Merge branch 'priyanshu_bharti-feature/improve-og-invite-preview' into dev

Dockerfile

@@ -21,12 +21,16 @@ ENV VITE_BUILD_HASH=${VITE_BUILD_HASH}
 
 ENV NODE_OPTIONS=--max_old_space_size=16384
 RUN pnpm run build
+RUN pnpm prune --prod
 
-FROM node:20-alpine
+FROM node:20-bookworm-slim
 
 WORKDIR /app
 
-# Copy only the built output - no source, no .env, no dev deps
+# Copy production runtime only
+COPY --from=builder /app/package.json ./package.json
+COPY --from=builder /app/node_modules ./node_modules
 COPY --from=builder /app/build ./build
+COPY --from=builder /app/server.js ./server.js
 
-CMD ["npx", "serve", "-s", "build"]
+CMD ["node", "server.js"]

README.md

@@ -31,7 +31,7 @@ To run your own Flotilla, it's as simple as:
 ```sh
 pnpm install
 pnpm run build
-npx serve -s build
+node server.js
 ```
 
 Or, if you prefer to use a container:

package.json

@@ -1,9 +1,10 @@
 {
   "name": "flotilla",
-  "version": "1.7.2",
+  "version": "1.7.4",
   "private": true,
   "scripts": {
     "dev": "vite dev",
+    "start": "node server.js",
     "build": "./build.sh",
     "release:android": "./build.sh && cap build android --androidreleasetype APK --signing-type apksigner",
     "tauri:dev": "tauri dev",
@@ -22,6 +23,7 @@
     "@eslint/js": "^9.39.2",
     "@sveltejs/kit": "^2.50.1",
     "@sveltejs/vite-plugin-svelte": "^4.0.4",
+    "@tailwindcss/postcss": "^4.2.2",
     "@tauri-apps/cli": "^2.9.6",
     "@types/eslint": "^9.6.1",
     "autoprefixer": "^10.4.23",
@@ -35,7 +37,7 @@
     "prettier-plugin-svelte": "^3.4.1",
     "svelte": "^5.48.0",
     "svelte-check": "^4.3.5",
-    "tailwindcss": "^3.4.19",
+    "tailwindcss": "^4.2.2",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.53.1",
     "vite": "^5.4.21"
@@ -47,47 +49,53 @@
     "@capacitor/android": "^8.0.1",
     "@capacitor/app": "^8.0.0",
     "@capacitor/cli": "^8.0.1",
+    "@capacitor/clipboard": "^8.0.1",
     "@capacitor/core": "^8.0.1",
     "@capacitor/filesystem": "^8.1.0",
     "@capacitor/ios": "^8.0.1",
     "@capacitor/keyboard": "^8.0.0",
     "@capacitor/preferences": "^8.0.0",
     "@capacitor/push-notifications": "^8.0.0",
+    "@capacitor/share": "^8.0.1",
     "@capawesome/capacitor-android-dark-mode-support": "^8.0.0",
     "@capawesome/capacitor-badge": "^8.0.0",
     "@getalby/lightning-tools": "^6.1.0",
     "@getalby/sdk": "^5.1.2",
+    "@hono/node-server": "^1.19.14",
     "@noble/curves": "^1.9.7",
-    "@pomade/core": "^0.2.2",
+    "@pomade/core": "^0.2.3",
     "@poppanator/sveltekit-svg": "^4.2.1",
     "@sveltejs/adapter-static": "^3.0.10",
     "@tiptap/core": "^2.27.2",
+    "@tiptap/pm": "^2.27.2",
     "@types/qrcode": "^1.5.6",
     "@types/throttle-debounce": "^5.0.2",
     "@vite-pwa/assets-generator": "^0.2.6",
     "@vite-pwa/sveltekit": "^0.6.8",
-    "@welshman/app": "^0.8.12",
+    "@welshman/app": "^0.8.13",
-    "@welshman/content": "^0.8.12",
+    "@welshman/content": "^0.8.13",
-    "@welshman/editor": "^0.8.12",
+    "@welshman/editor": "^0.8.13",
-    "@welshman/feeds": "^0.8.12",
+    "@welshman/feeds": "^0.8.13",
-    "@welshman/lib": "^0.8.12",
+    "@welshman/lib": "^0.8.13",
-    "@welshman/net": "^0.8.12",
+    "@welshman/net": "^0.8.13",
-    "@welshman/router": "^0.8.12",
+    "@welshman/router": "^0.8.13",
-    "@welshman/signer": "^0.8.12",
+    "@welshman/signer": "^0.8.13",
-    "@welshman/store": "^0.8.12",
+    "@welshman/store": "^0.8.13",
-    "@welshman/util": "^0.8.12",
+    "@welshman/util": "^0.8.13",
+    "cheerio": "^1.2.0",
     "compressorjs-next": "^1.1.2",
-    "daisyui": "^4.12.24",
+    "daisyui": "^5.5.19",
     "date-picker-svelte": "^2.17.0",
     "dotenv": "^16.6.1",
     "emoji-picker-element": "^1.28.1",
     "fuse.js": "^7.1.0",
+    "hono": "^4.12.14",
     "husky": "^9.1.7",
     "idb": "^8.0.3",
     "livekit-client": "^2.17.2",
     "nostr-signer-capacitor-plugin": "github:coracle-social/nostr-signer-capacitor-plugin#main",
     "nostr-tools": "^2.19.4",
-    "prettier-plugin-tailwindcss": "^0.6.14",
+    "prettier-plugin-tailwindcss": "^0.7.2",
     "qr-scanner": "^1.4.2",
     "qrcode": "^1.5.4",
     "throttle-debounce": "^5.0.2",
@@ -104,5 +112,6 @@
     "overrides": {
       "sharp": "0.35.0-rc.0"
     }
-  }
+  },
+  "packageManager": "pnpm@10.33.0+sha512.10568bb4a6afb58c9eb3630da90cc9516417abebd3fabbe6739f0ae795728da1491e9db5a544c76ad8eb7570f5c4bb3d6c637b2cb41bfdcdb47fa823c8649319"
 }

