refactor: align room mention labels with link rendering

src/app/components/ContentLinkBlock.svelte

@@ -1,8 +1,10 @@
 <script lang="ts">
   import {call, ellipsize, displayUrl, postJson} from "@welshman/lib"
-  import {isRelayUrl, getTagValue} from "@welshman/util"
+  import {isRelayUrl, getTagValue, normalizeRelayUrl, displayRelayUrl} from "@welshman/util"
   import {Capacitor} from "@capacitor/core"
   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 ContentLinkBlockImage from "@app/components/ContentLinkBlockImage.svelte"
@@ -13,17 +15,58 @@
     IMAGE_CONTENT_TYPES,
     VIDEO_CONTENT_TYPES,
     THUMBNAIL_URL,
+    displayRoom,
+    isRoomId,
+    splitRoomId,
   } from "@app/core/state"
-  import {makeSpacePath} from "@app/util/routes"
+  import {makeRoomPath, makeSpacePath} from "@app/util/routes"
 
   const {value, event} = $props()
 
   let hideImage = $state(false)
 
   const url = value.url.toString()
+  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 fileType = getTagValue("file-type", event.tags) || ""
   const [href, external] = call(() => {
-    if (isRelayUrl(url)) return [makeSpacePath(url), false]
+    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]
@@ -69,6 +112,11 @@
       <button type="button" onclick={stopPropagation(preventDefault(expand))}>
         <ContentLinkBlockImage {value} {event} class="m-auto max-h-96 rounded-box" />
       </button>
+    {:else if roomReference || relayReference}
+      <div class="bg-alt p-4 leading-normal">
+        <Icon icon={LinkRound} size={3} class="inline-block" />
+        <span class="ml-2">{label}</span>
+      </div>
     {:else}
       {#await loadPreview()}
         <div class="center my-12 w-full">

src/app/components/ContentLinkInline.svelte

@@ -1,21 +1,65 @@
 <script lang="ts">
   import {call, displayUrl} from "@welshman/lib"
-  import {isRelayUrl, getTagValue} from "@welshman/util"
+  import {isRelayUrl, getTagValue, normalizeRelayUrl, displayRelayUrl} 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 {pushModal} from "@app/util/modal"
-  import {PLATFORM_URL, IMAGE_CONTENT_TYPES} from "@app/core/state"
-  import {makeSpacePath} from "@app/util/routes"
+  import {
+    PLATFORM_URL,
+    IMAGE_CONTENT_TYPES,
+    displayRoom,
+    isRoomId,
+    splitRoomId,
+  } from "@app/core/state"
+  import {makeRoomPath, makeSpacePath} from "@app/util/routes"
 
   const {value, event} = $props()
 
   const url = value.url.toString()
+  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 fileType = getTagValue("file-type", event.tags) || ""
   const [href, external] = call(() => {
-    if (isRelayUrl(url)) return [makeSpacePath(url), false]
+    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]
@@ -36,6 +80,6 @@
 {:else}
   <Link {external} {href} class="link-content whitespace-nowrap">
     <Icon icon={LinkRound} size={3} class="inline-block" />
-    {displayUrl(url)}
+    {label}
   </Link>
 {/if}

src/app/core/state.ts

@@ -596,6 +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/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
                     },
                   }),