refactor: dedupe feishu and bluebubbles lowercase helpers

extensions/feishu/src/conversation-id.ts

@@ -1,3 +1,5 @@
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
+
 export type FeishuGroupSessionScope =
   | "group"
   | "group_sender"
@@ -50,7 +52,7 @@ export function parseFeishuTargetId(raw: unknown): string | undefined {
   if (!withoutProvider) {
     return undefined;
   }
-  const lowered = withoutProvider.toLowerCase();
+  const lowered = normalizeLowercaseStringOrEmpty(withoutProvider);
   for (const prefix of ["chat:", "group:", "channel:", "user:", "dm:", "open_id:"]) {
     if (lowered.startsWith(prefix)) {
       return normalizeText(withoutProvider.slice(prefix.length));
@@ -68,7 +70,7 @@ export function parseFeishuDirectConversationId(raw: unknown): string | undefine
   if (!withoutProvider) {
     return undefined;
   }
-  const lowered = withoutProvider.toLowerCase();
+  const lowered = normalizeLowercaseStringOrEmpty(withoutProvider);
   for (const prefix of ["user:", "dm:", "open_id:"]) {
     if (lowered.startsWith(prefix)) {
       return normalizeText(withoutProvider.slice(prefix.length));
@@ -176,8 +178,8 @@ export function buildFeishuModelOverrideParentCandidates(
   }
   const topicSenderMatch = rawId.match(/^(.+):topic:([^:]+):sender:([^:]+)$/i);
   if (topicSenderMatch) {
-    const chatId = topicSenderMatch[1]?.trim().toLowerCase();
-    const topicId = topicSenderMatch[2]?.trim().toLowerCase();
+    const chatId = normalizeLowercaseStringOrEmpty(topicSenderMatch[1]);
+    const topicId = normalizeLowercaseStringOrEmpty(topicSenderMatch[2]);
     if (chatId && topicId) {
       return [`${chatId}:topic:${topicId}`, chatId];
     }
@@ -185,12 +187,12 @@ export function buildFeishuModelOverrideParentCandidates(
   }
   const topicMatch = rawId.match(/^(.+):topic:([^:]+)$/i);
   if (topicMatch) {
-    const chatId = topicMatch[1]?.trim().toLowerCase();
+    const chatId = normalizeLowercaseStringOrEmpty(topicMatch[1]);
     return chatId ? [chatId] : [];
   }
   const senderMatch = rawId.match(/^(.+):sender:([^:]+)$/i);
   if (senderMatch) {
-    const chatId = senderMatch[1]?.trim().toLowerCase();
+    const chatId = normalizeLowercaseStringOrEmpty(senderMatch[1]);
     return chatId ? [chatId] : [];
   }
   return [];

extensions/feishu/src/directory.ts

@@ -42,7 +42,11 @@ export async function listFeishuDirectoryPeersLive(params: {
     for (const user of response.data?.items ?? []) {
       if (user.open_id) {
         const name = user.name || "";
-        if (!q || user.open_id.toLowerCase().includes(q) || name.toLowerCase().includes(q)) {
+        if (
+          !q ||
+          normalizeLowercaseStringOrEmpty(user.open_id).includes(q) ||
+          normalizeLowercaseStringOrEmpty(name).includes(q)
+        ) {
           peers.push({
             kind: "user",
             id: user.open_id,
@@ -95,7 +99,11 @@ export async function listFeishuDirectoryGroupsLive(params: {
     for (const chat of response.data?.items ?? []) {
       if (chat.chat_id) {
         const name = chat.name || "";
-        if (!q || chat.chat_id.toLowerCase().includes(q) || name.toLowerCase().includes(q)) {
+        if (
+          !q ||
+          normalizeLowercaseStringOrEmpty(chat.chat_id).includes(q) ||
+          normalizeLowercaseStringOrEmpty(name).includes(q)
+        ) {
           groups.push({
             kind: "group",
             id: chat.chat_id,