server.js

@@ -0,0 +1,785 @@
+// @ts-nocheck
+import {readFile} from "node:fs/promises"
+import {dirname, extname, join} from "node:path"
+import {fileURLToPath} from "node:url"
+import {load as loadHtml} from "cheerio"
+import {serve} from "@hono/node-server"
+import {serveStatic} from "@hono/node-server/serve-static"
+import {Hono} from "hono"
+import {request} from "@welshman/net"
+import {
+  Address,
+  CLASSIFIED,
+  EVENT_TIME,
+  POLL,
+  ROOM_META,
+  THREAD,
+  ZAP_GOAL,
+  displayPubkey,
+  getTagValue,
+  normalizeRelayUrl,
+  readRoomMeta,
+} from "@welshman/util"
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+const buildDir = join(__dirname, "build")
+const indexPath = join(buildDir, "index.html")
+
+const RELAY_CACHE_TTL_MS = 5 * 60 * 1000
+const NOSTR_CACHE_TTL_MS = 60 * 1000
+const RELAY_TIMEOUT_MS = 1500
+const NOSTR_TIMEOUT_MS = 1800
+
+const staticTitles = new Map([
+  ["/", "Redirecting"],
+  ["/home", "Home"],
+  ["/spaces", "Spaces"],
+  ["/spaces/create", "Create a Space"],
+  ["/chat", "Messages"],
+  ["/join", "Join Space"],
+  ["/people", "Find People"],
+  ["/settings/about", "About"],
+  ["/settings/profile", "Profile Settings"],
+  ["/settings/content", "Content Settings"],
+  ["/settings/privacy", "Privacy Settings"],
+  ["/settings/relays", "Relay Settings"],
+  ["/settings/alerts", "Alert Settings"],
+  ["/settings/wallet", "Wallet Settings"],
+])
+
+const spaceSectionTitles = new Map([
+  ["chat", "Space Chat"],
+  ["recent", "Recent Activity"],
+  ["threads", "Threads"],
+  ["classifieds", "Classifieds"],
+  ["calendar", "Calendar"],
+  ["goals", "Goals"],
+  ["polls", "Polls"],
+])
+
+const eventRouteKinds = new Map([
+  ["threads", THREAD],
+  ["goals", ZAP_GOAL],
+  ["calendar", EVENT_TIME],
+  ["classifieds", CLASSIFIED],
+  ["polls", POLL],
+])
+
+const reservedSingleSegments = new Set([
+  "home",
+  "spaces",
+  "space",
+  "chat",
+  "join",
+  "people",
+  "settings",
+])
+
+const relayInfoCache = new Map()
+const roomInfoCache = new Map()
+const eventCache = new Map()
+
+const indexHtml = await readFile(indexPath, "utf8").catch(error => {
+  console.error("Unable to start server: build/index.html is missing. Run `pnpm run build` first.")
+
+  throw error
+})
+
+const defaults = getHtmlDefaults(indexHtml)
+const app = new Hono()
+const staticFiles = serveStatic({
+  root: "./build",
+  rewriteRequestPath: path => path.replace(/^\/+/, ""),
+})
+
+app.use("*", staticFiles)
+
+app.get("*", async c => {
+  const requestUrl = new URL(c.req.url)
+
+  if (extname(requestUrl.pathname)) {
+    return c.text("Not Found", 404)
+  }
+
+  const origin = getRequestOrigin(c.req.raw, requestUrl)
+  const meta = await buildRouteMeta(requestUrl, origin)
+  const html = renderHtml(indexHtml, meta)
+
+  c.header("Cache-Control", "no-cache")
+
+  return c.html(html)
+})
+
+app.notFound(c => c.text("Not Found", 404))
+
+app.onError((error, c) => {
+  console.error(error)
+
+  return c.text("Internal Server Error", 500)
+})
+
+const port = Number.parseInt(process.env.PORT || "3000", 10)
+const host = process.env.HOST || "0.0.0.0"
+
+serve({fetch: app.fetch, hostname: host, port})
+console.log(`Flotilla server listening on http://${host}:${port}`)
