package handlers

import (
	"log"
	"net/http"

	"shop/internal/models"
	"shop/internal/repository"
)

type HomeHandler struct {
	products *repository.ProductRepository
	pages    *Pages
}

func NewHomeHandler(products *repository.ProductRepository, pages *Pages) *HomeHandler {
	return &HomeHandler{products: products, pages: pages}
}

type homePageData struct {
	Layout
	Products   []models.Product
	Categories []string
	TotalItems int
}

func (h *HomeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}

	ctx := r.Context()
	featured, err := h.products.Featured(ctx, 8)
	if err != nil {
		log.Printf("featured products: %v", err)
		http.Error(w, "Ошибка загрузки каталога", http.StatusInternalServerError)
		return
	}

	categories, err := h.products.Categories(ctx)
	if err != nil {
		log.Printf("categories: %v", err)
		categories = nil
	}

	total, err := h.products.Count(ctx)
	if err != nil {
		log.Printf("count: %v", err)
		total = 0
	}

	data := homePageData{
		Layout:     h.pages.layout(r, "Главная", "home"),
		Products:   featured,
		Categories: categories,
		TotalItems: total,
	}
	data.Success = flashMsg(r, "ok")

	h.pages.render(w, "home.html", data)
}