refactor: simplify ContentLinkUrl rendering

Co-authored-by: nayan9617 <nayanp4925@gmail.com>
Co-committed-by: nayan9617 <nayanp4925@gmail.com>

.env

@@ -19,5 +19,6 @@ VITE_DEFAULT_SEARCH_RELAYS=relay.ditto.pub,antiprimal.net,relay.vertexlab.io
 VITE_DEFAULT_MESSAGING_RELAYS=auth.nostr1.com,relay.keychat.io,relay.ditto.pub
 VITE_SIGNER_RELAYS=relay.nsec.app,ephemeral.snowflare.cc,bucket.coracle.social
 VITE_VAPID_PUBLIC_KEY=BIt2D4BdgdbCowD_0d3Np6GbrIGHxd7aIEUeZNe3hQuRlHz02OhzvDaai0XSFoJYVzSzdMjdyW-QhvW9_yq8j4Y
+VITE_THUMBNAIL_URL=
 VITE_GLITCHTIP_API_KEY=
 GLITCHTIP_AUTH_TOKEN=

.gitignore

@@ -28,6 +28,7 @@ node_modules/
 .pnpm-store/
 build/
 .svelte-kit/
+.next/
 
 # Rust/Tauri
 *target/

src/app.css

@@ -1,4 +1,4 @@
-@import 'tailwindcss';
+@import "tailwindcss";
 
 @config "../tailwind.config.js";
 
@@ -131,7 +131,7 @@
 }
 
 @utility content-padding-y {
-  @apply pt-4 sm:pt-8 md:pt-12 pb-4 sm:pb-8 md:pb-12;
+  @apply pt-4 pb-4 sm:pt-8 sm:pb-8 md:pt-12 md:pb-12;
 }
 
 @utility content-sizing {
@@ -139,7 +139,7 @@
 }
 
 @utility content {
-  @apply m-auto w-full max-w-3xl px-4 sm:px-8 md:px-12 pt-4 sm:pt-8 md:pt-12 pb-4 sm:pb-8 md:pb-12;
+  @apply m-auto w-full max-w-3xl px-4 pt-4 pb-4 sm:px-8 sm:pt-8 sm:pb-8 md:px-12 md:pt-12 md:pb-12;
 }
 
 @utility heading {

src/app/components/ContentLinkBlock.svelte

@@ -1,27 +1,44 @@
 <script lang="ts">
   import {call, ellipsize, displayUrl, postJson} from "@welshman/lib"
   import {isRelayUrl, getTagValue} from "@welshman/util"
+  import {Capacitor} from "@capacitor/core"
   import {preventDefault, stopPropagation} from "@lib/html"
   import Link from "@lib/components/Link.svelte"
   import ContentLinkDetail from "@app/components/ContentLinkDetail.svelte"
+  import ContentLinkUrl from "@app/components/ContentLinkUrl.svelte"
   import ContentLinkBlockImage from "@app/components/ContentLinkBlockImage.svelte"
   import {pushModal} from "@app/util/modal"
-  import {dufflepud, PLATFORM_URL, IMAGE_CONTENT_TYPES, VIDEO_CONTENT_TYPES} from "@app/core/state"
-  import {makeSpacePath} from "@app/util/routes"
+  import {
+    dufflepud,
+    IMAGE_CONTENT_TYPES,
+    PLATFORM_URL,
+    VIDEO_CONTENT_TYPES,
+    THUMBNAIL_URL,
+    isRoomId,
+  } from "@app/core/state"
 
   const {value, event} = $props()
 
   let hideImage = $state(false)
 
   const url = value.url.toString()
-  const fileType = getTagValue("file-type", event.tags) || ""
+  const isRoomOrRelay = isRoomId(url) || isRelayUrl(url)
   const [href, external] = call(() => {
-    if (isRelayUrl(url)) return [makeSpacePath(url), false]
     if (url.startsWith(PLATFORM_URL)) return [url.replace(PLATFORM_URL, ""), false]
 
     return [url, true]
   })
 
