send and receive message

src/app/module/chat/data/data-source/room/room-memory-data-source.ts

@@ -0,0 +1,65 @@
+import { createAction, createFeatureSelector, createReducer, createSelector, on, props } from "@ngrx/store";
+import { TableRoom } from "./rooom-local-data-source.service";
+import { RoomOutPutDTO } from "../../dto/room/roomOutputDTO";
+
+
+export interface ChatRoom {
+  [roomId: string]: TableRoom[];
+}
+
+export interface RoomRemoteDataSourceState {
+  chatRooms: ChatRoom;
+}
+
+export const initialState: RoomRemoteDataSourceState = {
+  chatRooms: {
+    // add more rooms as needed
+  }
+};
+
+export const addMessage = createAction(
+  '[Chat] Add Message',
+  props<{ roomId: string; message: any }>()
+);
+
+export const addRoom = createAction(
+  '[Chat] Add Room',
+  props<RoomOutPutDTO>()
+);
+
+const _chatReducer = createReducer(
+  initialState,
+  on(addMessage, (state, { roomId, message }) => ({
+    ...state,
+    chatRooms: {
+      ...state.chatRooms,
+      [roomId]: [...(state.chatRooms[roomId] || []), message]
+    }
+  })),
+  on(addRoom, (state, roomData: RoomOutPutDTO) => ({
+    ...state,
+    chatRooms: {
+      ...state.chatRooms,
+      [roomData.data.roomName]: roomData.data
+    }
+  }))
+);
+
+export function chatReducer(state, action) {
+  return _chatReducer(state, action);
+}
+
+// Create a feature selector
+export const selectChatState = createFeatureSelector<RoomRemoteDataSourceState>('chat');
+
+// Create a selector for a specific room's messages
+export const selectMessagesByRoom = (roomId: string) => createSelector(
+  selectChatState,
+  (state: RoomRemoteDataSourceState) => state.chatRooms[roomId] || []
+);
+
+// Create a selector for the list of rooms
+export const selectAllRooms = createSelector(
+  selectChatState,
+  (state: RoomRemoteDataSourceState) => Object.keys(state.chatRooms)
+);