from django.shortcuts import render, redirect, get_object_or_404
from django.contrib import messages
from django.urls import reverse
from django.http import HttpResponse, Http404
from django.contrib.auth.models import User
from django.views.decorators.csrf import csrf_exempt
from django.contrib.auth.decorators import login_required, permission_required
from django.utils import timezone

from coopeV3.acl import active_required, acl_or

import simplejson as json
from dal import autocomplete
from decimal import *

from .forms import ReloadForm, RefundForm, ProductForm, KegForm, MenuForm, GestionForm, SearchMenuForm, SearchProductForm, SelectPositiveKegForm, SelectActiveKegForm, PinteForm
from .models import Product, Menu, Keg, ConsumptionHistory, KegHistory, Consumption, MenuHistory, Pinte
from preferences.models import PaymentMethod, GeneralPreferences

@active_required
@login_required
@acl_or('gestion.add_consumptionhistory', 'gestion.add_reload', 'gestion.add_refund')
def manage(request):
    """
    Display the manage page

    **Context**
    
    ``gestion_form``
        The manage form
    
    ``reload_form``
        The :model:`gestion.Reload` form

    ``refund_form``
        The :model:`gestion.Refund` form

    ``bieresPression``
        A list of active :model:`gestion.Product` corresponding to draft beers

    ``bieresBouteille``
        A list of active :model:`gestion.Product` corresponding to bottle beers

    ``panini``
        A list of active :model:`gestion.Product` corresponding to panini items
        
    ``food``
        A list of active :model:`gestion.Product` corresponding to non-panini items

    ``soft``
        A list of active :model:`gestion.Product` correspond to non alcoholic beverage
    
    ``menus``
        The list of active :model:`gestion.Menu`

    ``pay_buttons``
        List of :model:`paymentMethod`

    **Template**

    :template:`gestion/manage.html`
    """
    pay_buttons = PaymentMethod.objects.filter(is_active=True)
    gestion_form = GestionForm(request.POST or None)
    reload_form = ReloadForm(request.POST or None)
    refund_form = RefundForm(request.POST or None)
    bieresPression = []
    bieresBouteille = Product.objects.filter(category=Product.BOTTLE).filter(is_active=True)
    panini = Product.objects.filter(category=Product.PANINI).filter(is_active=True)
    food = Product.objects.filter(category=Product.FOOD).filter(is_active=True)
    soft = Product.objects.filter(category=Product.SOFT).filter(is_active=True)
    menus = Menu.objects.filter(is_active=True)
    kegs = Keg.objects.filter(is_active=True)
    for keg in kegs:
        if(keg.pinte):
            bieresPression.append(keg.pinte)
        if(keg.demi):
            bieresPression.append(keg.demi)
        if(keg.galopin):
            bieresPression.append(keg.galopin)
    return render(request, "gestion/manage.html", {
        "gestion_form": gestion_form,
        "reload_form": reload_form,
        "refund_form": refund_form,
        "bieresPression": bieresPression,
        "bieresBouteille": bieresBouteille,
        "panini": panini,
        "food": food,
        "soft": soft,
        "menus": menus,
        "pay_buttons": pay_buttons
        })

