"use client";

import React from "react";
import Image from "next/image";
import {
  X,
  CirclePlus,
  FileText,
  FileSpreadsheet,
  FileType,
  FileImage,
} from "lucide-react";

import clsx from "clsx";
import { PropsUploadMultipleFile, UploadFileItem } from "./interface";

export default function UploadMultipleFile({
  images = [],
  setImages,
  isDisableDelete = false,
}: PropsUploadMultipleFile) {
  /* =========================
        CHECK IMAGE FILE
  ========================= */
  const isImageFile = (item: UploadFileItem) => {
    const type = item?.fileType || "";

    return (
      type.startsWith("image/") ||
      /\.(jpg|jpeg|png|gif|webp)$/i.test(item?.path || "")
    );
  };

  /* =========================
        GET FILE ICON
  ========================= */
  const renderFileIcon = (item: UploadFileItem) => {
    const fileName = item?.fileName || item?.path?.split("/").pop() || "";

    const ext = fileName.split(".").pop()?.toLowerCase();

    switch (ext) {
      case "jpg":
      case "jpeg":
      case "png":
      case "gif":
      case "webp":
        return <FileImage size={28} />;

      case "pdf":
        return <FileText size={28} />;

      case "xls":
      case "xlsx":
        return <FileSpreadsheet size={28} />;

      case "doc":
      case "docx":
        return <FileType size={28} />;

      case "ppt":
      case "pptx":
        return <FileType size={28} />;

      case "txt":
        return <FileText size={28} />;

      default:
        return <FileText size={28} />;
    }
  };

  /* =========================
        UPLOAD FILES
  ========================= */
  const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
    const files = event.target.files;

    if (!files) return;

    const newFiles: UploadFileItem[] = Array.from(files).map((file) => ({
      file,
      url: URL.createObjectURL(file),
      fileName: file.name,
      fileType: file.type,
    }));

    setImages((prev) => [...prev, ...newFiles]);
  };

  /* =========================
        DELETE FILE
  ========================= */
  const handleDelete = (index: number) => {
    setImages((prev) => {
      const target = prev[index];

      if (target?.url) {
        URL.revokeObjectURL(target.url);
      }

      return prev.filter((_, i) => i !== index);
    });
  };

  return (
    <div className="flex flex-wrap items-center gap-2">
      {/* FILE LIST */}
      {images?.length > 0 && (
        <div className="flex flex-wrap items-center gap-2">
          {images.map((item, index) => {
            const fileUrl =
              item?.url ||
              (item?.path
                ? `${process.env.NEXT_PUBLIC_IMAGE}${item.path}`
                : "");

            return (
              <div
                key={index}
                className="relative h-[72px] w-[72px] overflow-hidden rounded-md border border-[#99a2b34d]"
              >
                {/* IMAGE */}
                {isImageFile(item) ? (
                  <a
                    href={fileUrl}
                    target="_blank"
                    rel="noreferrer"
                    className="block h-full w-full"
                  >
                    <Image
                      src={fileUrl}
                      alt="file"
                      fill
                      className="object-cover"
                    />
                  </a>
                ) : (
                  <a
                    href={`${process.env.NEXT_PUBLIC_IMAGE}/${fileUrl}`}
                    target="_blank"
                    rel="noreferrer"
                    className="flex h-full w-full flex-col items-center justify-center gap-1 bg-gray-50 p-1"
                  >
                    {renderFileIcon(item)}

                    <span className="line-clamp-2 text-center text-[9px]">
                      {item?.fileName || item?.path?.split("/").pop()}
                    </span>
                  </a>
                )}

                {/* DELETE */}
                {isDisableDelete && !item?.file && item?.img ? null : (
                  <button
                    type="button"
                    onClick={() => handleDelete(index)}
                    className="absolute right-[2px] top-[2px] flex h-[18px] w-[18px] items-center justify-center rounded-sm bg-white transition active:scale-90"
                  >
                    <X size={14} color="#8496AC" />
                  </button>
                )}
              </div>
            );
          })}
        </div>
      )}

      {/* UPLOAD BUTTON */}
      <div className="flex items-center gap-2">
        <label
          className={clsx(
            "flex h-[72px] w-[72px] cursor-pointer items-center justify-center rounded-md border bg-white",
            "border-[#99a2b34d] transition hover:border-gray-400",
          )}
        >
          <CirclePlus color="rgba(198, 201, 206, 1)" />

          <input
            hidden
            multiple
            type="file"
            accept="
              image/*,
              .pdf,
              .doc,
              .docx,
              .xls,
              .xlsx,
              .ppt,
              .pptx,
              .txt
            "
            onClick={(e) => {
              (e.target as HTMLInputElement).value = "";
            }}
            onChange={handleFileChange}
          />
        </label>

        <div className="flex flex-col">
          <p className="text-[14px] font-medium text-[#2f3643]">Upload file</p>

          <p className="text-[12px] font-medium text-[#99a2b3]">
            JPG, PNG, PDF, Word, Excel, PPT (≤ 50MB)
          </p>
        </div>
      </div>
    </div>
  );
}