package server

import (
	"fmt"

	"github.com/gofiber/fiber/v2"
	"github.com/google/uuid"

	def "git.ego.cloudns.be/egommerce/api-entities/http"

	"git.ego.cloudns.be/egommerce/catalog-service/internal/service"
	"git.ego.cloudns.be/egommerce/catalog-service/internal/ui"
)

func (s *Server) GetProductListHandler(c *fiber.Ctx) error {
	reqID, _ := s.GetRequestID(c)
	req := new(def.GetProductListRequest)
	catalogSrv := service.NewCatalogService(s.GetDatabase(), s.GetEventBus(), s.GetLogger())
	res, err := ui.GetProductList(catalogSrv, req.CategoryID, reqID)
	if err != nil {
		return err
	}

	return c.JSON(res)
}

func (s *Server) AddProductToBasketHandler(c *fiber.Ctx) error {
	reqID, _ := s.GetRequestID(c)
	req := new(def.AddProductToBasketRequest)
	if err := c.BodyParser(req); err != nil {
		return s.Error(c, 400, err.Error())
	}

	basketID := prepareBasket(c)
	qty := 1
	if req.Quantity != 0 {
		qty = req.Quantity
	}

	catalogSrv := service.NewCatalogService(s.GetDatabase(), s.GetEventBus(), s.GetLogger())
	res, err := ui.AddProductToBasket(catalogSrv, req.ProductID, qty, basketID, reqID)
	if err != nil {
		s.GetLogger().Log("AddProductToBasketHandler error: ", err)
		if res.ProductID == 0 {
			return s.Error(c, 404, fmt.Sprintf("Product #%d not exists", req.ProductID))
		}
		return s.Error(c, 400, "Failed to add product to basket")
	}

	return c.JSON(res)
}

func (s *Server) RemoveProductFromBasketHandler(c *fiber.Ctx) error {
	reqID, _ := s.GetRequestID(c)
	req := new(def.RemoveProductFromBasketRequest)
	if err := c.BodyParser(req); err != nil {
		return s.Error(c, 400, err.Error())
	}

	basketID := prepareBasket(c)
	qty := 1
	if req.Quantity != 0 {
		qty = req.Quantity
	}

	catalogSrv := service.NewCatalogService(s.GetDatabase(), s.GetEventBus(), s.GetLogger())
	res, err := ui.RemoveProductFromBasket(catalogSrv, req.ProductID, qty, basketID, reqID)
	if err != nil {
		s.GetLogger().Log("RemoveProductFromBasketHandler error: ", err)
		return s.Error(c, 400, "Failed to remove product from basket")
	}

	return c.JSON(res)
}

func prepareBasket(c *fiber.Ctx) string {
	basketID := c.Cookies(service.BasketIdCookieName)
	if len(basketID) == 0 {
		basketID = uuid.New().String()
		c.Cookie(&fiber.Cookie{Name: service.BasketIdCookieName, Value: basketID})
	}

	return basketID
}