feat: initialize Discord bot project with basic command structure

- Add package.json with dependencies and scripts for building, testing, and running the bot.
- Implement bot startup logic in src/bot.ts, handling interactions and commands.
- Create command structure in src/commands/index.ts, including a ping command in src/commands/ping.ts.
- Add configuration loading from environment variables in src/config.ts.
- Implement command registration in Discord API in src/deploy-commands.ts.
- Bootstrap the bot in src/index.ts.
- Configure TypeScript settings in tsconfig.json.

.env.example

@@ -0,0 +1,4 @@
+DISCORD_TOKEN=
+DISCORD_CLIENT_ID=
+# Optional. If set, command registration targets this guild for instant updates.
+DISCORD_GUILD_ID=

.gitignore

@@ -18,3 +18,7 @@ node_modules/
 # build and test outputs
 dist/
 coverage/
+
+# doc template
+arc42_adoc/
+download_docs_template.py

eslint.config.cjs

@@ -0,0 +1,26 @@
+const tsEslint = require("@typescript-eslint/eslint-plugin");
+const tsParser = require("@typescript-eslint/parser");
+
+/** @type {import("eslint").Linter.FlatConfig[]} */
+module.exports = [
+  {
+    ignores: ["dist/**", "node_modules/**"],
+  },
+  {
+    files: ["**/*.ts"],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        project: "./tsconfig.json",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tsEslint,
+    },
+    rules: {
+      "no-console": "off",
+      "@typescript-eslint/no-explicit-any": "warn",
+    },
+  },
+];

jest.config.cjs

@@ -0,0 +1,8 @@
+/** @type {import('jest').Config} */
+module.exports = {
+  preset: "ts-jest",
+  testEnvironment: "node",
+  testMatch: ["**/*.test.ts"],
+  moduleFileExtensions: ["ts", "js", "json"],
+  clearMocks: true,
+};

package.json

@@ -0,0 +1,35 @@
+{
+  "name": "omo-bot",
+  "version": "1.0.0",
+  "description": "A custom Discord bot and web integration layer designed to bridge the [openmicodyssey.com](https://openmicodyssey.com) experience with our community server. This application gamifies community engagement, automates content syndication, and provides a suite of event management tools centered around the themes of stand-up comedy, indie filmmaking, and a cross-country road trip.",
+  "main": "dist/index.js",
+  "directories": {
+    "doc": "docs"
+  },
+  "scripts": {
+    "build": "tsc -p tsconfig.json",
+    "dev": "ts-node src/index.ts",
+    "start": "node dist/index.js",
+    "lint": "eslint . --ext .ts",
+    "register:commands": "ts-node src/deploy-commands.ts",
+    "test": "jest --passWithNoTests"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "dependencies": {
+    "discord.js": "^14.26.4"
+  },
+  "devDependencies": {
+    "@types/jest": "^30.0.0",
+    "@types/node": "^25.8.0",
+    "@typescript-eslint/eslint-plugin": "^8.59.3",
+    "@typescript-eslint/parser": "^8.59.3",
+    "eslint": "^10.4.0",
+    "jest": "^30.4.2",
+    "ts-jest": "^29.4.9",
+    "ts-node": "^10.9.2",
+    "typescript": "^6.0.3"
+  }
+}

src/bot.ts

@@ -0,0 +1,56 @@
+import {
+  Client,
+  Events,
+  GatewayIntentBits,
+  Interaction,
+  Partials,
+} from "discord.js";
+import { commandMap } from "./commands";
+import { BotConfig } from "./config";
+
+export async function startBot(config: BotConfig): Promise<Client> {
+  const client = new Client({
+    intents: [GatewayIntentBits.Guilds],
+    partials: [Partials.Channel],
+  });
+
+  client.once(Events.ClientReady, (readyClient) => {
+    console.log(`Bot ready as ${readyClient.user.tag}`);
+  });
+
+  client.on(Events.InteractionCreate, async (interaction: Interaction) => {
+    if (!interaction.isChatInputCommand()) {
+      return;
+    }
+
+    const command = commandMap.get(interaction.commandName);
+    if (!command) {
+      await interaction.reply({
+        content: `Unknown command: ${interaction.commandName}`,
+        ephemeral: true,
+      });
+      return;
+    }
+
+    try {
+      await command.execute(interaction);
+    } catch (error: unknown) {
+      console.error(`Command failed: ${interaction.commandName}`, error);
+
+      if (interaction.replied || interaction.deferred) {
+        await interaction.followUp({
+          content: "Command failed. Try again.",
+          ephemeral: true,
+        });
+      } else {
+        await interaction.reply({
+          content: "Command failed. Try again.",
+          ephemeral: true,
+        });
+      }
+    }
+  });
+
+  await client.login(config.discordToken);
+  return client;
+}

