fix: update and propagate groupChannel state properly (#1298)

### Description & Changelog
https://sendbird.slack.com/archives/C05AN1T4Z5Z/p1736410875662099

### Related issues
* https://sendbird.atlassian.net/browse/CLNP-6087
* https://sendbird.atlassian.net/browse/CLNP-6089
* https://sendbird.atlassian.net/browse/CLNP-6090
* https://sendbird.atlassian.net/browse/CLNP-6091
* https://sendbird.atlassian.net/browse/CLNP-6092

Author: git-babel

src/modules/GroupChannel/context/GroupChannelProvider.tsx

@@ -163,12 +163,7 @@ const GroupChannelManager :React.FC<React.PropsWithChildren<GroupChannelProvider
       onBackClick?.();
     },
     onChannelUpdated: (channel) => {
-      // Note: this shouldn't happen ideally, but it happens on re-rendering GroupChannelManager
-      // even though the next channel and the current channel are the same.
-      // So added this condition to check if they are the same to prevent unnecessary calling setCurrentChannel action
-      if (!state.currentChannel?.isEqual(channel)) {
-        actions.setCurrentChannel(channel);
-      }
+      actions.setCurrentChannel(channel);
     },
     logger: logger as any,
   });

src/modules/GroupChannel/context/hooks/useGroupChannel.ts

@@ -1,4 +1,4 @@
-import { useContext, useMemo, useCallback } from 'react';
+import { useContext, useCallback, useMemo } from 'react';
 import type { GroupChannel } from '@sendbird/chat/groupChannel';
 import type { SendbirdError } from '@sendbird/chat';
 import { useSyncExternalStore } from 'use-sync-external-store/shim';
@@ -165,7 +165,7 @@ export const useGroupChannel = () => {
       nicknamesMap: new Map(
         channel.members.map(({ userId, nickname }) => [userId, nickname]),
       ),
-    }));
+    }), true);
   }, []);
 
   const handleChannelError = useCallback((error: SendbirdError) => {

src/modules/GroupChannelList/context/GroupChannelListProvider.tsx

@@ -108,7 +108,7 @@ export const GroupChannelListManager: React.FC<GroupChannelListProviderProps> =
 }: GroupChannelListProviderProps) => {
   const { state: sendbirdState } = useSendbird();
   const { config, stores } = sendbirdState;
-  const { state } = useGroupChannelList();
+  const { state, actions } = useGroupChannelList();
   const { updateState } = useGroupChannelListStore();
   const { sdkStore } = stores;
 
@@ -126,6 +126,9 @@ export const GroupChannelListManager: React.FC<GroupChannelListProviderProps> =
         if (url === selectedChannelUrl) onChannelSelect(null);
       });
     },
+    onChannelsUpdated: () => {
+      actions.setGroupChannels(groupChannels);
+    },
   });
 
   const { refreshing, initialized, groupChannels, refresh, loadMore } = channelListDataSource;

src/modules/GroupChannelList/context/useGroupChannelList.ts

@@ -1,14 +1,22 @@
 import { useSyncExternalStore } from 'use-sync-external-store/shim';
-import { useMemo, useContext } from 'react';
+import { useMemo, useContext, useCallback } from 'react';
 import { GroupChannelListState, GroupChannelListContext } from './GroupChannelListProvider';
 
 export const useGroupChannelList = () => {
   const store = useContext(GroupChannelListContext);
   if (!store) throw new Error('useGroupChannelList must be used within a GroupChannelListProvider');
 
+  const setGroupChannels = useCallback((channels) => {
+    store.setState(state => ({
+      ...state,
+      groupChannels: channels,
+    }), true);
+  }, []);
+
   const state: GroupChannelListState = useSyncExternalStore(store.subscribe, store.getState);
   const actions = useMemo(() => ({
-  }), [store]);
+    setGroupChannels,
+  }), [setGroupChannels]);
 
   return { state, actions };
 };

src/utils/storeManager.ts

@@ -3,7 +3,7 @@ import isEqual from 'lodash/isEqual';
 // Referrence: https://github.com/pmndrs/zustand
 export type Store<T> = {
   getState: () => T;
-  setState: (partial: Partial<T> | ((state: T) => Partial<T>)) => void;
+  setState: (partial: Partial<T> | ((state: T) => Partial<T>), force?: boolean) => void;
   subscribe: (listener: () => void) => () => void;
 };
 
@@ -30,7 +30,7 @@ export function createStore<T extends object>(initialState: T): Store<T> {
   const listeners = new Set<() => void>();
   let isUpdating = false;
 
-  const setState = (partial: Partial<T> | ((state: T) => Partial<T>)) => {
+  const setState = (partial: Partial<T> | ((state: T) => Partial<T>), force?: boolean) => {
     // Prevent nested updates
     if (isUpdating) return;
 
@@ -39,7 +39,7 @@ export function createStore<T extends object>(initialState: T): Store<T> {
       const nextState = typeof partial === 'function' ? partial(state) : partial;
       const hasChanged = hasStateChanged(state, nextState);
 
-      if (hasChanged) {
+      if (force || hasChanged) {
         state = { ...state, ...nextState };
         listeners.forEach((listener) => listener());
       }