Create youtube/util.js

lib/youtube/util.js

@@ -0,0 +1,37 @@
+import crypto from 'crypto';
+
+export function parseFileSize(size) {
+  const sized = parseFloat(size);
+  return (isNaN(sized) ? 0 : sized) * (
+    /GB/i.test(size)
+      ? 1000000
+      : /MB/i.test(size)
+        ? 1000
+        : /KB/i.test(size)
+          ? 1
+          : /bytes?/i.test(size)
+            ? 0.001
+            : /B/i.test(size)
+              ? 0.1
+              : 0
+  );
+}
+
+const SUFFIX = 'f24c8c73d48b7686ed11a3bf97983f6f7eb6395f19268184aae742e93683c00c';
+export function generateHash(url) {
+  const hash = crypto.createHash('sha256');
+  const data = url + Date.now() + SUFFIX;
+  hash.update(data);
+  return hash.digest('hex');
+}
+
+export function time2Number(time) {
+  let [hours, minutes, seconds] = time.split(':').map(Number);
+  if (!seconds) { // '00:07'
+    [minutes, seconds] = [hours, minutes];
+    hours = 0;
+  }
+  return hours * 3600
+    + minutes * 60
+    + seconds * 1;
+}