import express from "express";
import * as dal from "../dal/staticDal.js";

const router = express.Router();

router.get("/routes",async (req, res) => {
  const routes = await dal.getRoutes();

  res.json({meta: {returned: routes.length}, data: routes});
});

router.get("/routes/:routeId", (req, res) => {
  const routeId = req.params.routeId;
  const route = dal.getRouteById(routeId);

  if (!route) return res.status(404).json({error: "Route Was Not Found"});
  const stations = dal.getStopsByRoute(routeId);

  res.json({data: {route, stations}});
});

router.get("/route/:routeId", (req, res) => {
  const routeId = req.params.routeId;
  const route = dal.getRouteById(routeId);

  if (!route) return res.status(404).json({error: "Route Was Not Found"});
  const stations = dal.getStopsByRoute(routeId);
  
  res.json({data: {route, stations}});
});

router.get("/routepaths/:routeId", (req, res) => {
  const routeId = req.params.routeId;
  const rp = dal.getRoutePath(routeId);

  if (!rp) return res.status(404).json({error: "RoutePath Was Not Found"});
  res.json({meta: {routeId: String(routeId), returned: Array.isArray(rp) ? rp.length : 0}, data: rp});
});

router.get("/routes/:routeId/stations", (req, res) => {
  const routeId = req.params.routeId;
  const stations = dal.getStopsByRoute(routeId);

  res.json({meta: {routeId: String(routeId), returned: stations.length}, data: stations});
});

router.get("/stops/:routeId", (req, res) => {
  const routeId = req.params.routeId;
  const stations = dal.getStopsByRoute(routeId);
  console.log(stations);
  res.json({meta: {routeId: String(routeId), returned: stations.length}, data: stations});
});

router.get("/stations", (req, res) => {
  const route = req.query.route;
  const stations = route ? dal.getStopsByRoute(route) : dal.getStations();

  res.json({meta: {returned: stations.length}, data: stations});
});

router.get("/station/:stationId", (req, res) => {
  const stationId = req.params.stationId;
  const station = dal.getStationById(stationId);

  if (!station) return res.status(404).json({error: "Station Was Not Found"});
  res.json({data: station});
});

export default router;