Implement GET teams/{team_id}/stats - apiv4 (#5453)

* api4 GET teams/{team_id}/stats

* api4 GET teams/{team_id}/stats

* moved TeamStats router to team.go

api4/team.go

@@ -19,9 +19,9 @@ func InitTeam() {
 	BaseRoutes.TeamsForUser.Handle("", ApiSessionRequired(getTeamsForUser)).Methods("GET")
 
 	BaseRoutes.Team.Handle("", ApiSessionRequired(getTeam)).Methods("GET")
+	BaseRoutes.Team.Handle("/stats", ApiHandler(getTeamStats)).Methods("GET")
 
 	BaseRoutes.TeamMember.Handle("", ApiSessionRequired(getTeamMember)).Methods("GET")
-
 }
 
 func createTeam(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -104,3 +104,23 @@ func getTeamMember(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 }
+
+func getTeamStats(c *Context, w http.ResponseWriter, r *http.Request) {
+	c.RequireTeamId()
+	if c.Err != nil {
+		return
+	}
+
+	if !app.SessionHasPermissionToTeam(c.Session, c.Params.TeamId, model.PERMISSION_VIEW_TEAM) {
+		c.SetPermissionError(model.PERMISSION_VIEW_TEAM)
+		return
+	}
+
+	if stats, err := app.GetTeamStats(c.Params.TeamId); err != nil {
+		c.Err = err
+		return
+	} else {
+		w.Write([]byte(stats.ToJson()))
+		return
+	}
+}