@csrf_exempt
@active_required
@login_required
@permission_required('gestion.add_consumptionhistory')
def order(request):
    """
    Process the given order. Called by a js/JQuery script.
    """
    if("user" not in request.POST or "paymentMethod" not in request.POST or "amount" not in request.POST or "order" not in request.POST):
        return HttpResponse("Erreur du POST")
    else:
        user = get_object_or_404(User, pk=request.POST['user'])
        paymentMethod = get_object_or_404(PaymentMethod, pk=request.POST['paymentMethod'])
        amount = Decimal(request.POST['amount'])
        order = json.loads(request.POST["order"])
        menus = json.loads(request.POST["menus"])
        listPintes = json.loads(request.POST["listPintes"])
        gp,_ = GeneralPreferences.objects.get_or_create(pk=1)
        if (not order) and (not menus):
            return HttpResponse("Pas de commande")
        adherentRequired = False
        for o in order:
            product = get_object_or_404(Product, pk=o["pk"])
            adherentRequired = adherentRequired or product.adherentRequired
        for m in menus:
            menu = get_object_or_404(Menu, pk=m["pk"])
            adherentRequired = adherentRequired or menu.adherent_required
        if(adherentRequired and not user.profile.is_adherent):
            return HttpResponse("N'est pas adhérent et devrait l'être")
        # Partie un peu complexe : je libère toutes les pintes de la commande, puis je test
        # s'il a trop de pintes non rendues, puis je réalloue les pintes
        for pinte in listPintes:
            allocate(pinte, None)
        if(gp.lost_pintes_allowed and user.profile.nb_pintes >= gp.lost_pintes_allowed):
            return HttpResponse("Impossible de réaliser la commande : l'utilisateur a perdu trop de pintes.")
        for pinte in listPintes:
            allocate(pinte, user)
        if(paymentMethod.affect_balance):
            if(user.profile.balance < amount):
                return HttpResponse("Solde inférieur au prix de la commande")
            else:
                user.profile.debit += amount
                user.save()
        for o in order:
            product = get_object_or_404(Product, pk=o["pk"])
            quantity = int(o["quantity"])
            if(product.category == Product.P_PRESSION):
                keg = get_object_or_404(Keg, pinte=product)
                if(not keg.is_active):
                    return HttpResponse("Une erreur inconnue s'est produite. Veuillez contacter le trésorier ou le président")
                kegHistory = get_object_or_404(KegHistory, keg=keg, isCurrentKegHistory=True)
                kegHistory.quantitySold += Decimal(quantity * 0.5)
                kegHistory.amountSold += Decimal(quantity * product.amount)
                kegHistory.save()
            elif(product.category == Product.D_PRESSION):
                keg = get_object_or_404(Keg, demi=product)
                if(not keg.is_active):
                    return HttpResponse("Une erreur inconnue s'est produite. Veuillez contacter le trésorier ou le président")
                kegHistory = get_object_or_404(KegHistory, keg=keg, isCurrentKegHistory=True)
                kegHistory.quantitySold += Decimal(quantity * 0.25)
                kegHistory.amountSold += Decimal(quantity * product.amount)
                kegHistory.save()
            elif(product.category == Product.G_PRESSION):
                keg = get_object_or_404(Keg, galopin=product)
                if(not keg.is_active):
                    return HttpResponse("Une erreur inconnue s'est produite. Veuillez contacter le trésorier ou le président")
                kegHistory = get_object_or_404(KegHistory, keg=keg, isCurrentKegHistory=True)
                kegHistory.quantitySold += Decimal(quantity * 0.125)
                kegHistory.amountSold += Decimal(quantity * product.amount)
                kegHistory.save()
            else:
                if(product.stockHold > 0):
                    product.stockHold -= 1
                    product.save()
            consumption, _ = Consumption.objects.get_or_create(customer=user, product=product)
            consumption.quantity += quantity
            consumption.save()
            ch = ConsumptionHistory(customer=user, quantity=quantity, paymentMethod=paymentMethod, product=product, amount=Decimal(quantity*product.amount), coopeman=request.user)
            ch.save()
        for m in menus:
            menu = get_object_or_404(Menu, pk=m["pk"])
            quantity = int(m["quantity"])
            mh = MenuHistory(customer=user, quantity=quantity, paymentMethod=paymentMethod, menu=menu, amount=int(quantity*menu.amount), coopeman=request.user)
            mh.save()
            for article in menu.articles.all():
                consumption, _ = Consumption.objects.get_or_create(customer=user, product=article)
                consumption.quantity += quantity
                consumption.save()
                if(article.stockHold > 0):
                    article.stockHold -= 1
                    article.save()
        return HttpResponse("La commande a bien été effectuée")

@active_required
@login_required
@permission_required('gestion.add_reload')
def reload(request):
    """
    Process a reload request
    """
    reload_form = ReloadForm(request.POST or None)
    if reload_form.is_valid():
        reload_entry = reload_form.save(commit=False)
        reload_entry.coopeman = request.user
        reload_entry.save()
        user = reload_form.cleaned_data['customer']
        amount = reload_form.cleaned_data['amount']
        user.profile.credit += amount
        user.save()
        messages.success(request, "Le compte de " + user.username + " a bien été crédité de " + str(amount) + "€")
    else:
        messages.error(request, "Le rechargement a échoué")
    return redirect(reverse('gestion:manage'))