+  const fileType = getTagValue("file-type", event.tags) || ""
+
+  const getVideoPoster = (videoUrl: string): string | undefined => {
+    if (Capacitor.getPlatform() === "android" && THUMBNAIL_URL) {
+      return `${THUMBNAIL_URL}/thumbnail?url=${encodeURIComponent(videoUrl)}`
+    }
+
+    return undefined
+  }
+
   const loadPreview = async () => {
     const json = await postJson(dufflepud("link/preview"), {url})
 
@@ -39,41 +56,50 @@
   const expand = () => pushModal(ContentLinkDetail, {value, event}, {fullscreen: true})
 </script>
 
-<Link {external} {href} class="my-2 block">
-  <div class="overflow-hidden rounded-box">
-    {#if url.match(/\.(mov|webm|mp4)$/) || VIDEO_CONTENT_TYPES.includes(fileType)}
-      <video controls src={url} class="max-h-96 rounded-box object-contain object-center">
-        <track kind="captions" />
-      </video>
-    {:else if url.match(/\.(jpe?g|png|gif|webp)$/) || IMAGE_CONTENT_TYPES.includes(fileType)}
-      <button type="button" onclick={stopPropagation(preventDefault(expand))}>
-        <ContentLinkBlockImage {value} {event} class="m-auto max-h-96 rounded-box" />
-      </button>
-    {:else}
-      {#await loadPreview()}
-        <div class="center my-12 w-full">
-          <span class="loading loading-spinner"></span>
-        </div>
-      {:then preview}
-        <div class="bg-alt flex max-w-xl flex-col leading-normal">
-          {#if preview.image && !hideImage}
-            <img
-              alt=""
-              onerror={onError}
-              src={preview.image}
-              class="bg-alt max-h-72 rounded-t-box object-contain object-center" />
-          {/if}
-          <div class="flex flex-col gap-2 p-4">
-            <strong class="overflow-hidden text-ellipsis whitespace-nowrap"
-              >{preview.title || displayUrl(url)}</strong>
-            <p>{ellipsize(preview.description, 140)}</p>
+{#if isRoomOrRelay}
+  <ContentLinkUrl {url} class="bg-alt my-2 block p-4 leading-normal whitespace-nowrap" />
+{:else}
+  <Link {external} {href} class="my-2 block">
+    <div class="overflow-hidden rounded-box">
+      {#if url.match(/\.(mov|webm|mp4)$/) || VIDEO_CONTENT_TYPES.includes(fileType)}
+        <video
+          controls
+          src={url}
+          poster={getVideoPoster(url)}
+          preload="metadata"
+          class="max-h-96 rounded-box object-contain object-center">
+          <track kind="captions" />
+        </video>
+      {:else if url.match(/\.(jpe?g|png|gif|webp)$/) || IMAGE_CONTENT_TYPES.includes(fileType)}
+        <button type="button" onclick={stopPropagation(preventDefault(expand))}>
+          <ContentLinkBlockImage {value} {event} class="m-auto max-h-96 rounded-box" />
+        </button>
+      {:else}
+        {#await loadPreview()}
+          <div class="center my-12 w-full">
+            <span class="loading loading-spinner"></span>
           </div>
-        </div>
-      {:catch}
-        <p class="bg-alt p-12 text-center leading-normal">
-          Unable to load a preview for {url}
-        </p>
-      {/await}
-    {/if}
-  </div>
-</Link>
+        {:then preview}
+          <div class="bg-alt flex max-w-xl flex-col leading-normal">
+            {#if preview.image && !hideImage}
+              <img
+                alt=""
+                onerror={onError}
+                src={preview.image}
+                class="bg-alt max-h-72 rounded-t-box object-contain object-center" />
+            {/if}
+            <div class="flex flex-col gap-2 p-4">
+              <strong class="overflow-hidden text-ellipsis whitespace-nowrap"
+                >{preview.title || displayUrl(url)}</strong>
+              <p>{ellipsize(preview.description, 140)}</p>
+            </div>
+          </div>
+        {:catch}
+          <p class="bg-alt p-12 text-center leading-normal">
+            Unable to load a preview for {url}
+          </p>
+        {/await}
+      {/if}
+    </div>
+  </Link>
+{/if}

