WIP for finding DM room

src/domain/session/rightpanel/MemberDetailsViewModel.js

@@ -83,7 +83,13 @@ export class MemberDetailsViewModel extends ViewModel {
     }
 
     async openDirectMessage() {
-        const roomBeingCreated = await this._session.createRoom(RoomType.DirectMessage, undefined, undefined, undefined, [this.userId]);
-        this.navigation.push("room", roomBeingCreated.localId);
+        const room = this._session.findDirectMessageForUserId(this.userId);
+        let roomId = room?.id;
+        if (!roomId) {
+            const roomBeingCreated = await this._session.createRoom(
+                RoomType.DirectMessage, undefined, undefined, undefined, [this.userId], {loadProfiles: true});
+            roomId = roomBeingCreated.localId;
+        }
+        this.navigation.push("room", roomId);
     }
 }

src/matrix/Session.js

@@ -537,6 +537,19 @@ export class Session {
         return this._rooms;
     }
 
+    findDirectMessageForUserId(userId) {
+        for (const [,room] of this._rooms) {
+            if (room.isDirectMessageForUserId(userId)) {
+                return room;
+            }
+        }
+        for (const [,invite] of this._invites) {
+            if (invite.isDirectMessageForUserId(userId)) {
+                return invite;
+            }
+        }
+    }
+
     /** @internal */
     createJoinedRoom(roomId, pendingEvents) {
         return new Room({

src/matrix/room/BaseRoom.js

@@ -420,6 +420,10 @@ export class BaseRoom extends EventEmitter {
         return this._summary.data.membership;
     }
 
+    isDirectMessageForUserId(userId) {
+        return this._summary.data.dmUserId === userId;
+    }
+
     async _loadPowerLevels() {
         const txn = await this._storage.readTxn([this._storage.storeNames.roomState]);
         const powerLevelsState = await txn.roomState.get(this._roomId, "m.room.power_levels", "");

src/matrix/room/Invite.js

@@ -73,6 +73,10 @@ export class Invite extends EventEmitter {
         return this._inviter;
     }
 
+    isDirectMessageForUserId(userId) {
+        return this.isDirectMessage && this._inviter.userId === userId;
+    }
+
     get isPublic() {
         return this._inviteData.joinRule === "public";
     }