@active_required
@login_required
@permission_required('gestion.add_refund')
def refund(request):
    """
    Process a refund request
    """
    refund_form = RefundForm(request.POST or None)
    if refund_form.is_valid():
        user = refund_form.cleaned_data['customer']
        amount = refund_form.cleaned_data['amount']
        if amount <= user.profile.balance:
            refund_entry = refund_form.save(commit = False)
            refund_entry.coopeman = request.user
            refund_entry.save()
            user.profile.credit -= amount
            user.save()
            messages.success(request, "Le compte de " + user.username + " a bien été remboursé de " + str(amount) + "€")
        else:
            messages.error(request, "Impossible de rembourser l'utilisateur " + user.username + " de " + str(amount)  + "€ : il n'a que " + str(user.profile.balance)  + "€ sur son compte.")
    else:
        messages.error(request, "Le remboursement a échoué")
    return redirect(reverse('gestion:manage'))

@active_required
@login_required
@permission_required('gestion.delete_consumptionhistory')
def cancel_consumption(request, pk):
    """
    Cancel a :model:`gestion.ConsumptionHistory`

    ``pk``
        The primary key of the :model:`gestion.ConsumptionHistory` that have to be cancelled
    """
    consumption = get_object_or_404(ConsumptionHistory, pk=pk)
    user = consumption.customer
    if consumption.paymentMethod.affect_balance:
        user.profile.debit -= consumption.amount
        user.save()
    consumptionT = Consumption.objects.get(customer=user, product=consumption.product)
    consumptionT.quantity -= consumption.quantity
    consumptionT.save()
    consumption.delete()
    messages.success(request, "La consommation a bien été annulée")
    return redirect(reverse('users:profile', kwargs={'pk': user.pk}))

@active_required
@login_required
@permission_required('gestion.delete_menuhistory')
def cancel_menu(request, pk):
    """
    Cancel a :model:`gestion.MenuHistory`

    ``pk``
        The primary key of the :model:`gestion.MenuHistory` that have to be cancelled
    """
    menu_history = get_object_or_404(MenuHistory, pk=pk)
    user = menu_history.customer
    if menu_history.paymentMethod.affect_balance:
        user.profile.debit -= menu_history.amount
        user.save()
    for product in manu_history.menu.articles:
        consumptionT = Consumption.objects.get(customer=user, product=product)
        consumptionT -= menu_history.quantity
        consumptionT.save()                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
    menu_history.delete()
    messages.success(request, "La consommation du menu a bien été annulée")
    return redirect(reverse('users:profile', kwargs={'pk': user.pk}))

########## Products ##########
@active_required
@login_required
@acl_or('gestion.add_product', 'gestion.view_product', 'gestion.add_keg', 'gestion.view_keg', 'gestion.change_keg', 'gestion.view_menu', 'gestion.add_menu')
def productsIndex(request):
    """
    Display the products manage static page

    **Template**

    :template:`gestion/products_index.html`
    """
    return render(request, "gestion/products_index.html")

@active_required
@login_required
@permission_required('gestion.add_product')
def addProduct(request):
    """
    Form to add a :model:`gestion.Product`

    **Context**

    ``form``
        The ProductForm instance
    
    ``form_title``
        The title for the form template

    ``form_button``
        The text of the button for the form template

    **Template**

    :template:`form.html`
    """
    form = ProductForm(request.POST or None)
    if(form.is_valid()):
        product = form.save()
        messages.success(request, "Le produit a bien été ajouté")
        return redirect(reverse('gestion:productProfile', kwargs={'pk':product.pk}))
    return render(request, "form.html", {"form": form, "form_title": "Ajout d'un produit", "form_button": "Ajouter"})

@active_required
@login_required
@permission_required('gestion.change_product')
def editProduct(request, pk):
    """
    Form to edit a :model:`gestion.Product`

    ``pk``
        The primary key of the requested :model:`gestion.Product`

    **Context**

    ``form``
        The ProductForm instance
    
    ``form_title``
        The title for the form template

    ``form_button``
        The text of the button for the form template

    **Template**

    :template:`form.html`
    """
    product = get_object_or_404(Product, pk=pk)
    form = ProductForm(request.POST or None, instance=product)
    if(form.is_valid()):
        form.save()
        messages.success(request, "Le produit a bien été modifié")
        return redirect(reverse('gestion:productProfile', kwargs={'pk':product.pk}))
    return render(request, "form.html", {"form": form, "form_title": "Modification d'un produit", "form_button": "Modifier"})

