mirror of
https://github.com/ctxis/beemka
synced 2026-06-08 13:38:25 +00:00
Pavel Tsakalidis
113 lines
2.9 KiB
PHP
113 lines
2.9 KiB
PHP
<?php
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// Change these settings if you need to.
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$storage = '/tmp/beemka-image';
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$paramName = 'data';
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// Don't change anything below this line.
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$storage = rtrim($storage, "\\/") . DIRECTORY_SEPARATOR;
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class ImageStorage {
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protected $storage = '';
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public function __construct($storage)
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{
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$this->storage = $storage;
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$this->setup();
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}
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protected function setup()
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{
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if (!is_dir($this->storage)) {
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mkdir($this->storage, 0777, true);
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if (!is_dir($this->storage)) {
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throw new Exception('Could not create storage path: ' . $this->storage);
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}
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} elseif (!is_writable($this->storage)) {
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throw new Exception($this->storage . ' is not writable');
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}
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}
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protected function getCurrentFiles()
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{
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$storage = $this->storage;
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$allFiles = array_map(
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function ($file) use ($storage) {
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$file = str_ireplace('.png', '', $file);
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return substr($file, strlen($storage));
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},
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glob($this->storage . "*.png")
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);
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rsort($allFiles);
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return $allFiles;
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}
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protected function getLastImage()
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{
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$allFiles = $this->getCurrentFiles();
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return (count($allFiles) == 0) ? '' : $allFiles[0] . '.png';
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}
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protected function getNextImage()
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{
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$allFiles = $this->getCurrentFiles();
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$fileName = (count($allFiles) == 0) ? 1 : ++$allFiles[0];
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return $fileName . '.png';
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}
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protected function serveImage($filePath)
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{
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header("Content-Type: image/png");
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header('Expires: 0');
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header("Content-Length: " . filesize($filePath));
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readfile($filePath);
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die();
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}
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public function serveLastImage()
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{
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$image = $this->getLastImage();
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$fullPath = $this->storage . $image;
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$this->serveImage($fullPath);
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}
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public function saveImage($data)
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{
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$saveAs = $this->getNextImage();
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$data = trim(str_replace('data:image/png;base64,', '', $data));
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file_put_contents($this->storage . $saveAs, base64_decode($data));
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}
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}
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$imageStorage = new ImageStorage($storage);
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if (isset($_GET['image'])) {
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$imageStorage->serveLastImage();
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die();
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}
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$data = isset($_REQUEST[$paramName]) ? trim($_REQUEST[$paramName]) : '';
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if (!empty($data)) {
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$imageStorage->saveImage($data);
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die();
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}
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?>
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<html>
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<head>
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<title>Beemka Image Viewer</title>
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</head>
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<body>
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<img id="viewer" src="#" width="100%">
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<script type="text/javascript">
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setInterval(
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function() {
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let viewer = document.getElementById('viewer');
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viewer.setAttribute('src', '<?php echo basename(__FILE__); ?>?image&_=' + Date.now());
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},
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1000
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);
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</script>
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</body>
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</html>
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