src/commands/index.ts

@@ -0,0 +1,13 @@
+import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";
+import { pingCommand } from "./ping";
+
+export interface ChatCommand {
+  data: SlashCommandBuilder;
+  execute(interaction: ChatInputCommandInteraction): Promise<void>;
+}
+
+export const commands: ChatCommand[] = [pingCommand];
+
+export const commandMap = new Map<string, ChatCommand>(
+  commands.map((command) => [command.data.name, command]),
+);

src/commands/ping.ts

@@ -0,0 +1,10 @@
+import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";
+
+export const pingCommand = {
+  data: new SlashCommandBuilder()
+    .setName("ping")
+    .setDescription("Check whether bot is alive."),
+  async execute(interaction: ChatInputCommandInteraction): Promise<void> {
+    await interaction.reply("Pong!");
+  },
+};

src/config.ts

@@ -0,0 +1,24 @@
+export interface BotConfig {
+  discordToken: string;
+  discordClientId: string;
+  discordGuildId?: string;
+}
+
+function readRequiredEnv(name: string): string {
+  const value = process.env[name];
+  if (!value) {
+    throw new Error(`Missing required environment variable: ${name}`);
+  }
+
+  return value;
+}
+
+export function loadConfig(): BotConfig {
+  const discordGuildId = process.env.DISCORD_GUILD_ID;
+
+  return {
+    discordToken: readRequiredEnv("DISCORD_TOKEN"),
+    discordClientId: readRequiredEnv("DISCORD_CLIENT_ID"),
+    ...(discordGuildId ? { discordGuildId } : {}),
+  };
+}

src/deploy-commands.ts

@@ -0,0 +1,31 @@
+import { REST, Routes } from "discord.js";
+import { commands } from "./commands";
+import { loadConfig } from "./config";
+
+async function registerCommands(): Promise<void> {
+  const config = loadConfig();
+  const rest = new REST({ version: "10" }).setToken(config.discordToken);
+  const body = commands.map((command) => command.data.toJSON());
+
+  if (config.discordGuildId) {
+    await rest.put(
+      Routes.applicationGuildCommands(
+        config.discordClientId,
+        config.discordGuildId,
+      ),
+      { body },
+    );
+    console.log(
+      `Registered ${body.length} guild command(s) for guild ${config.discordGuildId}`,
+    );
+    return;
+  }
+
+  await rest.put(Routes.applicationCommands(config.discordClientId), { body });
+  console.log(`Registered ${body.length} global command(s)`);
+}
+
+void registerCommands().catch((error: unknown) => {
+  console.error("Failed to register commands:", error);
+  process.exit(1);
+});

src/index.ts

@@ -0,0 +1,14 @@
+import { startBot } from "./bot";
+import { loadConfig } from "./config";
+
+export async function bootstrap(): Promise<void> {
+  const config = loadConfig();
+  await startBot(config);
+}
+
+if (require.main === module) {
+  void bootstrap().catch((error: unknown) => {
+    console.error("Failed to start bot:", error);
+    process.exit(1);
+  });
+}

tsconfig.json

@@ -0,0 +1,48 @@
+{
+  // Visit https://aka.ms/tsconfig to read more about this file
+  "compilerOptions": {
+    // File Layout
+    "rootDir": "src",
+    "outDir": "dist",
+
+    // Environment Settings
+    // See also https://aka.ms/tsconfig/module
+    "module": "node16",
+    "target": "es2022",
+    "types": ["node", "jest"],
+    // For nodejs:
+    // "lib": ["esnext"],
+    // "types": ["node"],
+    // and npm install -D @types/node
+
+    // Other Outputs
+    "sourceMap": true,
+    "declaration": true,
+    "declarationMap": true,
+
+    // Stricter Typechecking Options
+    "noUncheckedIndexedAccess": true,
+    "exactOptionalPropertyTypes": true,
+
+    // Style Options
+    // "noImplicitReturns": true,
+    // "noImplicitOverride": true,
+    // "noUnusedLocals": true,
+    // "noUnusedParameters": true,
+    // "noFallthroughCasesInSwitch": true,
+    // "noPropertyAccessFromIndexSignature": true,
+
+    // Recommended Options
+    "strict": true,
+    "verbatimModuleSyntax": false,
+    "isolatedModules": true,
+    "noUncheckedSideEffectImports": true,
+    "moduleResolution": "node16",
+    "moduleDetection": "auto",
+    "skipLibCheck": true,
+
+    "esModuleInterop": true
+  },
+  "include": ["src/**/*.ts", "tests/**/*.ts"],
+  "exclude": ["dist", "node_modules"]
+}