@active_required
@login_required
@permission_required('gestion.view_product')
def productsList(request):
    """
    Display the list of :model:`gestion.Product`

    **Context**

    ``products``
        The list of :model:`gestion.Product`

    **Template**

    :template:`gestion/products_list.html`
    """
    products = Product.objects.all()
    return render(request, "gestion/products_list.html", {"products": products})

@active_required
@login_required
@permission_required('gestion.view_product')
def searchProduct(request):
    """
    Form to search a :model:`gestion.Product`

    **Context**

    ``form``
        The SearchProductForm instance
    
    ``form_title``
        The title for the form template

    ``form_button``
        The text of the button for the form template

    **Template**

    :template:`form.html`
    """
    form = SearchProductForm(request.POST or None)
    if(form.is_valid()):
        return redirect(reverse('gestion:productProfile', kwargs={'pk': form.cleaned_data['product'].pk }))
    return render(request, "form.html", {"form": form, "form_title":"Rechercher un produit", "form_button": "Rechercher"})

@active_required
@login_required
@permission_required('gestion.view_product')
def productProfile(request, pk):
    """
    Display the profile of a :model:`gestion.Product`

    ``pk``
        The primary key of the requested :model:`gestion.Product`

    **Context**
    
    ``product``
        The :model:`gestion.Product` instance

    **Template**

    :model:`gestion/product_profile.html`
    """
    product = get_object_or_404(Product, pk=pk)
    return render(request, "gestion/product_profile.html", {"product": product})

@active_required
@login_required
def getProduct(request, barcode):
    """
    Get :model:`gestion.Product` by barcode. Called by a js/JQuery script

    ``barcode``
        The requested barcode
    """
    product = Product.objects.get(barcode=barcode)
    if product.category == Product.P_PRESSION:
        nb_pintes = 1
    else:
        nb_pintes = 0
    data = json.dumps({"pk": product.pk, "barcode" : product.barcode, "name": product.name, "amount": product.amount, "needQuantityButton": product.needQuantityButton, "nb_pintes": nb_pintes})
    return HttpResponse(data, content_type='application/json')

@active_required
@login_required
@permission_required('gestion.change_product')
def switch_activate(request, pk):
    """
    Switch the active status of the requested :model:`gestion.Product`

    ``pk``
        The primary key of the :model:`gestion.Product`
    """
    product = get_object_or_404(Product, pk=pk)
    product.is_active = 1 - product.is_active
    product.save()
    messages.success(request, "La disponibilité du produit a bien été changée")
    return redirect(reverse('gestion:productProfile', kwargs={'pk': product.pk}))

class ProductsAutocomplete(autocomplete.Select2QuerySetView):
    """
    Autocomplete view for all :model:`gestion.Product`
    """
    def get_queryset(self):
        qs = Product.objects.all()
        if self.q:
            qs = qs.filter(name__istartswith=self.q)
        return qs

########## Kegs ##########

@active_required
@login_required
@permission_required('gestion.add_keg')
def addKeg(request):
    """
    Display a form to add a :model:`gestion.Keg`

    **Context**
    
    ``form``
        The KegForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    form = KegForm(request.POST or None)
    if(form.is_valid()):
        keg = form.save()
        messages.success(request, "Le fût " + keg.name + " a bien été ajouté")
        return redirect(reverse('gestion:kegsList'))
    return render(request, "form.html", {"form":form, "form_title": "Ajout d'un fût", "form_button": "Ajouter"})

@active_required
@login_required
@permission_required('gestion.change_keg')
def editKeg(request, pk):
    """
    Display a form to edit a :model:`gestion.Keg`

    ``pk``
        The primary key of the requested :model:`gestion.Keg`

    **Context**
    
    ``form``
        The KegForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    keg = get_object_or_404(Keg, pk=pk)
    form = KegForm(request.POST or None, instance=keg)
    if(form.is_valid()):
        form.save()
        messages.success(request, "Le fût a bien été modifié")
        return redirect(reverse('gestion:kegsList'))
    return render(request, "form.html", {"form": form, "form_title": "Modification d'un fût", "form_button": "Modifier"})

@active_required
@login_required
@permission_required('gestion.open_keg')
def openKeg(request):
    """
    Display a form to open a :model:`gestion.Keg`

