import cookieParser from "cookie-parser";
import cors from "cors";
import express from "express";
import createError from "http-errors";
import { CastleAcDc } from "./index.js";
import fs from "fs"

import { router as apiRouter } from "./routes/api.mjs";

export const newExpressApp = (port: number | string | false, system: CastleAcDc) => {
  const app = express();

  app.set("port", port);
  app.use(cors());

  app.use(express.json());
  app.use(express.urlencoded({ extended: false }));
  app.use(cookieParser());

  const clientPath = system.clientPath();
  const indexHtml = fs.readFileSync(`${clientPath}/index.html`);
    app.use(express.static(clientPath));

  app.use("/api", apiRouter);

  app.get("*", (req: express.Request, res, next) => {
    res.writeHead(200, { "Content-Type": "text/html" });
    res.end(indexHtml);
  });

  // catch 404 and forward to error handler
  app.use(function (req, res, next) {
    next(createError(404));
  });

  // error handler
  app.use(function (err: any, req: any, res: any, next: any) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get("env") === "development" ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render("error");
  });
  return app;
};