src/app/components/ContentLinkInline.svelte

@@ -1,25 +1,18 @@
 <script lang="ts">
-  import {call, displayUrl} from "@welshman/lib"
-  import {isRelayUrl, getTagValue} from "@welshman/util"
+  import {displayUrl} from "@welshman/lib"
+  import {getTagValue} from "@welshman/util"
   import {preventDefault, stopPropagation} from "@lib/html"
   import LinkRound from "@assets/icons/link-round.svg?dataurl"
   import Icon from "@lib/components/Icon.svelte"
-  import Link from "@lib/components/Link.svelte"
   import ContentLinkDetail from "@app/components/ContentLinkDetail.svelte"
+  import ContentLinkUrl from "@app/components/ContentLinkUrl.svelte"
   import {pushModal} from "@app/util/modal"
-  import {PLATFORM_URL, IMAGE_CONTENT_TYPES} from "@app/core/state"
-  import {makeSpacePath} from "@app/util/routes"
+  import {IMAGE_CONTENT_TYPES} from "@app/core/state"
 
   const {value, event} = $props()
 
   const url = value.url.toString()
   const fileType = getTagValue("file-type", event.tags) || ""
-  const [href, external] = call(() => {
-    if (isRelayUrl(url)) return [makeSpacePath(url), false]
-    if (url.startsWith(PLATFORM_URL)) return [url.replace(PLATFORM_URL, ""), false]
-
-    return [url, true]
-  })
 
   const expand = () => pushModal(ContentLinkDetail, {value, event}, {fullscreen: true})
 </script>
@@ -34,8 +27,5 @@
     {displayUrl(url)}
   </a>
 {:else}
-  <Link {external} {href} class="link-content whitespace-nowrap">
-    <Icon icon={LinkRound} size={3} class="inline-block" />
-    {displayUrl(url)}
-  </Link>
+  <ContentLinkUrl {url} class="link-content whitespace-nowrap" />
 {/if}

src/app/components/ContentLinkUrl.svelte

@@ -0,0 +1,67 @@
+<script lang="ts">
+  import {call, displayUrl} from "@welshman/lib"
+  import {displayRelayUrl, isRelayUrl, normalizeRelayUrl} from "@welshman/util"
+  import LinkRound from "@assets/icons/link-round.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import Link from "@lib/components/Link.svelte"
+  import {PLATFORM_URL, displayRoom, isRoomId, splitRoomId} from "@app/core/state"
+  import {makeRoomPath, makeSpacePath} from "@app/util/routes"
+
+  const {
+    url,
+    class: className = "",
+  }: {
+    url: string
+    class?: string
+  } = $props()
+
+  const roomReference = call(() => {
+    if (!isRoomId(url)) {
+      return undefined
+    }
+
+    const [roomUrl, h] = splitRoomId(url)
+
+    if (!roomUrl || !h || !isRelayUrl(roomUrl)) {
+      return undefined
+    }
+
+    return {url: normalizeRelayUrl(roomUrl), h}
+  })
+
+  const relayReference = call(() => {
+    if (roomReference || !isRelayUrl(url)) {
+      return undefined
+    }
+
+    return normalizeRelayUrl(url)
+  })
+
+  const label = call(() => {
+    if (roomReference) {
+      const spaceName = displayRelayUrl(roomReference.url)
+      const roomName = displayRoom(roomReference.url, roomReference.h)
+
+      return `~${spaceName} / ${roomName}`
+    }
+
+    if (relayReference) {
+      return `~${displayRelayUrl(relayReference)}`
+    }
+
+    return displayUrl(url)
+  })
+
+  const [href, external] = call(() => {
+    if (roomReference) return [makeRoomPath(roomReference.url, roomReference.h), false]
+    if (relayReference) return [makeSpacePath(relayReference), false]
+    if (url.startsWith(PLATFORM_URL)) return [url.replace(PLATFORM_URL, ""), false]
+
+    return [url, true]
+  })
+</script>
+
+<Link {external} {href} class={className}>
+  <Icon icon={LinkRound} size={3} class="inline-block" />
+  <span class="ml-2">{label}</span>
+</Link>

src/app/components/PrimaryNav.svelte

@@ -62,8 +62,7 @@
 {@render children?.()}
 
 <!-- a little extra something for ios -->
-<div
-  class="hide-on-keyboard fixed bottom-0 left-0 right-0 z-nav h-(--saib) bg-base-100 md:hidden">
+<div class="hide-on-keyboard fixed bottom-0 left-0 right-0 z-nav h-(--saib) bg-base-100 md:hidden">
 </div>
 <div
   class="hide-on-keyboard border-top bottom-sai fixed left-0 right-0 z-nav h-14 border border-base-200 bg-base-100 md:hidden">

src/app/core/state.ts

@@ -210,6 +210,8 @@ export const DEFAULT_PUBKEYS = import.meta.env.VITE_DEFAULT_PUBKEYS
 
 export const DUFFLEPUD_URL = "https://dufflepud.onrender.com"
 
