MM-60124-emit and read create scheduled post WS event (#28844)

* MM-60124-emit and read create scheduled post WS event

* fix unit test; reorder get team id logic; use userid for ws events

* MM-60145 - ws events on update scheduled posts (#28871)

* MM-60145 - ws events on update scheduled posts

* MM-60147 - ws events on delete scheduled posts (#28872)

* MM-60147 - ws events on delete scheduled posts

* remove unnecessary channelID

* remove unnecesary memoization

server/channels/api4/scheduled_post.go

@@ -61,6 +61,8 @@ func createSchedulePost(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	connectionID := r.Header.Get(model.ConnectionId)
+
 	var scheduledPost model.ScheduledPost
 	if err := json.NewDecoder(r.Body).Decode(&scheduledPost); err != nil {
 		c.SetInvalidParamWithErr("schedule_post", err)
@@ -78,7 +80,7 @@ func createSchedulePost(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	createdScheduledPost, appErr := c.App.SaveScheduledPost(c.AppContext, &scheduledPost)
+	createdScheduledPost, appErr := c.App.SaveScheduledPost(c.AppContext, &scheduledPost, connectionID)
 	if appErr != nil {
 		c.Err = appErr
 		return
@@ -145,6 +147,8 @@ func updateScheduledPost(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	connectionID := r.Header.Get(model.ConnectionId)
+
 	scheduledPostId := mux.Vars(r)["scheduled_post_id"]
 	if scheduledPostId == "" {
 		c.SetInvalidURLParam("scheduled_post_id")
@@ -172,7 +176,7 @@ func updateScheduledPost(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	userId := c.AppContext.Session().UserId
-	updatedScheduledPost, appErr := c.App.UpdateScheduledPost(c.AppContext, userId, &scheduledPost)
+	updatedScheduledPost, appErr := c.App.UpdateScheduledPost(c.AppContext, userId, &scheduledPost, connectionID)
 	if appErr != nil {
 		c.Err = appErr
 		return