add roll command

components/Help.js

@@ -3,7 +3,11 @@ const Help = (event) => {
   let cmd = msg.match(/^,help (\w+)?$/);
 
   if (!cmd || !cmd[1]) {
-    event.reply(",help commands - show all avalible commands");
+    event.reply(",help [command] for details, /? optional/");
+    event.reply("avalible commands:");
+    event.reply(" - ,w [set]? [location]? weather");
+    event.reply(" - ,r [min]? [max]? - roll a number");
+    event.reply(",help w");
     return;
   }
 
@@ -14,10 +18,10 @@ const Help = (event) => {
       event.reply(",w - after your save your location you can use ,w");
       break;
 
-    case "commands":
-      event.reply(",help [command] for details");
-      event.reply("avalible commands: w");
-      event.reply(" ,help w");
+    case "r":
+      event.reply(",r - roll from 1 to 100");
+      event.reply(",r [max] - roll from 1 to {max}");
+      event.reply(",r [min] [max] - roll from {min} to {max}");
       break;
 
     default:

components/Roll.js

@@ -0,0 +1,31 @@
+const Roll = (event) => {
+  let msg = event.message;
+  let cmd1 = msg.match(/^,r (-?[0-9]+)$/);
+  let cmd2 = msg.match(/^,r (-?[0-9]+) (-?[0-9]+)$/);
+
+  const random = (min, max) => {
+    return Math.floor(
+      Math.random() * (Number(max) - Number(min) + 1) + Number(min)
+    );
+  };
+
+  if (/^,r$/.test(msg)) {
+    event.reply(`Roll from 1 to 100 => [ ${random(1, 100)} ]`);
+    //
+  } else if (/^,r (-?[0-9]+)$/.test(msg)) {
+    event.reply(
+      `Roll from 1 to ${cmd1[1].trim()} => [ ${random(1, cmd1[1].trim())} ]`
+    );
+    //
+  } else if (/^,r (-?[0-9]+) (-?[0-9]+)$/.test(msg)) {
+    event.reply(
+      `Roll from ${cmd2[1].trim()} to ${cmd2[2].trim()} => [ ${random(
+        cmd2[1].trim(),
+        cmd2[2].trim()
+      )} ]`
+    );
+    //
+  }
+};
+
+export default Roll;

index.js

@@ -2,6 +2,7 @@ import { Client } from "irc-framework";
 import InitDB from "./components/db.js";
 import Weather from "./components/Weather.js";
 import UrlTitle from "./components/UrlTitle.js";
+import Roll from "./components/Roll.js";
 import Help from "./components/Help.js";
 
 InitDB();
@@ -43,6 +44,10 @@ bot.matchMessage(/^,w/, async (event) => {
   return Weather(event);
 });
 
+bot.matchMessage(/^,r/, async (event) => {
+  return Roll(event);
+});
+
 bot.matchMessage(/^,help/, (event) => {
   return Help(event);
 });