'use client'

import { useLocale } from 'next-intl'
import { usePathname, useRouter } from '@/i18n/navigation'
import { routing } from '@/i18n/routing'
import { useState, useRef, useEffect } from 'react'
import { useClickOutside } from '@/app/hooks/useClickOutside';

export default function LanguageSwitcher() {
	const locale = useLocale()
	const router = useRouter()
	const pathname = usePathname()
	const [isOpen, setIsOpen] = useState(false)
	const dropdownRef = useRef<HTMLDivElement>(null)

	const switchLanguage = (newLocale: string) => {
		router.replace(pathname, { locale: newLocale })
		setIsOpen(false)
	}

	useClickOutside(dropdownRef, () => {
		setIsOpen(false);
	});

	useEffect(() => {
		const handleEscape = (event: KeyboardEvent) => {
			if (event.key === 'Escape') setIsOpen(false)
		}

		document.addEventListener('keydown', handleEscape)
		return () => document.removeEventListener('keydown', handleEscape)
	}, []);

	return (
		<div className="relative" ref={dropdownRef}>
			<button
				onClick={() => setIsOpen(!isOpen)}
				className="flex items-center justify-between w-full px-4 py-2 text-sm font-medium text-[#6366f1] bg-white border-2 border-[#6366f1] rounded-md shadow-sm hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
			>
				<span className="flex items-center">
					<span className="mr-2">{locale === 'ru' ? 'РУ' : locale.toUpperCase()}</span>
				</span>
				<svg
					className={`w-5 h-5 ml-2 transition-transform ${isOpen ? 'rotate-180' : ''}`}
					xmlns="http://www.w3.org/2000/svg"
					viewBox="0 0 20 20"
					fill="currentColor"
				>
					<path
						fillRule="evenodd"
						d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
						clipRule="evenodd"
					/>
				</svg>
			</button>

			{isOpen && (
				<div className="absolute right-0 z-10 w-full mt-2 origin-top-right bg-white rounded-md shadow-lg border-2 border-[#6366f1] focus:outline-none">
					<ul
						className="py-1"
						role="listbox"
						aria-labelledby="language-selector"
					>
						{routing.locales.map((lang) => (
							<li key={lang} role="option">
								<button
									onClick={() => switchLanguage(lang)}
									className={`flex items-center w-full px-4 py-2 text-sm text-left hover:bg-blue-100 ${locale === lang ? 'bg-blue-50 text-blue-600 font-medium' : 'text-[#6366f1]'
										}`}
									role="menuitem"
								>
									<span className="mr-2 font-medium">
										{lang === 'ru' ? 'РУ' : lang.toUpperCase()}
									</span>
								</button>
							</li>
						))}
					</ul>
				</div>
			)}
		</div>
	)
}