+export const THUMBNAIL_URL = import.meta.env.VITE_THUMBNAIL_URL
+
 export const NIP46_PERMS =
   "nip44_encrypt,nip44_decrypt," +
   [
@@ -594,6 +596,8 @@ export const getRoomType = (room: RoomMeta): RoomType =>
 
 export const makeRoomId = (url: string, h: string) => `${url}'${h}`
 
+export const isRoomId = (id: string) => id.includes("'")
+
 export const splitRoomId = (id: string) => id.split("'")
 
 export const hasNip29 = (relay?: RelayProfile) =>

src/app/core/sync.ts

@@ -1,8 +1,8 @@
 import {page} from "$app/stores"
 import type {Unsubscriber} from "svelte/store"
-import {derived, get} from "svelte/store"
-import {last, call, ifLet, assoc, chunk, sleep, identity, WEEK, ago} from "@welshman/lib"
+import {last, call, ifLet, assoc, chunk, WEEK, ago} from "@welshman/lib"
 import {PollResponse} from "nostr-tools/kinds"
+import {merged} from "@welshman/store"
 import {
   getListTags,
   getRelayTagValues,
@@ -21,12 +21,11 @@ import {
   unionFilters,
   getTagValue,
 } from "@welshman/util"
-import type {Filter, TrustedEvent} from "@welshman/util"
+import type {Filter, List, PublishedList, TrustedEvent} from "@welshman/util"
 import {request, requestOne, Difference, DifferenceEvent} from "@welshman/net"
 import {
   pubkey,
   loadRelay,
-  userFollowList,
   userRelayList,
   userMessagingRelayList,
   loadRelayList,
@@ -49,7 +48,6 @@ import {
   loadGroupList,
   userSpaceUrls,
   userGroupList,
-  bootstrapPubkeys,
   decodeRelay,
   getSpaceUrlsFromGroupList,
   getSpaceRoomsFromGroupList,
@@ -74,6 +72,8 @@ const pullOneWithFallback = async (
   signal: AbortSignal,
   onEvent?: (event: TrustedEvent) => void,
 ) => {
+  if (signal.aborted) return
+
   const cachedEvents = repository.query([filter]).filter(isSignedEvent)
   const since = last(cachedEvents.slice(10))?.created_at || 0
 
@@ -86,6 +86,12 @@ const pullOneWithFallback = async (
   const shouldFallback =
     !hasNegentropy(url) ||
     (await new Promise(resolve => {
+      if (signal.aborted) {
+        resolve(false)
+        return
+      }
+
+      // If teardown wins while the diff is opening, skip the fallback path and let cleanup stay in control.
       const diff = new Difference({relay: url, filter, events: cachedEvents, signal})
 
       diff.on(DifferenceEvent.Error, () => {
@@ -111,9 +117,7 @@ export const pullWithFallback = async ({url, signal, filters, onEvent}: SyncOpts
 
   if (signal.aborted) return
 
-  for (const filter of filters) {
-    pullOneWithFallback(url, filter, signal, onEvent)
-  }
+  await Promise.all(filters.map(filter => pullOneWithFallback(url, filter, signal, onEvent)))
 }
 
 const listen = ({url, signal, filters, onEvent}: SyncOpts) => {
@@ -123,6 +127,8 @@ const listen = ({url, signal, filters, onEvent}: SyncOpts) => {
 }
 
 const pullAndListen = (options: SyncOpts) => {
+  if (options.signal.aborted) return
+
   pullWithFallback(options)
   listen(options)
 }
@@ -197,7 +203,7 @@ const syncUserRoomMembership = (url: string, h: string) => {
 const syncUserData = () => {
   const unsubscribersByKey = new Map<string, Unsubscriber>()
 
