feat: cache for publish widget

plugins/store.client.ts

@@ -1,5 +1,7 @@
 import { login as loginMasto } from 'masto'
-import type { UserLogin } from '~/types'
+import type { ServerInfo, UserLogin } from '~/types'
+
+const ServerInfoTTL = 60 * 60 * 1000 * 12 // 12 hour
 
 function createClientState() {
   const { server, token } = useAppCookies()
@@ -43,10 +45,39 @@ function createClientState() {
     return true
   }
 
+  const serverInfos = useLocalStorage<Record<string, ServerInfo>>('nuxtodon-server-info', {})
+
+  async function fetchServerInfo(server: string) {
+    if (!serverInfos.value[server]) {
+      // @ts-expect-error init
+      serverInfos.value[server] = {
+        timeUpdated: 0,
+        server,
+      }
+    }
+    if (serverInfos.value[server].timeUpdated + ServerInfoTTL < Date.now()) {
+      const masto = await useMasto()
+      await Promise.allSettled([
+        masto.instances.fetch().then((r) => {
+          Object.assign(serverInfos.value[server], r)
+        }),
+        masto.customEmojis.fetchAll().then((r) => {
+          serverInfos.value[server].customEmojis = Object.fromEntries(r.map(i => [i.shortcode, i]))
+        }),
+      ])
+    }
+    return serverInfos.value[server]
+  }
+
+  if (server.value)
+    fetchServerInfo(server.value)
+
   return {
     currentUser,
     accounts,
     login,
+    serverInfos,
+    fetchServerInfo,
   }
 }