Initial version of bot

app.ts

@@ -1 +0,0 @@
-console.log('hello world');

package.json

@@ -15,11 +15,18 @@
   "type": "module",
   "main": "app.ts",
   "scripts": {
-    "build": "npx tsc app.ts --outDir dist",
+    "build": "tsup src/app.ts --minify --format esm",
+    "dev": "tsx watch src/app.ts",
     "start": "npm run build && node dist/app.js"
   },
   "devDependencies": {
     "@types/node": "^22.14.1",
+    "tsup": "^8.4.0",
+    "tsx": "^4.19.3",
     "typescript": "^5.8.3"
+  },
+  "dependencies": {
+    "discord.js": "^14.18.0",
+    "dotenv": "^16.5.0"
   }
 }

src/app.ts

@@ -0,0 +1,48 @@
+import { Client } from "discord.js";
+import { deployCommands } from "./deploy-commands";
+import { commands } from "./cmds";
+import { config } from "./config";
+import { generateDiscordMessage, safeParseInput } from "./lib/dice";
+
+const client = new Client({
+  intents: ["Guilds", "GuildMessages", "DirectMessages", "MessageContent"],
+});
+
+client.once('ready', () => {
+  console.log('Successfully logged in as ' + client.user?.tag);
+});
+
+client.on('guildCreate', async (guild) => {
+  await deployCommands({ guildId: guild.id });
+});
+
+client.on('messageCreate', async (message) => {
+  if (message.author.bot) return;
+
+  const result = safeParseInput(message.content);
+  if (result !== null) {
+    const response = generateDiscordMessage(result);
+    if (response.length > 2000) {
+      await message.reply("stop that.\n-# (The result is too long to display in a single message. Please try a smaller input.)");
+    } else {
+      await message.reply(response);
+    }
+  }
+});
+
+client.on('interactionCreate', async (interaction) => {
+  if (!interaction.isCommand()) return;
+
+  const { commandName } = interaction;
+  if (commands[commandName as keyof typeof commands]) {
+    commands[commandName as keyof typeof commands].execute(interaction);
+  }
+});
+
+client.login(config.DISCORD_TOKEN).then(async () => {
+  console.log('Logged in successfully!');
+});
+
+client.on('error', (error) => {
+  console.error('Error occurred:', error);
+});

src/cmds/index.ts

@@ -0,0 +1,7 @@
+import * as ping from './ping.js';
+import * as roll from './roll.js';
+
+export const commands = {
+  ping,
+  roll,
+}

src/cmds/ping.ts

@@ -0,0 +1,9 @@
+import { CommandInteraction, SlashCommandBuilder } from "discord.js";
+
+export const data = new SlashCommandBuilder()
+  .setName("ping")
+  .setDescription("Replies with a keep alive check!");
+
+export async function execute(interaction: CommandInteraction) {
+  await interaction.reply("I am still alive!");
+}

src/cmds/roll.ts

@@ -0,0 +1,36 @@
+import { CommandInteraction, SlashCommandBuilder } from "discord.js";
+import { generateDiscordMessage, safeParseInput } from "../lib/dice";
+
+export const data = new SlashCommandBuilder()
+  .setName("roll")
+  .addStringOption(option =>
+    option.setName("input")
+      .setDescription("The expression to roll")
+      .setRequired(true))
+  .setDescription("Rolls dice using hallowed arc syntax");
+
+export async function execute(interaction: CommandInteraction) {
+  if (!interaction.isCommand()) return;
+
+  const { options } = interaction;
+  const input = options.get('input', true)?.value as string;
+
+  let result = safeParseInput(input);
+  if (result === null) {
+    await interaction.reply("Invalid input. Please provide a valid expression.");
+    return;
+  }
+
+  if (!Array.isArray(result)) {
+    result = [result];
+  }
+
+  const response = generateDiscordMessage(result);
+
+  if (response.length > 2000) {
+    await interaction.reply("stop that.\n-# (The result is too long to display in a single message. Please try a smaller input.)");
+    return;
+  }
+
+  await interaction.reply(response);
+}

src/config.ts

@@ -0,0 +1,14 @@
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+const { DISCORD_TOKEN, DISCORD_CLIENT_ID } = process.env;
+
+if (!DISCORD_TOKEN || !DISCORD_CLIENT_ID) {
+  throw new Error('Missing required environment variables: DISCORD_TOKEN or DISCORD_CLIENT_ID');
+}
+
+export const config = {
+  DISCORD_TOKEN,
+  DISCORD_CLIENT_ID,
+};

src/deploy-commands.ts

@@ -0,0 +1,28 @@
+import { REST, Routes } from 'discord.js';
+import { config } from './config';
+import { commands } from './cmds/index.js';
+
+const commandsData = Object.values(commands).map((command) => command.data);
+
+const rest = new REST({ version: '10' }).setToken(config.DISCORD_TOKEN);
+
+type DeployCommandsProps = {
+  guildId: string;
+}
+
+export async function deployCommands({ guildId }: DeployCommandsProps) {
+  try {
+    console.log("Started refreshing application (/) commands.");
+
+    await rest.put(
+      Routes.applicationGuildCommands(config.DISCORD_CLIENT_ID, guildId),
+      {
+        body: commandsData,
+      }
+    );
+
+    console.log("Successfully reloaded application (/) commands.");
+  } catch (error) {
+    console.error(error);
+  }
+}

src/lib/dice.ts

@@ -1,6 +1,6 @@
-type DiceType = 'f' | 'r' | 't';
+export type DiceType = 'f' | 'r' | 't';
 
