MM-22706: pass along set_online flag in websocket response (#14591)

* MM-22706: pass along set_online flag in websocket response

To let the client know whether a user has created a post without
being online or not, we get the set_online query param and
pass it down to the websocket event being passed down to the client.

With this PR, the "data" field of the `posted` event will contain
a `set_online` boolean field set to true/false depending on the
query_param set_online value set in the createPost call.

* Setting to false for auto responder

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

api4/post.go

@@ -67,14 +67,6 @@ func createPost(c *Context, w http.ResponseWriter, r *http.Request) {
 		post.CreateAt = 0
 	}
 
-	rp, err := c.App.CreatePostAsUser(c.App.PostWithProxyRemovedFromImageURLs(post), c.App.Session().Id)
-	if err != nil {
-		c.Err = err
-		return
-	}
-	auditRec.Success()
-	auditRec.AddMeta("post", rp) // overwrite meta
-
 	setOnline := r.URL.Query().Get("set_online")
 	setOnlineBool := true // By default, always set online.
 	var err2 error
@@ -85,6 +77,15 @@ func createPost(c *Context, w http.ResponseWriter, r *http.Request) {
 			setOnlineBool = true // Set online nevertheless.
 		}
 	}
+
+	rp, err := c.App.CreatePostAsUser(c.App.PostWithProxyRemovedFromImageURLs(post), c.App.Session().Id, setOnlineBool)
+	if err != nil {
+		c.Err = err
+		return
+	}
+	auditRec.Success()
+	auditRec.AddMeta("post", rp) // overwrite meta
+
 	if setOnlineBool {
 		c.App.SetStatusOnline(c.App.Session().UserId, false)
 	}