extensions/feishu/src/media.ts

@@ -4,6 +4,7 @@ import { Readable } from "stream";
 import type * as Lark from "@larksuiteoapi/node-sdk";
 import { mediaKindFromMime } from "openclaw/plugin-sdk/media-runtime";
 import { withTempDownloadPath } from "openclaw/plugin-sdk/temp-path";
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import type { ClawdbotConfig } from "../runtime-api.js";
 import { resolveFeishuRuntimeAccount } from "./accounts.js";
 import { createFeishuClient } from "./client.js";
@@ -106,9 +107,8 @@ function readHeaderValue(
   if (!headers) {
     return undefined;
   }
-  const target = name.toLowerCase();
   for (const [key, value] of Object.entries(headers)) {
-    if (key.toLowerCase() !== target) {
+    if (normalizeLowercaseStringOrEmpty(key) !== normalizeLowercaseStringOrEmpty(name)) {
       continue;
     }
     if (typeof value === "string" && value.trim()) {
@@ -496,7 +496,7 @@ export async function sendFileFeishu(params: {
 export function detectFileType(
   fileName: string,
 ): "opus" | "mp4" | "pdf" | "doc" | "xls" | "ppt" | "stream" {
-  const ext = path.extname(fileName).toLowerCase();
+  const ext = normalizeLowercaseStringOrEmpty(path.extname(fileName));
   switch (ext) {
     case ".opus":
     case ".ogg":
@@ -526,7 +526,7 @@ function resolveFeishuOutboundMediaKind(params: { fileName: string; contentType?
   msgType: "image" | "file" | "audio" | "media";
 } {
   const { fileName, contentType } = params;
-  const ext = path.extname(fileName).toLowerCase();
+  const ext = normalizeLowercaseStringOrEmpty(path.extname(fileName));
   const mimeKind = mediaKindFromMime(contentType);
 
   const isImageExt = [".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp", ".ico", ".tiff"].includes(

extensions/feishu/src/outbound.ts

@@ -1,6 +1,7 @@
 import fs from "fs";
 import path from "path";
 import { createAttachedChannelResultAdapter } from "openclaw/plugin-sdk/channel-send-result";
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import { resolveFeishuAccount } from "./accounts.js";
 import { createFeishuClient } from "./client.js";
 import { parseFeishuCommentTarget } from "./comment-target.js";
@@ -27,7 +28,7 @@ function normalizePossibleLocalImagePath(text: string | undefined): string | nul
     return null;
   }
 
-  const ext = path.extname(raw).toLowerCase();
+  const ext = normalizeLowercaseStringOrEmpty(path.extname(raw));
   const isImageExt = [".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp", ".ico", ".tiff"].includes(
     ext,
   );

extensions/feishu/src/policy.ts

@@ -71,7 +71,9 @@ export function resolveFeishuGroupConfig(params: {
   }
 
   const lowered = normalizeOptionalLowercaseString(groupId) ?? "";
-  const matchKey = Object.keys(groups).find((key) => key.toLowerCase() === lowered);
+  const matchKey = Object.keys(groups).find(
+    (key) => normalizeOptionalLowercaseString(key) === lowered,
+  );
   if (matchKey) {
     return groups[matchKey];
   }

extensions/feishu/src/post.ts

@@ -1,3 +1,4 @@
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import { isRecord } from "./comment-shared.js";
 import { normalizeFeishuExternalKey } from "./external-keys.js";
 
@@ -133,7 +134,7 @@ function renderElement(
     return escapeMarkdownText(toStringOrEmpty(element));
   }
 
-  const tag = toStringOrEmpty(element.tag).toLowerCase();
+  const tag = normalizeLowercaseStringOrEmpty(toStringOrEmpty(element.tag));
   switch (tag) {
     case "text":
       return renderTextElement(element);

extensions/feishu/src/send.ts

@@ -1,6 +1,7 @@
 import { resolveMarkdownTableMode } from "openclaw/plugin-sdk/config-runtime";
 import {
   convertMarkdownTables,
+  normalizeLowercaseStringOrEmpty,
   normalizeOptionalLowercaseString,
 } from "openclaw/plugin-sdk/text-runtime";
 import type { ClawdbotConfig } from "../runtime-api.js";
@@ -34,7 +35,7 @@ function shouldFallbackFromReplyTarget(response: { code?: number; msg?: string }
   if (response.code !== undefined && WITHDRAWN_REPLY_ERROR_CODES.has(response.code)) {
     return true;
   }
-  const msg = response.msg?.toLowerCase() ?? "";
+  const msg = normalizeLowercaseStringOrEmpty(response.msg);
   return msg.includes("withdrawn") || msg.includes("not found");
 }