-interface RollResult {
+export interface RollResult {
   input: string;
   value: number;
   rolls: number[];     // Kept dice
@@ -9,7 +9,7 @@ interface RollResult {
   steps?: string[];    // Arithmetic operations performed
 }
 
-function rollDie(diceType: DiceType): number {
+export function rollDie(diceType: DiceType): number {
   const roll = {
     f: Math.floor(Math.random() * 12) + 1 - 6,
     r: Math.floor(Math.random() * 18) + 1 - 9,
@@ -18,11 +18,11 @@ function rollDie(diceType: DiceType): number {
   return roll[diceType];
 }
 
-function rollDice(count: number, diceType: DiceType): number[] {
+export function rollDice(count: number, diceType: DiceType): number[] {
   return Array.from({ length: count }, () => rollDie(diceType));
 }
 
-function getDieRange(diceType: DiceType): { min: number; max: number } {
+export function getDieRange(diceType: DiceType): { min: number; max: number } {
   const ranges = {
     f: { min: -5, max: 6 },
     r: { min: -8, max: 9 },
@@ -31,7 +31,7 @@ function getDieRange(diceType: DiceType): { min: number; max: number } {
   return ranges[diceType];
 }
 
-function formatSummary(rolls: number[], discarded: number[], diceType: DiceType): string {
+export function formatSummary(rolls: number[], discarded: number[], diceType: DiceType): string {
   const { min, max } = getDieRange(diceType);
   const all = rolls.map(r => ({ value: r, kept: true }))
     .concat(discarded.map(r => ({ value: r, kept: false })));
@@ -42,13 +42,13 @@ function formatSummary(rolls: number[], discarded: number[], diceType: DiceType)
       const isMinOrMax = value === min || value === max;
       let formatted = `${value}`;
       if (isMinOrMax) formatted = `**${formatted}**`;
-      if (!kept) formatted = `~${formatted}~`;
+      if (!kept) formatted = `~~${formatted}~~`;
       return formatted;
     })
     .join(' ');
 }
 
-function parseExpression(input: string): RollResult | RollResult[] {
+export function parseExpression(input: string): RollResult | RollResult[] {
   const batchMatch = input.match(/^(\d+)#(.+)$/);
   if (batchMatch) {
     const [, batchCountStr, innerExpr] = batchMatch;
@@ -59,7 +59,7 @@ function parseExpression(input: string): RollResult | RollResult[] {
   }
 }
 
-function parseSingleExpression(expr: string): RollResult {
+export function parseSingleExpression(expr: string): RollResult {
   const baseMatch = expr.match(/^(\d+)?([frt])(?:(kh|kl)(\d+))?/);
   if (!baseMatch) throw new Error(`Invalid expression: ${expr}`);
 
@@ -101,7 +101,7 @@ function parseSingleExpression(expr: string): RollResult {
   }
 
   return {
-    input: expr,
+    input: expr.replaceAll('*', '\\*'),
     value: result,
     rolls,
     discarded,
@@ -110,7 +110,7 @@ function parseSingleExpression(expr: string): RollResult {
   };
 }
 
-function safeParseInput(message: string): RollResult | RollResult[] | null {
+export function safeParseInput(message: string): RollResult | RollResult[] | null {
   const trimmed = message.trim();
   const isSingleWord = !trimmed.includes(' ');
 
@@ -158,6 +158,18 @@ function safeParseInput(message: string): RollResult | RollResult[] | null {
   return results.length > 0 ? results : null;
 }
 
-console.log(safeParseInput('Hello I roll a 5rkh3+1'));
-console.log(safeParseInput('I ROLL asdf[2#3fkl1*2]asdf'));
-console.log(safeParseInput('[2#3fkl1*2] [2#3fkl1*2]'));
+export function generateDiscordMessage(result: RollResult | RollResult[]): string {
+  if (!Array.isArray(result)) {
+    result = [result];
+  }
+
+  let response = `\` `;
+  for (const resultset of result) {
+    response += resultset.value + ' ` ⟵ ';
+    response += `[${resultset.summary}] ${resultset.input}\n\` `;
+  }
+  response = response.slice(0, response.length - 3);
+
+  return response;
+}
+

tscofnig.json

@@ -0,0 +1,42 @@
+{
+    "compilerOptions": {
+      "allowJs": true,
+      "alwaysStrict": true,
+      "baseUrl": "./",
+      "checkJs": false,
+      "esModuleInterop": true,
+      "forceConsistentCasingInFileNames": true,
+      "lib": [
+        "ESNext"
+      ],
+      "module": "NodeNext",
+      "moduleResolution": "NodeNext",
+      "outDir": "dist",
+      "paths": {
+        "@/*": [
+          "./src/*", "./dist/*"
+        ]
+      },
+      "rootDir": "src",
+      "skipLibCheck": true,
+      "sourceMap": true,
+      "strict": true,
+      "target": "ESNext",
+      "types": [
+        "node"
+      ]
+    },
+    "include": [
+      "src/**/*.ts",
+      "src/**/*.js",
+      "@types"
+    ],
+    "exclude": [
+      "node_modules",
+      "<node_internals>/**"
+    ],
+    "ts-node": {
+      "esm": true,
+      "swc": true
+    }
+  }