"""
CRUD для справочников (списки и формы).
"""
import logging
from django.views.generic import ListView, CreateView, UpdateView, DeleteView
from config.mixins import LoginRequiredMixin
from django.urls import reverse_lazy
from django.contrib import messages
from django.utils.translation import gettext_lazy as _

from .models import (
    Currency,
    OrderKind,
    Client,
    Organization,
    Supplier,
    Employee,
    CashAccount,
    Product,
    OrderStatus,
)

logger = logging.getLogger(__name__)


def _ref_view(model_class, list_url_name, create_url_name, update_url_name, delete_url_name, list_title, form_title):
    """Фабрика представлений для одного справочника."""
    class List(LoginRequiredMixin, ListView):
        model = model_class
        template_name = "references/reference_list.html"
        context_object_name = "items"
        extra_context = {
            "title": list_title,
            "create_url_name": create_url_name,
            "update_url_name": update_url_name,
            "delete_url_name": delete_url_name,
        }

    class Create(LoginRequiredMixin, CreateView):
        model = model_class
        fields = "__all__"
        template_name = "references/reference_form.html"
        success_url = reverse_lazy(list_url_name)
        extra_context = {"title": form_title, "cancel_url": reverse_lazy(list_url_name)}

        def form_valid(self, form):
            messages.success(self.request, _("Запись создана."))
            logger.info("Справочник %s: создана запись %s", model_class.__name__, form.instance)
            return super().form_valid(form)

    class Update(LoginRequiredMixin, UpdateView):
        model = model_class
        fields = "__all__"
        template_name = "references/reference_form.html"
        success_url = reverse_lazy(list_url_name)
        context_object_name = "object"
        extra_context = {"title": form_title, "cancel_url": reverse_lazy(list_url_name)}

        def form_valid(self, form):
            messages.success(self.request, _("Запись сохранена."))
            logger.info("Справочник %s: обновлена запись %s", model_class.__name__, form.instance)
            return super().form_valid(form)

    class Delete(LoginRequiredMixin, DeleteView):
        model = model_class
        template_name = "references/reference_confirm_delete.html"
        success_url = reverse_lazy(list_url_name)
        context_object_name = "object"
        extra_context = {"cancel_url": reverse_lazy(list_url_name)}

        def form_valid(self, form):
            messages.success(self.request, _("Запись удалена."))
            logger.info("Справочник %s: удалена запись %s", model_class.__name__, self.object)
            return super().form_valid(form)

    return List, Create, Update, Delete

# Валюты
CurrencyList, CurrencyCreate, CurrencyUpdate, CurrencyDelete = _ref_view(
    Currency, "references:currency_list", "references:currency_create",
    "references:currency_update", "references:currency_delete",
    "Валюты", "Валюта",
)

# Виды заказов
OrderKindList, OrderKindCreate, OrderKindUpdate, OrderKindDelete = _ref_view(
    OrderKind, "references:orderkind_list", "references:orderkind_create",
    "references:orderkind_update", "references:orderkind_delete",
    "Виды заказов", "Вид заказа",
)

# Клиенты
ClientList, ClientCreate, ClientUpdate, ClientDelete = _ref_view(
    Client, "references:client_list", "references:client_create",
    "references:client_update", "references:client_delete",
    "Клиенты", "Клиент",
)

# Организации
OrganizationList, OrganizationCreate, OrganizationUpdate, OrganizationDelete = _ref_view(
    Organization, "references:organization_list", "references:organization_create",
    "references:organization_update", "references:organization_delete",
    "Организации", "Организация",
)

# Поставщики
SupplierList, SupplierCreate, SupplierUpdate, SupplierDelete = _ref_view(
    Supplier, "references:supplier_list", "references:supplier_create",
    "references:supplier_update", "references:supplier_delete",
    "Поставщики", "Поставщик",
)

# Сотрудники
EmployeeList, EmployeeCreate, EmployeeUpdate, EmployeeDelete = _ref_view(
    Employee, "references:employee_list", "references:employee_create",
    "references:employee_update", "references:employee_delete",
    "Сотрудники", "Сотрудник",
)

# Счета денежных средств
CashAccountList, CashAccountCreate, CashAccountUpdate, CashAccountDelete = _ref_view(
    CashAccount, "references:cashaccount_list", "references:cashaccount_create",
    "references:cashaccount_update", "references:cashaccount_delete",
    "Счета денежных средств", "Счёт денежных средств",
)

# Товары
ProductList, ProductCreate, ProductUpdate, ProductDelete = _ref_view(
    Product, "references:product_list", "references:product_create",
    "references:product_update", "references:product_delete",
    "Товары", "Товар",
)

# Статусы заказов
OrderStatusList, OrderStatusCreate, OrderStatusUpdate, OrderStatusDelete = _ref_view(
    OrderStatus, "references:orderstatus_list", "references:orderstatus_create",
    "references:orderstatus_update", "references:orderstatus_delete",
    "Статусы заказов", "Статус заказа",
)