from django.shortcuts import render, redirect, get_object_or_404
from django.urls import reverse_lazy
from django.views.generic import ListView, CreateView, UpdateView, DeleteView
from .models import Product

class DashboardView(ListView):
    model = Product
    template_name = 'core/index.html'
    context_object_name = 'products'

class ProductListView(ListView):
    model = Product
    template_name = 'core/product_list.html'
    context_object_name = 'products'

    def get_queryset(self):
        queryset = super().get_queryset()
        name = self.request.GET.get('name')
        category = self.request.GET.get('category')

        if name:
            queryset = queryset.filter(name__icontains=name)
        
        if category:
            queryset = queryset.filter(category__iexact=category)
        
        return queryset

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['categories'] = Product.objects.values_list('category', flat=True).distinct()
        return context

class ProductCreateView(CreateView):
    model = Product
    template_name = 'core/product_form.html'
    fields = ['name', 'category', 'sku', 'price', 'stock', 'minimum_stock_level']
    success_url = reverse_lazy('core:product-list')

class ProductUpdateView(UpdateView):
    model = Product
    template_name = 'core/product_form.html'
    fields = ['name', 'category', 'sku', 'price', 'stock', 'minimum_stock_level']
    success_url = reverse_lazy('core:product-list')

class ProductDeleteView(DeleteView):
    model = Product
    template_name = 'core/product_confirm_delete.html'
    success_url = reverse_lazy('core:product-list')

# The home view is now the product list view.
home = DashboardView.as_view()