const express = require('express');
const app = express();
const port = 80;

const http = require("http");
const fs = require('fs');

const SNAPSHOT_URL = "http://192.168.1.68/cgi-bin/api.cgi?cmd=Snap&channel=0&rs=wuuPhkmUCeI9WG7C&user=admin&password=WX12cv06,"

function snapshotPath(){
    let date = new Date();

    return "/snapshot/snapshot-"
        + date.getFullYear()
		+ "-"
        + String(date.getMonth() + 1).padStart(2, '0')
		+ "-"
        + String(date.getDate()).padStart(2, '0')
        + "_"
        + String(date.getHours()).padStart(2, '0')
		+ "-"
        + String(date.getMinutes()).padStart(2, '0')
		+ "-"
		+ String(date.getSeconds()).padStart(2, '0')
        + "_"
        + date.getMilliseconds()
        +".jpg";
}


function snapshot() {
    http.get(SNAPSHOT_URL, (res) => {
        res.pipe(fs.createWriteStream(snapshotPath()));
    });
}

app.get('/snapshot', (req, res) => {
		try{		
			snapshot();
			res.send('ok');
		} catch(e) 
		{
			res.status(500).send(e);
		}
  });

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

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`);
});