-  const unsubscribeGroupList = userGroupList.subscribe($userGroupList => {
+  const syncGroupList = ($userGroupList: List | undefined) => {
     if ($userGroupList) {
       const keys = new Set<string>()
 
@@ -226,43 +232,35 @@ const syncUserData = () => {
         }
       }
     }
+  }
+
+  const syncRelayList = ($userRelayList: PublishedList | undefined) => {
+    const pubkey = $userRelayList?.event?.pubkey
+
+    if (!pubkey) return
+
+    loadBlossomServerList(pubkey)
+    loadBlockedRelayList(pubkey)
+    loadFollowList(pubkey)
+    loadGroupList(pubkey)
+    loadMuteList(pubkey)
+    loadProfile(pubkey)
+    loadSettings(pubkey)
+    loadFeedsForPubkey(pubkey)
+  }
+
+  const unsubscribeGroupList = merged([userGroupList]).subscribe(([$userGroupList]) => {
+    syncGroupList($userGroupList)
   })
 
-  const unsubscribeRelayList = userRelayList.subscribe($userRelayList => {
-    if ($userRelayList) {
-      loadBlossomServerList($userRelayList.event.pubkey)
-      loadBlockedRelayList($userRelayList.event.pubkey)
-      loadFollowList($userRelayList.event.pubkey)
-      loadGroupList($userRelayList.event.pubkey)
-      loadMuteList($userRelayList.event.pubkey)
-      loadProfile($userRelayList.event.pubkey)
-      loadSettings($userRelayList.event.pubkey)
-      loadFeedsForPubkey($userRelayList.event.pubkey)
-    }
-  })
-
-  const unsubscribeFollows = userFollowList.subscribe(async $userFollowList => {
-    for (const pubkeys of chunk(10, get(bootstrapPubkeys))) {
-      // This isn't urgent, avoid clogging other stuff up
-      await sleep(1000)
-
-      await Promise.all(
-        pubkeys.flatMap(pk => [
-          loadRelayList(pk),
-          loadGroupList(pk),
-          loadProfile(pk),
-          loadFollowList(pk),
-          loadMuteList(pk),
-        ]),
-      )
-    }
+  const unsubscribeRelayList = merged([userRelayList]).subscribe(([$userRelayList]) => {
+    syncRelayList($userRelayList)
   })
 
   return () => {
     unsubscribersByKey.forEach(call)
     unsubscribeGroupList()
     unsubscribeRelayList()
-    unsubscribeFollows()
   }
 }
 
@@ -321,7 +319,7 @@ const syncSpace = (url: string, rooms: string[]) => {
 }
 
 const syncSpaces = () => {
-  const store = derived([userGroupList, page], identity)
+  const store = merged([userGroupList, page])
   const unsubscribersByUrl = new Map<string, Unsubscriber>()
   const roomsByUrl = new Map<string, string>()
 
@@ -383,6 +381,7 @@ const syncDMs = () => {
   const unsubscribersByUrl = new Map<string, Unsubscriber>()
 
   let currentPubkey: string | undefined
+  let currentShouldUnwrap = false
 
   const unsubscribeAll = () => {
     for (const [url, unsubscribe] of unsubscribersByUrl.entries()) {
@@ -391,6 +390,34 @@ const syncDMs = () => {
     }
   }
 
+  const syncPubkey = ($pubkey: string | undefined, $shouldUnwrap: boolean) => {
+    if ($pubkey !== currentPubkey) {
+      unsubscribeAll()
+    }
+
+    if ($pubkey && $shouldUnwrap) {
+      loadRelayList($pubkey)
+        .then(() => loadMessagingRelayList($pubkey))
+        .then($l => {
+          if ($l && currentPubkey === $pubkey && currentShouldUnwrap === $shouldUnwrap) {
+            subscribeAll($pubkey, getRelayTagValues(getListTags($l)))
+          }
+        })
+    }
+
+    currentPubkey = $pubkey
+    currentShouldUnwrap = $shouldUnwrap
+  }
+
+  const syncList = ($userMessagingRelayList: List | undefined) => {
+    const $pubkey = pubkey.get()
+    const $shouldUnwrap = shouldUnwrap.get()
+
+    if ($pubkey && $shouldUnwrap) {
+      subscribeAll($pubkey, getRelayTagValues(getListTags($userMessagingRelayList)))
+    }
+  }
+
   const subscribeAll = (pubkey: string, urls: string[]) => {
     // Start syncing newly added relays
     for (const url of urls) {
@@ -408,33 +435,16 @@ const syncDMs = () => {
     }
   }
 