    **Context**
    
    ``form``
        The SelectPositiveKegForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    form = SelectPositiveKegForm(request.POST or None)
    if(form.is_valid()):
        keg = form.cleaned_data['keg']
        previousKegHistory = KegHistory.objects.filter(keg=keg).filter(isCurrentKegHistory=True)
        for pkh in previousKegHistory:
            pkh.isCurrentKegHistory = False
            pkh.closingDate = timezone.now()
            pkh.save()
        kegHistory = KegHistory(keg = keg)
        kegHistory.save()
        keg.stockHold -= 1
        keg.is_active = True
        keg.save()
        messages.success(request, "Le fut a bien été percuté")
        return redirect(reverse('gestion:kegsList'))
    return render(request, "form.html", {"form": form, "form_title":"Percutage d'un fût", "form_button":"Percuter"})

@active_required
@login_required
@permission_required('gestion.open_keg')
def openDirectKeg(request, pk):
    """
    Open the requested :model:`gestion.Keg`

    ``pk``
        The primary key of the :model:`gestion.Keg`
    """
    keg = get_object_or_404(Keg, pk=pk)
    if(keg.stockHold > 0):
        previousKegHistory = KegHistory.objects.filter(keg=keg).filter(isCurrentKegHistory=True)
        for pkh in previousKegHistory:
            pkh.isCurrentKegHistory = False
            pkh.closingDate = timezone.now()
            pkh.save()
        kegHistory = KegHistory(keg = keg)
        kegHistory.save()
        keg.stockHold -= 1
        keg.is_active = True
        keg.save()
        messages.success(request, "Le fût a bien été percuté")
    else:
        messages.error(request, "Il n'y a pas de fût en stock")
    return redirect(reverse('gestion:kegsList'))

@active_required
@login_required
@permission_required('gestion.close_keg')
def closeKeg(request):
    """
    Display a form to close a :model:`gestion.Keg`

    **Context**
    
    ``form``
        The SelectActiveKegForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    form = SelectActiveKegForm(request.POST or None)
    if(form.is_valid()):
        keg = form.cleaned_data['keg']
        kegHistory = get_object_or_404(KegHistory, keg=keg, isCurrentKegHistory=True)
        kegHistory.isCurrentKegHistory = False
        kegHistory.closingDate = timezone.now()
        kegHistory.save()
        keg.is_active = False
        keg.save()
        messages.success(request, "Le fût a bien été fermé")
        return redirect(reverse('gestion:kegsList'))
    return render(request, "form.html", {"form": form, "form_title":"Fermeture d'un fût", "form_button":"Fermer le fût"})

@active_required
@login_required
@permission_required('gestion.close_keg')
def closeDirectKeg(request, pk):
    """
    Close the requested :model:`gestion.Keg`

    ``pk``
        The pk of the active :model:`gestion.Keg`
    """
    keg = get_object_or_404(Keg, pk=pk)
    if keg.is_active:
        kegHistory = get_object_or_404(KegHistory, keg=keg, isCurrentKegHistory=True)
        kegHistory.isCurrentKegHistory = False
        kegHistory.closingDate = timezone.now()
        kegHistory.save()
        keg.is_active = False
        keg.save()
        messages.success(request, "Le fût a bien été fermé")
    else:
        messages.error(request, "Le fût n'est pas ouvert")
    return redirect(reverse('gestion:kegsList'))

@active_required
@login_required
@permission_required('gestion.view_keg')
def kegsList(request):
    """
    Display the list of :model:`gestion.Keg`

    **Context**

    ``kegs_active``
        List of active :model:`gestion.Keg`

    ``kegs_inactive``
        List of inactive :model:`gestion.Keg`

    **Template**

    :template:`gestion/kegs_list.html`
    """
    kegs_active = KegHistory.objects.filter(isCurrentKegHistory=True)
    ids_actives = kegs_active.values('id')
    kegs_inactive = Keg.objects.exclude(id__in = ids_actives)
    return render(request, "gestion/kegs_list.html", {"kegs_active": kegs_active, "kegs_inactive": kegs_inactive})

@active_required
@login_required
@permission_required('gestion.view_keghistory')
def kegH(request, pk):
    """
    Display the history of requested :model:`gestion.Keg`

