from django.shortcuts import render, redirect

from django.views.generic import CreateView, UpdateView, DeleteView, ListView
from django.urls import reverse_lazy
from django.contrib.auth.mixins import (
    LoginRequiredMixin,
    UserPassesTestMixin,
    PermissionRequiredMixin,
)
from django.contrib.messages.views import SuccessMessageMixin
from django.views import View

from expenses.models import Category, RawExpense, Expense, MultiplePaymentExepense
from expenses.forms import (
    CategoryForm,
    ExpenseForm,
    LoneExpenseForm,
    SubExpenseForm,
    MultiplePaymentExepenseForm,
)


def homepage(request):
    return category_list(request)


def category_list(request):
    categories = Category.objects.all()
    form = CategoryForm(request.GET or None)
    if form.is_valid():
        data = form.cleaned_data
    return render(
        request, "categories_list.html", {"categories": categories, "form": form}
    )


def category_detail(request, pk):
    category = Category.objects.get(pk=pk)
    return render(request, "category_detail.html", {"category": category})


class CategoryCreateView(CreateView):
    model = Category
    fields = "__all__"
    template_name = "category_create.html"
    success_url = reverse_lazy("expenses:categories_list")
    success_message = "Sensor removed successfully"


class CategoryUpdateView(UpdateView):
    model = Category
    fields = "__all__"
    template_name = "category_create.html"
    success_url = reverse_lazy("expenses:categories_list")
    success_message = "Category updated successfully"


class CategoryDeleteView(UserPassesTestMixin, SuccessMessageMixin, DeleteView):
    model = Category
    fields = "__all__"
    template_name = "category_delete.html"
    success_url = reverse_lazy("expenses:categories_list")
    success_message = "Category removed successfully"

    def test_func(self):
        return self.request.user.is_superuser


def expenses_list(request):
    expenses = Expense.objects.all()
    form = ExpenseForm(request.GET or None)
    if form.is_valid():
        data = form.cleaned_data
    return render(request, "expense_list.html", {"expenses": expenses, "form": form})


def lone_expense_create(request):
    form = LoneExpenseForm(request.POST or None)
    if form.is_valid():
        instance = form.save()
        expense = Expense(
            content_object=instance,
        )
        expense.save()
        return redirect("expenses:expense_list")
    return render(request, "lone_expense_create.html", {"form": form})


def multiple_expense_create(request):
    multiple_expense_form = MultiplePaymentExepenseForm(request.POST or None)
    lone_expense_form = SubExpenseForm(request.POST or None)
    if multiple_expense_form.is_valid() and lone_expense_form.is_valid():
        multiple_expense = multiple_expense_form.save()
        lone_expense = lone_expense_form.save(commit=False)
        lone_expense.date = multiple_expense.first_payment_date
        lone_expense.name = multiple_expense.name + " 1st payment"
        lone_expense = lone_expense.save()
        print(lone_expense)
        multiple_expense.payments.add(lone_expense)
        multiple_expense.save()
        expense = Expense(
            content_object=multiple_expense,
        )
        expense.save()
        return redirect("expenses:expense_list")
    context = {
            'multiple_expense_form': multiple_expense_form,
            'lone_expense_form': lone_expense_form,
        }
    return render(request, "expense_create.html", context)


def create_expense(request):
    form = ExpenseForm(request.POST or None)
    if form.is_valid():
        instance = form.save()
        expense = Expense(
            content_object=instance,
        )
        expense.save()
        #        return HttpResponseRedirect('/')
        return redirect("expenses:expense_list")

    return render(request, "create_expense.html", {"form": form})


class RawExpenseListView(ListView):
    model = RawExpense
    fields = "__all__"
    template_name = "raw_expenses_list.html"


def expense_detail(request, pk):
    expense = Expense.objects.get(pk=pk)
    return render(request, "expense_detail.html", {"expense": expense})