-  // When pubkey changes, re-sync
-  const unsubscribePubkey = derived([pubkey, shouldUnwrap], identity).subscribe(
-    ([$pubkey, $shouldUnwrap]) => {
-      if ($pubkey !== currentPubkey) {
-        unsubscribeAll()
-      }
-
-      // If we have a pubkey, refresh our user's relay list then sync our subscriptions
-      if ($pubkey && $shouldUnwrap) {
-        loadRelayList($pubkey)
-          .then(() => loadMessagingRelayList($pubkey))
-          .then($l => subscribeAll($pubkey, getRelayTagValues(getListTags($l))))
-      }
-
-      currentPubkey = $pubkey
-    },
-  )
+  const unsubscribePubkey = merged([pubkey, shouldUnwrap]).subscribe(([$pubkey, $shouldUnwrap]) => {
+    syncPubkey($pubkey, $shouldUnwrap)
+  })
 
   // When user messaging relays change, update synchronization
-  const unsubscribeList = userMessagingRelayList.subscribe($userMessagingRelayList => {
-    const $pubkey = pubkey.get()
-    const $shouldUnwrap = shouldUnwrap.get()
-
-    if ($pubkey && $shouldUnwrap) {
-      subscribeAll($pubkey, getRelayTagValues(getListTags($userMessagingRelayList)))
-    }
-  })
+  const unsubscribeList = merged([userMessagingRelayList]).subscribe(
+    ([$userMessagingRelayList]) => {
+      syncList($userMessagingRelayList)
+    },
+  )
 
   return () => {
     unsubscribeAll()

src/app/editor/RoomReferenceExtension.ts

@@ -0,0 +1,42 @@
+import {mergeAttributes, Node} from "@tiptap/core"
+import {RoomReferenceNodeView} from "@app/editor/RoomReferenceNodeView"
+
+export const RoomReferenceExtension = Node.create({
+  name: "roomref",
+
+  atom: true,
+
+  inline: true,
+
+  group: "inline",
+
+  selectable: true,
+
+  priority: 1000,
+
+  addAttributes() {
+    return {
+      url: {default: undefined},
+      h: {default: undefined},
+    }
+  },
+
+  parseHTML() {
+    return [{tag: `span[data-type="${this.name}"]`}]
+  },
+
+  renderHTML({HTMLAttributes}) {
+    return ["span", mergeAttributes(HTMLAttributes, {"data-type": this.name}), "~"]
+  },
+
+  renderText({node}) {
+    const url = typeof node.attrs.url === "string" ? node.attrs.url : ""
+    const h = typeof node.attrs.h === "string" ? node.attrs.h : ""
+
+    return `${url}'${h}`
+  },
+
+  addNodeView() {
+    return RoomReferenceNodeView
+  },
+})

src/app/editor/RoomReferenceNodeView.ts

@@ -0,0 +1,29 @@
+import type {NodeViewRendererProps} from "@tiptap/core"
+import {displayRelayUrl} from "@welshman/util"
+import {deriveRoom} from "@app/core/state"
+
+export const RoomReferenceNodeView = ({node}: NodeViewRendererProps) => {
+  const dom = document.createElement("span")
+  const url = typeof node.attrs.url === "string" ? node.attrs.url : ""
+  const h = typeof node.attrs.h === "string" ? node.attrs.h : ""
+  const room = deriveRoom(url, h)
+
+  dom.classList.add("tiptap-object")
+
+  const unsubRoom = room.subscribe($room => {
+    dom.textContent = `~${displayRelayUrl(url)} / ${$room.name || h}`
+  })
+
+  return {
+    dom,
+    destroy: () => {
+      unsubRoom()
+    },
+    selectNode() {
+      dom.classList.add("tiptap-active")
+    },
+    deselectNode() {
+      dom.classList.remove("tiptap-active")
+    },
+  }
+}

