'use client';

import { memo, useEffect, useState } from 'react';
import { AnimatePresence, motion } from 'motion/react';
import { useTranslations } from 'next-intl';
import { Button } from '@/components/ui/button';
import {
  Bell,
  Info,
  Maximize2,
  Minimize2,
  Moon,
  Search,
  Settings,
  Sun,
} from 'lucide-react';
import { useUser } from '@/contexts/user-context';
import { useBellRing } from '@/contexts/bell-ring-context';
import { useNotificationSettings } from '@/contexts/notification-settings-context';
import { SidebarTrigger } from '@/components/ui/sidebar';
import { useTheme } from 'next-themes';
import { useRouter } from 'next/navigation';
import { SearchDialog } from '@/components/layout/search-dialog';
import { LanguageSwitcher } from '@/components/common/language-switcher';
import { Kbd } from '@/components/ui/kbd';

/**
 * 铃铛按钮组件
 */
const BellButton = memo(function BellButton() {
  const { isRinging } = useBellRing();
  const { showBell, isMounted } = useNotificationSettings();
  const t = useTranslations('layout.header');
  const [isClickAnimating, setIsClickAnimating] = useState(false);

  if (!isMounted) return null;
  if (!showBell) return null;

  const handleClick = () => {
    setIsClickAnimating(true);
    setTimeout(() => setIsClickAnimating(false), 600);
  };

  return (
    <Button
      variant='ghost'
      size='icon'
      className='size-9 text-muted-foreground hover:text-foreground'
      onClick={handleClick}
    >
      <Bell
        className='size-[18px]'
        style={
          isRinging || isClickAnimating
            ? {
                animation: 'var(--animate-bell-ring)',
                transformOrigin: 'top center',
              }
            : undefined
        }
      />
      <span className='sr-only'>{t('notifications')}</span>
    </Button>
  );
});

/**
 * 站点头部组件
 * 用于显示站点头部
 *
 * @example
 * ```tsx
 * <SiteHeader />
 * ```
 */
export function SiteHeader({
  isFullWidth = false,
  onToggleFullWidth,
}: {
  isFullWidth?: boolean;
  onToggleFullWidth?: (value: boolean) => void;
}) {
  const { user } = useUser();
  const { setTheme, resolvedTheme } = useTheme();
  const router = useRouter();
  const t = useTranslations('layout.header');
  const [mounted, setMounted] = useState(false);
  const [searchOpen, setSearchOpen] = useState(false);

  const [metaKey, setMetaKey] = useState('⌘');

  useEffect(() => {
    setMounted(true);
    if (
      typeof navigator !== 'undefined' &&
      !navigator.userAgent?.includes('Mac')
    ) {
      setMetaKey('Ctrl');
    }
  }, []);

  return (
    <div className='flex flex-col w-full'>
      <AppBanner />
      {user?.need_change_password && (
        <div className='bg-amber-500/10 border-b border-amber-500/20 px-4 py-3 text-amber-500 text-xs sm:text-sm flex items-center justify-between gap-4'>
          <div className='flex items-center gap-2'>
            <Info className='size-4 shrink-0 text-amber-500' />
            <span>{t('changePasswordBanner')}</span>
          </div>
          <Button
            variant='outline'
            size='sm'
            className='text-amber-500 hover:text-amber-600 border-amber-500/30 hover:border-amber-500/50 bg-transparent shrink-0 h-8 px-3 text-xs'
            onClick={() => router.push('/settings/profile')}
          >
            {t('changePasswordAction')}
          </Button>
        </div>
      )}
      <header className='flex h-(--header-height) shrink-0 items-center bg-background px-4 md:px-0'>
        <div className='flex w-full items-center justify-between md:hidden'>
          <div className='flex items-center gap-2'>
            <SidebarTrigger />
            <span className='text-sm font-medium truncate max-w-[120px]'>
              {user?.nickname || user?.username || 'Guest'}
            </span>
          </div>
          <div className='flex items-center gap-1'>
            <Button
              variant='ghost'
              size='icon'
              className='size-9 text-muted-foreground hover:text-foreground'
              onClick={() => setSearchOpen(true)}
            >
              <Search className='size-[18px]' />
              <span className='sr-only'>{t('search')}</span>
            </Button>
            <BellButton />
            <LanguageSwitcher />
            <Button
              variant='ghost'
              size='icon'
              className='size-9 text-muted-foreground hover:text-foreground'
              onClick={() => router.push('/settings')}
            >
              <Settings className='size-[18px]' />
              <span className='sr-only'>{t('settings')}</span>
            </Button>
          </div>
        </div>

