feat(channels): add resolve command + defaults

extensions/matrix/src/directory-live.ts

@@ -0,0 +1,175 @@
+import type { ChannelDirectoryEntry } from "../../../src/channels/plugins/types.js";
+
+import { resolveMatrixAuth } from "./matrix/client.js";
+
+type MatrixUserResult = {
+  user_id?: string;
+  display_name?: string;
+};
+
+type MatrixUserDirectoryResponse = {
+  results?: MatrixUserResult[];
+};
+
+type MatrixJoinedRoomsResponse = {
+  joined_rooms?: string[];
+};
+
+type MatrixRoomNameState = {
+  name?: string;
+};
+
+type MatrixAliasLookup = {
+  room_id?: string;
+};
+
+async function fetchMatrixJson<T>(params: {
+  homeserver: string;
+  path: string;
+  accessToken: string;
+  method?: "GET" | "POST";
+  body?: unknown;
+}): Promise<T> {
+  const res = await fetch(`${params.homeserver}${params.path}`, {
+    method: params.method ?? "GET",
+    headers: {
+      Authorization: `Bearer ${params.accessToken}`,
+      "Content-Type": "application/json",
+    },
+    body: params.body ? JSON.stringify(params.body) : undefined,
+  });
+  if (!res.ok) {
+    const text = await res.text().catch(() => "");
+    throw new Error(`Matrix API ${params.path} failed (${res.status}): ${text || "unknown error"}`);
+  }
+  return (await res.json()) as T;
+}
+
+function normalizeQuery(value?: string | null): string {
+  return value?.trim().toLowerCase() ?? "";
+}
+
+export async function listMatrixDirectoryPeersLive(params: {
+  cfg: unknown;
+  query?: string | null;
+  limit?: number | null;
+}): Promise<ChannelDirectoryEntry[]> {
+  const query = normalizeQuery(params.query);
+  if (!query) return [];
+  const auth = await resolveMatrixAuth({ cfg: params.cfg as never });
+  const res = await fetchMatrixJson<MatrixUserDirectoryResponse>({
+    homeserver: auth.homeserver,
+    accessToken: auth.accessToken,
+    path: "/_matrix/client/v3/user_directory/search",
+    method: "POST",
+    body: {
+      search_term: query,
+      limit: typeof params.limit === "number" && params.limit > 0 ? params.limit : 20,
+    },
+  });
+  const results = res.results ?? [];
+  return results
+    .map((entry) => {
+      const userId = entry.user_id?.trim();
+      if (!userId) return null;
+      return {
+        kind: "user",
+        id: userId,
+        name: entry.display_name?.trim() || undefined,
+        handle: entry.display_name ? `@${entry.display_name.trim()}` : undefined,
+        raw: entry,
+      } satisfies ChannelDirectoryEntry;
+    })
+    .filter(Boolean) as ChannelDirectoryEntry[];
+}
+
+async function resolveMatrixRoomAlias(
+  homeserver: string,
+  accessToken: string,
+  alias: string,
+): Promise<string | null> {
+  try {
+    const res = await fetchMatrixJson<MatrixAliasLookup>({
+      homeserver,
+      accessToken,
+      path: `/_matrix/client/v3/directory/room/${encodeURIComponent(alias)}`,
+    });
+    return res.room_id?.trim() || null;
+  } catch {
+    return null;
+  }
+}
+
+async function fetchMatrixRoomName(
+  homeserver: string,
+  accessToken: string,
+  roomId: string,
+): Promise<string | null> {
+  try {
+    const res = await fetchMatrixJson<MatrixRoomNameState>({
+      homeserver,
+      accessToken,
+      path: `/_matrix/client/v3/rooms/${encodeURIComponent(roomId)}/state/m.room.name`,
+    });
+    return res.name?.trim() || null;
+  } catch {
+    return null;
+  }
+}
+
+export async function listMatrixDirectoryGroupsLive(params: {
+  cfg: unknown;
+  query?: string | null;
+  limit?: number | null;
+}): Promise<ChannelDirectoryEntry[]> {
+  const query = normalizeQuery(params.query);
+  if (!query) return [];
+  const auth = await resolveMatrixAuth({ cfg: params.cfg as never });
+  const limit = typeof params.limit === "number" && params.limit > 0 ? params.limit : 20;
+
+  if (query.startsWith("#")) {
+    const roomId = await resolveMatrixRoomAlias(auth.homeserver, auth.accessToken, query);
+    if (!roomId) return [];
+    return [
+      {
+        kind: "group",
+        id: roomId,
+        name: query,
+        handle: query,
+      } satisfies ChannelDirectoryEntry,
+    ];
+  }
+
+  if (query.startsWith("!")) {
+    return [
+      {
+        kind: "group",
+        id: query,
+        name: query,
+      } satisfies ChannelDirectoryEntry,
+    ];
+  }
+
+  const joined = await fetchMatrixJson<MatrixJoinedRoomsResponse>({
+    homeserver: auth.homeserver,
+    accessToken: auth.accessToken,
+    path: "/_matrix/client/v3/joined_rooms",
+  });
+  const rooms = joined.joined_rooms ?? [];
+  const results: ChannelDirectoryEntry[] = [];
+
+  for (const roomId of rooms) {
+    const name = await fetchMatrixRoomName(auth.homeserver, auth.accessToken, roomId);
+    if (!name) continue;
+    if (!name.toLowerCase().includes(query)) continue;
+    results.push({
+      kind: "group",
+      id: roomId,
+      name,
+      handle: `#${name}`,
+    });
+    if (results.length >= limit) break;
+  }
+
+  return results;
+}