utility: add snowflake

src/modules/utility.js

@@ -209,3 +209,30 @@ lookupinvite.callback = async function (msg, line) {
   }
 };
 hf.registerCommand(lookupinvite);
+
+const snowflake = new Command("snowflake");
+snowflake.category = CATEGORY;
+snowflake.helpText = "Converts a snowflake ID into readable time.";
+snowflake.usage = "<--twitter> [snowflake]";
+snowflake.callback = function (msg, line) {
+  let twitter = false;
+  if (line.startsWith("--twitter")) {
+    twitter = true;
+    line.replace("--twitter ", "");
+  }
+  const num = parseInt(line);
+  if (!isNaN(num)) {
+    let binary = num.toString(2);
+    binary = "0".repeat(64 - binary.length) + binary;
+    const timestamp =
+      parseInt(binary.substr(0, 42), 2) +
+      (twitter ? 1288834974657 : 1420070400000);
+
+    return `The timestamp for \`${line}\` is ${
+      new Date(timestamp).toUTCString
+    }`;
+  } else {
+    return "Argument provided is not a number.";
+  }
+};
+hf.registerCommand(snowflake);