const express = require('express')
const { findTierListById } = require('../db')
const router = express.Router()
const APP_ORIGIN = (process.env.APP_ORIGIN || 'http://localhost:5173').replace(/\/+$/, '')
const DEFAULT_TITLE = 'Tier Maker | 템플릿으로 쉽게 만드는 티어표'
const DEFAULT_DESCRIPTION = '템플릿과 커스텀 이미지로 티어표를 만들고 저장하고 공유하세요.'
const DEFAULT_IMAGE_URL = `${APP_ORIGIN}/og-card.png`
function escapeHtml(value) {
return String(value || '')
.replace(/&/g, '&')
.replace(//g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''')
}
function toAbsoluteUrl(pathname) {
const src = String(pathname || '').trim()
if (!src) return DEFAULT_IMAGE_URL
if (/^https?:\/\//i.test(src)) return src
return `${APP_ORIGIN}${src.startsWith('/') ? src : `/${src}`}`
}
function buildShareHtml({ title, description, imageUrl, shareUrl, appUrl }) {
const safeTitle = escapeHtml(title || DEFAULT_TITLE)
const safeDescription = escapeHtml(description || DEFAULT_DESCRIPTION)
const safeImageUrl = escapeHtml(imageUrl || DEFAULT_IMAGE_URL)
const safeShareUrl = escapeHtml(shareUrl || APP_ORIGIN)
const safeAppUrl = escapeHtml(appUrl || APP_ORIGIN)
return `
${safeTitle}
`
}
router.get('/editor/:topicId/:tierListId', async (req, res) => {
const { topicId, tierListId } = req.params
const appUrl = `${APP_ORIGIN}/editor/${encodeURIComponent(topicId)}/${encodeURIComponent(tierListId)}?preview=1`
const shareUrl = `${APP_ORIGIN}${req.originalUrl || `/share/editor/${encodeURIComponent(topicId)}/${encodeURIComponent(tierListId)}`}`
const tierList = await findTierListById(tierListId)
const isPublicMatch = tierList?.isPublic && (tierList.topicSlug === topicId || tierList.topicId === topicId)
const title = isPublicMatch ? tierList.title : DEFAULT_TITLE
const description = isPublicMatch && tierList.description ? tierList.description : DEFAULT_DESCRIPTION
const imageUrl = isPublicMatch ? toAbsoluteUrl(tierList.thumbnailSrc) : DEFAULT_IMAGE_URL
res.type('html').send(buildShareHtml({ title, description, imageUrl, shareUrl, appUrl }))
})
module.exports = router