+
+async function buildRouteMeta(requestUrl, origin) {
+  const absoluteDefaultImage = toAbsoluteHttpUrl(defaults.image, origin)
+
+  if (!absoluteDefaultImage) {
+    throw new Error(`Default twitter:image must resolve to an absolute URL. Found: ${defaults.image}`)
+  }
+
+  const meta = {
+    card: "summary",
+    description: defaults.description,
+    image: absoluteDefaultImage,
+    site: defaults.site,
+    title: defaults.title,
+    type: "website",
+    url: requestUrl.href,
+  }
+
+  const route = parseRoute(requestUrl.pathname)
+
+  if (route.kind === "join") {
+    return await buildJoinMeta(meta, requestUrl, origin)
+  }
+
+  if (route.kind === "static") {
+    meta.title = route.title
+
+    return meta
+  }
+
+  if (route.kind === "chat") {
+    meta.title = getChatTitle(route.chat)
+
+    return meta
+  }
+
+  if (route.kind === "bech32") {
+    meta.title = "Opening Link"
+
+    return meta
+  }
+
+  if (!route.relay) {
+    return meta
+  }
+
+  const relayUrl = normalizeRelayParam(route.relay)
+  const relayInfo = relayUrl ? await loadRelayInfo(relayUrl) : undefined
+  const relayName = relayInfo?.name || (relayUrl ? getRelayDisplay(relayUrl) : "Space")
+  const relayHttpUrl = relayUrl ? toRelayHttpUrl(relayUrl) : undefined
+
+  if (relayInfo?.icon) {
+    meta.image = relayInfo.icon
+  }
+
+  if (relayInfo?.description) {
+    meta.description = relayInfo.description
+  }
+
+  if (route.kind === "space") {
+    meta.title = relayName
+
+    return meta
+  }
+
+  if (route.kind === "space-section") {
+    meta.title = composeSpaceTitle(relayName, route.sectionTitle)
+
+    return meta
+  }
+
+  if (route.kind === "room") {
+    const roomInfo = relayUrl ? await loadRoomInfo(relayUrl, route.h) : undefined
+    const roomName = roomInfo?.name || route.h
+
+    meta.title = composeSpaceTitle(relayName, roomName)
+    meta.description = roomInfo?.about || meta.description
+
+    const roomImage = roomInfo?.picture
+      ? toAbsoluteHttpUrl(roomInfo.picture, relayHttpUrl || origin)
+      : undefined
+
+    if (roomImage) {
+      meta.image = roomImage
+    }
+
+    return meta
+  }
+
+  if (route.kind === "event") {
+    const event = relayUrl
+      ? await loadEventForRoute(relayUrl, route.section, route.identifier)
+      : undefined
+    const eventTitle = getEventTitle(route.section, event)
+
+    meta.title = composeSpaceTitle(relayName, eventTitle)
+    meta.description = getEventDescription(route.section, event, meta.description)
+
+    const eventImage = getTagValue("image", event?.tags || [])
+    const absoluteEventImage = eventImage
+      ? toAbsoluteHttpUrl(eventImage, relayHttpUrl || origin)
+      : undefined
+
+    if (absoluteEventImage) {
+      meta.image = absoluteEventImage
+      meta.card = "summary_large_image"
+    }
+
+    return meta
+  }
+
+  return meta
+}
+
+function parseRoute(pathname) {
+  const normalizedPath = normalizePathname(pathname)
+
+  if (normalizedPath === "/join") {
+    return {kind: "join"}
+  }
+
+  if (staticTitles.has(normalizedPath)) {
+    return {kind: "static", title: staticTitles.get(normalizedPath)}
+  }
+
+  const segments = getPathSegments(normalizedPath)
