package handlers

import (
	"net/http"

	"shop.tonybtw.com/internal/lib"
	"shop.tonybtw.com/internal/models"
	"shop.tonybtw.com/internal/views"
)

type Shop_Handler struct {
	ctx *lib.App_Context
}

func New_Shop_Handler(ctx *lib.App_Context) *Shop_Handler {
	return &Shop_Handler{ctx: ctx}
}

func (h *Shop_Handler) Show_Home(w http.ResponseWriter, r *http.Request) {
	products, err := models.Get_All_Products(h.ctx.DB)
	if err != nil {
		http.Error(w, "Failed to load products", http.StatusInternalServerError)
		return
	}

	session_id := lib.Get_Session_ID(r)
	cart_json := h.ctx.Session_Store.Get_Cart(session_id)
	cart, _ := models.Parse_Cart(cart_json)
	cart_count := models.Count_Cart_Items(cart)

	views.Home(products, cart_count).Render(r.Context(), w)
}

func (h *Shop_Handler) Show_Product(w http.ResponseWriter, r *http.Request, slug string) {
	product, err := models.Get_Product_By_Slug(h.ctx.DB, slug)
	if err != nil {
		http.Error(w, "Database error", http.StatusInternalServerError)
		return
	}

	if product == nil {
		session_id := lib.Get_Session_ID(r)
		cart_json := h.ctx.Session_Store.Get_Cart(session_id)
		cart, _ := models.Parse_Cart(cart_json)
		cart_count := models.Count_Cart_Items(cart)
		views.Error("Product not found", cart_count).Render(r.Context(), w)
		w.WriteHeader(http.StatusNotFound)
		return
	}

	variants, err := models.Get_Product_Variants(h.ctx.DB, product.ID)
	if err != nil {
		http.Error(w, "Failed to load variants: "+err.Error(), http.StatusInternalServerError)
		return
	}

	images, err := models.Get_Product_Images(h.ctx.DB, product.ID)
	if err != nil {
		http.Error(w, "Failed to load images: "+err.Error(), http.StatusInternalServerError)
		return
	}

	session_id := lib.Get_Session_ID(r)
	cart_json := h.ctx.Session_Store.Get_Cart(session_id)
	cart, _ := models.Parse_Cart(cart_json)
	cart_count := models.Count_Cart_Items(cart)

	views.Product(*product, variants, images, cart_count).Render(r.Context(), w)
}