From e04463c143c4ed9e266f4b70a5b9d4fdeff63e4a Mon Sep 17 00:00:00 2001
From: Bruno Windels <bruno@windels.cloud>
Date: Mon, 7 Feb 2022 18:58:53 +0100
Subject: [PATCH] WIP for finding DM room

---
 .../session/rightpanel/MemberDetailsViewModel.js    | 10 ++++++++--
 src/matrix/Session.js                               | 13 +++++++++++++
 src/matrix/room/BaseRoom.js                         |  4 ++++
 src/matrix/room/Invite.js                           |  4 ++++
 4 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/src/domain/session/rightpanel/MemberDetailsViewModel.js b/src/domain/session/rightpanel/MemberDetailsViewModel.js
index b0573bfa..f56aac9a 100644
--- a/src/domain/session/rightpanel/MemberDetailsViewModel.js
+++ b/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);
     }
 }
diff --git a/src/matrix/Session.js b/src/matrix/Session.js
index 13901e6c..45cd9b19 100644
--- a/src/matrix/Session.js
+++ b/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({
diff --git a/src/matrix/room/BaseRoom.js b/src/matrix/room/BaseRoom.js
index ecd2d860..446c22d1 100644
--- a/src/matrix/room/BaseRoom.js
+++ b/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", "");
diff --git a/src/matrix/room/Invite.js b/src/matrix/room/Invite.js
index da721c77..18bb7b8d 100644
--- a/src/matrix/room/Invite.js
+++ b/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";
     }