Matrix: Create group conversation

src/lib/chat/index.ts

@@ -51,6 +51,7 @@ export interface IChatClient {
     file?: FileUploadResult,
     optimisticId?: string
   ) => Promise<MessagesResponse>;
+  fetchConversationsWithUsers: (users: User[]) => Promise<Partial<Channel>[]>;
 }
 
 export class Chat {
@@ -101,6 +102,10 @@ export class Chat {
     return this.client.sendMessagesByChannelId(channelId, message, mentionedUserIds, parentMessage, file, optimisticId);
   }
 
+  async fetchConversationsWithUsers(users: User[]): Promise<any[]> {
+    return this.client.fetchConversationsWithUsers(users);
+  }
+
   initChat(events: RealtimeChatEvents): void {
     this.client.init(events);
   }

src/lib/chat/matrix-client.ts

@@ -199,6 +199,32 @@ export class MatrixClient implements IChatClient {
     };
   }
 
+  async fetchConversationsWithUsers(users: User[]) {
+    const userMatrixIds = users.map((u) => u.matrixId);
+    const rooms = await this.getFilteredRooms(this.isConversation);
+    const matches = [];
+    for (const room of rooms) {
+      const roomMembers = room
+        .getMembers()
+        .filter((m) => m.membership === 'join' || m.membership === 'invite')
+        .map((m) => m.userId);
+      if (this.arraysMatch(roomMembers, userMatrixIds)) {
+        matches.push(room);
+      }
+    }
+    return matches.map(this.mapConversation);
+  }
+
+  arraysMatch(a, b) {
+    if (a.length !== b.length) {
+      return false;
+    }
+
+    a.sort();
+    b.sort();
+    return a.every((val, idx) => val === b[idx]);
+  }
+
   get isDisconnected() {
     return this.connectionStatus === ConnectionStatus.Disconnected;
   }

src/lib/chat/sendbird-client.ts

@@ -14,6 +14,7 @@ import { uploadImage, createConversation as createConversationMessageApi } from
 import { MemberNetworks } from '../../store/users/types';
 import { DirectMessage } from '../../store/channels-list/types';
 import { MentionableUser } from '../../store/channels/api';
+import { Channel } from '../../store/channels';
 
 export class SendbirdClient implements IChatClient {
   sendbird: SendbirdGroupChat = null;
@@ -143,6 +144,12 @@ export class SendbirdClient implements IChatClient {
     return sendMessagesByChannelId(channelId, message, mentionedUserIds, parentMessage, file, optimisticId);
   }
 
+  async fetchConversationsWithUsers(users: User[]): Promise<any[]> {
+    const userIds = users.map((u) => u.userId);
+    const response = await get<Channel[]>('/conversations', { userIds });
+    return response.body;
+  }
+
   private initSessionHandler(events: RealtimeChatEvents) {
     const sessionHandler = new SessionHandler({
       onSessionClosed: () => {

src/store/channels-list/api.ts

@@ -27,11 +27,6 @@ export async function createConversation(
   return directMessages.body;
 }
 
-export async function fetchConversationsWithUsers(userIds: string[]): Promise<any[]> {
-  const response = await get<Channel[]>('/conversations', { userIds });
-  return response.body;
-}
-
 interface ImageApiUploadResponse {
   apiUrl: string;
   query: string;

src/store/create-conversation/saga.test.ts

@@ -12,9 +12,9 @@ import {
 import { setGroupCreating, Stage, setFetchingConversations, setStage } from '.';
 
 import { channelsReceived, createConversation as performCreateConversation } from '../channels-list/saga';
-import { fetchConversationsWithUsers } from '../channels-list/api';
 import { rootReducer } from '../reducer';
 import { StoreBuilder } from '../test/store';
+import { chat } from '../../lib/chat';
 
 describe('create conversation saga', () => {
   describe('startConversation', () => {
@@ -77,32 +77,45 @@ describe('create conversation saga', () => {
   });
 
   describe(performGroupMembersSelected, () => {
+    const chatClient = {
+      fetchConversationsWithUsers: () => [],
+    };
+
     function subject(...args: Parameters<typeof expectSaga>) {
       return expectSaga(...args)
-        .provide([[matchers.call.fn(channelsReceived), null]])
+        .provide([
+          [matchers.call.fn(channelsReceived), null],
+          [matchers.call.fn(chat.get), chatClient],
+          [matchers.call.fn(chatClient.fetchConversationsWithUsers), []],
+        ])
         .withReducer(rootReducer, defaultState());
     }
 
-    it('includes current user when fetching conversations', async () => {
-      const initialState = new StoreBuilder().withCurrentUser({ id: 'current-user-id' });
+    it('calls the chat api with all users', async () => {
+      const initialState = new StoreBuilder()
+        .withCurrentUser({ id: 'current-user-id' })
+        .withUsers({ userId: 'other-user-id' });
 