+
+  if (segments.length === 2 && segments[0] === "chat") {
+    return {chat: segments[1], kind: "chat"}
+  }
+
+  if (segments.length === 1 && !reservedSingleSegments.has(segments[0])) {
+    return {bech32: segments[0], kind: "bech32"}
+  }
+
+  if ((segments[0] === "spaces" || segments[0] === "space") && segments.length >= 2) {
+    const relay = segments[1]
+
+    if (segments.length === 2) {
+      return {kind: "space", relay}
+    }
+
+    const section = segments[2]
+
+    if (segments.length === 3) {
+      if (spaceSectionTitles.has(section)) {
+        return {
+          kind: "space-section",
+          relay,
+          section,
+          sectionTitle: spaceSectionTitles.get(section),
+        }
+      }
+
+      return {h: section, kind: "room", relay}
+    }
+
+    if (segments.length === 4 && eventRouteKinds.has(section)) {
+      return {
+        identifier: segments[3],
+        kind: "event",
+        relay,
+        section,
+      }
+    }
+  }
+
+  return {kind: "unknown"}
+}
+
+async function buildJoinMeta(meta, requestUrl, origin) {
+  const relayUrl = parseInviteRelay(requestUrl)
+
+  if (!relayUrl) {
+    meta.title = staticTitles.get("/join") || "Join Space"
+
+    return meta
+  }
+
+  const relayInfo = await loadRelayInfo(relayUrl)
+  const relayDisplay = relayInfo?.name || getRelayDisplay(relayUrl)
+
+  meta.title = `Invitation to join ${relayDisplay}`
+  meta.description = relayInfo?.description || `Join this Flotilla space on ${relayDisplay}.`
+  meta.image = relayInfo?.icon || meta.image
+  meta.url = requestUrl.href
+  meta.site = defaults.site
+
+  return meta
+}
+
+function getChatTitle(chat) {
+  if (!chat) {
+    return "Chat"
+  }
+
+  const peers = chat
+    .split(",")
+    .map(part => part.trim())
+    .filter(Boolean)
+
+  if (peers.length === 1) {
+    return `Chat with ${displayPubkey(peers[0])}`
+  }
+
+  if (peers.length > 1) {
+    return `Group chat (${peers.length})`
+  }
+
+  return "Chat"
+}
+
+function getEventTitle(section, event) {
+  if (section === "threads") {
+    return getTagValue("title", event?.tags || []) || "Thread"
+  }
+
+  if (section === "calendar") {
+    return getTagValue("title", event?.tags || []) || "Event"
+  }
+
+  if (section === "classifieds") {
+    return getTagValue("title", event?.tags || []) || "Listing"
+  }
+
+  if (section === "goals") {
+    return event?.content?.trim() || getTagValue("summary", event?.tags || []) || "Goal"
+  }
+
+  if (section === "polls") {
+    return getTagValue("title", event?.tags || []) || "Poll"
+  }
+
+  return "Event"
+}
+
+function getEventDescription(section, event, fallback) {
+  const summary =
+    getTagValue("summary", event?.tags || []) || getTagValue("description", event?.tags || [])
+
+  if (summary) {
+    return clip(summary, 220)
+  }
+
+  if (event?.content?.trim()) {
+    return clip(event.content.trim(), 220)
+  }
+
+  if (section === "threads") {
+    return "Read this thread in Flotilla."
+  }
+
+  if (section === "goals") {
+    return "Track this goal in Flotilla."
+  }
+
+  if (section === "calendar") {
+    return "View this calendar event in Flotilla."
+  }
+
+  if (section === "classifieds") {
