import express, { Router } from "express";
import AppMaster from "../master";
import AppMasterMiddleware,{AppMasterMiddlewareConfig} from "../middleware";
import * as ob from "@onebro/ob-common";

export type AppMasterRouterConstructor = (m:AppMaster) => Promise<Router>;
export const AppMasterRouter = async (config:AppMasterMiddlewareConfig,main:AppMasterRouterConstructor,m:AppMaster) => {
  const {db,events} = m;
  const app = express();
  app.disable("x-powered-by");
  const middleware = await AppMasterMiddleware.init();
  if(config){
    const custom = config.custom;
    const customNames = Object.keys(custom);
    const setCustomBefore = (k:string) => {
      customNames.forEach(s => {
        const handler = custom[s];
        handler.before == k?app.use(handler.func(m)):null;});};
    const setCustomAfter = (k:string) => {
      customNames.forEach(s => {
        const handler = custom[s];
        handler.after == k?app.use(handler.func(m)):null;});};
    for(const k in config){
      if(k !== "custom"){
        if(k == "main"){app.use(m.vars.entry,main?await main(m):Router());}
        else{
          const opts:any = config[k as keyof AppMasterMiddlewareConfig];
          const setter = middleware[k as keyof AppMasterMiddleware];
          setCustomBefore(k);
          await setter?setter(app,opts,m):null;
          setCustomAfter(k);}}}}
  await middleware.pageNotFound(app,null,m);
  await middleware.finalHandler(app,null,m);
  //ob.ok("AppMasterRouter:",true);
  return app;};
export default AppMasterRouter;