# Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later

from datetime import timedelta

from django.db import transaction
from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.utils.translation import gettext_lazy as _
from django.utils import timezone
from django.views.generic import DetailView, UpdateView, TemplateView
from permission.views import ProtectQuerysetMixin, ProtectedCreateView

from .forms import BasicFoodForms, TransformedFoodForms
from .models import BasicFood, Food, QRCode, TransformedFood


class QRCodeView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
    """
    A view to add a basic food
    """
    model = QRCode
    extra_context = {"title": _("Add a new meal")}
    context_object_name = "qrcode"
    slug_field = "qr_code_number"

    def get(self, *args, **kwargs):
        qrcode = kwargs["slug"]
        if self.model.objects.filter(qr_code_number=qrcode).count() > 0:
            return super().get(*args, **kwargs)
        else:
            return HttpResponseRedirect(reverse("food:qrcode_create", kwargs=kwargs))


class QRCodeCreateView(ProtectQuerysetMixin, LoginRequiredMixin, TemplateView):
    """
    A view to add a basic food
    """
    template_name = 'food/create_qrcode_form.html'
    extra_context = {"title": _("Add a new aliment")}

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["slug"] = kwargs["slug"]
        return context


class FoodView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
    """
    A view to add a basic food
    """
    model = Food
    extra_context = {"title": _("Add a new meal")}
    context_object_name = "food"


class FoodCreateView(ProtectQuerysetMixin, LoginRequiredMixin, TemplateView):
    """
    A view to add a basic food
    """
    template_name = 'food/create_food_form.html'
    extra_context = {"title": _("Add a new aliment")}


class BasicFoodFormView(ProtectQuerysetMixin):
    #####################################################################
    # TO DO
    # - fix picture save
    # - implement solution crop and convert image (reuse or recode ImageForm from members apps)
    #####################################################################
    """
    A view to add a basic food
    """
    model = BasicFood
    form_class = BasicFoodForms
    template_name = 'food/basic_food_form.html'
    extra_context = {"title": _("Add a new aliment")}

    @transaction.atomic
    def form_valid(self, form):
        form.instance.creater = self.request.user
        basic_food_form = BasicFoodForms(data=self.request.POST)
        if not basic_food_form.is_valid():
            return self.form_invalid(form)

        # Save the aliment and the allergens associed
        basic_food = form.save(commit=False)
        # We assume the date of labeling and the same as the date of arrival
        basic_food.arrival_date = timezone.now()
        basic_food._force_save = True
        basic_food.save()
        basic_food.refresh_from_db()
        return super().form_valid(form)

    def get_success_url(self, **kwargs):
        self.object.refresh_from_db()
        return reverse('food:food_view', kwargs={"pk": self.object.pk})


class BasicFoodUpdateView(BasicFoodFormView, LoginRequiredMixin, UpdateView):
    pass


class BasicFoodCreateView(BasicFoodFormView, ProtectedCreateView):
    def get_sample_object(self):
        return BasicFood(
            name="",
            expiry_date=timezone.now(),
        )


class QRCodeBasicFoodCreateView(ProtectQuerysetMixin, ProtectedCreateView):
    #####################################################################
    # TO DO
    # - fix picture save
    # - implement solution crop and convert image (reuse or recode ImageForm from members apps)
    #####################################################################
    """
    A view to add a basic food
    """
    model = BasicFood
    form_class = BasicFoodForms
    template_name = 'food/basic_food_form.html'
    extra_context = {"title": _("Add a new aliment")}

    @transaction.atomic
    def form_valid(self, form):
        form.instance.creater = self.request.user
        basic_food_form = BasicFoodForms(data=self.request.POST)
        if not basic_food_form.is_valid():
            return self.form_invalid(form)

        # Save the aliment and the allergens associed
        basic_food = form.save(commit=False)
        # We assume the date of labeling and the same as the date of arrival
        basic_food.arrival_date = timezone.now()
        basic_food._force_save = True
        basic_food.save()
        basic_food.refresh_from_db()

        qrcode = QRCode()
        qrcode.qr_code_number = self.kwargs['slug']
        qrcode.food_container = basic_food
        qrcode.save()

        return super().form_valid(form)

    def get_success_url(self, **kwargs):
        self.object.refresh_from_db()
        return reverse('food:food_view', kwargs={"pk": self.object.pk})

    def get_sample_object(self):
        return BasicFood(
            name="",
            expiry_date=timezone.now(),
        )


class TransformedFoodFormView(ProtectQuerysetMixin):
    #####################################################################
    # TO DO
    # - fix picture save
    # - implement solution crop and convert image (reuse or recode ImageForm from members apps)
    #####################################################################
    """
    A view to add a tranformed food
    """
    model = TransformedFood
    template_name = 'food/transformed_food_form.html'
    form_class = TransformedFoodForms
    extra_context = {"title": _("Add a new meal")}

    @transaction.atomic
    def form_valid(self, form):
        form.instance.creater = self.request.user
        transformed_food_form = TransformedFoodForms(data=self.request.POST)
        if not transformed_food_form.is_valid():
            return self.form_invalid(form)

        # Save the aliment and allergens associated
        transformed_food = form.save(commit=False)
        # Without microbiological analyzes, the storage time is 3 days
        transformed_food.expiry_date = transformed_food.creation_date + timedelta(days=3)
        transformed_food._force_save = True
        transformed_food.save()
        transformed_food.refresh_from_db()
        return super().form_valid(form)

    def get_success_url(self, **kwargs):
        self.object.refresh_from_db()
        return reverse('food:food_view', kwargs={"pk": self.object.pk})


class TransformedFoodUpdateView(TransformedFoodFormView, LoginRequiredMixin, UpdateView):
    pass


class TransformedFoodCreateView(TransformedFoodFormView, ProtectedCreateView):
    def get_sample_object(self):
        return TransformedFood(
            name="",
            creation_date=timezone.now(),
        )


class QRCodeTransformedFoodCreateView(ProtectQuerysetMixin, ProtectedCreateView):
    #####################################################################
    # TO DO
    # - fix picture save
    # - implement solution crop and convert image (reuse or recode ImageForm from members apps)
    #####################################################################
    """
    A view to add a basic food
    """
    model = TransformedFood
    template_name = 'food/transformed_food_form.html'
    form_class = TransformedFoodForms
    extra_context = {"title": _("Add a new meal")}

    @transaction.atomic
    def form_valid(self, form):
        form.instance.creater = self.request.user
        transformed_food_form = TransformedFoodForms(data=self.request.POST)
        if not transformed_food_form.is_valid():
            return self.form_invalid(form)

        # Save the aliment and allergens associated
        transformed_food = form.save(commit=False)
        # Without microbiological analyzes, the storage time is 3 days
        transformed_food.expiry_date = transformed_food.creation_date + timedelta(days=3)
        transformed_food._force_save = True
        transformed_food.save()
        transformed_food.refresh_from_db()

        qrcode = QRCode()
        qrcode.qr_code_number = self.kwargs['slug']
        qrcode.food_container = transformed_food
        qrcode.save()

        return super().form_valid(form)

    def get_success_url(self, **kwargs):
        self.object.refresh_from_db()
        return reverse('food:food_view', kwargs={"pk": self.object.pk})

    def get_sample_object(self):
        return BasicFood(
            name="",
            expiry_date=timezone.now(),
        )