const express = require('express')
var fs = require("fs");
var syncRequest = require("sync-request");
const app = express()
const port = 5243

app.get('/', (req, res) => {
  res.send('Hello!!!')
})


app.post("/track", function (req, res) {
    var updateFile = function (response, body, path) {
        if (body.status == 2)
        {
            var file = syncRequest("GET", body.url);
            fs.writeFileSync(path, file.getBody());
        }
        response.write("{\"error\":0}");
        response.end();
    }
    var readbody = function (request, response, path) {
        var content = "";
        request.on("data", function (data) {
            content += data;
        });
        request.on("end", function () {
            var body = JSON.parse(content);
            updateFile(response, body, path);
        });
    }
    if (req.body || req.body.hasOwnProperty("status")) {
         updateFile(res, req.body, req.query.path);
    } else {
        readbody(req, res, req.query.path)
    }
});


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