const express = require("express");
const multer = require("multer");
const config = require("config");
const { version } = require("./package.json");

const dbHandler = require("./dbHandler.js");
const upload = multer({ dest: config.get("app.upload") });

const PUBLIC_PATH = `${__dirname}/../public`;

let server = undefined;

const configureRoutes = (app) => {
  app.get("/", (req, res) => {
    res.sendFile(`${PUBLIC_PATH}/index.html`);
  });

  app.post("/uploadMarker", upload.single("image"), (req, res) => {
    const data = req.body;
    image = req.file;

    // Extract marker data
    const newMarker = {
      name: data.name,
      description: data.description,
      filename: image.filename,
      long: data.long,
      lat: data.lat,
    };
    // Add marker to db
    dbHandler.addMarker(newMarker);
  });

  app.get("/fetchMarkers", (req, res) => {
    dbHandler.getAllMarkers((rows) => {
      res.status(200).json(rows);
    });
  });

  app.get("/updateMarkers", (req, res) => {
    const data = req.query;

    // data.fromDate comes as a string so we need to parse it before creating a date object based on it
    dbHandler.getUpdatedMarkers(new Date(Number(data.fromDate)), (rows) => {
      res.status(200).json(rows);
    });
  });

  app.get("/version", (req, res) => {
    res.json({ version });
  });
};

const configureExpress = () => {
  const app = express();
  const port = config.get("app.port");

  app.use(express.static(PUBLIC_PATH));
  app.use("/imgs", express.static(config.get("app.upload")));
  app.use(express.json()); // for json
  app.use(
    express.urlencoded({
      extended: true,
      limit: "12MB",
      parameterLimit: 100000,
    })
  ); // support encoded bodies

  configureRoutes(app);

  server = app.listen(port, "0.0.0.0", () => {
    console.log(`Example app listening on port ${port}`);
  });

  return app;
};

const main = () => {
  process.on("SIGINT", () => {
    server.close(() => {
      console.log("Successfully closed HTTP Server.");
    });
  });

  configureExpress();
};

main();