-      return expectSaga(performGroupMembersSelected, [{ value: 'other-user-id' }] as any)
-        .provide([[matchers.call.fn(fetchConversationsWithUsers), []]])
+      return subject(performGroupMembersSelected, [{ value: 'other-user-id' }] as any)
         .withReducer(rootReducer, initialState.build())
-        .call(fetchConversationsWithUsers, ['current-user-id', 'other-user-id'])
+        .call.like({
+          context: chatClient,
+          fn: chatClient.fetchConversationsWithUsers,
+          args: [[{ userId: 'current-user-id' }, { userId: 'other-user-id' }]],
+        })
         .run();
     });
 
     it('saves first existing conversation', async () => {
       await subject(performGroupMembersSelected, [])
-        .provide([[matchers.call.fn(fetchConversationsWithUsers), [{ id: 'convo-1' }, { id: 'convo-2' }]]])
+        .provide([[matchers.call.fn(chatClient.fetchConversationsWithUsers), [{ id: 'convo-1' }, { id: 'convo-2' }]]])
         .call(channelsReceived, { payload: { channels: [{ id: 'convo-1' }] } })
         .run();
     });
 
     it('opens the existing conversation', async () => {
       const { storeState } = await subject(performGroupMembersSelected, [])
-        .provide([[matchers.call.fn(fetchConversationsWithUsers), [{ id: 'convo-1' }]]])
+        .provide([[matchers.call.fn(chatClient.fetchConversationsWithUsers), [{ id: 'convo-1' }]]])
         .run();
 
       expect(storeState.chat.activeConversationId).toBe('convo-1');
@@ -112,7 +125,7 @@ describe('create conversation saga', () => {
       const initialState = defaultState({ stage: Stage.StartGroupChat });
 
       const { returnValue } = await subject(performGroupMembersSelected, [])
-        .provide([[matchers.call.fn(fetchConversationsWithUsers), [{ id: 'convo-1' }]]])
+        .provide([[matchers.call.fn(chatClient.fetchConversationsWithUsers), [{ id: 'convo-1' }]]])
         .withReducer(rootReducer, initialState)
         .run();
 
@@ -124,7 +137,7 @@ describe('create conversation saga', () => {
       const initialState = defaultState({ stage: Stage.StartGroupChat });
 
       const { returnValue, storeState } = await subject(performGroupMembersSelected, users)
-        .provide([[matchers.call.fn(fetchConversationsWithUsers), []]])
+        .provide([[matchers.call.fn(chatClient.fetchConversationsWithUsers), []]])
         .withReducer(rootReducer, initialState)
         .run();
 

src/store/create-conversation/saga.ts

@@ -1,10 +1,11 @@
 import { put, call, select, race, take, fork, spawn } from 'redux-saga/effects';
 import { SagaActionTypes, Stage, setFetchingConversations, setGroupCreating, setGroupUsers, setStage } from '.';
 import { channelsReceived, createConversation as performCreateConversation } from '../channels-list/saga';
-import { fetchConversationsWithUsers } from '../channels-list/api';
 import { setactiveConversationId } from '../chat';
 import { Events, getAuthChannel } from '../authentication/channels';
 import { currentUserSelector } from '../authentication/selectors';
+import { Chat, chat } from '../../lib/chat';
+import { denormalize as denormalizeUsers } from '../users';
 
 export function* reset() {
   yield put(setGroupUsers([]));
@@ -24,16 +25,19 @@ export function* groupMembersSelected(action) {
   }
 }
 
-export function* performGroupMembersSelected(users: { value: string; label: string; image?: string }[]) {
+export function* performGroupMembersSelected(userSelections: { value: string; label: string; image?: string }[]) {
   const currentUser = yield select(currentUserSelector);
   const userIds = [
     currentUser.id,
-    ...users.map((o) => o.value),
+    ...userSelections.map((o) => o.value),
   ];
-  const existingConversations = yield call(fetchConversationsWithUsers, userIds);
+  const users = yield select((state) => denormalizeUsers(userIds, state));
+
+  const chatClient: Chat = yield call(chat.get);
+  const existingConversations = yield call([chatClient, chatClient.fetchConversationsWithUsers], users);
 
   if (existingConversations.length === 0) {
-    yield put(setGroupUsers(users));
+    yield put(setGroupUsers(userSelections));
     return Stage.GroupDetails;
   } else {
     const selectedConversation = existingConversations[0];

src/store/test/store.ts

@@ -52,6 +52,7 @@ export class StoreBuilder {
 
   withCurrentUser(user: Partial<AuthenticatedUser>) {
     this.currentUser = { ...DEFAULT_USER_ATTRS, ...user };
+    this.users.push({ userId: user.id });
     return this;
   }