package restricted

import (
	"strconv"

	"git.ma-al.com/goc_daniel/b2b/app/model"
	"git.ma-al.com/goc_daniel/b2b/app/service/orderService"
	"git.ma-al.com/goc_daniel/b2b/app/utils/i18n"
	"git.ma-al.com/goc_daniel/b2b/app/utils/localeExtractor"
	"git.ma-al.com/goc_daniel/b2b/app/utils/logger"
	"git.ma-al.com/goc_daniel/b2b/app/utils/nullable"
	"git.ma-al.com/goc_daniel/b2b/app/utils/query/query_params"
	"git.ma-al.com/goc_daniel/b2b/app/utils/response"
	"git.ma-al.com/goc_daniel/b2b/app/utils/responseErrors"
	"github.com/gofiber/fiber/v3"
)

type OrdersHandler struct {
	ordersService *orderService.OrderService
}

func NewOrdersHandler() *OrdersHandler {
	ordersService := orderService.New()
	return &OrdersHandler{
		ordersService: ordersService,
	}
}

func OrdersHandlerRoutes(r fiber.Router) fiber.Router {
	handler := NewOrdersHandler()

	r.Get("/list", handler.ListOrders)
	r.Post("/place-new-order", handler.PlaceNewOrder)
	r.Post("/change-order-address", handler.ChangeOrderAddress)
	r.Get("/change-order-status", handler.ChangeOrderStatus)

	return r
}

// when a user (not admin) wants to list orders, we automatically append filter to only view his orders.
// we base permissions and user based on target user only.
func (h *OrdersHandler) ListOrders(c fiber.Ctx) error {
	user, ok := localeExtractor.GetCustomer(c)
	if !ok {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	paging, filters, err := query_params.ParseFilters[model.CustomerOrder](c, columnMappingListOrders)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(err)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, err)))
	}

	list, err := h.ordersService.Find(user, paging, filters)
	if err != nil {

		logger.Error("failed to list orders",
			"handler", "OrdersHandler.ListOrders",

			"error", err.Error(),
		)
		return c.Status(responseErrors.GetErrorStatus(err)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, err)))
	}

	return c.JSON(response.Make(&list.Items, int(list.Count), i18n.T_(c, response.Message_OK)))
}

var columnMappingListOrders map[string]string = map[string]string{
	"order_id":   "b2b_customer_orders.order_id",
	"user_id":    "b2b_customer_orders.user_id",
	"name":       "b2b_customer_orders.name",
	"country_id": "b2b_customer_orders.country_id",
	"status":     "b2b_customer_orders.status",
}

func (h *OrdersHandler) PlaceNewOrder(c fiber.Ctx) error {
	userID, ok := localeExtractor.GetUserID(c)
	if !ok {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	cart_id_attribute := c.Query("cart_id")
	cart_id, err := strconv.Atoi(cart_id_attribute)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrBadAttribute)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrBadAttribute)))
	}

	country_id_attribute := c.Query("country_id")
	country_id, err := strconv.Atoi(country_id_attribute)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrBadAttribute)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrBadAttribute)))
	}

	address_info := string(c.Body())
	if address_info == "" {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	name := c.Query("name")

	err = h.ordersService.PlaceNewOrder(userID, uint(cart_id), name, uint(country_id), address_info)
	if err != nil {

		logger.Error("failed to place order",
			"handler", "OrdersHandler.PlaceNewOrder",

			"user_id", userID,
			"error", err.Error(),
		)
		return c.Status(responseErrors.GetErrorStatus(err)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, err)))
	}

	return c.JSON(response.Make(nullable.GetNil(""), 0, i18n.T_(c, response.Message_OK)))
}

// we base permissions and user based on target user only.
func (h *OrdersHandler) ChangeOrderAddress(c fiber.Ctx) error {
	user, ok := localeExtractor.GetCustomer(c)
	if !ok {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	order_id_attribute := c.Query("order_id")
	order_id, err := strconv.Atoi(order_id_attribute)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrBadAttribute)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrBadAttribute)))
	}

	country_id_attribute := c.Query("country_id")
	country_id, err := strconv.Atoi(country_id_attribute)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrBadAttribute)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrBadAttribute)))
	}

	address_info := string(c.Body())
	if address_info == "" {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	err = h.ordersService.ChangeOrderAddress(user, uint(order_id), uint(country_id), address_info)
	if err != nil {

		logger.Error("failed to change order address",
			"handler", "OrdersHandler.ChangeOrderAddress",

			"order_id", order_id,
			"error", err.Error(),
		)
		return c.Status(responseErrors.GetErrorStatus(err)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, err)))
	}

	return c.JSON(response.Make(nullable.GetNil(""), 0, i18n.T_(c, response.Message_OK)))
}

// we base permissions and user based on target user only.
// TODO: well, permissions and all that.
func (h *OrdersHandler) ChangeOrderStatus(c fiber.Ctx) error {
	user, ok := localeExtractor.GetCustomer(c)
	if !ok {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrInvalidBody)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrInvalidBody)))
	}

	order_id_attribute := c.Query("order_id")
	order_id, err := strconv.Atoi(order_id_attribute)
	if err != nil {
		return c.Status(responseErrors.GetErrorStatus(responseErrors.ErrBadAttribute)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, responseErrors.ErrBadAttribute)))
	}

	status := c.Query("status")

	err = h.ordersService.ChangeOrderStatus(user, uint(order_id), status)
	if err != nil {

		logger.Error("failed to change order status",
			"handler", "OrdersHandler.ChangeOrderStatus",

			"order_id", order_id,
			"error", err.Error(),
		)
		return c.Status(responseErrors.GetErrorStatus(err)).
			JSON(response.Make(nullable.GetNil(""), 0, responseErrors.GetErrorCode(c, err)))
	}

	return c.JSON(response.Make(nullable.GetNil(""), 0, i18n.T_(c, response.Message_OK)))
}