from django.views.generic import ListView,  CreateView, UpdateView, DeleteView, DetailView
from django.contrib.auth.mixins import LoginRequiredMixin , PermissionRequiredMixin
from Movement.Forms import FormsStock
from Movement import models
from django.urls import reverse_lazy
from django.contrib import messages
from django.utils import timezone

class StockListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
    model = models.Stock
    template_name = 'Stock/List.html'
    context_object_name = 'Stocks'
    paginate_by = 10
    permission_required = 'Base.view_professional'
    def get_queryset(self):
        queryset = super().get_queryset()
        date = self.request.GET.get('date')
        if date:
            queryset = queryset.filter(date__icontains=date)
        else:
            queryset = queryset.filter(date__icontains=timezone.localdate())
        return queryset

class StockCreateView(LoginRequiredMixin,PermissionRequiredMixin, CreateView):
    model = models.Stock
    template_name = 'Stock/Create.html'
    form_class = FormsStock.FormsStock
    success_url = reverse_lazy('MovStockListView')
    permission_required = 'Base.add_professional'

    def form_valid(self, form):
        gross_value = form.instance.gross_value
        quantity = form.instance.quantity
        form.instance.unit_value = gross_value / quantity
        form.instance.created_by = self.request.user
        messages.success(self.request, 'Registro realizado com sucesso!')
        return super().form_valid(form)

    def form_invalid(self, form):
        errors = form.errors.as_text()
        messages.error(self.request, f'Verifique os dados: {errors}')
        return super().form_invalid(form)

class StockDetailView(LoginRequiredMixin,PermissionRequiredMixin, DetailView):
    model = models.Stock
    template_name = 'Stock/Detail.html'
    permission_required = 'Base.view_professional'

class StockUpdateView(LoginRequiredMixin,PermissionRequiredMixin, UpdateView):
    model = models.Stock
    template_name = 'Stock/Update.html'
    form_class = FormsStock.FormsStock
    success_url = reverse_lazy('MovStockListView')
    permission_required = 'Base.change_professional'

class StockDeleteView(LoginRequiredMixin,PermissionRequiredMixin, DeleteView):
    model = models.Stock
    template_name = 'Stock/Delete.html'
    success_url = reverse_lazy('MovStockListView')
    permission_required = 'Base.delete_professional'