Working slider, resets after sliding

2022-12-27 16:39:07 +01:00 · 2022-12-27 16:39:07 +01:00 · 7ae2c22077
commit 7ae2c22077
2 changed files with 64 additions and 0 deletions
--- a/app.js
+++ b/app.js
@ -0,0 +1,42 @@
 const http = require('http'),
      fs = require('fs');
 const { exec } = require('child_process');
 const { parse } = require('querystring');
 function setBrightness(display, value, res) {
  exec(`setbrightness "${value}"`, (error, stdout, stderr) => {
    if (error) {
      console.error(`exec error: ${error}`);
      return;
    }
    console.log(`stdout: ${stdout}`);
    console.log(`stderr: ${stderr}`);
    // Redirect the client back to the main page after the command has run
    res.writeHead(303, { Location: '/' });
    res.end();
  });
 }
 http.createServer((req, res) => {
  if (req.url.startsWith('/button_pressed?')) {
    // Parse the query string from the request URL
    const query = req.url.split('?')[1];
    // Read the brightness value from the query string
    //const brightness = query.brightness;
    // Set the brightness using the value from the slider
    setBrightness(1, query, res);
  } else if (req.url === '/') {
    // Send the form when the root URL is requested
    let item = fs.readFile('./index.html', function(err, html) {
        if (err) {
            throw err; 
        }
        else {
            res.writeHead(200, { 'Content-Type': 'text/html' });
            res.end(html);
          }
    });
  }
 }).listen(5000);
 console.log('Server listening on port 5000');
--- a/index.html
+++ b/index.html
@ -0,0 +1,22 @@
 <head>
    <body>
        <form action="/button_pressed" method="get">
            <label for="brightness">Brightness:</label>
            <input type="range" id="brightness" name="brightness" min="0" max="100" onmouseup="updateBrightness(this.value)" ontouchend="updateBrightness(this.value)">
            <output id="brightness-value"></output>
            </form>
              <script>
                function updateBrightness(value) {
                  document.querySelector('#brightness-value').innerHTML = value;
                  window.location.href = '/button_pressed?' + value;
                }
                function submitForm(event) {
                  // Prevent the default form submission behavior
                  event.preventDefault();
                  // Submit the form manually
                  document.querySelector('form').submit();
                }
              </script>
    </body>
 </head>