+    return "Browse this listing in Flotilla."
+  }
+
+  if (section === "polls") {
+    return "Take this poll in Flotilla."
+  }
+
+  return fallback
+}
+
+function composeSpaceTitle(spaceName, leafTitle) {
+  const cleanedSpace = spaceName?.trim()
+  const cleanedLeaf = leafTitle?.trim()
+
+  if (cleanedSpace && cleanedLeaf) {
+    return `${cleanedSpace} / ${cleanedLeaf}`
+  }
+
+  return cleanedLeaf || cleanedSpace || defaults.title
+}
+
+async function loadRelayInfo(relayUrl) {
+  const cached = getCachedValue(relayInfoCache, relayUrl)
+
+  if (cached) {
+    return cached
+  }
+
+  const relayHttpUrl = toRelayHttpUrl(relayUrl)
+
+  if (!relayHttpUrl) {
+    setCachedValue(relayInfoCache, relayUrl, undefined, RELAY_CACHE_TTL_MS)
+
+    return undefined
+  }
+
+  const controller = new AbortController()
+  const timeout = setTimeout(() => controller.abort(), RELAY_TIMEOUT_MS)
+
+  let value
+
+  try {
+    const response = await fetch(relayHttpUrl, {
+      headers: {Accept: "application/nostr+json"},
+      signal: controller.signal,
+    })
+
+    if (response.ok) {
+      const json = await response.json()
+      const name = typeof json.name === "string" ? json.name.trim() : ""
+      const description = typeof json.description === "string" ? json.description.trim() : ""
+      const icon = typeof json.icon === "string" ? toAbsoluteHttpUrl(json.icon, relayHttpUrl) : undefined
+
+      value = {
+        description: description || undefined,
+        icon,
+        name: name || undefined,
+      }
+    }
+  } catch {
+    value = undefined
+  } finally {
+    clearTimeout(timeout)
+  }
+
+  setCachedValue(relayInfoCache, relayUrl, value, RELAY_CACHE_TTL_MS)
+
+  return value
+}
+
+async function loadRoomInfo(relayUrl, h) {
+  const cacheKey = `${relayUrl}|${h}`
+  const cached = getCachedValue(roomInfoCache, cacheKey)
+
+  if (cached !== undefined) {
+    return cached
+  }
+
+  const events = await requestEvents(relayUrl, [{"#d": [h], kinds: [ROOM_META], limit: 20}])
+  const roomMetas = []
+
+  for (const event of events) {
+    try {
+      const roomMeta = readRoomMeta(event)
+
+      if (roomMeta.h === h) {
+        roomMetas.push(roomMeta)
+      }
+    } catch {
+      // Ignore malformed room metadata.
+    }
+  }
+
+  const latest = roomMetas.sort((a, b) => b.event.created_at - a.event.created_at)[0]
+  const roomInfo = latest
+    ? {
+        about: latest.about,
+        name: latest.name,
+        picture: latest.picture,
+      }
+    : undefined
+
+  setCachedValue(roomInfoCache, cacheKey, roomInfo, NOSTR_CACHE_TTL_MS)
+
+  return roomInfo
+}
+
+async function loadEventForRoute(relayUrl, section, identifier) {
+  const kind = eventRouteKinds.get(section)
+
+  if (!kind || !identifier) {
+    return undefined
+  }
+
+  const cacheKey = `${relayUrl}|${section}|${identifier}`
+  const cached = getCachedValue(eventCache, cacheKey)
+
+  if (cached !== undefined) {
+    return cached
+  }
+
+  const filters = getEventFilters(kind, identifier)
+  const events = filters.length > 0 ? await requestEvents(relayUrl, filters) : []
+  const event = events[0]
+
+  setCachedValue(eventCache, cacheKey, event, NOSTR_CACHE_TTL_MS)
