import { ReactNode, useState, useEffect } from 'react';
import { Link, useLocation } from '@remix-run/react';
import { getResponsiveClasses, defaultLayoutConfig, type LayoutConfig } from '~/lib/layout-utils';

interface SidebarProps {
  isCollapsed: boolean;
  onToggle: () => void;
  isMobile: boolean;
  isOpen: boolean;
  onClose: () => void;
  userAuthLevel: number;
}

interface NavigationItem {
  name: string;
  href: string;
  icon: ReactNode;
  authLevel?: number; // Minimum auth level required
}

const navigationItems: NavigationItem[] = [
  {
    name: 'لوحة التحكم',
    href: '/dashboard',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2H5a2 2 0 00-2-2z" />
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 5a2 2 0 012-2h4a2 2 0 012 2v6H8V5z" />
      </svg>
    ),
  },
  {
    name: 'العملاء',
    href: '/customers',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197m13.5-9a2.5 2.5 0 11-5 0 2.5 2.5 0 015 0z" />
      </svg>
    ),
  },
  {
    name: 'المركبات',
    href: '/vehicles',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 17a2 2 0 11-4 0 2 2 0 014 0zM19 17a2 2 0 11-4 0 2 2 0 014 0z" />
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16V6a1 1 0 00-1-1H4a1 1 0 00-1 1v10a1 1 0 001 1h1m8-1a1 1 0 01-1-1V8a1 1 0 011-1h2.586a1 1 0 01.707.293l3.414 3.414a1 1 0 01.293.707V16a1 1 0 01-1 1h-1m-6 0a1 1 0 001 1h4a1 1 0 001-1m-6 0V9a1 1 0 00-1-1v0a1 1 0 00-1 1v8a1 1 0 001 1z" />
      </svg>
    ),
  },
  {
    name: 'زيارات الصيانة',
    href: '/maintenance-visits',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z" />
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
      </svg>
    ),
  },
  {
    name: 'المصروفات',
    href: '/expenses',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 9V7a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2m2 4h10a2 2 0 002-2v-6a2 2 0 00-2-2H9a2 2 0 00-2 2v6a2 2 0 002 2zm7-5a2 2 0 11-4 0 2 2 0 014 0z" />
      </svg>
    ),
    authLevel: 2, // Admin and above
  },
  {
    name: 'التقارير المالية',
    href: '/financial-reports',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
      </svg>
    ),
    authLevel: 2, // Admin and above
  },
  {
    name: 'إدارة المستخدمين',
    href: '/users',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197m13.5-9a2.5 2.5 0 11-5 0 2.5 2.5 0 015 0z" />
      </svg>
    ),
    authLevel: 2, // Admin and above
  },
  {
    name: 'إعدادات النظام',
    href: '/settings',
    icon: (
      <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z" />
        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
      </svg>
    ),
    authLevel: 2, // Admin and above
  },
];

export function Sidebar({ isCollapsed, onToggle, isMobile, isOpen, onClose, userAuthLevel }: SidebarProps) {
  const location = useLocation();

  // Filter navigation items based on user auth level
  const filteredNavItems = navigationItems.filter(item => 
    !item.authLevel || userAuthLevel <= item.authLevel
  );

  // Close sidebar on route change for mobile
  useEffect(() => {
    if (isMobile && isOpen) {
      onClose();
    }
  }, [location.pathname, isMobile, isOpen, onClose]);

  if (isMobile) {
    return (
      <>
        {/* Mobile overlay */}
        {isOpen && (
          <div 
            className="fixed inset-0 bg-black bg-opacity-50 z-40 transition-opacity duration-300"
            onClick={onClose}
          />
        )}

        {/* Mobile Sidebar */}
        <div className={`
          fixed top-0 right-0 h-full w-64 bg-white shadow-lg z-50 transform transition-transform duration-300 ease-in-out
          ${isOpen ? 'translate-x-0' : 'translate-x-full'}
        `} dir="rtl">
          {/* Mobile Header */}
          <div className="flex items-center justify-between h-16 px-4 border-b border-gray-200">
            <div className="flex items-center">
              <div className="h-8 w-8 bg-blue-600 rounded-full flex items-center justify-center">
                <svg className="h-5 w-5 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
                </svg>
              </div>
              <h1 className="ml-3 text-lg font-semibold text-gray-900">نظام الصيانة</h1>
            </div>
            <button
              onClick={onClose}
              className="p-2 rounded-md text-gray-400 hover:text-gray-600 hover:bg-gray-100"
            >
              <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
              </svg>
            </button>
          </div>

