package handlers

import (
	"log"
	"net/http"
	"strconv"

	"shop/internal/models"
	"shop/internal/orderstatus"
)

type adminOrdersData struct {
	Title      string
	Email      string
	Orders     []models.Order
	StatusList []orderStatusOption
	Success    string
}

type orderStatusOption struct {
	Code  string
	Label string
}

func statusOptions() []orderStatusOption {
	var list []orderStatusOption
	for _, code := range orderstatus.AllCodes {
		list = append(list, orderStatusOption{Code: code, Label: orderstatus.Label(code)})
	}
	return list
}

func (h *AdminHandler) OrderList(w http.ResponseWriter, r *http.Request) {
	email, ok := h.requireAuth(w, r)
	if !ok {
		return
	}

	orders, err := h.orders.All(r.Context(), 200)
	if err != nil {
		log.Printf("admin orders: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
		return
	}

	success := r.URL.Query().Get("ok")
	msg := ""
	if success == "1" {
		msg = "Статус заказа обновлён"
	}

	h.render(w, "admin_orders.html", adminOrdersData{
		Title:      "Заказы",
		Email:      email,
		Orders:     orders,
		StatusList: statusOptions(),
		Success:    msg,
	})
}

func (h *AdminHandler) OrderUpdateStatus(w http.ResponseWriter, r *http.Request) {
	if _, ok := h.requireAuth(w, r); !ok {
		return
	}

	if err := r.ParseForm(); err != nil {
		http.Error(w, "Bad Request", http.StatusBadRequest)
		return
	}

	id, err := strconv.Atoi(r.PathValue("id"))
	if err != nil {
		http.NotFound(w, r)
		return
	}

	status := r.FormValue("status")
	if !orderstatus.Valid(status) {
		http.Redirect(w, r, "/admin/orders", http.StatusSeeOther)
		return
	}

	if err := h.orders.UpdateStatus(r.Context(), id, status); err != nil {
		log.Printf("order status: %v", err)
	}

	http.Redirect(w, r, "/admin/orders?ok=1", http.StatusSeeOther)
}