+
+  return event
+}
+
+function getEventFilters(kind, identifier) {
+  if (kind === EVENT_TIME || kind === CLASSIFIED) {
+    try {
+      const address = Address.from(identifier)
+
+      return [
+        {
+          "#d": [address.identifier],
+          authors: [address.pubkey],
+          kinds: [address.kind],
+          limit: 1,
+        },
+      ]
+    } catch {
+      return [{ids: [identifier], kinds: [kind], limit: 1}]
+    }
+  }
+
+  return [{ids: [identifier], kinds: [kind], limit: 1}]
+}
+
+async function requestEvents(relayUrl, filters) {
+  const controller = new AbortController()
+  const timeout = setTimeout(() => controller.abort(), NOSTR_TIMEOUT_MS)
+
+  try {
+    return await request({
+      autoClose: true,
+      filters,
+      relays: [relayUrl],
+      signal: controller.signal,
+    })
+  } catch {
+    return []
+  } finally {
+    clearTimeout(timeout)
+  }
+}
+
+function renderHtml(html, meta) {
+  const $ = loadHtml(html)
+
+  upsertTitle($, meta.title)
+  upsertMetaTag($, "name", "description", meta.description)
+  upsertMetaTag($, "name", "og:url", meta.url)
+  upsertMetaTag($, "name", "og:type", meta.type)
+  upsertMetaTag($, "name", "og:title", meta.title)
+  upsertMetaTag($, "name", "og:description", meta.description)
+  upsertMetaTag($, "name", "twitter:card", meta.card)
+  upsertMetaTag($, "name", "twitter:site", meta.site)
+  upsertMetaTag($, "name", "twitter:title", meta.title)
+  upsertMetaTag($, "name", "twitter:description", meta.description)
+  upsertMetaTag($, "name", "twitter:image", meta.image)
+
+  upsertMetaTag($, "property", "og:url", meta.url)
+  upsertMetaTag($, "property", "og:type", meta.type)
+  upsertMetaTag($, "property", "og:title", meta.title)
+  upsertMetaTag($, "property", "og:description", meta.description)
+  upsertMetaTag($, "property", "og:image", meta.image)
+
+  return $.html()
+}
+
+function upsertTitle($, value) {
+  let titleTag = $("head > title").first()
+
+  if (titleTag.length === 0) {
+    $("head").prepend("<title></title>")
+    titleTag = $("head > title").first()
+  }
+
+  titleTag.text(value)
+}
+
+function upsertMetaTag($, attribute, key, content) {
+  const selector = `meta[${attribute}="${key}"]`
+  let metaTag = $(selector).first()
+
+  if (metaTag.length === 0) {
+    metaTag = $("<meta>").attr(attribute, key)
+    $("head").append(metaTag)
+  }
+
+  metaTag.attr("content", content)
+}
+
+function getHtmlDefaults(html) {
+  const $ = loadHtml(html)
+
+  return {
+    description: readRequiredMetaContent($, "og:description"),
+    image: readRequiredMetaContent($, "twitter:image"),
+    site: readRequiredMetaContent($, "twitter:site"),
+    title: readRequiredMetaContent($, "og:title"),
+  }
+}
+
+function readRequiredMetaContent($, key) {
+  const content = readMetaContent($, key)
+
+  if (!content) {
+    throw new Error(`Missing required meta tag ${key} in build/index.html. Ensure it exists in src/app.html.`)
+  }
+
+  return content
+}
+
+function readMetaContent($, key) {
+  const byName = $(`meta[name="${key}"]`).attr("content")
+
+  if (typeof byName === "string" && byName.trim()) {
+    return byName.trim()
+  }
+