    ``pk``
        The primary key of the requested :model:`gestion.Keg`

    **Context**

    ``keg``
        The :model:`gestion.Keg` instance
    
    ``kegHistory``
        List of :model:`gestion.KegHistory` attached to keg

    **Template**

    :template:`gestion/kegh.html`
    """
    keg = get_object_or_404(Keg, pk=pk)
    kegHistory = KegHistory.objects.filter(keg=keg).order_by('-openingDate')
    return render(request, "gestion/kegh.html", {"keg": keg, "kegHistory": kegHistory})

class KegActiveAutocomplete(autocomplete.Select2QuerySetView):
    """
    Autocomplete view for active :model:`gestion.Keg`
    """
    def get_queryset(self):
        qs = Keg.objects.filter(is_active = True)
        if self.q:
            qs = qs.filter(name__istartswith=self.q)
        return qs

class KegPositiveAutocomplete(autocomplete.Select2QuerySetView):
    """
    Autocomplete view for :model:`gestion.Keg` with positive stockHold
    """
    def get_queryset(self):
        qs = Keg.objects.filter(stockHold__gt = 0)
        if self.q:
            qs = qs.filter(name__istartswith=self.q)
        return qs

########## Menus ##########

@active_required
@login_required
@permission_required('gestion.add_menu')
def addMenu(request):
    """
    Display a form to add a :model:`gestion.Menu`

    **Context**
    
    ``form``
        The MenuForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    form = MenuForm(request.POST or None)
    extra_css = "#id_articles{height:200px;}"
    if(form.is_valid()):
        menu = form.save()
        messages.success(request, "Le menu " + menu.name + " a bien été ajouté")
        return redirect(reverse('gestion:menusList'))
    return render(request, "form.html", {"form":form, "form_title": "Ajout d'un menu", "form_button": "Ajouter", "extra_css": extra_css})

@active_required
@login_required
@permission_required('gestion.change_menu')
def edit_menu(request, pk):
    """
    Display a form to edit a :model:`gestion.Menu`

    ``pk``
        The primary key of requested :model:`gestion.Menu`

    **Context**
    
    ``form``
        The MenuForm instance
    
    ``form_title``
        The title for the :template:`form.html` template

    ``form_button``
        The text for the button in :template:`form.html` template

    **Template**

    :template:`form.html`
    """
    menu = get_object_or_404(Menu, pk=pk)
    form = MenuForm(request.POST or None, instance=menu)
    extra_css = "#id_articles{height:200px;}"
    if form.is_valid():
        form.save()
        messages.success(request, "Le menu a bien été modifié")
        return redirect(reverse('gestion:menusList'))
    return render(request, "form.html", {"form": form, "form_title": "Modification d'un menu", "form_button": "Modifier", "extra_css": extra_css})

@active_required
@login_required
@permission_required('gestion.view_menu')
def searchMenu(request):
    """
    Search a :model:`gestion.Menu` via SearchMenuForm instance

    **Context**

    ``form_entete``
        The form title.

    ``form``
        The SearchMenuForm instance.

    ``form_button``
        The content of the form button.

    **Template**

    :template:`form.html`
    """
    form = SearchMenuForm(request.POST or None)
    if(form.is_valid()):
        menu = form.cleaned_data['menu']
        return redirect(reverse('gestion:editMenu', kwargs={'pk':menu.pk}))
    return render(request, "form.html", {"form": form, "form_title": "Recherche d'un menu", "form_button": "Modifier"})

@active_required
@login_required
@permission_required('gestion.view_menu')
def menus_list(request):
    """
    Display the :model:`gestion.Menu` list

    **Context**

    ``menus``
        The list of :model:`gestion.Menu` instances

    **Template**

    :template:`gestion/menus_list.html`
    """
    menus = Menu.objects.all()
    return render(request, "gestion/menus_list.html", {"menus": menus})

@active_required
@login_required
@permission_required('gestion.change_menu')
def switch_activate_menu(request, pk):
    """
    Switch active status of a :model:`gestion.Menu`

    ``pk``
        The pk of the :model:`gestion.Menu`
    """
    menu = get_object_or_404(Menu, pk=pk)
    menu.is_active = 1 - menu.is_active
    menu.save()
    messages.success(request, "La disponibilité du menu a bien été changée")
    return redirect(reverse('gestion:menusList'))