src/app/editor/RoomSuggestion.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+  import {displayRelayUrl} from "@welshman/util"
+  import {deriveRoom, splitRoomId} from "@app/core/state"
+
+  type Props = {
+    value: string
+  }
+
+  const {value}: Props = $props()
+  const [url = "", h = ""] = splitRoomId(value)
+  const room = deriveRoom(url, h)
+
+  const label = $derived(`~${displayRelayUrl(url)} / ${$room.name || h}`)
+</script>
+
+<div class="max-w-full overflow-hidden text-ellipsis text-base font-semibold">
+  {label}
+</div>

src/app/editor/index.ts

@@ -4,7 +4,7 @@ import {get, derived} from "svelte/store"
 import {Router} from "@welshman/router"
 import {dec, inc} from "@welshman/lib"
 import {throttled} from "@welshman/store"
-import type {PublishedProfile} from "@welshman/util"
+import type {PublishedProfile, RoomMeta} from "@welshman/util"
 import {
   createSearch,
   profiles,
@@ -14,12 +14,26 @@ import {
   getWotGraph,
 } from "@welshman/app"
 import type {FileAttributes} from "@welshman/editor"
-import {Editor, MentionSuggestion, WelshmanExtension, editorProps} from "@welshman/editor"
+import {
+  Editor,
+  MentionSuggestion,
+  TippySuggestion,
+  WelshmanExtension,
+  editorProps,
+} from "@welshman/editor"
 import {escapeHtml} from "@lib/html"
 import {makeMentionNodeView} from "@app/editor/MentionNodeView"
 import ProfileSuggestion from "@app/editor/ProfileSuggestion.svelte"
+import {RoomReferenceExtension} from "@app/editor/RoomReferenceExtension"
+import RoomSuggestion from "@app/editor/RoomSuggestion.svelte"
 import {uploadFile} from "@app/core/commands"
-import {deriveSpaceMembers} from "@app/core/state"
+import {
+  deriveSpaceMembers,
+  makeRoomId,
+  splitRoomId,
+  userSpaceUrls,
+  roomsByUrl,
+} from "@app/core/state"
 import {pushToast} from "@app/util/toast"
 
 export const makeEditor = async ({
@@ -82,11 +96,36 @@ export const makeEditor = async ({
     },
   )
 
+  const roomReferenceSearch = derived(
+    [throttled(800, userSpaceUrls), throttled(800, roomsByUrl)],
+    ([$userSpaceUrls, $roomsByUrl]) => {
+      const roomIdByMeta = new WeakMap<RoomMeta, string>()
+      const options: RoomMeta[] = []
+
+      for (const roomUrl of $userSpaceUrls) {
+        for (const room of $roomsByUrl.get(roomUrl) || []) {
+          roomIdByMeta.set(room, makeRoomId(roomUrl, room.h))
+          options.push(room)
+        }
+      }
+
+      return createSearch(options, {
+        getValue: item => roomIdByMeta.get(item) || item.h,
+        fuseOptions: {
+          keys: ["name", "h"],
+          threshold: 0.3,
+          shouldSort: false,
+        },
+      })
+    },
+  )
+
   const ed = new Editor({
     content: typeof content === "string" ? escapeHtml(content) : content,
     editorProps,
     element: document.createElement("div"),
     extensions: [
+      RoomReferenceExtension,
       WelshmanExtension.configure({
         submit,
         extensions: {
@@ -128,6 +167,29 @@ export const makeEditor = async ({
 
                       mount(ProfileSuggestion, {target, props: {value, url}})
 
+                      return target
+                    },
+                  }),
+                  TippySuggestion({
+                    char: "~",
+                    name: "roomref",
+                    editor: (this as any).editor,
+                    search: (term: string) => get(roomReferenceSearch).searchValues(term),
+                    updateSignal: roomReferenceSearch,
+                    select: (id: string, props) => {
+                      const [roomUrl, h] = splitRoomId(id)
+
+                      if (!roomUrl || !h) {
+                        return
+                      }
+
+                      return props.command({url: roomUrl, h})
+                    },
+                    createSuggestion: (value: string) => {
+                      const target = document.createElement("div")
+
+                      mount(RoomSuggestion, {target, props: {value}})
+
                       return target
                     },
                   }),