'use client'
import { useEffect, useRef, useState } from 'react'
import { BellIcon as BellIconOutline } from '@heroicons/react/24/outline'
import { BellIcon as BellIconSolid } from '@heroicons/react/24/solid'
import useSWR from 'swr'
import classNames from '@/utils/classnames'
import { useAppContext } from '@/context/app-context'
import { fetchUnreadCount } from '@/service/notifications'
import NotificationPanel from './notification-panel'

type NotificationsNavProps = {
  className?: string
}

const NotificationsNav = ({ className }: NotificationsNavProps) => {
  const [isOpen, setIsOpen] = useState(false)
  const panelRef = useRef<HTMLDivElement>(null)
  const buttonRef = useRef<HTMLDivElement>(null)
  const { userProfile } = useAppContext()

  // 调试：输出当前用户信息
  useEffect(() => {
    if (userProfile?.id) {
      console.log('[NOTIFY] Current user:', {
        id: userProfile.id,
        name: userProfile.name,
        email: userProfile.email,
      })
    }
  }, [userProfile])

  // 获取未读通知数量
  const { data: unreadData, mutate: mutateUnreadCount } = useSWR(
    '/datasets/notifications/unread-count',
    fetchUnreadCount,
    {
      refreshInterval: 30000, // 每30秒刷新一次
      onSuccess: (data) => {
        console.log('[NOTIFY] Unread count data:', data)
      },
      onError: (error) => {
        console.error('[NOTIFY] Failed to fetch unread count:', error)
      },
    },
  )

  const unreadCount = unreadData?.unread_count || 0

  // 点击外部关闭面板
  useEffect(() => {
    const handleClickOutside = (event: MouseEvent) => {
      if (
        panelRef.current
        && !panelRef.current.contains(event.target as Node)
        && buttonRef.current
        && !buttonRef.current.contains(event.target as Node)
      )
        setIsOpen(false)
    }

    if (isOpen) {
      document.addEventListener('mousedown', handleClickOutside)
      return () => {
        document.removeEventListener('mousedown', handleClickOutside)
      }
    }
  }, [isOpen])

  const handleToggle = () => {
    setIsOpen(!isOpen)
  }

  const handleNotificationRead = () => {
    // 重新获取未读数量
    mutateUnreadCount()
  }

  return (
    <div className="relative">
      <div
        ref={buttonRef}
        onClick={handleToggle}
        className={classNames(
          className,
          'group cursor-pointer',
        )}
      >
        <div
          className={classNames(
            'system-sm-medium relative flex h-8 w-8 flex-row items-center justify-center rounded-xl border border-transparent p-1.5',
            isOpen && 'border-components-main-nav-nav-button-border bg-components-main-nav-nav-button-bg-active text-components-main-nav-nav-button-text shadow-md',
            !isOpen && 'text-text-tertiary hover:bg-state-base-hover hover:text-text-secondary',
          )}
        >
          {/* 未读数量徽章 */}
          {unreadCount > 0 && (
            <div className="absolute right-[-4px] top-[-4px] flex h-5 min-w-[20px] items-center justify-center rounded-full bg-util-colors-red-red-600 px-1 text-[11px] font-semibold text-white">
              {unreadCount > 99 ? '99+' : unreadCount}
            </div>
          )}

          {/* 铃铛图标 */}
          {isOpen
            ? <BellIconSolid className="h-4 w-4" />
            : <BellIconOutline className="h-4 w-4" />}
        </div>
      </div>

      {/* 通知面板 */}
      {isOpen && (
        <div
          ref={panelRef}
          className="absolute right-0 top-[calc(100%+8px)] z-[1200]"
        >
          <NotificationPanel
            onClose={() => setIsOpen(false)}
            onNotificationRead={handleNotificationRead}
          />
        </div>
      )}
    </div>
  )
}

export default NotificationsNav