@active_required
@login_required
@permission_required('gestion.view_menu')
def get_menu(request, barcode):
    """
    Search :model:`gestion.Menu` by barcode

    ``barcode``
        The requested barcode
    """
    menu = get_object_or_404(Menu, barcode=barcode)
    nb_pintes = 0
    for article in menu.articles:
        if article.category == Product.P_PRESSION:
            nb_pintes +=1
    data = json.dumps({"pk": menu.pk, "barcode" : menu.barcode, "name": menu.name, "amount" : menu.amount, needQuantityButton: False, "nb_pintes": nb_pintes})
    return HttpResponse(data, content_type='application/json')

class MenusAutocomplete(autocomplete.Select2QuerySetView):
    """
    Used as autcomplete for all :model:`gestion.Menu`
    """
    def get_queryset(self):
        qs = Menu.objects.all()
        if self.q:
            qs = qs.filter(name__istartswith=self.q)
        return qs

########## Ranking ##########

@active_required
@login_required
def ranking(request):
    """
    Display the ranking page

    **Context**

    ``bestBuyers``
        List of the 25 best buyers

    ``bestDrinkers``
        List of the 25 best drinkers

    **Template**

    :template: `gestion/ranking.html`
    """
    bestBuyers = User.objects.order_by('-profile__debit')[:25]
    customers = User.objects.all()
    list = []
    for customer in customers:
        alcohol = customer.profile.alcohol
        list.append([customer, alcohol])
    bestDrinkers = sorted(list, key=lambda x: x[1], reverse=True)[:25]
    return render(request, "gestion/ranking.html", {"bestBuyers": bestBuyers, "bestDrinkers": bestDrinkers})

########## Pinte monitoring ##########

def allocate(pinte_pk, user):
    """
    Allocate a pinte to a user or release the pinte if user is None
    """
    try:
        pinte = Pinte.objects.get(pk=pinte_pk)
        if pinte.current_owner is not None:
            pinte.previous_owner = pinte.current_owner
        pinte.current_owner = user
        pinte.save()
        return True
    except Pinte.DoesNotExist:
        return False

@active_required
@login_required
@permission_required('gestion.change_pinte')
def release(request, pinte_pk):
    """
    View to release a pinte
    """
    if allocate(pinte_pk, None):
        messages.success(request, "La pinte a bien été libérée")
    else:
        messages.error(request, "Impossible de libérer la pinte")
    return redirect(reverse('gestion:pintesList'))
    
@active_required
@login_required
@permission_required('gestion.add_pinte')
def add_pintes(request):
    form = PinteForm(request.POST or None)
    if form.is_valid():
        ids = form.cleaned_data['ids']
        if ids != "":
            ids = ids.split(" ")
        else:
            ids = range(form.cleaned_data['begin'], form.cleaned_data['end'] + 1)
        i = 0
        for id in ids:
            if not Pinte.objects.filter(pk=id).exists():
                new_pinte = Pinte(pk=int(id))
                new_pinte.save()
                i += 1
        messages.success(request, str(i) + " pinte(s) a(ont) été ajoutée(s)")
        return redirect(reverse('gestion:productsIndex'))
    return render(request, "form.html", {"form": form, "form_title": "Ajouter des pintes", "form_button": "Ajouter"})

@active_required
@login_required
@permission_required('gestion.change_pinte')
def release_pintes(request):
    form = PinteForm(request.POST or None)
    if form.is_valid():
        ids = form.cleaned_data['ids']
        if ids != "":
            ids = ids.split(" ")
        else:
            ids = range(form.cleaned_data['begin'], form.cleaned_data['end'] + 1)
        i = 0
        for id in ids:
            if allocate(id, None):
                i += 1
        messages.success(request, str(i) + " pinte(s) a(ont) été libérée(s)")
        return redirect(reverse('gestion:productsIndex'))
    return render(request, "form.html", {"form": form, "form_title": "Libérer des pintes", "form_button": "Libérer"})

@active_required
@login_required
@permission_required('gestion.view_pinte')
def pintes_list(request):
    free_pintes = Pinte.objects.filter(current_owner=None)
    taken_pintes = Pinte.objects.exclude(current_owner=None)
    return render(request, "gestion/pintes_list.html", {"free_pintes": free_pintes, "taken_pintes": taken_pintes})