()

    with open(filename, mode='rb') as fh:
        response = HttpResponse(fh.read(), content_type='application/pdf')
        response['Content-Disposition'] = 'attachment; filename="{0}"'.format(filename)
    return response


def get_context(context):
    """
    Calcul du nombre de périodes de formation
    """
    liste = Module.objects.exclude(periode_presentiel=0)
    # context['tot'] = liste.aggregate(Sum(F('periode_presentiel')))
    context['sem1'] = liste.exclude(sem1=0)
    context['tot1'] = liste.aggregate(Sum(F('sem1')))['sem1__sum']
    context['sem2'] = liste.exclude(sem2=0)
    context['tot2'] = liste.aggregate(Sum(F('sem2')))['sem2__sum']
    context['sem3'] = liste.exclude(sem3=0)
    context['tot3'] = liste.aggregate(Sum(F('sem3')))['sem3__sum']
    context['sem4'] = liste.exclude(sem4=0)
    context['tot4'] = liste.aggregate(Sum(F('sem4')))['sem4__sum']
    context['sem5'] = liste.exclude(sem5=0)
    context['tot5'] = liste.aggregate(Sum(F('sem5')))['sem5__sum']
    context['sem6'] = liste.exclude(sem6=0)
    context['tot6'] = liste.aggregate(Sum(F('sem6')))['sem6__sum']

    context['tot'] = context['tot1'] + context['tot2'] + context['tot3'] + context['tot4'] \
                     + context['tot5'] + context['tot6']
    return context
    
    
class PeriodeView(TemplateView):
    template_name = 'cms/periodes.html'

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


class CompetenceListView(ListView):
    model = Competence
    template_name = 'cms/competence_list.html'


class TravailPersoListView(ListView):
    model = Module
    template_name = 'cms/travail_perso.html'
    
    def get_context_data(self, **kwargs):
        context = ListView.get_context_data(self, **kwargs)
        context['total_perso'] = Module.objects.aggregate((Sum('travail_perso')))['travail_perso__sum']
        context['total_presentiel'] = Module.objects.aggregate((Sum('periode_presentiel')))['periode_presentiel__sum']
        context['total_pratique'] = Module.objects.aggregate((Sum('pratique_prof')))['pratique_prof__sum']
        return get_context(context)