import React, { useState } from "react";
import { usePendingUsers } from "@/user-management/userManagement/hooks/usePendingUsersHook";
import { toast } from "sonner";
import { Check, X, Users, Search, RefreshCw } from "lucide-react";
import { useTranslation } from "react-i18next";
import { useErrorHandler } from "@/shared/hooks/useErrorHandler";

const ReviewAllPendingUsers = () => {
  const { t } = useTranslation();
  const { handleError } = useErrorHandler(t);
  const [searchTerm, setSearchTerm] = useState("");

  const { pendingUsers, loadingPendingUsers, approveMutation, rejectMutation } =
    usePendingUsers({ take: 50, skip: 0 });

  const handleApprove = (id: string) => {
    approveMutation.mutate(id, {
      onSuccess: () => toast.success(t("pendingUsers.employeeApprovedSuccess")),
      onError: (error) => handleError(error),
    });
  };

  const handleReject = (id: string) => {
    rejectMutation.mutate(id, {
      onSuccess: () => toast.success(t("pendingUsers.employeeRejectedSuccess")),
      onError: (error) => handleError(error),
    });
  };

  const handleSearch = (e: React.FormEvent) => {
    e.preventDefault();
    // Integrate search with your API if needed
  };

  // Loading skeleton (full width)
  if (loadingPendingUsers) {
    return (
      <div className="p-6 w-full">
        {/* Header skeleton */}
        <div className="flex justify-between items-center mb-6">
          <div className="h-8 w-48 bg-gray-200 rounded animate-pulse"></div>
          <div className="h-6 w-24 bg-gray-200 rounded animate-pulse"></div>
        </div>
        {/* Search bar skeleton */}
        <div className="flex gap-2 mb-6">
          <div className="flex-1 h-10 bg-gray-200 rounded animate-pulse"></div>
          <div className="w-20 h-10 bg-gray-200 rounded animate-pulse"></div>
        </div>
        {/* Table skeleton */}
        <div className="bg-white dark:bg-gray-800 rounded-lg shadow-sm border border-gray-100 dark:border-gray-700 overflow-hidden">
          <table className="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
            <thead className="bg-gray-50 dark:bg-gray-700">
              <tr>
                {[
                  t("pendingUsers.name"),
                  t("pendingUsers.email"),
                  t("pendingUsers.positions"),
                  t("pendingUsers.actions"),
                ].map((h) => (
                  <th
                    key={h}
                    className="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">
                    {h}
                  </th>
                ))}
              </tr>
            </thead>
            <tbody className="divide-y divide-gray-200 dark:divide-gray-700">
              {[...Array(5)].map((_, i) => (
                <tr
                  key={i}
                  className="hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors">
                  <td className="px-6 py-4">
                    <div className="h-4 w-32 bg-gray-200 dark:bg-gray-600 rounded"></div>
                  </td>
                  <td className="px-6 py-4">
                    <div className="h-4 w-40 bg-gray-200 dark:bg-gray-600 rounded"></div>
                  </td>
                  <td className="px-6 py-4">
                    <div className="h-4 w-48 bg-gray-200 dark:bg-gray-600 rounded"></div>
                  </td>
                  <td className="px-6 py-4">
                    <div className="flex gap-2">
                      <div className="h-8 w-20 bg-gray-200 dark:bg-gray-600 rounded"></div>
                      <div className="h-8 w-20 bg-gray-200 dark:bg-gray-600 rounded"></div>
                    </div>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      </div>
    );
  }

  // Empty state
  if (!pendingUsers?.items?.length) {
    return (
      <div className="p-6 w-full">
        <div className="flex justify-between items-center mb-6">
          <h1 className="text-2xl font-bold text-gray-900 flex items-center gap-2">
            <Users className="h-6 w-6 text-primary-600" />
            {t("pendingUsers.title")}
          </h1>
        </div>

        <div className="bg-white rounded-lg shadow-sm border border-gray-100 p-12 text-center mt-6">
          <div className="flex justify-center mb-4">
            <div className="bg-primary-100 p-3 rounded-full">
              <Users className="h-8 w-8 text-primary-600" />
            </div>
          </div>
          <h3 className="text-lg font-medium text-gray-900 mb-2">
            {t("pendingUsers.noPendingApprovals")}
          </h3>
          <p className="text-gray-500 mb-6">
            {t("pendingUsers.allRequestsReviewed")}
          </p>
          <button
            onClick={() => window.location.reload()}
            className="inline-flex items-center px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50">
            <RefreshCw className="h-4 w-4 mr-2" />
            {t("pendingUsers.refresh")}
          </button>
        </div>
      </div>
    );
  }

  return (
    <div className="p-6 w-full">
      {/* Header with count */}
      <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4 mb-6">
        <h1 className="text-2xl font-bold text-gray-900 flex items-center gap-2">
          <Users className="h-6 w-6 text-primary-600" />
          {t("pendingUsers.title")}
        </h1>
        <span className="inline-flex items-center px-3 py-1 rounded-full text-sm font-medium bg-yellow-100 text-yellow-800">
          {pendingUsers.count} {t("pendingUsers.pending")}
        </span>
      </div>

      {/* Table - full width */}
      <div className="bg-white dark:bg-gray-800 rounded-lg shadow-sm border border-gray-100 dark:border-gray-700 overflow-hidden mt-6">
        <div className="overflow-x-auto">
          <table className="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
            <thead className="bg-gray-50 dark:bg-gray-700">
              <tr>
                <th
                  scope="col"
                  className="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
                  {t("pendingUsers.name")}
                </th>
                <th
                  scope="col"
                  className="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
                  {t("pendingUsers.email")}
                </th>
                <th
                  scope="col"
                  className="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
                  {t("pendingUsers.positions")}
                </th>
                <th
                  scope="col"
                  className="px-6 py-3 text-center text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
                  {t("pendingUsers.actions")}
                </th>
              </tr>
            </thead>
            <tbody className="bg-white dark:bg-gray-800 divide-y divide-gray-200 dark:divide-gray-700">
              {pendingUsers.items.map((emp: any) => (
                <tr
                  key={emp.id}
                  className="hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors">
                  <td className="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900 dark:text-gray-100">
                    {emp.name?.en}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500 dark:text-gray-400">
                    {emp.user?.email}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500 dark:text-gray-400">
                    {emp.employeePositions
                      ?.map((pos: any) => pos.position?.name?.en)
                      .join(", ") || "—"}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-sm text-center">
                    <div className="flex justify-center gap-2">
                      <button
                        className="inline-flex items-center px-3 py-1.5 border border-transparent text-xs font-medium rounded-md shadow-sm text-white bg-primary-600 hover:bg-primary-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
                        disabled={approveMutation.isPending}
                        onClick={() => handleApprove(emp.id)}>
                        <Check className="h-3.5 w-3.5 mr-1" />
                        {t("pendingUsers.approve")}
                      </button>
                      <button
                        className="inline-flex items-center px-3 py-1.5 border border-transparent text-xs font-medium rounded-md shadow-sm text-white bg-red-600 hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
                        disabled={rejectMutation.isPending}
                        onClick={() => handleReject(emp.id)}>
                        <X className="h-3.5 w-3.5 mr-1" />
                        {t("pendingUsers.reject")}
                      </button>
                    </div>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      </div>

      {/* Footer note */}
      <p className="text-xs text-gray-400 mt-4 text-center">
        {t("pendingUsers.showingUpTo")}
      </p>
    </div>
  );
};

export default ReviewAllPendingUsers;