"use client";

import { useEffect, useState } from "react";
import Image from "next/image";
import Cookies from "js-cookie";
import Swal from "sweetalert2";
import withReactContent from "sweetalert2-react-content";

import { getPromotionById, updatePromotion } from "@/service/promotion";
import { Button } from "@/components/ui/button";
import { loading, success, error } from "@/config/swal";

type PromoEditDialogProps = {
  promoId: number | null;
  open: boolean;
  onOpenChange: (open: boolean) => void;
  onSuccess?: () => void;
};

export default function PromoEditDialog({
  promoId,
  open,
  onOpenChange,
  onSuccess,
}: PromoEditDialogProps) {
  const [loadingData, setLoadingData] = useState(false);

  // 🔹 FORM STATE
  const [title, setTitle] = useState("");
  const [thumbnailUrl, setThumbnailUrl] = useState<string | null>(null);
  const [thumbnailFile, setThumbnailFile] = useState<File | null>(null);

  const MySwal = withReactContent(Swal);

  /* =========================
   * Fetch promo detail
   ========================= */
  useEffect(() => {
    if (!promoId || !open) return;

    async function fetchPromo() {
      try {
        setLoadingData(true);
        const res = await getPromotionById(promoId);
        const data = res?.data?.data;

        setTitle(data?.title || "");
        setThumbnailUrl(data?.thumbnail_url || null);
      } catch (e) {
        console.error("FETCH PROMO ERROR:", e);
      } finally {
        setLoadingData(false);
      }
    }

    fetchPromo();
  }, [promoId, open]);

  if (!open) return null;

  /* =========================
   * Handlers
   ========================= */
  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (!file) return;

    setThumbnailFile(file);
    setThumbnailUrl(URL.createObjectURL(file));
  };

  const handleSubmit = async () => {
    if (!promoId) return;

    const formData = new FormData();
    formData.append("title", title);

    if (thumbnailFile) {
      formData.append("file", thumbnailFile);
    }

    loading();
    const res = await updatePromotion(formData, promoId);

    if (res?.error) {
      error(res.message || "Gagal update promo");
      return;
    }

    success("Promo berhasil diperbarui");
    onOpenChange(false);
    onSuccess?.();
  };

  /* =========================
   * Render
   ========================= */
  return (
    <div
      className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 p-4"
      onClick={() => onOpenChange(false)}
    >
      <div
        className="bg-white rounded-2xl shadow-xl max-w-lg w-full overflow-hidden"
        onClick={(e) => e.stopPropagation()}
      >
        {/* HEADER */}
        <div className="bg-gradient-to-br from-[#1F6779] to-[#0F6C75] text-white px-6 py-5 relative">
          <button
            onClick={() => onOpenChange(false)}
            className="absolute top-4 right-4 text-xl"
          >
            ✕
          </button>
          <h2 className="text-lg font-semibold">Edit Promo</h2>
        </div>

        {/* BODY */}
        <div className="p-6 space-y-5">
          {loadingData ? (
            <p>Memuat data...</p>
          ) : (
            <>
              {/* TITLE */}
              <div>
                <label className="block text-sm font-medium text-gray-600 mb-1">
                  Judul Promo
                </label>
                <input
                  value={title}
                  onChange={(e) => setTitle(e.target.value)}
                  className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-[#0F6C75]"
                  placeholder="Judul promo"
                />
              </div>

              {/* THUMBNAIL */}
              <div>
                <label className="block text-sm font-medium text-gray-600 mb-2">
                  Thumbnail
                </label>

                {thumbnailUrl && (
                  <div className="w-32 h-32 mb-3 rounded-lg overflow-hidden border">
                    <img
                      src={thumbnailUrl}
                      alt="Thumbnail"
                      className="w-32 h-32 object-cover rounded-lg border"
                    />
                  </div>
                )}

                <input
                  type="file"
                  accept="image/*"
                  onChange={handleFileChange}
                  className="bg-[#0F6C75] text-white rounded-full px-2 w-[230px]"
                />
              </div>
            </>
          )}
        </div>

        {/* FOOTER */}
        <div className="flex justify-end gap-3 px-6 py-4 border-t bg-[#F2F7FA]">
          <Button variant="secondary" onClick={() => onOpenChange(false)}>
            Batal
          </Button>

          <Button
            className="bg-[#1F6779] hover:bg-[#0F6C75] text-white"
            onClick={handleSubmit}
            disabled={loadingData}
          >
            Simpan Perubahan
          </Button>
        </div>
      </div>
    </div>
  );
}