batch requests

Author: 3kh0

lib/web/permissions.js

@@ -4,6 +4,7 @@ import { isGlobalAdmin, isWorkspaceAdmin } from "../perms.js";
 const SUPERADMINS = (process.env.SUPERADMINS || "").split(",").filter(Boolean);
 const CHANNEL_CACHE_TTL_MS = 5 * 60 * 1000;
 const channelInfoCache = new WeakMap();
+let catalogCache = { expiresAt: 0, promise: null };
 
 export const roleAbilities = {
   manager: [
@@ -46,6 +47,33 @@ function inheritedAbilities(globalAdmin, workspaceAdmin, superAdmin) {
   return abilities;
 }
 
+async function fetchChannelCatalog(client) {
+  const channels = new Map();
+  let cursor;
+  do {
+    const response = await client.conversations.list({
+      cursor,
+      exclude_archived: true,
+      limit: 1000,
+      types: "public_channel,private_channel",
+    });
+    for (const channel of response.channels || []) channels.set(channel.id, channel);
+    cursor = response.response_metadata?.next_cursor;
+  } while (cursor);
+  return channels;
+}
+
+function loadChannelCatalog(client) {
+  if (catalogCache.promise && catalogCache.expiresAt > Date.now()) return catalogCache.promise;
+
+  const promise = fetchChannelCatalog(client);
+  catalogCache = { expiresAt: Date.now() + CHANNEL_CACHE_TTL_MS, promise };
+  promise.catch(() => {
+    if (catalogCache.promise === promise) catalogCache = { expiresAt: 0, promise: null };
+  });
+  return promise;
+}
+
 function cachedChannelInfo(client, channelId) {
   let clientCache = channelInfoCache.get(client);
   if (!clientCache) {
@@ -93,12 +121,14 @@ export async function loadPermissions(client, userId, discoveryClient = client)
   if (globalAdmin) {
     for (const channelId of await listConfiguredChannelIds()) channelIds.add(channelId);
   }
+  const catalog = await loadChannelCatalog(discoveryClient);
   const visibleChannels = (
     await Promise.all(
       [...channelIds].map(async (channelId) => {
         const grant = grants.get(channelId);
-        const channel = await channelInfo(channelId, [client, discoveryClient]);
-        if (!channel && !grant) return null;
+        let channel = catalog.get(channelId);
+        if (!channel && grant) channel = await channelInfo(channelId, [client, discoveryClient]);
+        if (!channel && !grant && !globalAdmin) return null;
         if (channel?.is_archived && !grant) return null;
         return {
           ...grant,