add roll command per request

src/modules/misc/roll.js

@@ -0,0 +1,24 @@
+const Command = require("#lib/command.js");
+
+const roll = new Command("roll");
+roll.category = "misc";
+roll.helpText = "Roll a dice";
+roll.usage = "<sides>";
+roll.addAlias("img");
+roll.callback = function (msg, line) {
+  line = Number(line);
+  if (!line || line == "" || Number.isNaN(line)) line = 6;
+  if (line < 0) line = Math.abs(line);
+
+  if (line == 0) return ":hole:";
+  if (line == 1) return ":one:";
+
+  const res = Math.floor(Math.random() * line);
+
+  if (line == 2) {
+    return `:coin:: ${res == 1 ? "Heads" : "Tails"}`;
+  }
+
+  return `:game_die: (d${line}): ${1 + res}`;
+};
+hf.registerCommand(roll);