Backup my security camera videos using Bun

Author: programandoconro

Languages/Bun/download-files.ts

@@ -0,0 +1,57 @@
+// This script downloads my security camera videos for backup purposes
+
+console.log("init");
+
+const BASE_URL = "http://192.168.11.4:8082";
+
+(async function main() {
+  const dirPaths = await getPaths(BASE_URL);
+  dirPaths.forEach(getFiles);
+})();
+
+async function getPaths(url: string) {
+  const response = await fetch(url);
+  const pageText = await response.text();
+  const textLines = pageText.split("\n");
+
+  const paths = textLines.reduce((acc, line) => {
+    if (line.match("href")) {
+      const path = line.split('"')[1];
+      console.log(path);
+      acc.push(path);
+    }
+
+    return acc;
+  }, [] as string[]);
+
+  return paths;
+}
+
+async function getFiles(dirPath: string) {
+  const dirUrl = `${BASE_URL}/${dirPath}`;
+  const paths = await getPaths(dirUrl);
+  paths.forEach((path) => {
+    const fullUrl = dirUrl + path;
+    fetchFiles(fullUrl, path);
+  });
+}
+
+async function fetchFiles(url: string, name: string) {
+  const response = await fetch(url);
+  const path = `security_cam_videos/${name}`;
+  try {
+    const exists = await Bun.file(path).exists();
+    if (exists) {
+      console.log(`${name} file already exists`);
+      return;
+    }
+    writeFile(path, response);
+    console.log(`Successfully saved ${name}`);
+  } catch (e) {
+    console.error(e);
+  }
+}
+
+async function writeFile(path: string, response: Response) {
+  Bun.write(path, response);
+}