        <div
          className={`hidden md:flex w-full items-center gap-4 transition-all duration-300 ease-in-out ${!isFullWidth ? 'max-w-[1320px]' : 'max-w-full'} mx-auto md:px-8 lg:px-12`}
        >
          <div
            className='relative w-64 cursor-pointer'
            onClick={() => setSearchOpen(true)}
          >
            <Search className='absolute left-3 top-1/2 size-4 -translate-y-1/2 text-muted-foreground' />
            <div className='flex h-8 items-center rounded-md border border-border/60 bg-muted/70 pl-10 pr-2.5 text-sm text-muted-foreground transition-colors hover:border-border hover:bg-muted'>
              <span>{t('search')}</span>
              <Kbd className='ml-auto gap-0.5 font-mono text-foreground/70'>
                <span>{metaKey}</span>
                <span>K</span>
              </Kbd>
            </div>
          </div>

          <div className='ml-auto flex items-center gap-1'>
            <BellButton />
            <LanguageSwitcher />
            <Button
              variant='ghost'
              size='icon'
              className='size-9 text-muted-foreground hover:text-foreground'
              onClick={() => router.push('/settings')}
            >
              <Settings className='size-[18px]' />
              <span className='sr-only'>{t('settings')}</span>
            </Button>

            <Button
              variant='ghost'
              size='icon'
              className='size-9 text-muted-foreground hover:text-foreground'
              onClick={() => onToggleFullWidth?.(!isFullWidth)}
            >
              {isFullWidth ? (
                <Minimize2 className='size-[18px]' />
              ) : (
                <Maximize2 className='size-[18px]' />
              )}
              <span className='sr-only'>{t('toggleFullWidth')}</span>
            </Button>

            <Button
              variant='ghost'
              size='icon'
              className='size-9 text-muted-foreground hover:text-foreground'
              onClick={() =>
                setTheme(resolvedTheme === 'dark' ? 'light' : 'dark')
              }
            >
              {mounted ? (
                resolvedTheme === 'dark' ? (
                  <Sun className='size-[18px]' />
                ) : (
                  <Moon className='size-[18px]' />
                )
              ) : (
                <Moon className='size-[18px]' />
              )}
              <span className='sr-only'>{t('toggleTheme')}</span>
            </Button>
          </div>
        </div>

        {mounted && (
          <SearchDialog open={searchOpen} onOpenChange={setSearchOpen} />
        )}
      </header>
    </div>
  );
}

function AppBanner() {
  const t = useTranslations('layout.header');
  const [isVisible, setIsVisible] = useState(false);
  const bannerKey = 'ldc-banner-dismissed-script';

  useEffect(() => {
    const dismissed = localStorage.getItem(bannerKey);
    if (!dismissed) {
      setIsVisible(true);
    }
  }, []);

  const handleDismiss = () => {
    localStorage.setItem(bannerKey, 'true');
    setIsVisible(false);
  };

  return (
    <AnimatePresence>
      {isVisible && (
        <motion.div
          initial={{ height: 0, opacity: 0 }}
          animate={{ height: 'auto', opacity: 1 }}
          exit={{ height: 0, opacity: 0 }}
          transition={{ duration: 0.3, ease: 'easeInOut' }}
          className='relative flex w-full items-center justify-center bg-muted/50 overflow-hidden'
        >
          <div className='flex w-full items-center justify-center px-4 pr-10 py-2 text-xs md:text-[13px] font-medium text-muted-foreground'>
            <p className='flex flex-wrap items-center justify-center gap-x-2 text-center'>
              <span className='text-foreground'>{t('bannerTitle')}</span>
              <a
                href='https://example.com'
                target='_blank'
                className='underline underline-offset-4 hover:text-foreground'
              >
                {t('bannerLink')}
              </a>
            </p>
            <Button
              variant='ghost'
              size='icon'
              className='absolute right-2 top-1/2 size-6 -translate-y-1/2 text-muted-foreground hover:text-foreground shrink-0'
              onClick={handleDismiss}
            >
              <span className='sr-only'>{t('dismiss')}</span>
              <svg
                xmlns='http://www.w3.org/2000/svg'
                width='14'
                height='14'
                viewBox='0 0 24 24'
                fill='none'
                stroke='currentColor'
                strokeWidth='2'
                strokeLinecap='round'
                strokeLinejoin='round'
                className='lucide lucide-x'
              >
                <path d='M18 6 6 18' />
                <path d='m6 6 12 12' />
              </svg>
            </Button>
          </div>
        </motion.div>
      )}
    </AnimatePresence>
  );
}