export default defineEventHandler((event) => {
  const pages = [
    {
      url: '/', priority: '1.0', changefreq: 'weekly',
      images: [{ loc: '/images/team/hero-grassland.jpg', title: '呼伦贝尔草原风光 - 呼籁旅行' }],
    },
    {
      url: '/faq', priority: '0.95', changefreq: 'weekly',
      images: [],
    },
    {
      url: '/products', priority: '0.9', changefreq: 'weekly',
      images: [{ loc: '/images/mascot/xiaomengma.png', title: '小蒙马夏令营IP形象' }],
    },
    {
      url: '/about', priority: '0.85', changefreq: 'monthly',
      images: [
        { loc: '/images/team/hero-family.jpg', title: '呼伦贝尔家庭游合影' },
        { loc: '/images/team/guide-group.jpg', title: '呼籁旅行领队团队合影' },
        { loc: '/images/mascot/mascot-front.png', title: '呼籁旅行吉祥物' },
      ],
    },
    {
      url: '/reviews', priority: '0.8', changefreq: 'weekly',
      images: [],
    },
    {
      url: '/contact', priority: '0.8', changefreq: 'monthly',
      images: [{ loc: '/images/contact/qrcode-wechat.jpg', title: '呼籁旅行微信客服二维码' }],
    },
    {
      url: '/guides', priority: '0.8', changefreq: 'monthly',
      images: [],
    },
    {
      url: '/summer-camp', priority: '0.85', changefreq: 'monthly',
      images: [
        { loc: '/images/summer-camp/river-banner.jpg', title: '小蒙马夏令营河畔活动' },
        { loc: '/images/summer-camp/grassland-group.jpg', title: '草原亲子夏令营合影' },
        { loc: '/images/summer-camp/birch-group.jpg', title: '白桦林研学活动' },
        { loc: '/images/summer-camp/camp-graduation.jpg', title: '夏令营结营仪式' },
      ],
    },
  ]

  const today = new Date().toISOString().split('T')[0]
  const base = 'https://1814.love'

  const xml = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
        xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
${pages
  .map(
    (p) => `  <url>
    <loc>${base}${p.url}</loc>
    <lastmod>${today}</lastmod>
    <changefreq>${p.changefreq}</changefreq>
    <priority>${p.priority}</priority>${p.images.map(img => `
    <image:image>
      <image:loc>${base}${img.loc}</image:loc>
      <image:title>${img.title}</image:title>
    </image:image>`).join('')}
  </url>`
  )
  .join('\n')}
</urlset>`

  setResponseHeader(event, 'content-type', 'application/xml')
  return xml
})