+  const byProperty = $(`meta[property="${key}"]`).attr("content")
+
+  return typeof byProperty === "string" && byProperty.trim() ? byProperty.trim() : undefined
+}
+
+function parseInviteRelay(requestUrl) {
+  const relay = requestUrl.searchParams.get("r") || requestUrl.searchParams.get("relay")
+
+  if (!relay) {
+    return undefined
+  }
+
+  return normalizeRelayParam(relay)
+}
+
+function normalizeRelayParam(value) {
+  const decoded = value.trim()
+
+  if (!decoded) {
+    return undefined
+  }
+
+  const hasProtocol = /^[a-zA-Z][a-zA-Z\d+.-]*:\/\//.test(decoded)
+  const withProtocol = hasProtocol ? decoded : `wss://${decoded}`
+
+  try {
+    const normalized = normalizeRelayUrl(withProtocol)
+
+    if (normalized.startsWith("ws://") || normalized.startsWith("wss://")) {
+      return normalized.replace(/\/+$/, "")
+    }
+  } catch {
+    // Ignore malformed relay URLs.
+  }
+
+  return undefined
+}
+
+function toRelayHttpUrl(relayUrl) {
+  if (relayUrl.startsWith("wss://")) {
+    return `https://${relayUrl.slice(6)}`
+  }
+
+  if (relayUrl.startsWith("ws://")) {
+    return `http://${relayUrl.slice(5)}`
+  }
+
+  return undefined
+}
+
+function getRelayDisplay(relayUrl) {
+  const relayHttpUrl = toRelayHttpUrl(relayUrl)
+
+  if (!relayHttpUrl) {
+    return relayUrl
+  }
+
+  try {
+    return new URL(relayHttpUrl).host
+  } catch {
+    return relayUrl
+  }
+}
+
+function toAbsoluteHttpUrl(value, baseUrl) {
+  try {
+    const parsed = new URL(value, baseUrl)
+
+    if (parsed.protocol === "http:" || parsed.protocol === "https:") {
+      return parsed.href
+    }
+  } catch {
+    // Ignore malformed URLs.
+  }
+
+  return undefined
+}
+
+function getRequestOrigin(req, requestUrl) {
+  const protocol = firstHeaderValue(req.headers.get("x-forwarded-proto")) || requestUrl.protocol.slice(0, -1)
+  const host =
+    firstHeaderValue(req.headers.get("x-forwarded-host")) ||
+    req.headers.get("host") ||
+    requestUrl.host ||
+    "localhost"
+
+  return `${protocol}://${host}`
+}
+
+function firstHeaderValue(value) {
+  if (typeof value === "string") {
+    return value.split(",")[0].trim()
+  }
+
+  return undefined
+}
+
+function normalizePathname(pathname) {
+  const cleanPath = pathname.replace(/\/+/g, "/")
+
+  if (cleanPath === "/") {
+    return "/"
+  }
+
+  return cleanPath.replace(/\/+$/, "") || "/"
+}
+
+function getPathSegments(pathname) {
+  const normalized = normalizePathname(pathname)
+
+  if (normalized === "/") {
+    return []
+  }
+
+  return normalized
+    .slice(1)
+    .split("/")
+    .map(decodeSegment)
+}
+
+function decodeSegment(value) {
+  try {
+    return decodeURIComponent(value)
+  } catch {
+    return value
+  }
+}
+
+function clip(text, maxLength) {
+  if (text.length <= maxLength) {
+    return text
+  }
+
+  return `${text.slice(0, maxLength - 1).trimEnd()}…`
+}
+
+function getCachedValue(cache, key) {
+  const cached = cache.get(key)
+
+  if (!cached) {
+    return undefined
+  }
+
+  if (cached.expiresAt <= Date.now()) {
+    cache.delete(key)
+
+    return undefined
+  }
+
+  return cached.value
+}
+
+function setCachedValue(cache, key, value, ttlMs) {
+  cache.set(key, {expiresAt: Date.now() + ttlMs, value})
+}