          {/* Mobile Navigation */}
          <nav className="mt-5 px-2 flex-1 overflow-y-auto">
            <div className="space-y-1">
              {filteredNavItems.map((item) => {
                const isActive = location.pathname === item.href;
                return (
                  <Link
                    key={item.name}
                    to={item.href}
                    className={`
                      group flex items-center px-3 py-2 text-sm font-medium rounded-md transition-colors duration-150 relative
                      ${isActive ? 'bg-blue-100 text-blue-900' : 'text-gray-600 hover:bg-gray-50 hover:text-gray-900'}
                    `}
                  >
                    {isActive && <div className="absolute right-0 top-0 bottom-0 w-1 bg-blue-600 rounded-l-md"></div>}
                    <div className={`flex-shrink-0 ${isActive ? 'text-blue-600' : 'text-gray-400 group-hover:text-gray-500'}`}>
                      {item.icon}
                    </div>
                    <span className="ml-3">{item.name}</span>
                  </Link>
                );
              })}
            </div>
          </nav>
        </div>
      </>
    );
  }

  // Desktop Sidebar
  return (
    <div className={`
      fixed top-0 right-0 h-full bg-white shadow-lg z-40 transition-all duration-300 ease-in-out
      ${isCollapsed ? 'w-16' : 'w-64'}
    `} dir="rtl">
      {/* Desktop Header */}
      <div className="flex items-center justify-between h-16 px-4 border-b border-gray-200">
        <div className="flex items-center flex-1">
          <div className="h-8 w-8 bg-blue-600 rounded-full flex items-center justify-center">
            <svg className="h-5 w-5 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
            </svg>
          </div>
          {!isCollapsed && (
            <h1 className="ml-3 text-lg font-semibold text-gray-900">نظام الصيانة</h1>
          )}
        </div>
        
        <button
          onClick={onToggle}
          className="p-1 rounded-md text-gray-400 hover:text-gray-600 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-blue-500"
        >
          <svg
            className={`h-4 w-4 transform transition-transform duration-200 ${isCollapsed ? 'rotate-180' : ''}`}
            fill="none"
            stroke="currentColor"
            viewBox="0 0 24 24"
          >
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
          </svg>
        </button>
      </div>

      {/* Desktop Navigation */}
      <nav className="mt-5 px-2 flex-1 overflow-y-auto">
        <div className="space-y-1">
          {filteredNavItems.map((item) => {
            const isActive = location.pathname === item.href;
            return (
              <Link
                key={item.name}
                to={item.href}
                className={`
                  group flex items-center px-3 py-2 text-sm font-medium rounded-md transition-colors duration-150 relative
                  ${isActive ? 'bg-blue-100 text-blue-900' : 'text-gray-600 hover:bg-gray-50 hover:text-gray-900'}
                  ${isCollapsed ? 'justify-center' : ''}
                `}
                title={isCollapsed ? item.name : undefined}
              >
                {isActive && <div className="absolute right-0 top-0 bottom-0 w-1 bg-blue-600 rounded-l-md"></div>}
                <div className={`flex-shrink-0 ${isActive ? 'text-blue-600' : 'text-gray-400 group-hover:text-gray-500'}`}>
                  {item.icon}
                </div>
                {!isCollapsed && (
                  <span className="ml-3 truncate">{item.name}</span>
                )}
              </Link>
            );
          })}
        </div>
      </nav>

      {/* Desktop Footer */}
      {!isCollapsed && (
        <div className="absolute bottom-0 left-0 right-0 p-4 border-t border-gray-200">
          <div className="text-xs text-gray-500 text-center">
            نظام إدارة صيانة السيارات
          </div>
        </div>
      )}
    </div>
  );
}