Fix/embedded chat channelname not switching

.gitignore

@@ -1,6 +1,9 @@
 node_modules
 .parcel-cache
 
+.env
+.env.local
+.env.*.local
 
 # yarn
 .pnp.*

packages/api/src/EmbeddedChatApi.ts

@@ -473,7 +473,16 @@ export default class EmbeddedChatApi {
 
   async channelInfo() {
     try {
-      const { userId, authToken } = (await this.auth.getCurrentUser()) || {};
+      const currentUser = await this.auth.getCurrentUser();
+      if (!currentUser || !currentUser.authToken || !currentUser.userId) {
+        return {
+          success: false,
+          error: "User not authenticated",
+          errorType: "unauthorized",
+        };
+      }
+
+      const { userId, authToken } = currentUser;
       const response = await fetch(
         `${this.host}/api/v1/rooms.info?roomId=${this.rid}`,
         {
@@ -488,6 +497,50 @@ export default class EmbeddedChatApi {
       return await response.json();
     } catch (err) {
       console.error(err);
+      return {
+        success: false,
+        error: err instanceof Error ? err.message : "Unknown error",
+      };
+    }
+  }
+
+  async getRoomIdByName(channelName: string): Promise<string | null> {
+    try {
+      const currentUser = await this.auth.getCurrentUser();
+      if (!currentUser || !currentUser.authToken || !currentUser.userId) {
+        return null;
+      }
+
+      const { userId, authToken } = currentUser;
+      const response = await fetch(
+        `${this.host}/api/v1/rooms.info?roomName=${encodeURIComponent(
+          channelName
+        )}`,
+        {
+          headers: {
+            "Content-Type": "application/json",
+            "X-Auth-Token": authToken,
+            "X-User-Id": userId,
+          },
+          method: "GET",
+        }
+      );
+
+      if (!response.ok) {
+        if (response.status === 401) {
+          return null;
+        }
+        return null;
+      }
+
+      const data = await response.json();
+      if (data?.success === true && data?.room?._id) {
+        return data.room._id;
+      }
+      return null;
+    } catch (err) {
+      console.error(err);
+      return null;
     }
   }
 

packages/react/src/hooks/useRoomId.js

@@ -0,0 +1,93 @@
+import { useState, useEffect } from 'react';
+import { EmbeddedChatApi } from '@embeddedchat/api';
+
+/**
+ * Custom hook to resolve roomId from either explicit roomId or channelName.
+ * Returns an object with:
+ * - roomId: The resolved room ID, or null if resolution is pending/failed
+ * - error: Error message if resolution failed, or null if successful/pending
+ *
+ * @param {string|null|undefined} roomId - Explicit room ID
+ * @param {string|null|undefined} channelName - Channel name to resolve
+ * @param {string} host - Rocket.Chat host URL
+ * @param {Function} getToken - Token getter function
+ * @param {Function} deleteToken - Token deleter function
+ * @param {Function} saveToken - Token saver function
+ * @param {boolean} isUserAuthenticated - Whether user is authenticated
+ * @returns {{roomId: string|null, error: string|null}} - Resolved room ID and error state
+ */
+export const useRoomId = (
+  roomId,
+  channelName,
+  host,
+  getToken,
+  deleteToken,
+  saveToken,
+  isUserAuthenticated
+) => {
+  const [resolvedRoomId, setResolvedRoomId] = useState(() => {
+    if (roomId) {
+      return { roomId, error: null };
+    }
+    return channelName
+      ? { roomId: 'GENERAL', error: null }
+      : { roomId: 'GENERAL', error: null };
+  });
+
+  useEffect(() => {
+    const resolveRoomId = async () => {
+      if (roomId) {
+        setResolvedRoomId({ roomId, error: null });
+        return;
+      }
+
+      if (channelName) {
+        if (!isUserAuthenticated) {
+          setResolvedRoomId({ roomId: 'GENERAL', error: null });
+          return;
+        }
+
+        try {
+          const tempRCInstance = new EmbeddedChatApi(host, 'GENERAL', {
+            getToken,
+            deleteToken,
+            saveToken,
+          });
+          const roomIdFromName = await tempRCInstance.getRoomIdByName(
+            channelName
+          );
+          await tempRCInstance.close().catch(console.error);
+          if (roomIdFromName) {
+            setResolvedRoomId({ roomId: roomIdFromName, error: null });
+          } else {
+            setResolvedRoomId({
+              roomId: null,
+              error: `Channel "${channelName}" not found or you don't have access to it.`,
+            });
+          }
+        } catch (error) {
+          setResolvedRoomId({
+            roomId: null,
+            error: `Failed to resolve channel "${channelName}": ${
+              error.message || 'Unknown error'
+            }`,
+          });
+        }
+      } else {
+        setResolvedRoomId({ roomId: 'GENERAL', error: null });
+      }
+    };
+
+    resolveRoomId();
+  }, [
+    roomId,
+    channelName,
+    host,
+    getToken,
+    deleteToken,
+    saveToken,
+    isUserAuthenticated,
+  ]);
+
+  return resolvedRoomId;
+};